The Mitsubishi Ecodan PUZ-WM60VAA is a 6 kW R32 monobloc air source heat pump — single-phase, factory sealed, and built for UK residential retrofit and new-build properties. As a true monobloc, the refrigerant circuit is fully sealed within the outdoor unit, meaning the installer only needs to connect water pipes indoors — no F-Gas certification is required for the system tie-in. This listing is the outdoor unit only (Mitsubishi part number 497782); pair it with a Mitsubishi FTC7 pre-plumbed cylinder or the standalone FTC7 Master Controller for a complete system.
SCOP 4.76
35°C seasonal efficiency
45 dB(A)
Sound pressure at 1m
-20 to +35°C
Operating range
BUS grant eligible
Eligible for the UK Boiler Upgrade Scheme grant when installed by an MCS-certified installer in an eligible property. The grant is paid directly to your installer and discounted from your quote.
MCS-certified installer required
To claim the BUS grant and validate full Mitsubishi manufacturer warranty, this heat pump must be installed and commissioned by an MCS-certified heat pump installer. Quality Heating can connect you with our trade network if you don't yet have one specified.
Property fit
The 6 kW Ecodan typically suits: Typical 2 to 3 bedroom UK homes with average insulation. Sizing should always follow a calculated heat loss assessment — Quality Heating offers free heat loss calculations.
Key features
R32 refrigerant
Lower GWP than legacy R410A units, with a sealed factory-charged circuit — no on-site F-Gas brazing required at install.
True monobloc
All refrigerant work happens inside the outdoor unit at the factory. The installer only connects water pipes indoors, reducing install time and risk.
Connect & Notify
Classified for simplified grid connection under the UK's Connect & Notify scheme — the installer can notify the DNO after commissioning rather than waiting for prior approval, speeding up the install timeline.
MELCloud Wi-Fi and energy monitoring as standard
Built-in MELCloud connectivity for remote control, monitoring, maintenance and technical support — with energy monitoring included as standard, no extra hardware needed to see consumption data.
Hybrid function
Supports hybrid configuration alongside a conventional boiler — useful where a phased transition away from fossil fuel heating is preferred, or as backup for very cold conditions.
Multiple unit cascade function
Cascades with additional units of the same output for larger commercial and multi-dwelling projects needing more capacity than a single outdoor unit provides.
Optimised low ambient defrost control
Defrost cycles are optimised to minimise disruption to heating output and DHW recovery during cold, high-humidity conditions typical of UK winters.
UK manufacturer warranty
Backed by Mitsubishi's UK warranty when commissioned by a Mitsubishi-approved engineer. Warranty registration documentation is supplied in the box.
Technical specification
| Model code |
PUZ-WM60VAA |
| Mitsubishi part number / SKU |
497782 |
| Chassis |
Standard |
| Rated heating output |
6 kW |
| Refrigerant |
R32 (GWP 675) |
| Refrigerant charge / CO2 equivalent |
2.2 kg / 1.49 t |
| ErP rating — 35°C flow (space heater) |
A+++, 190%, SCOP 4.76 |
| ErP rating — 55°C flow (space heater) |
A++, 142%, SCOP 3.56 |
| ErP rating — DHW (combination heater, large profile) |
A+, 145%, 6.0 kW |
| Sound pressure level at 1m |
45 dB(A) |
| Sound power level |
58 dB(A) |
| Water pipework size |
22 mm |
| Water flow rate |
17 L/min |
| Water pressure drop |
8.0 kPa |
| Dimensions (W × D × H) |
1050 × 480 × 1020 mm |
| Weight |
98 kg |
| Electrical supply |
220-240V, 50Hz, single phase |
| Nominal running current [max] |
[13] A |
| Fuse rating (MCB size) |
16 A |
| Operating ambient temperature range |
-20 to +35°C |
| Compatible control platform |
Mitsubishi FTC7 |
| Smart connectivity |
MELCloud enabled (built in), energy monitoring as standard |
| BMS integration |
Modbus RTU via ACC-BEMS-A1MR5 interface (sold separately) |
| Refrigerant connection |
Sealed factory charge — monobloc, no on-site brazing |
| Outdoor mounting |
Floor stand or wall bracket (sold separately) |
| BUS grant eligibility |
Yes, when MCS-installed |
What's in the box
- Mitsubishi Ecodan R32 outdoor monobloc unit (PUZ-WM60VAA)
- Manufacturer installation and commissioning documentation
- Mitsubishi UK warranty registration card
What you'll also need (sold separately)
- FTC7 indoor controller (PAC-IF082B-E) or a pre-plumbed FTC7 cylinder
- Outdoor unit wall bracket or floor stand
- Anti-freeze valves on primary flow and return
- Magnetic system filter on the primary return
- Insulated flexible primary hoses and isolation valves
Frequently Asked Questions
Do I need to be MCS-registered to install this heat pump?
The Ecodan can technically be installed by any competent heating engineer, but to claim the UK Boiler Upgrade Scheme grant the install must be carried out by an MCS-certified installer. Quality Heating can put you in touch with our trade partners if you need a registered installer.
What does "Connect & Notify" mean for my installation timeline?
This model is classified under the UK's Connect & Notify scheme — your installer can connect the system and notify the district network operator (DNO) afterwards, rather than waiting for prior grid approval. This can meaningfully speed up your installation schedule versus units requiring full prior DNO application.
Can I run this Ecodan with my existing radiators?
In most cases yes, but radiators sized for an 80°C gas boiler may need uprating because heat pumps run at lower flow temperatures. A heat loss survey will identify which — if any — rooms need radiator upgrades.
Is the outdoor unit noisy?
This 6 kW model has a sound pressure level of 45 dB(A) at 1 metre and a sound power level of 58 dB(A). Most installs comfortably meet MCS 020 planning noise limits at a 1 m boundary — but siting matters. We can advise on positioning.
Does this include the indoor cylinder?
No — this listing is for the outdoor unit only. You'll need either a Mitsubishi FTC7 pre-plumbed cylinder, or a third-party cylinder with the FTC7 Master Controller (PAC-IF082B-E). See our matching kW + cylinder package listing for a complete pre-engineered system.
