After some conflicting info on heat pump efficiency/longevity I ask the experts here:
Claim 1: Running the heat pump at low fan setting (comfort aside) is more efficient as less air needs to be heated cooled. Some observations in servicemode where lower fanspeed equals lower compressor rpm.
Claim 2: Running the heat pump at medium/high fanspeed is better for longevity if heat pump and more efficient as gas temp/pressure is lower in compressor as more air passes through, especially at very low or very high temperatures.
In my TM3 with ptc lower fanspeed draws less power when I measure from wall at steady state temp.
I lean towards claim 1, but I honestly dont understand compressors at more than a basic level. What do the experts say?
Claim 1: Running the heat pump at low fan setting (comfort aside) is more efficient as less air needs to be heated cooled. Some observations in servicemode where lower fanspeed equals lower compressor rpm.
Claim 2: Running the heat pump at medium/high fanspeed is better for longevity if heat pump and more efficient as gas temp/pressure is lower in compressor as more air passes through, especially at very low or very high temperatures.
In my TM3 with ptc lower fanspeed draws less power when I measure from wall at steady state temp.
I lean towards claim 1, but I honestly dont understand compressors at more than a basic level. What do the experts say?