ᐅ Experiences with split air conditioning units in defrost mode?
Created on: 3 Sep 2025 12:53
K
KlimaRolle
Hello,
I have an open-plan living and dining area on two levels with about a 1m (3 ft) height difference. In the living room, there is a gas tile stove that does not shut off when a certain temperature is reached. For the past three years, we have used a Fujitsu air conditioner to heat both rooms. A curtain separates the stairwell/hallway, so we are heating a space of about 40m² (430 sq ft) or approximately 100m³ (3,530 cu ft).
The problem is that the Fujitsu frequently defrosts (on one rather unfavorable day, it defrosted 16 times within 14 hours!). During defrosting, cold air flows into the room, which is uncomfortable.
I have looked into this and would like to replace the Fujitsu with another brand or model. Mitsubishi, Panasonic, or Daikin have been recommended by a technician. No air conditioning unit can defy the laws of physics, but there are ways to minimize or work around this issue. It is important to me that NO cold air enters the room during the defrost mode. From what I have seen from the AkkuDoktor, Panasonic units also blow warm air into the room during defrost mode (of course, not comparable to normal heating operation, but the room does not cool down).
I have deliberately not mentioned specific models because I am seeking unbiased user experiences. In the worst case, a model with an integrated electric heating element might be an option (I know this reduces efficiency, but comfort is more important in that case).
I have already tried many things (fan heater, radiator, infrared panel in front of the sofa), but all were only suboptimal.
I have an open-plan living and dining area on two levels with about a 1m (3 ft) height difference. In the living room, there is a gas tile stove that does not shut off when a certain temperature is reached. For the past three years, we have used a Fujitsu air conditioner to heat both rooms. A curtain separates the stairwell/hallway, so we are heating a space of about 40m² (430 sq ft) or approximately 100m³ (3,530 cu ft).
The problem is that the Fujitsu frequently defrosts (on one rather unfavorable day, it defrosted 16 times within 14 hours!). During defrosting, cold air flows into the room, which is uncomfortable.
I have looked into this and would like to replace the Fujitsu with another brand or model. Mitsubishi, Panasonic, or Daikin have been recommended by a technician. No air conditioning unit can defy the laws of physics, but there are ways to minimize or work around this issue. It is important to me that NO cold air enters the room during the defrost mode. From what I have seen from the AkkuDoktor, Panasonic units also blow warm air into the room during defrost mode (of course, not comparable to normal heating operation, but the room does not cool down).
I have deliberately not mentioned specific models because I am seeking unbiased user experiences. In the worst case, a model with an integrated electric heating element might be an option (I know this reduces efficiency, but comfort is more important in that case).
I have already tried many things (fan heater, radiator, infrared panel in front of the sofa), but all were only suboptimal.
K
KlimaRolle3 Sep 2025 20:03So no improvement in the defrosting performance either. Now I am hoping for clear statements about models that manage this better.