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MFZ-KW25VG vs MSZ-AY25VGK: floor-standing or wall-mounted heat pump?
| MFZ-KW25VG | MSZ-AY25VGK | |
| Outdoor unit | MUFZ-KW25VGHZ | MUZ-AY25VGH-SC |
| Heating capacity | 3.4 kW (0.2–5.1) | 3.2 kW |
| Cooling capacity | 2.5 kW (0.7–3.6) | 2.5 kW |
| SCOP | 4.1 | 4.7 |
| SEER | 8.5 | 8.7 |
| Energy class, heating | To be confirmed | A++ |
| Energy class, cooling | To be confirmed | A+++ |
| Indoor unit noise | 18 / 41 dB(A) | 18 / 45 dB(A) |
| Outdoor unit noise | 46 / 47 dB(A) | 48 / 47 dB(A) |
| Heats down to (manufacturer data) | -25 °C | -25 °C |
| Refrigerant | R32 | R32 |
| Max. pipe length | 20 m | 20 m |
| Indoor unit weight | 15 kg | 10.5 kg |
The advantage of a floor unit is that warm air is supplied where it is needed most, so heating comfort near the floor is better. The MFZ-KW set has a nominal heating output of 3.4 kW and a maximum of 5.1 kW; according to manufacturer data it heats down to −25 °C. Indoor sound is 18–41 dB(A), very quiet at minimum speed.
The MSZ-AY wall unit takes up less space and is more efficient seasonally. If the room has free wall space up high and efficiency is the priority – the AY. If warmth near the floor matters most or wall mounting is impossible – the MFZ-KW.
| Parameter | MFZ-KW25VG | MSZ-AY25VGK |
|---|---|---|
| Nominal cooling capacity | 2.5 kW | 2.5 kW |
| Nominal heating capacity | 3.4 kW | 3.2 kW |
| Maximum heating capacity | 5.1 kW | On request |
| SCOP | 4.1 | 4.7 |
| SEER | 8.5 | 8.7 |
| Energy class (heating / cooling) | On request | A++ / A+++ |
| Indoor unit sound level | 18–41 dB(A) | 18–45 dB(A) |
| Outdoor unit sound level | 46 / 47 dB(A) | 48 / 47 dB(A) |
| Heating down to (manufacturer data) | −25 °C | −25 °C |
| Pipe length (per unit, up to) | 20 m | 20 m |
| Refrigerant | R32 | R32 |
Seasonal ratings, outdoor sound level and refrigerant refer to the outdoor unit of the set: MFZ-KW25VG + MUFZ-KW25VGHZ, MSZ-AY25VGK + MUZ-AY25VGH-SC.
Data taken from our catalogue (manufacturer technical data). The specific model for your room is selected and confirmed by an EKO2ŠILUMA specialist after assessing heating and cooling demand and installation conditions.