EcoRenovator - View Single Post - Dxgshpwh (ground source heat pump water heater)

jeff5may · 06-07-15, 10:55 PM

The rumbling or whoosh sounds come from liquid and oil passing through. It's a good thing. When you hear nothing or hissing sounds, it means there is only gas passing through. Not good except at startup.

06-07-15, 10:55 PM	#114
jeff5may Supreme EcoRenovator Join Date: Jan 2010 Location: elizabethtown, ky, USA Posts: 2,428 Thanks: 431 Thanked 619 Times in 517 Posts	The rumbling or whoosh sounds come from liquid and oil passing through. It's a good thing. When you hear nothing or hissing sounds, it means there is only gas passing through. Not good except at startup.