Panasonic Aquarea Air Source Heat Pump

Japan
Price on quote
no published installed price

Panasonic sells its Aquarea air-to-water heat pumps in the UK through trained installers. The current L Series and T-CAP M Series use R290 refrigerant and supply water at up to 75°C, and ScottishPower's installer Plug Me In fits Aquarea for ScottishPower customers. British Gas signed a service and maintenance deal with Panasonic in March 2025.

Panasonic Aquarea air source heat pump price UK (2026)

Installed, before grant
Price on quote
After £7,500 BUS grant (illustrative)
Price on quote
Lowest running cost (est.)
~£635/yr

The Boiler Upgrade Scheme takes £7,500 off in England and Wales (£9,000 for off-gas homes replacing oil or LPG heating, until 31 March 2027); your MCS-certified installer claims it for you. Scotland uses the Home Energy Scotland grant and loan instead; Northern Ireland has no equivalent. 0% VAT until 31 March 2027 is already reflected. Panasonic Aquarea does not publish an installed price and no credible third-party figure exists, so we show none. For scale, the median Boiler Upgrade Scheme install cost £12,908 before the grant (DESNZ Boiler Upgrade Scheme median, April to June 2026). Running cost estimated at ~10,000 kWh of heat a year and 26.32p/kWh electricity (October to December 2026 cap). Accurate as at October 2026.

3yr
Standard warranty
7yr
Longest warranty (conditions apply)
4.71
Best SCOP at 35°C (MCS)
53 dB(A)
Lowest sound power (declared)

Warranty: Up to 7 years parts and labour when a Panasonic PRO Partner supplies and installs the system and submits the warranty extension online after commissioning. The 3-year standard term comes from Panasonic's 2017 scheme; no current Panasonic UK page states the base term.SCOP is the MCS-certified seasonal efficiency; sound power is the maker's declared ErP figure, the like-for-like noise measure (what you hear next door depends on distance and siting). Prices are indicative; confirm with your MCS-certified installer.

Available Models

Aquarea L Series 9kW

Price on quote
no published installed price
Size
9kW (WH-WDG09LE5)
9.0 kW at A7/W35; 7.0 kW at 2°C and -7°C outdoor
SCOP 35°C / 55°C (MCS)
4.71 / 3.57
Running cost (est.)
~£635/yr
Sound power
54 dB(A)
Suitable for
typical 3-bed semi
After £7,500 grant (illustrative)
Price on quote
Outdoor unit (HxWxD)
996x980x430mm
Weight
97kg

Aquarea T-CAP M Series 12kW

Price on quote
no published installed price
Size
12kW (WH-WXG12ME5)
holds its full 12 kW output at -7°C outdoor (35°C flow)
SCOP 35°C / 55°C (MCS)
4.62 / 3.55
Running cost (est.)
~£645/yr
Sound power
53 dB(A)
Suitable for
larger 4-bed or older detached homes
After £7,500 grant (illustrative)
Price on quote
Outdoor unit (HxWxD)
1520x1200x430mm
Weight
161kg

Specifications from the makers' datasheets and the MCS product directory, checked October 2026; prices are indicative. Running costs: Estimate for 10,000 kWh of heat a year at 26.32p per kWh (Ofgem price cap, October to December 2026), at a 45°C design flow temperature: the midpoint of the certified 35°C and 55°C SCOPs. Post-grant figures illustrate the £7,500 Boiler Upgrade Scheme in England and Wales. Confirm current models and exact pricing with your MCS-certified installer.

Pros

  • R290 refrigerant in both the L Series and T-CAP M Series
  • Water flow temperatures up to 75°C for radiator systems
  • T-CAP M Series 12 kW keeps its full 12 kW output at -7°C outdoor
  • Up to 7-year parts and labour warranty through Panasonic PRO Partner installers
  • Fitted by ScottishPower's installer Plug Me In; British Gas has a Panasonic service deal

Cons

  • The 7-year warranty only applies when a PRO Partner installer registers it
  • T-CAP M Series outdoor units are large and heavy: 1,520 mm tall and 161 kg
  • L Series 9 kW output falls to 7.0 kW at 2°C and -7°C outdoor (35°C flow)
  • No published installed price

Best for

Homeowners who want a mainstream Japanese brand with R290 models, including a T-CAP unit that holds full output in cold weather

Panasonic Aquarea pricing and grants in your region

The hardware is the same everywhere; the support is not. England and Wales use the £7,500 Boiler Upgrade Scheme, Scotland the Home Energy Scotland grant and loan, and Northern Ireland currently has no grant. Each regional guide covers exactly what applies.

Panasonic Aquarea air source heat pump FAQ

How much is a Panasonic Aquarea air source heat pump installed in the UK (2026)?

Panasonic Aquarea does not publish an installed price and no credible third-party figure exists, so we show none. For scale, the median Boiler Upgrade Scheme install cost £12,908 before the grant (DESNZ Boiler Upgrade Scheme median, April to June 2026). In England and Wales the £7,500 Boiler Upgrade Scheme grant comes off whatever your installer quotes (£9,000 for off-gas homes replacing oil or LPG, until 31 March 2027), and 0% VAT applies. Ask for two or three written quotes on the same basis: unit size, cylinder, radiator changes and warranty.

Is a Panasonic Aquarea heat pump eligible for the £7,500 grant?

Yes. Every air-to-water unit on this page qualifies for the Boiler Upgrade Scheme in England and Wales when it is fitted by an MCS-certified installer, who applies for the grant on your behalf so it comes straight off the quote. Off-gas homes replacing oil or LPG heating can claim £9,000 instead, until 31 March 2027. Scotland uses the Home Energy Scotland grant and loan instead; Northern Ireland currently has no equivalent scheme. Grant details accurate as at October 2026.

Is Panasonic Aquarea a good air source heat pump brand?

Panasonic sells its Aquarea air-to-water heat pumps in the UK through trained installers. The current L Series and T-CAP M Series use R290 refrigerant and supply water at up to 75°C, and ScottishPower's installer Plug Me In fits Aquarea for ScottishPower customers. British Gas signed a service and maintenance deal with Panasonic in March 2025. Panasonic Aquarea is best suited to homeowners who want a mainstream japanese brand with r290 models, including a t-cap unit that holds full output in cold weather.

What is the warranty on a Panasonic Aquarea heat pump?

Up to 7 years parts and labour when a Panasonic PRO Partner supplies and installs the system and submits the warranty extension online after commissioning. The 3-year standard term comes from Panasonic's 2017 scheme; no current Panasonic UK page states the base term. Workmanship cover for the installation itself comes separately from your installer. Most extended terms depend on registering the product and annual servicing, so keep your installation paperwork and MCS certificate.

How efficient is a Panasonic Aquarea air source heat pump?

The Aquarea L Series 9kW has an MCS-certified SCOP (seasonal coefficient of performance) of 4.71 at 35°C flow and 3.57 at 55°C, so over a heating season each 1 kWh of electricity delivers about 3.57 to 4.71 kWh of heat, depending on how hot your system runs. At a 45°C design flow and the Ofgem cap rate (26.32p/kWh), 10,000 kWh of heat costs an estimated £635 a year, against roughly £890 for a 90%-efficient gas boiler at the current cap gas rate (7.97p/kWh from 1 October 2026). Estimates, not quotes; heat pump time-of-use tariffs can do better.

How long does a Panasonic Aquarea heat pump last?

With an annual service, heat pumps are generally expected to run well beyond their warranty period (Panasonic Aquarea: 3 years, up to 7 with conditions). Longevity depends on correct sizing (the MCS heat-loss survey), sensible siting and regular servicing. Confirm design life and extended-warranty options for your specific model with your MCS-certified installer.

Panasonic Aquarea vs other brands: which should I pick?

Panasonic Aquarea publishes no installed price, so we do not place it on price. Its R290 L Series and T-CAP M Series reach 75°C flow, the T-CAP 12 kW holds its full output at -7°C, and ScottishPower's installer Plug Me In fits Aquarea for ScottishPower customers. See the side-by-side comparisons below for direct head-to-head specs.

Panasonic Aquarea vs other heat pump brands

Heat pump guides

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