Pump & Dump Water to Air Heat pump Failure

JUGHNE

In the late 80's, early 90's I installed 7 WAHP with pump and dump.

Sad to report that the oldest one has failed. It was a 3 ton Command-Aire installed in 1989. So a 35 year run surprised everyone…..including me.

The owner said that the water coil started leaking. The only other failed part was the blower motor, just recently. All of these had the Cupronickel water coils. All also had the desuperheater for DHW heating. And of course good ol' R-22.

Most dumped into a small stream or pond. One dumped into old well.

Out of the 7 there are still 3 running. I credit this longevity to our Sandhills water supply.

Also to the quality of components of the era.

T-stats were such that you could select HP only or HP with aux heaters. Most would heat enough with HP only. I probably oversized most of them because of that fact.

But they were all loud, you knew when they were running.

EBEBRATT-Ed

If only they could (would) make equipment now that would last that long