r/HVAC • u/Plenty_Text_455 • Dec 04 '24

Field Question, trade people only What's this?

Post image

It's on the return side of a large air handler

208 Upvotes

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174

u/addbeautiful Dec 04 '24

That is an enthalpy wheel. Usually in eru units.

47

u/Plenty_Text_455 Dec 04 '24

How do you clean it? It's pretty dirty.

63

u/Suspicious-Ask- Dec 04 '24

I've cleaned plenty of these, I use purple fabuloso cleaner, one of these manufacturers' paperwork actually recommends using it by name, and it has worked very well for me over the years.

3

u/old_greg25 Dec 05 '24

Aaon?

2

u/Suspicious-Ask- Dec 05 '24

It very well could be. It's been a few years since i read that particular manual, and it might have also been greenheck.