The Mitsubishi Ecodan PUZ-WZ100VAA is a 10 kW R290 monobloc air source heat pump — single-phase, ultra-quiet, and built on Mitsubishi's next-generation natural refrigerant platform. With a GWP of just 3 and the ability to deliver flow temperatures up to 75°C, it's the most future-proof choice for UK properties ahead of evolving F-Gas regulation. This listing is the outdoor unit only; pair it with a Mitsubishi FTC7 pre-plumbed cylinder or standalone FTC7 Master Controller for a complete system — see our matching Ecodan R290 package listings.
SCOP 4.30
35°C seasonal efficiency
75°C
Max flow temperature
-25°C
Guaranteed operation
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.
R290 outdoor unit siting
R290 is an A3 flammable refrigerant. UK installation requires the outdoor unit to maintain minimum clearances from openings (doors, windows), drains and ignition sources per Mitsubishi's technical manual — protective zones were revised in February 2026, so always check the current installation manual rather than an older cached PDF. Most domestic gardens accommodate the unit comfortably — constrained or balcony installations need design review before ordering.
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 10 kW Ecodan R290 typically suits: Larger 4 to 5 bedroom properties with moderate insulation. Sizing should always follow a calculated heat loss assessment — Quality Heating offers free heat loss calculations.
Key features
R290 refrigerant — GWP 3
Propane refrigerant with a Global Warming Potential of just 3 — close to one-thousand times lower than legacy split heat pump refrigerants. The most future-proof choice ahead of tightening UK F-Gas regulation.
Flow temperatures up to 75°C
Reaches flow temperatures up to 75°C — excellent for radiator-only retrofits where you want to avoid replacing emitters, and ideal for high-temperature DHW production.
Guaranteed operation to -25°C
Application range guaranteed down to -25°C ambient — dependable heat delivery through the coldest UK winter conditions, particularly valuable in northern UK and Scotland.
A+++ heating efficiency
Rated A+++ for 35°C flow operation — strong seasonal efficiency (SCOP) translating into lower running costs across the heating season.
Ultra-quiet operation
Reinforced soundproof structure and ultra-quiet design deliver lower sound levels than equivalent R32 models — comfortable for boundary-sensitive sites.
Sealed monobloc — no on-site F-Gas
Refrigerant circuit fully sealed at the factory. The installer connects water pipes only — no on-site refrigerant handling required.
MELCloud enabled
Built-in MELCloud connectivity for remote control, monitoring, maintenance and technical support — no separate Wi-Fi module required to get started.
Zero carbon ready
Fully electric source of heating and hot water — compatible with on-site renewable generation and energy storage for a genuinely zero-carbon-ready installation.
Technical specification
| Model code |
PUZ-WZ100VAA |
| Mitsubishi part number |
711740 |
| Rated heating output |
10 kW |
| Refrigerant |
R290 (GWP 3) |
| Heating capacity (A7/W35) |
10.0 kW, COP 5.10 |
| SCOP — 35°C flow (A+++) |
4.30 |
| SCOP — 55°C flow |
3.35 |
| Maximum water outlet temperature |
75°C |
| Guaranteed operating range |
-25°C to +46°C ambient |
| Electrical supply |
1-phase, 220-240V, 50Hz |
| Sound pressure level at 1m |
54 dB(A) |
| Compatible control platform |
Mitsubishi FTC7 |
| Smart connectivity |
MELCloud enabled (built in) |
| 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 R290 outdoor monobloc unit (PUZ-WZ100VAA)
- 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
- MELCloud Wi-Fi interface, if full smartphone app access is required beyond built-in connectivity
- 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's the difference between R32 and R290 Ecodan models?
R32 has a lower GWP than older R410A refrigerants and runs efficiently in mainstream UK temperatures. R290 (propane) has near-zero GWP and reaches higher flow temperatures with better cold-weather performance, but installation siting rules are stricter due to flammability. Both are excellent — R32 is the all-rounder, R290 is the futureproof choice.
Can I run this Ecodan with my existing radiators?
In most cases yes — R290's 75°C flow temperature capability means radiators sized for a gas boiler will usually deliver enough output without uprating. A heat loss survey identifies any coldest-rooms exceptions.
Is the outdoor unit noisy?
This 10 kW model has a sound pressure level of 54 dB(A) at 1 metre, with a night mode available to reduce this further. 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 R290 package listing for a complete pre-engineered system.
Are there special planning rules for R290?
Most domestic installs are still permitted development if the outdoor unit meets MCS 020 noise criteria and standard distance-to-boundary rules. R290 siting rules add minimum clearances to openings, drains and ignition sources — typically straightforward in domestic gardens, but always check the current installation manual as protective zones can be revised.
