which is the difference between having one pump on each side in the hvac or having one in the left? [closed]
I have a doubt in the difference of having one pump on each side in the hvac or having only one in the left. I also don't know the difference betwen pumps with variable speed and pumps with constant speed.
Closed for the following reason "duplicate question" by Aaron Boranian 2023-04-25 10:32:43 -0500
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Duplicate of this post.