Mitsubishi Electric MSZ-AY vs Panasonic Etherea Z
A side-by-side look at the Mitsubishi Electric MSZ-AY and Panasonic Etherea Z. Winning figures are highlighted.
| Mitsubishi Electric Mitsubishi Electric MSZ-AY | Panasonic Panasonic Etherea Z | |
|---|---|---|
| Price from | — | — |
| Cooling capacity | 3.5 kW | 3.5 kW |
| Heating capacity | 4 kW | 4.5 kW |
| Efficiency (SEER) | 8.7 | 8.5 |
| Efficiency (SCOP) | 4.7 | 5.1 |
| Indoor noise | 19 dB | 19 dB |
| Outdoor noise | 49 dB | 48 dB |
| Refrigerant | R32 | R32 |
| Wi-Fi control | Yes | Yes |
| Warranty | 5 yrs | 5 yrs |
Best value per row highlighted. Prices last checked 21 July 2026.
Mitsubishi Electric MSZ-AY
The MSZ-AY replaced the long-serving MSZ-AP as Mitsubishi's core wall split and is a dependable all-rounder with A+++ cooling and A++ heating. Built-in Wi-Fi and Plasma Quad filtration are welcome at this price. As a heat pump it heats a room efficiently, though its SCOP trails the premium Kirigamine and Daikin Perfera.
Full Mitsubishi Electric MSZ-AY review →Panasonic Etherea Z
The Etherea Z is Panasonic's premium wall split, pairing A+++ ratings in both modes with the nanoe X air purifier that runs even when you are not cooling. Its high SCOP makes it a strong air-to-air heat pump, comfortably heating a room through a UK winter at low cost. A refined, quiet and well-rounded alternative to the Daikin Perfera.
Full Panasonic Etherea Z review →