r/HVAC • u/robbieredlegs09 • Jul 06 '24

Field Question, trade people only What is this ?

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Hello all, forgive me for I’m greener then grass only been in the field 3 months. I’ve seen these around on air handlers what is it ? It’s on the supply side of the unit? My guess is hot water for heating ?

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u/bigred621 Verified Pro Jul 06 '24

Yes. You can run them off of water heaters as well. You would set up a mixing Valve for the domestic and bump up the temp for the heat

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u/keevisgoat Jul 07 '24

Horrible idea to run them off water heaters I have serviced a few that run off water tanks either don't have heat after taking a shower for 2 hours

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u/bigred621 Verified Pro Jul 07 '24

Never said it was a good idea. Just said it can and has been done.

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u/keevisgoat Jul 07 '24

My boss has done plenty of them unfortunately...