R290 propane heat pumps: the natural refrigerant on the rise

Why R290 propane is gaining ground in heat pumps in 2026

R290: a natural refrigerant that meets market expectations

R290 is propane. A natural refrigerant with very low climate impact, far from classic HFCs. As a result, manufacturers can offer heat pumps that look "cleaner" on paper, without sacrificing performance. For you, it's also a simple argument to explain: less high-GWP gas, more consistency with a well-executed energy renovation.

What's changing in 2026: availability, client requests and site requirements

In 2026, European F-gas regulation and the drop in HFC quotas are accelerating the shift. There are more product ranges, more stock, and better-informed clients. The flip side: propane is flammable. Installation needs to be carefully framed. For more on fluorinated gases and heat pump alternatives, you can also compare the options being considered in 2026.

• More R290 ranges from major manufacturers.
• "R290" requests as early as the quoting stage, especially for replacements.
• Stricter safety requirements on siting and ventilation.

Air-to-water heat pumps: where R290 really makes a difference (renovation, fuel/gas replacement)

R290 shines when you need to raise the temperature for existing radiators. Many models target high flow temperatures, useful in renovation and when replacing an oil or gas boiler. In practice, monobloc R290 heat pumps limit the amount of refrigerant indoors. You gain simplicity, provided you respect distances, volumes and a suitable location.

R290 heat pumps: performance, comfort and limits to know

Efficiency and flow temperatures: what you can promise (and what to avoid)

An R290 heat pump is at ease in renovation, since it can target higher flow temperatures than many "classic" models. Above all, promise a well-sized and well-controlled system, with a finely tuned heating curve. Avoid promises like "70° all season" or "zero backup" without a heat-loss calculation and without checking the emitters.

Noise, defrosting, domestic hot water comfort: points of attention in a single-family home

Comfort is decided outdoors. Pay attention to the siting (distance from neighbors, anti-vibration mount) and set a target for controlled nuisance. In winter, defrosting is normal. It can cause temperature swings and a lot of water, even ice. Plan for drainage and a location that doesn't turn the driveway into a skating rink. For domestic hot water, check the usable volume and draw-off peaks, not just the power rating.

Compatibility with existing radiators and underfloor heating: common cases in renovation

With existing radiators, the question is simple: at what temperature does the home hold its setpoint when it's cold? If the radiators are borderline, compensate with more emitting surface or fan coil units, rather than permanently "raising the temperature." With underfloor heating, it's a natural match: low flow temperature, stable control, good efficiency.

Site safety: handling propane on a heat pump, without taking risks

R290 and flammability: common-sense rules and zones to secure

R290 (propane) is a highly flammable refrigerant. On site, ban flames, cigarettes and sparks nearby. Cut the power, ventilate, then mark out a clear work zone. Think about low points, since propane is heavier than air. A suitable gas detector and extinguisher help you work with peace of mind.

Siting the outdoor unit: ventilation, distances and common mistakes

For the heat pump's outdoor unit, look for open air. Avoid recesses, narrow walkways and any poorly ventilated "corner." Respect the manual's distances from openings, basement windows, grilles and ignition sources. Common mistake: installing too close to a gutter, a manhole or a pit where a gas cloud could settle.

Transport, storage and service calls: best practices for your teams

During handling and storage, keep recovery cylinders secured, upright, shaded, in a ventilated area. For service calls, use A3-compatible tools, work with doors open if possible, recover the refrigerant into a certified cylinder, then check leak-tightness before putting the unit back into service.

Installing and commissioning an R290 heat pump: the right field methods

Sizing: avoiding over/undersizing and short cycling

For an R290 heat pump, start from actual heat loss and the local design temperature. The goal is the right power to cover most of the season without constant start-stop cycling. On networks with a low water volume, prevent short cycling by taking care of the usable volume and the settings rather than by "oversizing" the machine.

Hydraulics and settings: balancing, heating curve, backup and frost protection

Clean hydraulics mean guaranteed comfort. Degassing, filter, compliant flow rate, balancing valves and a properly sized circulator. Then come the fine-tuned settings. Calibrate the heating curve to the emitters, limit the flow temperature, configure the backup as a last resort, and secure frost protection (sensors, circulation, glycol if needed depending on the configuration).

Handover checks: tests, key parameters and traceability for the client

At commissioning, check the power supply, protections, flow direction, delta T, flow rate, noise, domestic hot water and defrost cycles. Also check setpoints and time schedules. Hand over clear evidence: commissioning report, photos, equipment references, initial settings and usage advice. The client understands, and you can rest easy.

2026 grants and sales arguments for selling a propane heat pump

MaPrimeRénov' and CEE: what to check before quoting a heat pump

Before quoting, check eligibility for MaPrimeRénov' 2026 (income profile, home type, replacing a heating system) and the performance requirements. On the CEE side, start from the standardized operation sheet matching the heat pump (air-to-water, geothermal) and check that the installed equipment and its efficiency figures are consistent with the file. Also consider combining MPR + CEE and the caps involved. A well-framed quote avoids bad surprises.

RGE and applications: documents to provide to avoid grant rejections

To limit rejections, secure the documentation chain.

• Valid RGE proof (QualiPAC) at the signing date.
• Detailed quote and invoice (brand, reference, power, R290 refrigerant).
• Required certificates (CEE, MPR), bank details, tax notice, project address.
• Proof of removal and commissioning if required. Nothing missing, the file goes through.

Talking to clients: natural refrigerant, energy efficiency and running costs (without overselling)

Explain simply that propane (R290) is a refrigerant with very low climate impact, useful for getting ahead of the decline in HFCs. Sell efficiency with facts: good controls, a suitable water temperature, and a properly insulated home make the difference on the bill. Announce a range of running costs, not an automatic promise. A high-performing heat pump, yes. A miracle, no.