I recently got a heat pump system put into my house.
6 indoor units and 2 outdoor.
MXZ-3C30NAHZ2-U1 30,000 BTU outdoor unit connected to:
MXZ-4C36NAHZ-U1 36,000 BTU outdoor unit connected to:
So far it has worked wonderfully for both heating and cooling, but for heating it seems to be drawing a lot more power than initially anticipated. The main question is what is a good way to increase the efficiency of these units?
I have the temperatures set lower than ideal, and I have ceiling fans running to circulate the air.
I went through the Kumo app and have set the crossover temperature set relatively high (running both anywhere below 40 degrees).
Are there any other simple factors to improve efficiency?
Yes I know better insulation would improve but currently that is not an option in 3 areas of the ceiling (roof to rafters to drywall), and not an option in the walls, the attic space was insulated with spray foam insulation last year. Also the windows and doors as far as I can tell are just fine when it comes to air gaps and leakage.
6 indoor units and 2 outdoor.
MXZ-3C30NAHZ2-U1 30,000 BTU outdoor unit connected to:
MSZ-FH18NA2 18,000 BTU Head unit
MSZ-FH12NA 12,000 BTU Head unit
MSZ-FH12NA 12,000 BTU Head unit
MXZ-4C36NAHZ-U1 36,000 BTU outdoor unit connected to:
MSZ-FH09NA 9,000 BTU Head unit (times two)
MSZ-FH06NA 6,000 BTU Head unit (times two)
Through a PAC-MKA51BC 5 port branch box
MSZ-FH06NA 6,000 BTU Head unit (times two)
Through a PAC-MKA51BC 5 port branch box
So far it has worked wonderfully for both heating and cooling, but for heating it seems to be drawing a lot more power than initially anticipated. The main question is what is a good way to increase the efficiency of these units?
I have the temperatures set lower than ideal, and I have ceiling fans running to circulate the air.
I went through the Kumo app and have set the crossover temperature set relatively high (running both anywhere below 40 degrees).
Are there any other simple factors to improve efficiency?
Yes I know better insulation would improve but currently that is not an option in 3 areas of the ceiling (roof to rafters to drywall), and not an option in the walls, the attic space was insulated with spray foam insulation last year. Also the windows and doors as far as I can tell are just fine when it comes to air gaps and leakage.
source https://hvac-talk.com/vbb/showthread.php?2224068-Mitsubishi-Heat-Pump-questions&goto=newpost
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