Baxi Air Source Heat Pumps 2026: HP60, HP40 & £500 Cashback
Baxi has been heating UK homes for over 150 years, and their air source heat pump range represents the next chapter — purpose-built for the British retrofit market. The flagship HP60 R290 raises the bar with high-temperature performance on a natural refrigerant, while the established HP40 range continues to win favour for its no-fuss design and breadth of output sizes. Both are backed by £500 per-installation cashback for Baxi Works members running until 31 July 2026 — making right now an excellent time to act.
This guide covers both heat pump ranges, the matched cylinder options, the cashback promotion, the Baxi MCS Umbrella Scheme for non-accredited installers, and how homeowners can get a tailored heat pump estimate using the Spruce tool.
"The HP60 ASHP delivers reliable performance and quiet operation using a low GWP 3 refrigerant, helping meet today's expectations and tomorrow's regulations — with a seasonal coefficient of performance of up to 5.34 and sound power equivalent to a refrigerator hum."
Why Choose the Baxi HP60?
Launched in October 2025, the HP60 is Baxi's most technically advanced domestic heat pump. Here's what makes it stand apart in the 2026 ASHP market.
R290 Natural Refrigerant
Uses propane (R290) with a Global Warming Potential of just 3 — one of the lowest available and future-proofed against upcoming F-Gas regulations.
High-Temperature Output
Delivers flow temperatures up to 75°C at −10°C ambient — meaning it can replace a gas boiler without requiring an immediate emitter upgrade on most properties.
SCOP Up to 5.34
A Seasonal Coefficient of Performance of 5.34 means for every unit of electricity consumed, over 5 units of heat are delivered — significantly cutting running costs.
Ultra-Quiet: 48 dB(A)
Sound power from 48 dB(A) is comparable to a household refrigerator — ideal for installations close to boundaries, bedrooms, or garden rooms.
Operates to −25°C
Designed to perform in ambient temperatures from −25°C to +35°C, ensuring reliable heat delivery through the harshest UK winters.
Magnetic Filter Included
Comes with a magnetic filter and Y-strainer as standard to protect the heating system and extend service life — no additional purchase required.
Monobloc — No F-Gas Cert Required
Hermetically sealed refrigeration circuit means no F-Gas qualification is needed to install — reducing barriers for the wider installer community.
Up to 7-Year Warranty
Enhanced warranty available when registered on Baxi Works within the promotional window, giving homeowners long-term peace of mind.
Baxi HP60 R290 — The High-Temperature Monobloc
Seven models cover every typical domestic scenario — from a compact 4kW suited to a well-insulated flat through to a 13kW three-phase unit for larger properties. All are self-contained outdoor units requiring only hydraulic and electrical connections.
- 4kW / 6kW / 8kW / 11kW / 13kW
- Single & Three Phase
- R290 — GWP 3
- SCOP up to 5.34
- 75°C flow @ −10°C
- 48 dB(A) min
- −25°C to +35°C operation
- Magnetic filter included
- Up to 7yr warranty
| Model | Output | Phase | Max Flow Temp | Sound Power |
|---|---|---|---|---|
| HP60-4-1-PHMB | 4 kW | Single | 75°C | 48 dB(A) |
| HP60-6-1-PHMB | 6 kW | Single | 75°C | 48 dB(A) |
| HP60-8-1-PHMB | 8 kW | Single | 75°C | 48 dB(A) |
| HP60-11-1-PHMB | 11 kW | Single | 75°C | 48 dB(A) |
| HP60-13-1-PHMB | 13 kW | Single | 75°C | 48 dB(A) |
| HP60-11-3-PHMB | 11 kW | Three Phase | 75°C | 48 dB(A) |
| HP60-13-3-PHMB | 13 kW | Three Phase | 75°C | 48 dB(A) |
Baxi
HP60 R290 High Temperature Monobloc ASHP
4kW / 6kW / 8kW / 11kW / 13kW
Baxi's latest generation domestic heat pump runs on natural R290 refrigerant, achieving SCOP up to 5.34 and flow temperatures up to 75°C at −10°C ambient. A magnetic filter and Y-strainer are included as standard. Compatible with the Baxi ASHP Pre-plumbed Cylinder for a complete, fully integrated system. Eligible for the £500 Baxi Works cashback promotion.
From £3,390.00 Inc. VAT | £2,825.00 Exc. VAT
💡 Sizing guidance: As a general rule, a well-insulated 3-bed UK home typically needs a 7–10kW heat pump. Use the BTU Calculator or contact our team for a heat loss assessment before specifying. The HP60-8-1 is the most popular choice for mid-sized retrofits.
Watch: Baxi HP60 Air Source Heat Pump
See the HP60 in action — its performance credentials, installation overview, and what makes it the standout choice in the 2026 residential heat pump market.
Baxi HP40 — The Proven Mid-Temperature Monobloc
The HP40 has been the workhorse of the Baxi residential heat pump range since its launch, and it remains an excellent choice for installers and homeowners seeking a well-proven, competitively priced system. Available from 4kW to 13kW with both single-phase and three-phase options, the HP40 covers the full domestic spectrum.
Like the HP60, it's a fully self-contained monobloc design — all refrigerant handling is factory-sealed, so no F-Gas certification is required for installation.
- 4kW / 5kW / 7kW / 11kW / 13kW
- Single & Three Phase (11kW & 13kW)
- Smart app control via Baxi Energy App
- BUS integral controls
- Low ambient operation
- Quiet operation
- BUS frost protection built in
Baxi
HP40 4kW Monobloc ASHP
Ideal for smaller, well-insulated properties or flats. Compact monobloc design, app-enabled controls, and proven reliability across UK installations.
£2,220.00 Inc. VAT
Baxi
HP40 5kW Monobloc ASHP
A popular choice for 2-bed homes with good insulation. Quiet operation, smart controls, and compatible with the full range of Baxi ASHP cylinders.
£2,340.00 Inc. VAT
Baxi
HP40 7kW Monobloc ASHP
The most versatile size in the HP40 range — suitable for a typical 3-bed semi with loft insulation and cavity walls. A frequent choice for BUS-funded retrofits.
£2,610.00 Inc. VAT
Baxi
HP40 11kW Monobloc ASHP
Suited to larger properties or older homes with higher heat demand. Available in single-phase. Also available as 11kW three-phase for commercial-adjacent installs.
£3,110.00 Inc. VAT
Also available: HP40 13kW (£3,400) · HP40 11kW 3-Phase (£3,270) · HP40 13kW 3-Phase (£3,400)
HP60 vs HP40: Which Baxi Heat Pump Is Right for the Job?
Both ranges are excellent — the right choice depends on the property's current emitter system, hot water demand, and the homeowner's priorities.
| Feature | Baxi HP60 | Baxi HP40 |
|---|---|---|
| Refrigerant | R290 (GWP 3) | R32 |
| Max Flow Temperature | 75°C at −10°C | 60°C |
| SCOP (seasonal efficiency) | Up to 5.34 | Up to 4.5 |
| Outputs available | 4 / 6 / 8 / 11 / 13 kW | 4 / 5 / 7 / 11 / 13 kW |
| Three-phase models | ✓ 11kW & 13kW | ✓ 11kW & 13kW |
| Sound power | From 48 dB(A) | From 48 dB(A) |
| Ambient range | −25°C to +35°C | −20°C to +35°C |
| Magnetic filter included | ✓ Yes | ✓ Yes |
| F-Gas required | ✗ Monobloc — not required | ✗ Monobloc — not required |
| £500 cashback (Baxi Works) | ✓ Until 31 Jul 2026 | ✓ Until 31 Jul 2026 |
| Best suited to | Older homes, high-temp systems, ambitious retrofits | Well-insulated homes, new builds, lower-temp systems |
| Starting price (Inc. VAT) | From £3,390 | From £2,220 |
Complete the System: Baxi ASHP Cylinders
A heat pump is only as good as its hot water system. Baxi manufactures two cylinder ranges specifically optimised for use with the HP60 and HP40 — both produced in the UK in collaboration with Heatrae Sadia. Pairing a Baxi cylinder with a Baxi heat pump delivers the best seasonal performance, correct flow rates, and a single point of warranty support.
Baxi
ASHP Pre-plumbed Cylinder
170L / 210L / 250L / 300L
Factory pre-plumbed unvented stainless steel cylinder with G3 kit included. Engineered for plug-and-play integration with Baxi heat pumps — reduces installation time significantly. Large coil heat exchanger optimised for low-temperature heat pump operation. 10-year manufacturer warranty.
From £2,995.00 Inc. VAT
Baxi
ASHP Cylinder
210L / 250L / 300L Stainless Steel
High-grade duplex stainless steel, 60mm factory insulation, and an optimised large-coil heat exchanger for efficient heat transfer from the heat pump. Strong water pressure for fast-filling baths and powerful showers. Ideal where pre-plumbing isn't required. 10-year warranty.
From £2,350.00 Inc. VAT
Baxi
210L ASHP Cylinder
210 litres provides ample daily hot water for a family of 3–4. UK-manufactured in collaboration with Heatrae Sadia, with duplex stainless steel construction and 10-year warranty.
£1,900.00 Inc. VAT
Baxi
300L ASHP Cylinder
High-capacity 300-litre cylinder for larger homes or high-demand households. 60mm insulation, duplex stainless construction, and a large heat-pump-optimised coil for efficient heat transfer. 10-year warranty.
£1,990.00 Inc. VAT
🔧 Sizing cylinders for heat pumps: A heat pump charges a cylinder more slowly than a boiler, so larger cylinders are always recommended. For a family of 4 using a heat pump, 210–250L is the minimum; 300L is ideal for comfortable DHW legionella cycling without excessive reheat periods.
£500 Per-Install Cashback — Ends 31 July 2026
Baxi is offering a £500 (inc. VAT) cashback payment to Baxi Works account holders for every qualifying HP60 or HP40 installation completed and registered before 31 July 2026. The promotion is uncapped — there's no limit on how many installs you can claim for.
Baxi HP60 R290
Per qualifying installation — inc. VAT
Promotion period: 6 October 2025 – 31 July 2026
Qualifying models: HP60-4/6/8/11/13-1-PHMB & HP60-11/13-3-PHMB
Baxi HP40
Per qualifying installation — inc. VAT
Promotion period: 12 May 2025 – 31 July 2026
Qualifying models: HP40-4/5/7/11/13 single-phase & HP40-11/13 3-phase
How to Claim — 4 Steps
- Install and commission the qualifying Baxi HP60 or HP40 at a domestic (non-new-build) property, supported by a valid MCS Installation Certificate.
- Register the product on your Baxi Works account within the promotional period (by 23:59 on 31 July 2026).
- Upload the MCS Installation Certificate and add your company UK bank account details in the "My Offers" section of Baxi Works — bank details must match the registered business name.
- Baxi will pay £500 via BACS to your company bank account, aiming for within 28 days (allow up to 45 days).
Key conditions: Open to Baxi Works account holders aged 18+ in the UK. Domestic non-new-build properties only. Each serial number can only be claimed once. Standard Baxi Works points also apply. Qualifying Products are not eligible for any other Baxi promotion simultaneously. Full T&Cs govern all claims.
More Ways to Get the Most from Baxi Heat Pumps
Beyond the cashback, Baxi offers two valuable tools — one for installers looking to access the Boiler Upgrade Scheme without full MCS accreditation, and one for homeowners wanting a fast heat pump estimate.
Baxi MCS Umbrella Scheme
— For Installers
If you're a heating engineer who isn't yet MCS-accredited, the Baxi MCS Umbrella Scheme lets you install Baxi heat pumps under Baxi's MCS registration — meaning your customers can still access the £7,500 Boiler Upgrade Scheme grant from day one, without you needing to achieve full MCS certification first.
The scheme covers qualifying Baxi HP40 and HP60 installations at domestic properties across England, Scotland, and Wales. This is a significant opportunity for installers transitioning into the heat pump market, removing the accreditation barrier while Baxi provides technical support, design, and compliance guidance.
Learn About Baxi MCS Umbrella →Get a Heat Pump Estimate
— Powered by Spruce
Not sure if your home is ready for a heat pump, or what size and cost to expect? Use the Baxi-powered Spruce estimate tool to get a personalised heat pump recommendation — including estimated output, system configuration, and indicative cost — in minutes, without waiting for a site survey.
The Spruce tool is designed by heat pump specialists and uses your property details to model the most suitable Baxi system. It's a useful first step for homeowners exploring the switch from gas, or for installers wanting to prepare customers ahead of a survey visit.
Request a Heat Pump Estimate →Complete Your Baxi Heat Pump System
Beyond the heat pump and cylinder, a well-designed system includes a buffer vessel (for improved cycling performance and system hydraulic separation), smart controls, and appropriate accessories.
Baxi
40L Buffer Vessel for ASHPs
Reduces heat pump short-cycling, improves defrost performance, and provides hydraulic separation where needed. A best-practice addition on properties with lower heat loss that may cause frequent on/off cycling.
£690.00 Inc. VAT
Baxi
Heat Pump Rubber Floor Support (Pack of 3)
Anti-vibration rubber feet designed for Baxi heat pump outdoor units. Reduces transmitted vibration to adjacent structures and is recommended for installations on solid bases adjacent to buildings.
£130.00 Inc. VAT
How an Air Source Heat Pump Works
Heat pumps don't generate heat — they move it. Understanding this is key to setting correct homeowner expectations and sizing the system accurately.
Heat Extraction from Outdoor Air
A fan draws outdoor air across the evaporator coil. The liquid refrigerant (R290 in the HP60) absorbs heat energy from the air and evaporates into a gas, even at temperatures as low as −25°C.
Compression Raises the Temperature
An inverter-driven compressor pressurises the refrigerant gas, significantly raising its temperature. This is where the electrical input is used — typically 1 kWh to move 4–5 kWh of heat.
Heat Transfer to the Heating Circuit
The hot refrigerant gas passes through a condenser/plate heat exchanger, transferring heat to the home's central heating water circuit — which flows to radiators, underfloor heating, or the cylinder coil.
Refrigerant Resets — Cycle Repeats
The refrigerant is expanded back to a low-pressure liquid through an expansion valve and the cycle begins again. The Baxi HP60's inverter modulates output continuously to match demand, maximising efficiency.
Ready to Specify a Baxi Heat Pump?
Browse the full HP60 and HP40 ranges, matched cylinders, and accessories — all with UK express delivery. Installers: don't miss the £500 cashback window, which closes 31 July 2026.