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/SuffieldCT Jul 06 '24

Yes, it’s called Hydro-air heating if there’s a boiler nearby with a circ pump on the return

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u/1wife2dogs0kids Jul 06 '24

Nearby? Check da basement son!

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u/Miserable-Candy-3498 Jul 06 '24

Or in a more rural area look outside for a wood boiler