Mitsubishi ElectricEHWT17D-MHEDW
The Mitsubishi Electric EHWT17D-MHEDW is a heat pump with SCOP (35 °C) 6.87 and refrigerant R32.1
Key figures
Rules in Ireland
SEAI Heat Pump System Grant
Check conditions€14,5002Maximum for a house, incl. €2,000 boiler scrappage
Up to €14,500 for a house (€11,500 for an apartment), including a €2,000 boiler scrappage grant when an oil, gas, solid-fuel or storage-heater system is removed. Homes built before 2007 need a technical assessment (€200 grant) unless the BER shows a Heat Loss Indicator of 2.3 or less. Installation is charged at 9% VAT.3
- The heat pump must be listed on SEAI's Home Appliance Register of Performance (HARP) and installed by an SEAI-registered contractor.
- Home built and occupied before 2021, with an MPRN; grant approval before any work starts and a BER assessment afterwards.
Technical specifications
| General | |
|---|---|
| Type (source) | Water-to-water1 |
| Performance | |
| Rated output 35 °C | 7 kW1 |
| Rated output 55 °C | 7 kW1 |
| Efficiency | |
| SCOP (35 °C) | 6.871 |
| SCOP (55 °C) | 4.691 |
| Seasonal efficiency ηs 35 °C | 267 %1 |
| Seasonal efficiency ηs 55 °C | 180 %1 |
| Energy label 35 °C | A, , , 1 |
| Energy label 55 °C | A, , , 1 |
| Noise | |
| Indoor unit sound power | 38 dB(A)1 |
| Refrigerant | |
| Refrigerant | R321 |
| Refrigerant GWP | 6751 |
| Refrigerant charge | 0.9 kg1 |
Frequently asked questions
What is the SCOP (35 °C) of the Mitsubishi Electric EHWT17D-MHEDW?
The SCOP (35 °C) of the Mitsubishi Electric EHWT17D-MHEDW is 6.87.1
Which refrigerant does the Mitsubishi Electric EHWT17D-MHEDW use?
The refrigerant of the Mitsubishi Electric EHWT17D-MHEDW is R32.1
How much SEAI grant can you get for the Mitsubishi Electric EHWT17D-MHEDW?
Up to €14,500 with the SEAI Heat Pump System Grant, including €2,000 boiler scrappage when an oil, gas, solid-fuel or storage-heater system is removed (€11,500 for an apartment). The home must be built and occupied before 2021, the heat pump must be on SEAI's HARP register and you need grant approval before work starts.1
Sources
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
- Heat Pump System Grants — SEAI · accessed 4 Oct 2026
- Heat pump heating system (VAT) — Revenue · accessed 4 Oct 2026