Tecumseh at Chillventa 2026: R290 and A2L Compressor Platforms Explained

Chillventa 2026 ran from 13 to 15 October at the NurnbergMesse exhibition centre in Nuremberg, Germany, and Tecumseh used the show to present a new generation of compressors and refrigeration systems built around lower-GWP refrigerants. The company exhibited in Hall 4, Booth 4-307. For buyers of hermetic rotary compressors the announcement matters less for the booth itself than for what it says about the direction of the range: displacement spans are now published by platform, the refrigerant story is split between R290 and A2L, and horsepower is no longer the primary number Tecumseh uses to describe a compressor.

This article reads the announcement against the manufacturer's published data. It sets out what was announced, what those numbers actually cover, where the new platforms sit relative to the rotary families available today, and which figures remain unpublished. Where a value has not been published, it is left out rather than estimated.

Key facts at a glance

The upper rows are event facts with a single named source. The middle rows are platform facts: they describe a span, not a model. The last row is the boundary of this article. Tecumseh published displacement ranges for the new platforms but did not publish capacity, coefficient of performance, sound data, or individual model numbers, so none of those values appear here.

What did Tecumseh present at Chillventa 2026?

The headline of the announcement was a portfolio built for the transition to lower-GWP refrigerants, covering commercial refrigeration and air conditioning. The full text of Tecumseh's Chillventa 2026 announcement is published on the manufacturer's newsroom. Tecumseh described the display as technologies that can be combined into complete refrigeration applications rather than a set of isolated components, and it used the show to present its new global brand identity under the positioning Empowering Everyday Life, Everywhere.

Three compressor platforms were named for compact and light commercial duty, and one scroll family for larger duty. On the systems side, Tecumseh named a fractional condensing platform, an outdoor condensing unit for A2L refrigerants, and a variable-speed scroll chiller-style condensing solution. The full list is set out below with only the values the manufacturer published.

Two things are worth noticing in that table. First, the compact platforms are described by displacement, not by horsepower. Second, the only platform that crosses refrigerant classes is Axion, which is offered for both R290 and A2L. Those two observations drive most of the selection work that follows.

Nexus and Vector: fixed speed and variable speed R290 platforms

Nexus and Vector overlap in displacement but not in control strategy. Nexus is a fixed speed platform spanning 2 to 15 cc. Vector is a compact variable speed platform spanning 4 to 13 cc, and Tecumseh describes its purpose as continuous capacity modulation to match changing cooling requirements, with food service and retail named as the target applications.

For a system designer the difference is not a preference. A fixed speed compressor runs at one speed and cycles, so the design question is how much cycling the cabinet or room can tolerate and how the expansion device behaves at part load. A variable speed compressor changes speed to hold capacity, which shifts the design question to the controller, the speed range actually usable in the application, and the turndown the evaporator can support. Vector's published 4 to 13 cc span tells you the machine class; it does not tell you the capacity at any evaporating temperature, because that curve has not been published.

Both platforms use R290, which is an A3 refrigerant. That classification is the constraint that decides more projects than displacement does: charge limits, risk assessment, ventilation, and service practice all follow from it, and they are set by the safety standards applied in the destination market rather than by the compressor vendor. A 13 cc R290 rotary and a 13 cc A2L rotary are not interchangeable at the system level even when the envelope fits, because the safety case around them is different.

Axion: 22 to 33 cc across R290 and A2L

Axion is the largest of the three compact platforms, covering 22 to 33 cc, and the only one offered for both R290 and A2L refrigerants. The practical value of a single platform across two refrigerant classes is that an equipment maker can keep one mechanical envelope and one set of mounting and pipe interfaces while changing refrigerant according to market or customer. That reduces redesign cost when a product line is adapted for a country where one refrigerant class is easier to deploy than the other.

The limit of the published data is worth stating plainly. Tecumseh did not name which A2L blends Axion covers, did not publish capacities at any rating condition, and did not publish a model nomenclature. A buyer comparing Axion against a scroll for a duty inside the Axion band therefore has a displacement match and a refrigerant match, and nothing else that can be compared numerically. In that situation the only sound next step is to request the model-level data sheet for the specific refrigerant and rating condition.

Where compact compressors end and Spirion scroll begins

The published spans leave a visible gap. Nexus reaches 15 cc, Axion starts at 22 cc, and Vector stops at 13 cc. Between roughly 15 and 22 cc the announcement does not describe a compact-platform option. Spirion, the scroll family, is specified up to 13 HP and covers R290, A2L and A1 components, so it overlays the upper end of the compact range rather than starting strictly above it.

That overlap is normal and it is not a mistake. Rotary and scroll compressors are selected on different criteria at the same displacement: pressure ratio and discharge temperature, behaviour at high condensing temperature, footprint and orientation, vibration, and the cost of the surrounding system. A rotary is compact and suits appliances and small packages; a scroll handles larger duty and typically more demanding pressure ratios. The displacement ranges tell you where to look, not which technology wins.

What the announcement does not do is give a rule for the boundary. Anyone who needs a boundary should build it from the published performance curves of the candidate models at the actual evaporating and condensing conditions, not from the platform spans.

Condensing units: Orion, Astra and Silensys

The systems side of the booth matters to distributors because it moves the service boundary. Orion is described as a global fractional systems platform with a compact footprint and multi-refrigerant capability, aimed at refrigeration equipment manufacturers. Astra is an outdoor condensing unit platform for A2L refrigerants, positioned as a future-ready solution for commercial refrigeration. Silensys Scroll Inverter combines a variable-speed scroll compressor with acoustic treatment, is offered in a 3 to 19 kW range, and is aimed at high efficiency with low noise.

For a buyer, the practical difference between buying a compressor and buying a condensing unit is where the engineering responsibility sits. A condensing unit arrives with the matching, the receiver, the controls and the acoustic package already decided, which shortens installation but narrows the refrigerant and capacity choices to what the platform supports. A bare compressor leaves those choices open and pushes the work back to the equipment designer.

What EU refrigerant rules mean for compressor selection

The regulatory frame in Europe is the F-gas Regulation (EU) 2024/573, which sets the HFC phase-down and the equipment bans that drive equipment makers toward lower-GWP refrigerants. In practice the regulation does not choose a compressor for you; it narrows the refrigerant list, and the refrigerant then determines the compressor family, the safety class, and the service infrastructure.

Two consequences follow for rotary selection. First, R290 equipment is an A3 application, so the charge limit and the safety assessment are project constraints that must be settled before a displacement is chosen. Second, A2L equipment is a different safety class with different charge limits and different service practice, which is why a platform offered in both classes, such as Axion, is commercially useful but not a substitute for a per-project safety case.

Installation requirements are set out in the rotary compressor installation and operation manual, and they are not interchangeable between refrigerant classes: an R290 machine and an A2L machine of the same displacement have different requirements for ventilation, leak detection and service procedure.

Demand-side context for the refrigerant transition is covered by the International Energy Agency's Future of Cooling report, which remains the standard reference for how cooling demand is growing in the markets that buy this equipment.

Performance figures should be read on a stated basis. EN 12900 is the European standard for rating refrigerating compressors, covering rating conditions, tolerances and the presentation of performance data; a capacity quoted without its evaporating temperature, condensing temperature, suction gas temperature and liquid temperature is not a comparable number. The model-level figures later in this article are quoted with all four conditions for that reason.

How to read the Tecumseh rotary range today

The rotary families that a buyer can specify today are RK and HG. They are broader in refrigerant coverage than the new platforms and they are the families that actually appear in distributor stock while the new platforms roll out. Each is documented by the manufacturer: the RK series product family and the HG series. A third small family, the VTC series, is often filed beside them because it covers a comparable displacement band, but it is not a rotary: Tecumseh presents VTC as a variable speed reciprocating compressor, and the rotary compressor manual covers the RK, RG and HG ranges, not VTC.

The VTC span is worth comparing with the new platforms. Vector, the compact variable speed R290 platform announced at Chillventa, is published at 4 to 13 cc, the same span VTC covers today. That coincidence is the clearest signal in the announcement about how the new platform relates to the existing family, and it is the reason a buyer already running VTC should ask for a side-by-side data sheet rather than assume a drop-in successor.

The model code deserves a warning. The digits after the family letters are not a linear displacement scale, and treating them as one produces wrong selections. Within the RK series, RKA5515CXD has a published displacement of 21.352 cc, RKA5513EXD has 18.142 cc, and RKA5490CXA has 12.865 cc. The numbers encode a body size and a capacity step, not a displacement that can be calculated from the digits. The only reliable route is the manufacturer's product lookup for the exact model string.

A second warning concerns the tail of the model string. Letters at the end of a Tecumseh rotary code identify build, voltage and motor variants, and two strings that differ by one letter can carry different refrigerants or different electrical data. RKA5515CXD is an R407C machine; the same body with a different tail is not automatically the same refrigerant. The model string, not the family page, is the unit of truth.

Which Tecumseh rotary models are available now

The table below uses two sources per row: the fields printed on our own product page for the stocked item, and the manufacturer's product lookup for the engineering data. Where the lookup returns nothing for a model string, the row says so instead of filling the gap.

One status note matters for anyone sourcing these machines. The manufacturer's lookup lists RKA5515CXD as an inactive product that is no longer being manufactured, while noting that inventory may still be purchasable. That is consistent with what a distributor sees: the model remains in the aftermarket and in stock, but it is not a forward-looking design choice. For new equipment, the current equivalent in the same body class should be confirmed with the factory before a design is frozen.

For buyers who need a different capacity within the same body class, the nearest stocked alternatives sit on either side of RKA5515CXD. RKA5515CHZ shares the capacity step with a different build tail, and RKA5512CXD sits one step lower; both are worth comparing against the required evaporating temperature before choosing.

The stocked Tecumseh rotary range is listed in full on the Tecumseh rotary compressor category page, and the wider Tecumseh programme, including the reciprocating models used for low-temperature duty, sits alongside it. Drawings, brochures and manuals for the range are collected in the technical download library, and the longer technical write-ups are indexed in the technical article index. Buyers who need the low-temperature end of the range usually cross over to the low-temperature Tecumseh piston range rather than pushing a high-back-pressure rotary below its envelope, and buyers working on refrigeration-duty rotary machines will find the rotary refrigeration compressors page more relevant than the air-conditioning listings.

What Tecumseh has not published

Four gaps are load-bearing, and none of them can be closed by calculation.

The first is capacity for the new platforms. The release gives displacement spans and one scroll horsepower ceiling, but no capacity at a stated rating condition. Without evaporating and condensing temperatures a displacement cannot be converted into watts, and any conversion would be an assumption about volumetric efficiency that the manufacturer has not published.

The second is the model nomenclature for Nexus, Vector and Axion. No model strings were released, so a buyer cannot yet ask for a specific machine; the platforms are described at family level only.

The third is the A2L blend list. Axion is described as covering R290 and A2L, but the release does not name which A2L refrigerants, and the choice affects oil, elastomers, charge limits and service equipment.

The fourth is availability. The release describes what was shown at the exhibition, not what is orderable, in which regions, or from when. A booth announcement is not a price list or a lead time.

This article was checked in three ways. Every event fact comes from the manufacturer's own release. Every model-level figure comes from the manufacturer's product lookup, with the rating conditions quoted alongside. Every claim about a stocked item comes from the product page for that item, and where the two sources do not meet, the gap is stated in the table rather than averaged away.

Frequently asked questions

Where was Tecumseh at Chillventa 2026?

Hall 4, Booth 4-307, at the NurnbergMesse in Nuremberg, Germany. The show ran from 13 to 15 October 2026. The official Chillventa site carries the exhibition programme.

What is the difference between Nexus and Vector?

Nexus is a fixed speed R290 platform spanning 2 to 15 cc. Vector is a compact variable speed R290 platform spanning 4 to 13 cc, aimed at continuous capacity modulation in food service and retail. The choice between them is a control-strategy decision, not a displacement decision.

Is Axion a replacement for the RK series?

No. Axion is a new compact platform covering 22 to 33 cc for R290 and A2L refrigerants. The RK series remains a separate family covering 1/2 to 1 3/4 HP for HBP and air-conditioning duty on R134a, R22, R407C and R410A. They differ in refrigerant scope and in the data published for each.

Can R290 compressors be used in commercial refrigeration in Europe?

Yes, subject to the safety rules that apply to A3 refrigerants. R290 equipment is governed by charge limits and risk assessment under the applicable safety standards, and the F-gas rules set the wider HFC phase-down and equipment bans that make lower-GWP options attractive. The compressor choice follows the safety case, not the other way round.

How do I choose between a 15 cc and a 22 cc platform?

Start from the required capacity at the actual evaporating and condensing temperatures, then check which platform covers it with margin. Displacement alone is not a selection criterion, because volumetric efficiency and speed differ between platforms. In the Chillventa announcement the two spans do not overlap, so the duty point decides the platform.

Why does this article quote ARI ratings for an R407C compressor?

Because that is the rating basis the manufacturer publishes for those model strings. The lookup gives capacity, input power and COP at 230 V 60 Hz and at 200 V 50 Hz with the evaporating, condensing, ambient, return gas and liquid temperatures stated. Quoting the number without those conditions would make it incomparable with any other compressor.

Are the new platforms available to buy now?

Tecumseh has not published availability, regional release or lead times for Nexus, Vector, Axion, Orion or Astra. The announcement describes what was presented at the exhibition. Buyers should treat published displacement spans as design guidance and request model-level data and availability from the factory or an authorised distributor.

Where can I source Tecumseh rotary compressors?

The stocked range is listed on the Tecumseh rotary category page, with model-level pages for each item. For models that the manufacturer lists as inactive, stock availability should be checked before a design is committed, because the listing and the factory status can diverge.

Sources

Product pages on this site were used for the stocked-item fields in the availability table, and the model status note comes from the manufacturer's lookup rather than from our listing.