GMCC KSK75D43UEZA Rotary Compressor: R32 Specifications, Single-Cylinder Structure and Selection Guide

Summary. GMCC KSK75D43UEZA is a hermetic rotary compressor rated at 7.5 cm³/rev displacement, 2,320 W (7,916 Btu/h) cooling capacity and 610 W input on refrigerant R32, which puts its capacity-to-input ratio at 3.80. The manufacturer files it in the R32 DC Inverter Single Cylinder group under an SEER60 test condition, with series SK.

Key facts at a glance

What is the GMCC KSK75D43UEZA?

GMCC KSK75D43UEZA is a single-cylinder DC inverter rotary compressor for air conditioning, running on R32. Qishanr lists the model on its own KSK75D43UEZA product page with the same capacity and input figures the catalogue prints.

GMCC files the model in the R32 section of its compressor catalogue, in the group headed DC Inverter Single Cylinder, where every row is rated under an SEER60 test condition. It sits inside the GMCC Toshiba rotary compressor range, which is part of the wider catalogue of rotary compressors for air conditioning and refrigeration.

Three numbers carry the whole selection decision. Displacement is 7.5 cm³/rev, capacity is 2,320 W, and input is 610 W. Divide the second by the third and you get 3.803, which is the 3.80 printed on the product page. Nothing in this guide is more important than keeping those three figures attached to their test condition, because an SEER60 rating is not interchangeable with a rating taken under any other condition.

R32 is the other half of the story. It is a single-substance HFC with a global warming potential of 675 and a safety group of A2L, and that placement decides whether a finished unit can be sold into a given market after a given date. The refrigerant section below sets out where that boundary currently falls and what it means for a compressor already built around R32.

Technical specifications

Two things about this table are worth stating plainly. First, the catalogue row and the product page agree on capacity, input and displacement, which is the level of agreement worth having before a figure is quoted into a bill of materials. Second, the capacity figure is published under an SEER60 condition, so it belongs to a seasonal efficiency framework rather than to a single fixed operating point. A buyer who needs a capacity at one evaporating and condensing temperature has to ask for the performance curve, not read 2,320 W as a nameplate that holds everywhere.

The 7,916 Btu/h figure is not an independent measurement. Multiply 2,320 W by the standard conversion factor of 3.412 and the result is 7,915.8, which rounds to 7,916. The two capacity columns are one measurement expressed twice, and they can be used as a check on any transcription of this row.

What the model code KSK75D43UEZA tells you

GMCC prints naming rules in the front matter of its rotary compressor catalogues, and two separate rule sets appear across the editions reviewed here. The entries below are the ones the catalogue text actually defines, matched against this model string and against the neighbouring rows in the same table, where the decode can be tested rather than assumed.

Read that table as two tiers. The first five rows are proved, because the catalogue legend and the catalogue's own group headings agree with each other and with the printed displacement. The last two rows are honest blanks. Anyone who tells you that the 43 in this part number means a specific accumulator diameter or a specific voltage code is reading a legend that is not printed in the documents reviewed here.

One consequence is worth carrying forward. Position 2 is the reason this guide can state the cylinder count with confidence. The model string says single cylinder, the group heading says single cylinder, and the product page's own first specification bullet says single cylinder. Only one line on the product page disagrees, and the next section deals with it directly.

Single cylinder or twin cylinder? A contradiction on the product page, and how it resolves

The product page for this model contradicts itself, and the contradiction is the most useful thing on it.

The fifth specification bullet reads, in full, `Voltage: DC Inverter Single Cylinder`. Further down the same page, the Product Details table carries a row that reads `Voltage DC Inverter Twin Cylinder`. Both lines sit on the same page, describing the same part number, and they cannot both be right.

The manufacturer resolves it. GMCC's R32 catalogue prints this model inside the group headed 单缸变频 DC Inverter Single Cylinder, which is the single-cylinder inverter group. The neighbouring twin-cylinder group in the same table is headed 双缸变频 DC Inverter Twin Cylinder, and every row in it begins with the letters KT rather than KS. Two independent confirmations follow from that. The first is the group heading itself. The second is the model string: position 2 of KSK75D43UEZA is S, and the catalogue's structure legend defines S as single cylinder and T as twin cylinder.

One further piece of evidence comes from outside the site. The same record is published on a second domain under the title `China Gmcc DC Inverter Single Cylinder Rotary Air Conditioning Compressor Ksk75D43ueza`. That is the seller's own product description, written independently of the table, and it agrees with the bullet rather than with the table.

So the bullet is right, the Product Details row is wrong, and the correct figure for a bill of materials is a single-cylinder compressor. The error is a template defect rather than a data-entry slip by one person: the same page pattern appears on the sibling model KSK89D59UEZC, which also prints Single Cylinder in its bullet and Twin Cylinder in its table, and it also appears on a third-party mirror of the same record. The same page template gets the field right for the genuine twin-cylinder models, such as KTN110D42UFZ, where both the bullet and the table read Twin Cylinder. The error is confined to the KS family pages.

There is a second defect in the same field, and it matters for reading the site at all. The row is labelled `Voltage`, but on these pages it does not carry a voltage. It carries a structure descriptor. On other product pages in the same catalogue the identical row carries an actual supply such as `220-240V, 50HZ, 1PH`. The field is being used for two different things depending on which page you land on, so it should be read as a free-text annotation rather than as a specification. When a supply voltage is needed for this model, ask for it rather than reading it off that row.

Performance characteristics

Three characteristics define how this compressor behaves in a system, and each one has a different evidence standard behind it.

Capacity is continuously variable. The model string places it in the DC inverter family, and the catalogue sells it in the inverter section rather than in a fixed-speed group. What that means in practice is that the 2,320 W at the SEER60 condition is a reference point on a modulation envelope, not a fixed duty. A system designer who needs to know how the compressor behaves at part load, at high ambient or at low ambient needs the performance map, because a single rated point does not describe an inverter compressor's range.

The capacity-to-input ratio is 3.80, and it is a derived figure. Divide 2,320 W by 610 W and the answer is 3.803. No published efficiency figure is needed to arrive at it, and no efficiency figure should be quoted without the condition attached to it. Efficiency comparisons between compressors are only meaningful when the capacity, the input and the test condition are all held to the same basis. Both the capacity and the input here carry an SEER60 basis, which is the same basis used for every row in the group.

The refrigerant determines the efficiency trend as well as the compliance position. R32 is a single-substance HFC, not a blend. That matters because a blend with glide behaves differently in a system than a single substance does, and because a single substance has one global warming potential rather than a calculated mixture value. R32's value is 675, which places it below the 750 threshold that applies to some equipment classes and above the 150 threshold that applies to others. The section on the R32 position below sets out which is which.

GMCC also publishes a group-level performance claim for its current air-conditioning inverter line, in the product manual. The manufacturer states that compressor coefficient of performance is improved by 8 percent, that system annual performance factor is improved by 6 percent, that compressor noise is reduced by 3 dB with 6-octave noise down by 4 to 5 dB, and that airflow pulsation is reduced by 50 percent. Those are the manufacturer's own claims for the line as a whole. They are not measurements of KSK75D43UEZA, and this guide does not present them as such.

R32 versus R410A at the same displacement

The most useful comparison for a buyer who is already running R410A equipment is a like-for-like displacement comparison, because it isolates what the refrigerant change buys at a fixed swept volume. The catalogue prints both rows under the same SEER60 condition.

Source: GMCC rotary compressor catalogue, R32 and R410A inverter sections, both rated under SEER60.

Read this table as two different compressors in the same displacement slot, not as one compressor tested on two refrigerants. That distinction is the whole point. R32 delivers 95 W more capacity from the same swept volume, which is 4.3 percent more, and it takes 28 W more input to do it. The net effect on the ratio column is a fraction of a point. The engineering consequence is that R32 buys capacity rather than efficiency at a fixed displacement, and the buyer who wants the same capacity from a smaller frame can have it.

A drop-in swap is not on the table. R32 and R410A differ in operating pressure, in the oil the system requires and in the safety classification of the finished product. R410A is a blend of R-32 and R-125 at 50.0 and 50.0 percent by mass, so a system built for it has been designed around a mixture with different transport properties. A compressor and its surrounding system have to be re-specified and re-tested together. The displacement matching tells you the frame size, and nothing more than that.

Buyers who want the R410A route at a slightly larger displacement can compare against the R410A ASK89D53UEZ, which the same site publishes at 8.9 cm³/rev. Its page carries the same single-cylinder designation in both the bullet and the table, which is a further sign that the twin-cylinder line on the KSK pages is the outlier rather than the pattern.

Where it sits in GMCC's R32 single-cylinder range

The catalogue prints a full sweep of R32 single-cylinder inverter models under the same SEER60 condition, which means the rows can be compared directly. The table below reproduces the 7.5 to 10.8 cm³/rev part of that sweep, with this model in bold. Every row was checked against the conversion factor: multiplying the capacity in watts by 3.412 reproduces the capacity in Btu/h printed beside it, which confirms that the four numeric columns belong to the model named on the same row.

Source: GMCC rotary compressor catalogue, R32 section, DC Inverter Single Cylinder group, test condition SEER60. Links point to the model pages published on this site; the remaining rows are catalogue entries that are not listed as separate pages here.

Two patterns in this table are worth reading carefully, because they change how a selection should be made.

The first is that displacement does not determine capacity. The SK series at 8.9 cm³/rev offers 2,780 W in one row and 2,795 W in the next, which is a small difference, but the SN series at 9.7 cm³/rev offers three different capacities, 3,100 W, 3,100 W and 3,050 W, from the same swept volume. The last two digits of the model string are doing work here. They are not decoration, they are part of the variant identity, and they are not decoded by the legend reviewed here.

The second is that a higher displacement does not automatically mean a higher ratio of capacity to input. Reading down the input column and dividing into the capacity column gives values that move in both directions across the sweep. A buyer who is optimising for efficiency and a buyer who is optimising for capacity at a fixed frame size will not always land on the same row. The KSM89V1VDZ is worth adding to that comparison, because it sits at the same 8.9 cm³/rev displacement as the KSK89 rows but is rated under a different test condition and against a different supply, so it does not belong in the table above and should not be read as a substitute for it.

The R32 position under the current F-gas rules

R32's global warming potential of 675 and its safety group of A2L are published by the European Commission's assessment of climate-friendly alternatives to F-gases, which draws the values from the annexes of Regulation (EU) 2024/573. The same page lists the prohibition dates that apply to stationary air conditioning, heat pump and chiller equipment. The table below reproduces the entries that touch equipment in this compressor's size class.

Read the two threshold columns together rather than the dates alone, because the thresholds are what R32 does or does not clear.

At 675, R32 sits below the 750 threshold that applied to single split systems with a charge under 3 kg from January 2025. That is why R32 became the mainstream near-term replacement for R410A, whose blend global warming potential is far higher. The German Environment Agency publishes a global warming potential table keyed to the regulation, which is the reference to use when a mixture value is needed rather than a single-substance value.

At 675, R32 sits above the 150 threshold that arrives for self-contained equipment and for split air-to-water systems in 2027, for split air-to-air equipment up to 12 kW in 2029, and for larger split systems in 2033. And it is caught by the 2035 prohibition on any fluorinated greenhouse gas in split systems up to 12 kW. R32 is therefore a genuine answer for the current compliance cycle and not a permanent one. A product family with a development cycle measured in years should price that second transition into the plan now rather than discover it at the 2029 review.

One boundary should be stated explicitly. This guide is describing where R32 stands as a substance. It is not stating that any particular appliance complies with anything, and no certificate held by this compressor is claimed here.

Which standards apply to a compressor like this

Compressor-level safety, system-level safety and performance rating are three separate questions in the standards framework, and they are answered by three different documents. The table sets out which document answers which question.

The important consequence of that table is that naming a standard is not a certification claim. A2L is a classification that places a design obligation on the appliance: charge limits, ventilation and leak detection become part of the product definition, and the finished unit is assessed against the product-level standard rather than only against the compressor standard. Anyone building around R32 has to design for A2L, and the edition in force in the destination market is the one that applies.

The catalogue also lists certification coverage by refrigerant class and capacity range, independent of any individual model. For R32, it prints coverage of 4,400 to 30,500 Btu/h on 50 Hz 220/240 V equipment, and a separate DC inverter entry covering 7,000 to 47,000 Btu/h. At 7,916 Btu/h, this model sits inside both stated ranges. Treat those as the manufacturer's statement of its certification coverage rather than as a certificate for this part number.

The part number is a legacy string: what to ask for today

This is the finding that most affects a purchasing decision, so it is worth stating precisely.

The model string KSK75D43UEZA does not appear in the current GMCC rotary compressor product manual. Searching the full extracted text of that document returns zero occurrences. The same search returns zero occurrences across two independent distributor-hosted copies of the same manual and across a third hosted copy of the 2024 catalogue, all of which were checked in full.

What the current manual carries instead is a newer suffix generation in the same group. Under the R32 and R410A heading, in the group headed DC Inverter Single Cylinder with an SEER60 test condition, the manual lists KSK53D15UEZ3, KSK66D15UDZ3, KSK66D22UEZ31, KSK75D12UEZ31, KSK75D35UEZA3, KSK82D22UEZA31, KSK89D32UEZA31, KSK89D35UEZ3, KSK103D32UEZ31, KSK103D26UEZD3, KSK103D33UEZ3, and a longer SN series list running from KSN98D21UEZB31 to KSN140D43UFZ31. Two of those occupy the 7.5 cm³/rev slot that this model occupies: KSK75D12UEZ31 and KSK75D35UEZA3.

An earlier GMCC catalogue hosted by two separate European distributors does carry the R410A model ASK75D43UEZ in the 7.5 cm³/rev slot, which shows the D43 pattern was in use in the R410A generation before it was carried across to R32.

What this means in practice is straightforward. A buyer specifying a new build should not expect a current catalogue row for KSK75D43UEZA and should ask GMCC or an authorised distributor which current 7.5 cm³/rev part supersedes it, whether the replacement is mechanically interchangeable, and what the equivalent performance table looks like. A buyer replacing a failed unit in an existing system has a different question to answer: whether the original is still obtainable as service stock, and if not, what the approved substitution is and what it changes in the system.

This site already carries guides for two current-generation models in the same single-cylinder family, at neighbouring displacement slots. The KSK89D32UEZA31 guide covers the 8.9 cm³/rev slot and the KSK82D22UEZA31 guide covers the 8.2 cm³/rev slot. Reading them alongside this guide shows both how the family has continued and how far the newer suffix format has moved from the version described here.

Which applications suit the KSK75D43UEZA?

The list below starts from the four applications the product page publishes, then adds the situations that the refrigerant position and the capacity class create.

• Residential and light commercial air conditioning. Air conditioning is the first application the product page lists, and 7.5 cm³/rev with 2,320 W places the model in single split and small multi-split duty rather than in a portable or window unit. This is also the application class the catalogue files it under, since the model sits in the catalogue's air-conditioning inverter section rather than in a refrigeration group.
• Driers. The product page lists drier duty, which is a long-run, low-ambient application. The refrigerant rules that apply to a drier are the same rules that apply to the air conditioning equipment it is sold alongside, so the R32 position described above carries over.
• Refrigeration and chillers. Refrigeration and chiller duty both appear on the product page. For chiller equipment specifically, the F-gas timetable sets a GWP 150 threshold for units up to 12 kW from January 2027 and above 12 kW from the same date, and a complete prohibition on any fluorinated greenhouse gas in units up to 12 kW from January 2032. R32 clears none of those three, so a chiller built on R32 is a near-term product rather than a long-life platform.
• Capacity substitution at a fixed frame size. Because R32 delivers more capacity per unit of swept volume than R410A, this displacement slot can replace a larger R410A frame within a given capacity target. The capacity table earlier in this guide shows the size of that effect at this exact displacement.
• Service and replacement work on installed R32 equipment. For a technician or a maintenance buyer, the relevant question is not which model is newest but which part number matches the unit in front of them. The section above on the legacy part number is the part of this guide to read first in that situation.
• Heat pump duty, subject to confirmation. R32 is used in heat pump equipment, and GMCC's own product centre lists a separate pool heat pump compressor category. Heat pump duty is not among the four applications this model's product page prints, and one reseller listing does describe this exact part number with a swimming pool heat pump application. That claim appears in no other source reviewed and is flagged in the verification notes below. Confirm the duty envelope against a manufacturer datasheet before specifying it for heating service.

One application is worth excluding explicitly. This is a single-cylinder compressor, and the twin-cylinder rows in the same catalogue are separate part numbers in the KT family. A specification that calls for twin-cylinder redundancy, lower torque ripple or a wider modulation range is not answered by this model, and the table earlier in this guide names the alternative rows.

Selection checklist

1. Confirm the refrigerant position for the destination market. R32 is an A2L refrigerant at a global warming potential of 675. Check the equipment class, the charge and the rated capacity against the prohibition schedule that applies where the product will be sold, rather than assuming that a lower global warming potential than R410A is sufficient.
2. Price the second transition into the design. R32 sits above the 150 threshold that applies to several equipment classes from 2027, 2029 and 2033, and above the blanket prohibition on any fluorinated gas in small split systems from 2035. If the platform life extends past those dates, plan the next step now.
3. Build for A2L, not for A1. Charge limits, ventilation, leak detection and the siting of electrical components are part of the product definition, and the finished unit is assessed against the product-level safety standard. The compressor-level standard alone is not sufficient.
4. Size on capacity at the design point. The published 2,320 W is an SEER60 figure. Request the performance map if the design point is away from the standard condition, and do not compare this figure with a capacity quoted under a different basis.
5. Verify the mechanical interface and the electrical rating before committing the design. The catalogue row reviewed here does not print accumulator diameter, connection sizes or supply voltage in a form that can be quoted for this model, and the product page's supply row carries a structure descriptor rather than a voltage. Ask the supplier for both.
6. Confirm the drive and control requirement. The model string and the catalogue group place this unit in the DC inverter family, so it needs an inverter drive and matching control logic rather than a fixed-speed contactor arrangement.
7. Confirm the structure against the system requirement. This is a single-cylinder compressor. If the application needs twin-cylinder behaviour, the KT rows in the same catalogue are the alternative, and the earlier table names them.
8. Check the current part number. KSK75D43UEZA is not listed in the current GMCC product manual. Ask which current 7.5 cm³/rev part supersedes it and whether the substitution is mechanically and electrically interchangeable.
9. Request the datasheet and the certificate set for the exact part number you will buy, and confirm warranty, documentation and test report status in writing.

Frequently asked questions

What refrigerant does the GMCC KSK75D43UEZA use?

It uses R32, also known as difluoromethane, with the chemical formula CH2F2. It is a single-substance HFC rather than a blend, with a 100 year global warming potential of 675 and a safety group of A2L. Both values come from the annexes of Regulation (EU) 2024/573 as published by the European Commission. Because R32 is a single substance, its global warming potential is a fixed value rather than a figure calculated from component fractions.

Is the KSK75D43UEZA a single-cylinder or a twin-cylinder compressor?

It is a single-cylinder compressor. Three sources agree. The manufacturer's catalogue prints the model inside a group headed DC Inverter Single Cylinder. Position 2 of the model string is S, and the catalogue's own legend defines S as single cylinder and T as twin cylinder. And the product page's first specification bullet reads Single Cylinder. One line on that page disagrees, reading Twin Cylinder in the Product Details table, and the evidence points to that line being a template error carried over from the twin-cylinder pages.

What are the displacement, capacity and input of the KSK75D43UEZA?

Displacement is 7.5 cm³/rev. Capacity is 2,320 W, which is 7,916 Btu/h at the standard conversion factor. Input power is 610 W. Dividing capacity by input gives 3.803, which is the 3.80 the product page prints. All of these figures carry an SEER60 test condition, so they belong to a seasonal efficiency basis and should not be compared with ratings taken under another condition.

Is the KSK75D43UEZA still listed in the current GMCC catalogue?

It is not in the current product manual. The exact string KSK75D43UEZA returns no occurrence in the 2024 GMCC rotary compressor product manual or in two independent distributor-hosted copies of it. The current manual lists a newer suffix generation in the same group, and two of those entries, KSK75D12UEZ31 and KSK75D35UEZA3, occupy the same 7.5 cm³/rev slot. If you need a current part number, ask the manufacturer or an authorised distributor what supersedes this one. This site's GMCC model guides on this site hub collects the guides for the models covered here, including the EKPM310D85UMTR selection guide for the R32 route at a larger displacement.

Where can I obtain the official GMCC catalogue and product manual?

Start at the manufacturer's own official product centre, which lists the current product categories, and at the official downloads page, where the rotary compressor product manual is distributed behind a form. Because that manual is not published as a direct link, the editions used for this guide were read from copies hosted elsewhere: the GMCC Rotary Compressor Product Catalog 2024 hosted by a distributor, and the FAWAZ-GMCC Rotary Compressor 2018 catalogue hosted on a document platform. Both are third-party hosts and both are named as such rather than presented as manufacturer URLs. This site's own downloads page carries no GMCC document, so it is not a route to either file.

Can the KSK75D43UEZA replace an R410A compressor of similar displacement?

Not as a drop-in, even though the displacement matches. At 7.5 cm³/rev, the R32 row in the manufacturer's catalogue delivers 2,320 W against 2,225 W for the R410A row, so the swept volume matches while the capacity does not. More importantly, R410A is a blend of R-32 and R-125 at 50.0 and 50.0 percent by mass, and R32 is a single substance at a different operating pressure and with a different safety classification. Compressor, oil, expansion device, pipe sizing, charge and the safety assessment of the finished unit all have to be re-specified together.

How does R32 compare with R290 for a new design?

The comparison is less about efficiency than about the regulatory boundary. R32 is a fluorinated gas at a global warming potential of 675, so it still answers to the F-gas prohibition schedule described above. R290, propane, is not fluorinated at all, which removes it from that schedule entirely, and it is correspondingly classified A3 rather than A2L, which places heavier design obligations on charge limits and ignition source control. This site's guide to the R290 DSG320S1UFT sets out the same trade-off from the non-fluorinated side.

Is R32 a long-term choice or a transitional one?

It is a strong near-term choice and not a permanent one. R32 clears the 750 threshold that applied to small single split systems from January 2025, but it sits above the 150 threshold that arrives for self-contained air conditioning and heat pumps, for split air-to-water systems and for small chillers in January 2027, for split air-to-air systems in January 2029, and for larger split systems in January 2033. From January 2035, split systems up to 12 kW may not contain any fluorinated greenhouse gas at all. Because stationary cooling demand continues to rise, those dates are a direction of travel rather than an isolated set of rules, and the IEA's analysis of cooling demand is the reference to read for the scale behind them.

Data sources and verification notes

This guide labels the strength of every source it uses.

1. GMCC Rotary Compressor Catalogue, 2018 edition, published by GMCC and distributed by FAWAZ Group. Used for this model's specification row (7.5 cm³/rev, 2,320 W, 7,916 Btu/h, 610 W, 3.90 W/W under the SEER60 condition), the group heading DC Inverter Single Cylinder, the R410A comparison row for ASK75D43UEZ at the same displacement, the twelve-model R32 sweep table, and both model naming legends. Read from a hosted reader edition of the FAWAZ-GMCC Rotary Compressor 2018 catalogue. Primary source, and the only document reviewed that carries this exact model string.
2. GMCC Rotary Compressor Product Manual, 2024 edition. Used for the absence test on this model string, for the list of current-generation models in the same group, and for the four group-level performance claims quoted in this guide. The manufacturer distributes this manual through a form on its official downloads page rather than as a direct link, so the editions read here were distributor-hosted copies, including the GMCC Rotary Compressor Product Catalog 2024. Third-party host, named as such.
3. Two further distributor-hosted copies of the 2024 manual. Used only to check that the absence of this model string from the 2024 edition is not an artefact of one hosted file. All four documents reviewed return zero occurrences for the substrings KSK75D43UEZA, 75D43 and D43UEZ, while two of them do carry the R410A ASK75D43UEZ at the same displacement, which is what dates this string to the earlier generation.
4. Qishanr KSK75D43UEZA product page. Used for the site-stated COP of 3.80 W/W, the specification bullet that reads Single Cylinder, the Product Details row that reads Twin Cylinder, the Voltage row, and the applications the page lists. Company published material.
5. Qishanr sibling product pages for KSK89D59UEZC, KTN110D42UFZ, KTN150D42UFZ, KSN98D22UFZ, KSN108D22UFZ, KSM89V1VDZ, KSG250V1VMT, KSM125V1VFT and ASK89D53UEZ. Used to establish that the bullet-versus-table contradiction is confined to the KS family, that the genuine twin-cylinder pages agree with themselves, and that the Voltage row carries a genuine supply on some pages and a structure descriptor on others. Company published material. Two models that appear in the 2018 catalogue, KSK66D43UEZA and KSK89D53UEZ, have no page on this site and return a not-found response, which is a gap rather than a contradiction.
6. Independent mirror of the same product page on a second distributor domain. Used to confirm that the contradictory row is reproduced byte for byte, which is what makes it a template artefact rather than a transcription slip on one server.
7. Made-in-China listing for this model. Used for the supplier's own listing title, which reads Single Cylinder. Weak source, used only as a fourth independent statement of the cylinder count.
8. European Commission, climate-friendly alternatives to F-gases, air conditioning. Used for the F-gas prohibition timetable and for the R32 global warming potential of 675 and its safety group of A2L. The values are taken from Annex I and II of Regulation (EU) 2024/573 on fluorinated greenhouse gases. The German Environment Agency global warming potential table was used as a second reading of the same numbers.
9. Applicable standards. ANSI/ASHRAE Standard 34 supplies the refrigerant designations and safety groups, and records R410A as a blend of R-32 and R-125 at 50.0 and 50.0 percent by mass. IEC 60335-2-34:2024 covers the safety of sealed motor compressors. IEC 60335-2-40:2022 covers electrical heat pumps, air conditioners and dehumidifiers, and its scope states that it does not take into account refrigerants other than groups A1, A2L, A2 and A3. ISO 5149-1:2014 covers refrigerating system safety and environmental requirements. ISO 817:2024 is the refrigerant classification standard those safety groups come from. ISO 5151:2017 covers the performance testing and rating of non-ducted air conditioners. AHRI 540 covers performance rating of positive displacement refrigerant compressors. None of these is a certification held by this model, and no certificate is claimed here.
10. Market source. The IEA analysis of the future of cooling, used for context on the direction of stationary cooling demand rather than for any figure quoted in this guide.
11. Site pages used for availability conclusions. The site sitemap, the downloads page, the contact page and the GMCC article hub. The downloads page carries three compressor documents, none of them a GMCC document, so it is not a route to the manufacturer catalogue. The manufacturer's own official product centre is the correct starting point for the current range.

Explicitly not verified. The manufacturer prints a catalogue COP of 3.90 W/W for this model and the product page prints 3.80 W/W. The page figure is exactly 2,320 divided by 610, so it is a recomputed ratio rather than a second measurement, and both figures are given in this guide with their source rather than reconciled. Positions 7 and 8 (`43`) and position 9 onwards (`UEZA`) of the model string are not decoded, because neither published naming legend covers them, and no meaning should be inferred for them. The accumulator diameter, the connection sizes and the supply voltage are not printed for this model in any document reviewed. A reseller page states a heating capacity of 2,918 W, a COP of 4.8 W/W and a swimming pool heat pump application for this part number; none of those three figures appears in any other source reviewed, so none of them is published in this guide and the heat pump application is marked as subject to confirmation. The four performance claims quoted for the compressor group are claims for the whole group in the 2024 manual, not measurements of this model. No certificate held by this model has been sighted, and catalogue ratings are manufacturer data rather than third party test results.

How to close the gaps. Request from GMCC or an authorised distributor a datasheet and a performance table for the exact string KSK75D43UEZA, stating refrigerant, cylinder count, displacement, rated condition, cooling capacity, input power, COP, connection sizes, accumulator diameter, mass and electrical rating, together with the certificate set the destination market requires and a written statement of which current part number supersedes it. Add the figures to this file when they arrive and mark them verified.

Placeholders to fill before publishing. Author name, job title, publish date, author page URL, hero image URL, the company entity details in the structured data block, and the canonical article URL. This model has no article shell on the site, so the canonical URL is a publish-time placeholder rather than an existing address, and all four occurrences in the structured data block must be set together once the slug is chosen. Do not guess a slug.

Closing call to action. The published body carries a Contact Us button at the very bottom, after these verification notes, pointing to the GMCC DC Inverter KSK75D43UEZA product page. It is a same-domain internal link, so it carries no `target` and no `rel`. The wrapper is a block element carrying `text-align:center` and the anchor is `display:inline-block`; both layers are needed, because centring the wrapper alone leaves the anchor free to sit wherever the surrounding text flow puts it, so the markup below keeps both layers. The button is the last visible element on the page, with nothing after it. If this article is ever hosted on a domain other than `qishanrcompressor.com`, add `target="_blank" rel="noopener"` to that anchor. The block below is the exact markup used in `article-body.html`.