The Brand Concession Space
Four world-class heat pumps. One obsession with quality.
We install only R290 propane heat pumps from manufacturers we would fit in our own homes. Step inside each brand’s concession, meet its flagship model, and see exactly why it earns a place on a Greenmotion install.
Remscheid, Germany · est. 1874
aroTHERM plus
German engineering, natural refrigerant, whisper quiet.
The aroTHERM plus is the heat pump we install most — and for good reason. It runs on R290 propane, a natural refrigerant with a global warming potential close to zero, and it holds a genuine 75°C flow temperature even in the depths of a British winter. That combination lets us retrofit period homes without ripping out every radiator, while still delivering class-leading efficiency.
5.39
Peak COP
75°C
Flow temp
44.1 dB(A)
Sound from
−20°C
Down to
R290 natural refrigerant
Propane with a GWP of 3 — futureproof against every planned F-gas phase-down.
True 75°C flow
High enough to run existing radiators in most retrofits without oversizing.
sensoCOMFORT control
Weather compensation that reads outdoor temperature and adjusts output in real time.
Whisper-quiet fan
From 44.1 dB(A) — quieter than a domestic fridge at typical listening distance.
Vaillant aroTHERM plus range
| Model | Output | Efficiency | Max flow | Sound | Operating range |
|---|---|---|---|---|---|
| VWL 35/6 | 3.5 kW | 4.92 | 75°C | 44.1 dB(A) | −20°C to +43°C |
| VWL 55/6 | 5.5 kW | 4.92 | 75°C | 44.3 dB(A) | −20°C to +43°C |
| VWL 75/6 | 7.5 kW | 4.94 | 75°C | 46.8 dB(A) | −20°C to +43°C |
| aroTHERM plus L VWL 105Twin-fan | 10 kW | 5.29 | 75°C | 50 dB(A) | −20°C to +43°C |
| aroTHERM plus L VWL 125Twin-fan | 12 kW | 5.39 | 75°C | 50 dB(A) | −20°C to +43°C |
Why we fit it
We pair every aroTHERM plus with the Vaillant sensoCOMFORT weather-compensating control and appliance interface, so the system continuously trims its output to the exact heat loss of your home. It is the backbone of our low-flow-temperature design philosophy.
Allendorf, Germany · est. 1917
Vitocal 250-A
Patented hydraulics, super-silent, and beautifully simple to live with.
The Vitocal 250-A is Viessmann’s R290 monobloc and one of the most refined units on the market. It reaches a 70°C flow temperature even when it is −10°C outside, with a COP of up to 5.4. What sets it apart is Viessmann’s patented “Hydro AutoControl” hydraulics, which cut installation time and the space needed inside your home dramatically.
5.4
Peak COP
70°C
Flow temp
2.1–18.5 kW
Output
Super Silent
Mode
Hydro AutoControl
Patented integrated hydraulics reduce install time and internal footprint by up to 60%.
70°C at −10°C
Holds high flow temperatures deep into winter for confident radiator retrofits.
ViCare + One Base
Elegant app control and full integration with the Viessmann One Base platform.
Super Silent mode
Night-time acoustic mode for the most noise-sensitive gardens and boundaries.
Viessmann Vitocal 250-A range
| Model | Output | Efficiency | Max flow | Sound | Operating range |
|---|---|---|---|---|---|
| Vitocal 250-A (small) | 2.1–10.7 kW | 5.4 | 70°C | Super Silent mode | to −15°C |
| Vitocal 250-A (large) | up to 18.5 kW | 5.2 | 70°C | Super Silent mode | to −15°C |
Why we fit it
When a home has limited plant-room space or an owner who wants the cleanest possible install, the 250-A is our pick. The Super Silent operating mode and the ViCare app make it one of the most liveable systems we offer.
Holzminden, Germany · est. 1924
WPL-A
Built for the coldest days — operating down to −25°C.
The WPL-A is Stiebel Eltron’s R290 monobloc, engineered for resilience. It delivers a 75°C flow temperature and keeps working down to a remarkable −25°C outside — ideal for exposed rural properties and high-altitude Midlands homes. Inverter-driven and A+++ rated, it modulates smoothly to match demand.
75°C
Flow temp
−25°C
Down to
A+++
Rating
43 dB(A)
Sound from
−25°C operation
One of the widest operating envelopes available — full heat when it matters most.
Inverter A+++
Variable-speed compressor modulates output precisely, avoiding wasteful cycling.
Silent Mode
Reduced-noise profile for evenings and tight boundaries.
Active cooling
Reversible operation delivers gentle cooling through the summer months.
Stiebel Eltron WPL-A range
| Model | Output | Efficiency | Max flow | Sound | Operating range |
|---|---|---|---|---|---|
| WPL-A 07.2 Plus | 7.1 kW | A+++ | 75°C | 43 dB(A) | −25°C to +40°C |
| WPL-A 13.2 Plus | 13.15 kW | A+++ | 75°C | 45 dB(A) | −25°C to +40°C |
Why we fit it
For homes where winter reliability is non-negotiable, the WPL-A’s cold-climate credentials are hard to beat. Its Silent Mode and active cooling option make it a genuine year-round comfort system.
Devon, UK · Irish-founded, UK-focused
Aerona 290
Quiet Mark accredited, MCS listed, backed by a 7-year guarantee.
The Aerona 290 is Grant’s fifth-generation inverter monobloc, running on R290 and engineered specifically for the UK market. Every model is MCS listed and Quiet Mark accredited, with an A+++ ErP rating at 35°C. A DC twin-rotary compressor and built-in refrigerant leak sensor make it a dependable, low-maintenance choice.
5.08
Peak SCOP
A+++
Rating
4–15.5 kW
Range
7 years
Guarantee
Quiet Mark accredited
Independently certified for low-noise operation — kind to you and your neighbours.
MCS listed
Every model qualifies for the Boiler Upgrade Scheme grant — £7,500, or £9,000 for oil & LPG homes from 21 July 2026.
Leak-sensor safety
Built-in refrigerant leak detection for total peace of mind with R290.
7-year guarantee
Long-term cover when installed by an accredited G1 installer like Greenmotion.
Grant Aerona 290 range
| Model | Output | Efficiency | Max flow | Sound | Operating range |
|---|---|---|---|---|---|
| Aerona 290 – 4 kW | 4 kW | SCOP 5.00 | 65°C | Quiet Mark | −25°C to +35°C |
| Aerona 290 – 6.5 kW | 6.5 kW | SCOP 5.08 | 65°C | Quiet Mark | −25°C to +35°C |
| Aerona 290 – 9 kW | 9 kW | SCOP 4.74 | 65°C | Quiet Mark | −25°C to +35°C |
| Aerona 290 – 12 kW | 12 kW | SCOP 4.74 | 65°C | Quiet Mark | −25°C to +35°C |
| Aerona 290 – 15.5 kW | 15.5 kW | SCOP 4.56 | 65°C | Quiet Mark | −25°C to +35°C |
Why we fit it
The Aerona 290 gives homeowners a strong UK support network and a 7-year guarantee when installed by an accredited G1 installer — which we are. Its range spans 4 kW to 15.5 kW, so it scales neatly from flats to large family homes.
Not sure which brand is right for your home?
That is our job. We start with a full heat-loss survey, then specify the exact model and output for your property — with the Boiler Upgrade Scheme grant (£7,500, or £9,000 for oil & LPG homes from 21 July) and 0% VAT applied. No pressure, no jargon.