WaterFurnace Evaporator Coil Failure

I'm sure all you have to do is look at the front of the HP cabinet to read at least the model, more information may be helpful. But, if poor service/quality is what you want to advertise, not get help, you are accomplishing you goal. Do you know where your heat pump cabinet is? Is that where the light is? If the light is on the cabinet you likely have something older than the Seriesx 5 or 7. Just my guess.

My Series 5 just passed the NJ rebate program physical inspection, and I reported to the inspector, not a Waterfurnace employee, the unit has worked perfectly. Same was true of the original unit for the first 15 years of its life... Premiere model it was...now Series 5, 4 Ton (so called).

 

I see the posts above are several years old but I'm having the same air coil problem with a 14 year old NDV049 series 5 Water Furnace. The air coil is leaking - pin hole that started about 4 years ago. Topped off with R410a, had to do it again in November and again yesterday. Leak is getting bigger or more pin holes. Main problem is finding a source for a new coil - part number 61P715-41. Found one at a supplier in Michigan, about a 4 hour drive from here. Freight shipping from them is $366.00 so even with high gas prices it's much cheaper for me to drive there. Retired so have more time than money. Like others I expected the Water Service brand to be one of the best choices. Like others I was wrong. I don't want to replace the entire furnace after 14 years, but when I have to I think it's time to take a very serious look at other brands.
Sorry if I posted this in the wrong section. Not new to the forum but it's been a while since I posted anything. Any advice would be appreciated and thank you for letting me ramble on. Mike

 

if you go the replace route, do it this year - 26% federal tax credit will apply. I've had nothing but good things to say about my WF 7 series so YMMV. This thread is quite old and at some point in the not too distant past, coil materials in all heat pumps/air conditioning system brands were changed from copper to aluminum (probably to redue costs). There were a rash of failures assoicated with this "new materaial" at the time. I would hazard to say that most of those problems have been solved. I don't think this was a brand issue but more like a refrigeration industry issue adjusting to a new thing (of course letting the customers do their testing for them).

 

There was a time period around when you bought your system where all HVAC manufacturers, GSHP and ASHP alike, were having failures of their copper coils. Research "formicary corrosion for background. It's thought to be related to chemicals in the air from materials inside the house and tighter houses with less air exchange with the outside. You could have had a coil issue with whatever system you installed at that time, so you cannot discriminate against Waterfurnace for the coil failure, just for how they handled a warranty claim for the failure.

Most manufacturers went to aluminum coils to address the issue. Waterfurnace did so as well, except the 7 Series, which has a copper coil with a coating that's supposed to prevent formicary corrosion.