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Old 02-17-17, 10:03 AM   #17
Plantman
Lurking Renovator
 
Join Date: Feb 2012
Location: Angola, IN
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I have a single stage HP with a 2 speed fan. I replaced the well pump several years ago and it was suggested I get a variable speed pump that runs slow when only the HP needs water but speeds up for other household uses. I can turn on all my water with the heat on, including a commercial greenhouse, and the pressure remains constant. I have an 8 liter (2.1 gal) pressure tank for my 2.5 ton unit. I believe the well pump is 3-phase. It cost more but I have had now problems for 5 years. I get plenty of heat for my 2400 sq ft house in N Indiana and rarely have my auxilary heat go on.
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