No one answers the golden question on any hvac videos about multi speed ac. How do you size variable speed in contrast to single stage? You mention 88 degrees as your baseline with a single stage and yet never mention any baseline temp for sizing multi speed units. My theory would be to base the avarage daily summer temp on the sweet spot of the particular unit. Then if you were to get 100+ degree days the system would ramp up and be able to adequately cool the house. The problem is i dont see anything from the manufacturers on this subject unlike furnaces the have multispeed they actually put out tge btu of the various stages not so with ac. So how are you guys sizing these multispeed/variable speed units in contrast to single speed?
Units are sized based on the cooling load calculation of the home. This video should help: indoortemp.com/resources/right-size-air-conditioner-manual-j-load-calculator, this also might help:indoortemp.com/resources/what-is-cooling-limit-of-air-conditioner
A dual zone climate control is a zoning system and a ductwork and airflow related subject. If you have a zoning system, a multi stage unit is recommended
The air handler has a variable speed blower motor also know as an ecm motor some condensers have ecm motors also, typically when you have two stage cooling. Depending on the temperature at the thermostat and what the differential is of what temperature your calling for the unit will either slow down or rev up to get you there more efficiently
I'm learning diy hvac. Fascinating. Very informative. Thanks for sharing. Much Blessings to you. 🙏 Lord-Jesus-Christ ✝c✝o✝m
Thank you! You too!
No one answers the golden question on any hvac videos about multi speed ac. How do you size variable speed in contrast to single stage? You mention 88 degrees as your baseline with a single stage and yet never mention any baseline temp for sizing multi speed units. My theory would be to base the avarage daily summer temp on the sweet spot of the particular unit. Then if you were to get 100+ degree days the system would ramp up and be able to adequately cool the house. The problem is i dont see anything from the manufacturers on this subject unlike furnaces the have multispeed they actually put out tge btu of the various stages not so with ac. So how are you guys sizing these multispeed/variable speed units in contrast to single speed?
Units are sized based on the cooling load calculation of the home. This video should help: indoortemp.com/resources/right-size-air-conditioner-manual-j-load-calculator, this also might help:indoortemp.com/resources/what-is-cooling-limit-of-air-conditioner
Are they talking about the outside compressor or the air handler??
The outside condenser which has a compressor as one of the parts in it
Can be single stage install for 2 story home with dual zone climate control?
A dual zone climate control is a zoning system and a ductwork and airflow related subject. If you have a zoning system, a multi stage unit is recommended
what controls the variable speed in a AC. The handler or the condenser?
The thermostat
The air handler has a variable speed blower motor also know as an ecm motor some condensers have ecm motors also, typically when you have two stage cooling. Depending on the temperature at the thermostat and what the differential is of what temperature your calling for the unit will either slow down or rev up to get you there more efficiently
What size is a "smaller sq footage home" ? Less than 1500sq ft? less than 1200? Thanks for the video.
1200 or less generally
A 2 stage does not dehumidify better than a single stage. Only benefit of a 2 stage is less power usage.
The 2 stage allows the AC to dehumidify for a longer period of time allowing a more comfortable home
An AC does not replace the need for a dehumidifier in some areas
He's old
And very knowledgeable. Arne has retired since this video and helped build this company to what it is.
@@fireiceheatingandaircondit4363 whow
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