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BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22120
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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Just got a new A/C heat pump with 20 kw heat strips. Problem

Customer Question

Just got a new A/C heat pump with 20 kw heat strips. Problem is 2 strips
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: each requires a 100 amp circuit of its own. I've got a 200 amp panel, with a 100 amp subpanel. The a/c works out of the subpanel. Meaning that I can only connect 1 strip. Is this right.
JA: Do you plan on doing the work yourself?
Customer: Yes I also have a retaired A/c man that is going to work with me. He hasn't seen the setup as yet.
JA: Anything else we should know to help you best?
Customer: Not that I can think of.
Submitted: 4 months ago.
Category: HVAC
Expert:  BillyHvac replied 4 months ago.

that sounds like too many watts of heat unless you have a 3,000+ sq ft home

Customer: replied 4 months ago.
2200 sq ft.
Expert:  BillyHvac replied 4 months ago.

Thank you and what is region climate?

You surely are oversized on the electrical strip which is only for back up heat..

Customer: replied 4 months ago.
The pump is a 5 ton unit, so I take it that only one strip is needed. we live in central nTenn
Expert:  BillyHvac replied 4 months ago.

and also keep in mind that the electric is back up for when heat pump fails or falls behind....so the 2 do not run at the same time in emergency heat.

20,000 watts = 68,242 btu's.

If in temperate to mild climate you only need 30 btu per sq ft.

2200 x 30 = 66,000 btu.

So with (1) 20kw you have plenty to heat whole house if needed.

I would only only use (1) strip.

Billy

Customer: replied 4 months ago.
Thank you very much takes a load off of my mind. Till next time thank you again. Good by.
Expert:  BillyHvac replied 4 months ago.

you are very welcome.

Just rate service to close question and have a great weekend

Billy

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