GMCC DSG320S1UFT Rotary Compressor: R290 Specifications, F-Gas Position and Selection Guide

Key facts at a glance

What is the GMCC DSG320S1UFT?

GMCC DSG320S1UFT is a rotary compressor in GMCC's SG series that runs on R290, also known as propane. The GMCC rotary compressor catalogue files it in the R290 part of its green refrigerant chapter, on a 1 phase 230 V 50 Hz supply, with the rated figures published under an ASH test condition. Qishanr lists the model on its own DSG320S1UFT product page as a GMCC Toshiba inverter compressor for air conditioning, driers, refrigeration and chillers. It sits inside the GMCC Toshiba rotary compressor range, which is part of the wider catalogue of rotary compressors for air conditioning and refrigeration. GMCC publishes the current range in its official product centre.

R290 is the reason this model is worth reading about rather than filing next to any other mid-size rotary compressor. Propane carries a 100 year global warming potential of 0.02 and a safety group of A3, and it is not a fluorinated gas. That single fact changes which regulations apply to a finished product, which is covered in the next section.

Technical specifications

Two things about this table are worth stating plainly. First, the manufacturer row and the seller page agree on capacity, input, capacitor and the rounded displacement, which is the level of agreement you want before quoting a figure. Second, the catalogue prints its ratings under an ASH test condition, so 4,755 W is a figure with a condition attached and is not comparable with a capacity quoted under any other condition.

R290 versus R32: what the refrigerant choice actually changes

Buyers comparing this compressor with an R32 or R410A model usually compare capacity first. The refrigerant is the decision with the longer consequences, so compare the substances before the numbers.

Sources: the R290 and R32 global warming potentials, both taken from Annex I and II of Regulation (EU) 2024/573, and their safety groups, come from the European Commission's assessment of climate-friendly alternatives to F-gases. The chemical names and formulae come from the designations published alongside ANSI/ASHRAE Standard 34, which also lists R410A as a blend of R-32 and R-125 at 50.0 and 50.0 percent by mass. The Commission page used here does not state a global warming potential for R410A, so no figure for it appears in this guide. Ask the supplier for the value you need rather than accepting one from a summary.

R290 at 0.02 is two orders of magnitude below R32 at 675. That is not a marginal improvement in an environmental metric. It moves the substance across a regulatory boundary, and the next section sets out where that boundary falls.

The F-gas timetable a compressor decision now has to answer

The same European Commission pages list 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 last column carefully, because it is the whole argument. Every one of those limits is written against fluorinated greenhouse gases. R290 is propane, a hydrocarbon, and is not fluorinated, so it is not a substance these prohibitions reach. R32 is an HFC at GWP 675. It sits below the 750 line drawn in 2025, which is why it works as a near-term answer, but it is above the 150 line that arrives 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 gas in split systems up to 12 kW.

A compressor built on R290 is not standing on that timetable at all. That is a different kind of answer from a lower-GWP HFC, and for a product family with a development cycle longer than a couple of years it is the more durable one.

What safety group A3 asks of the system designer

The regulatory advantage comes with a design obligation, and it should be priced in before the compressor is chosen rather than after.

A3 is the higher flammability classification in the ASHRAE scheme. R290 sits in it. The consequence is that charge limits, ventilation, leak detection and the location of electrical components all become part of the design, and the finished appliance must be assessed against the product safety standard that covers flammable refrigerants rather than only against the compressor safety standard.

For electrical heat pumps, air conditioners and dehumidifiers, that standard is IEC 60335-2-40:2022, whose scope states that it does not take into account refrigerants other than group A1, A2L, A2 and A3 as defined by ISO 817. A3 is inside that scope, so an R290 appliance is a covered product and the edition in force in the destination market has to be applied. The seventh edition cancels and replaces the sixth edition published in 2018.

Do not read this guide as a statement that any particular appliance passes that standard. It is a statement about which standard governs, and the appliance has to be designed and tested against it.

Where it sits in GMCC's R290 range

The 2024 catalogue prints two SG series models in the same group under the same ASH condition, so they compare directly.

Source: GMCC rotary compressor catalogue, R290 section, 1 phase 230 V group, test condition ASH.

The two models share a height and both connection sizes, so the mechanical envelope is the same. The step up in displacement buys 115 W of capacity for 45 W of extra input, which is why the larger model shows a slightly lower COP. Choose between them on the duty point, not on the efficiency column alone.

Smaller R290 models are also stocked on this site for lighter duty. The DSM155V12UDZ is a 15.5 cm³/rev unit, and the DSM180V11UDZ covers 18.1 cm³/rev. Buyers who are weighing refrigerant rather than frame size can compare against the R410A side of the catalogue, using the R410A ASK46V13VZDX at 8.9 cm³/rev as the small end of that family, or read the EKPM310D85UMTR selection guide for the R32 route at a larger displacement. The full set of GMCC model guides on this site covers the older model strings.

What the model code DSG320S1UFT tells you

GMCC publishes naming rules in its rotary compressor catalogue. The verified entries available from the catalogue editions reviewed here are:

Those six entries are the confirmed map. They do not decode the DSG320S1UFT string position by position. In particular, the catalogue editions reviewed for this guide do not supply the meaning of every letter in this string, and the DSG prefix is not covered by the legend above. What can be stated from the catalogue is what its own columns print: the series is SG, the refrigerant is R290, and the displacement, capacity, input, capacitor, height and both connection sizes are the values in the specification table.

Do not decode refrigerant, cylinder count or electrical rating from the letters alone. Ask for the GMCC datasheet for the exact string DSG320S1UFT before committing a design.

Which applications suit the DSG320S1UFT?

The applications below start from the four that the product page itself lists, then add the two situations the refrigerant position creates.

• Residential and light commercial air conditioning. The product page lists air conditioning as a primary application, and 4,755 W of cooling at a 31.8 cm³/rev displacement places the model in single split and small multi split duty rather than in a small portable unit.
• Moveable and self-contained room air conditioning. The European Commission lists R290 as the climate-friendly alternative substance for moveable room air conditioning and for self-contained equipment, which is the equipment class where a non-fluorinated refrigerant removes the prohibition dates from 2027 onwards.
• Driers. The product page lists drier duty, which is a low-ambient, long-run application where the refrigerant choice is bounded by the same F-gas rules as air conditioning.
• Refrigeration and chillers. The product page lists refrigeration and chiller duty, and the Commission page lists R290 among the alternatives for stationary chillers, where a GWP of 150 or more is prohibited for units up to 12 kW from January 2027.
• Product families facing a refrigerant transition. Where a platform has to move off an HFC and cannot keep re-planning the transition as each new threshold arrives, a compressor already running on a non-fluorinated refrigerant removes that recurring step. The shared 305 mm height and 9.8 by 12.9 mm ports across the two SG models also mean the envelope does not change when duty is resized within the series.
• Heat pump duty, subject to confirmation. R290 is the Commission's listed alternative for domestic and industrial heat pumps, but heat pump duty is not among the four applications printed on this model's page. Confirm the application envelope for heat pump operation against the GMCC datasheet before specifying it that way.

Selection checklist

1. Confirm the refrigerant and service regime. R290 is a hydrocarbon, so the oil, expansion device, pipe sizing and service tooling must all be specified for R290 rather than carried over from an HFC design.
2. Confirm you can meet the A3 requirements. Charge limits, ventilation, leak detection and the siting of electrical parts are part of the design, and the appliance must be assessed against the product safety standard that covers A3 refrigerants.
3. Check the appliance against the market timetable. R290 is outside the F-gas prohibition dates listed above, but the equipment class, charge and rated capacity still decide which rules the finished product answers to. Verify the schedule for the destination market.
4. Size on capacity at the design point. 4,755 W is an ASH condition figure and should not be compared with a rating quoted under another condition.
5. Verify the mechanical envelope: 305 mm height, 9.8 mm discharge and 12.9 mm suction pipe inner diameter, and 55/400 µF/V capacitor.
6. Confirm the supply and drive arrangement. The published supply is 230 V, 50 Hz, single phase, and the seller lists the model as an inverter compressor. Confirm the drive and control requirements on the datasheet before finalising the electrical design.
7. Request the GMCC datasheet and performance table for the exact string DSG320S1UFT, together with the certificate set your market requires.
8. Confirm warranty, documentation and test report status in writing.

Frequently asked questions

What refrigerant does the GMCC DSG320S1UFT use?

It uses R290, which is propane. The catalogued global warming potential is 0.02 and the safety group is A3, both as published by the European Commission from Annex I and II of Regulation (EU) 2024/573. Because propane is a hydrocarbon and not a fluorinated gas, no global warming potential threshold in the F-gas prohibition schedule can be applied to it as a substance.

Why choose R290 rather than R32?

R32 is an HFC with a global warming potential of 675. It clears the 750 threshold that applied to single split systems from January 2025, but split air-to-air equipment up to 12 kW is prohibited above GWP 150 from 2029, larger split systems above GWP 150 from 2033, and split systems up to 12 kW containing any fluorinated gas from 2035. R290 is not fluorinated, so it is not reached by those dates. R32 is a genuine near-term answer; R290 is the answer that does not need replacing again.

What is the displacement and capacity of the DSG320S1UFT?

The GMCC rotary compressor catalogue lists 31.8 cm³/rev displacement, 4,755 W (16,224 Btu/h) cooling capacity, 1,390 W input power and a COP of 3.42 W/W for this model under the ASH test condition. The seller page prints the same capacity, input and capacitor values and rounds the displacement to 32 cm³/rev.

Is the DSG320S1UFT an inverter compressor?

The product page lists it in the GMCC Toshiba Inverter Compressor family. The manufacturer catalogue row reviewed for this guide prints the series, refrigerant, displacement, capacity, input, capacitor and connection sizes, and does not itself print a drive type. Treat the inverter designation as a seller published statement and confirm it, together with the supply and drive requirements, on the GMCC datasheet for this exact model string.

Is R290 safe to use?

R290 is classified in safety group A3, which is the higher flammability classification, and it is widely used in sealed refrigeration and air conditioning equipment under design rules written for that class. The practical answer is that safety is a design question rather than a substance question: charge limits, ventilation, leak detection and ignition source control must comply with the standard edition in force in the destination market. For heat pumps, air conditioners and dehumidifiers that is IEC 60335-2-40:2022, whose scope covers group A3 refrigerants.

Can the DSG320S1UFT replace an R410A compressor of similar capacity?

Not as a drop-in. R410A is a blend of R-32 and R-125 at 50.0 and 50.0 percent by mass, so it behaves differently from a single substance, and a switch to R290 changes the refrigerant, the oil, the charge and the safety classification of the finished product at the same time. Compressor dimensions can match while everything around them has to be re-specified and re-tested.

Data sources and verification notes

This guide labels the strength of every source it uses.

1. GMCC Rotary Compressor Catalogue (PDF, 2024 edition). Used for the R290 section, the SG series table, this model's specification row, the DSG310S1UFT row, the four column values shared with the seller page, and the model naming legend. Primary source. Current editions are published on the GMCC official downloads page.
2. GMCC Emerging Markets Rotary Compressor Catalogue (PDF, printed February 2022). Used for the model naming legend entries R, L, T, V, Y and P. Primary source.
3. Qishanr DSG320S1UFT product page. Used for the power supply, the published applications, the inverter designation, and the confirmation of capacity, input and capacitor values. Company published material.
4. European Commission, climate-friendly alternatives to F-gases, stationary air conditioning and heat pumps (page last updated 9 April 2025). Used for the R290 global warming potential of 0.02 and its safety group of A3, the R32 figures of 675 and A2L, the application classes for which R290 is the listed alternative, and the entire prohibition timetable. Values are taken from Annex I and II of Regulation (EU) 2024/573. Regulatory source.
5. Applicable standards. ANSI/ASHRAE Standard 34 refrigerant designations supplied R290 as propane with the formula CH₃CH₂CH₃, R32 as difluoromethane, and R410A as a 50.0/50.0 blend. IEC 60335-2-40:2022 is the product safety standard for electrical heat pumps, air conditioners and dehumidifiers whose scope covers safety groups A1, A2L, A2 and A3. IEC 60335-2-34:2024 covers the safety of sealed motor compressors. ISO 5149-1:2014 covers refrigerating system safety and environmental requirements. 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.
6. Regulatory and market sources. Regulation (EU) 2024/573 on fluorinated greenhouse gases, and The Future of Heat Pumps from the IEA, where the estimate is that heat pumps could cut global carbon dioxide emissions by at least 500 million tonnes in 2030.
7. Sheet and listing sources (weak). Seller product pages for the smaller R290 models linked in this guide were read for displacement and capacity. Two of those pages print a copy-paste error in the refrigerant row of their detail table, contradicting the R290 given in the page title and its first specification bullet. The R290 identification comes from the page titles, the specification bullets and the catalogue, not from those table rows.

Explicitly not verified. The global warming potential of R410A is not stated on the regulatory page used here, so no figure for it appears in this guide. The inverter designation rests on the seller page and is not printed in the catalogue row. The cylinder count is not decoded, because the published naming legend does not map this model string. Rated figures are catalogue data under the ASH condition and are not third party test results. No certificate held by this model has been sighted.

How to close the gaps. Request from GMCC or an authorised distributor a datasheet and a performance table for the exact string DSG320S1UFT, stating refrigerant, displacement, drive type, rated condition, capacity, power, COP, connection sizes, mass and electrical rating. Add the figures to this file when they arrive and mark them verified.