buckeyefarmer
Epic Contributor
Back up heat for a geothermal?
Modern air to air efficiency makes a closed loop an even harder choice to justify.
In my training they recommended backup. My 2 ton unit uses backup when outside temps get in the teens. My 3 ton unit never even got the backup connected, isn’t needed.
I like not having an outdoor unit. Geothermal is quiet.
But I agree, the advances in air to air makes cost hard to justify unless you self install.