The Tank › Need Thermostat Controller for A.O. Smith HWT
- January 17, 2011 at 3:25 pm #14971
I have a 50 gal A.O. Smith Subchamber, foam insulated. It is about 20 years old and has always worked fine.
PGCS 50 202
PGCS 50 MOONO100000
Serial # mm88-0014128-202
Water tank works fine except that I have to bump the thermostat to get it to fire up. If I don’t nudge” it, the water temp gets cool. It will light by itself but the water temp drops lower than it should.
My question is, can I buy a thermostat controller for a reasonable price and if so who should I contact?
Or, Should I say 20 years is enough and pop for a new system.
Thanks in advance for your replies, TimJanuary 17, 2011 at 8:37 pm #14973
To give you something to think about a new thermostat will be about 1/5th the cost of a new heater. A 20 year old heater that leaks can exceed the cost of a new heater just in repair damage to your house alone.January 17, 2011 at 9:38 pm #14975
It’s in the basement near a drain so leakage is not a big deal. I would still like to repair the thermostat.January 17, 2011 at 9:50 pm #14976
Take a picture of it and post it here. Also you will need to measure the length of the brass fitting that screws into the tank. Just the brass nipple part.January 18, 2011 at 9:38 am #14987
Will do, it may take a day or so.
Thanks EJJanuary 18, 2011 at 10:45 am #14988
Sorry for the tiny pic. Site only allows so many bytes. The nipple between the controller and the tank seams to be “3/4 npt. I can see about 3/4” length. ODes this help?
ThanksJanuary 18, 2011 at 12:41 pm #14989Randy SchuylerKeymaster
Although it’s my site, I’m not sure how the picture function works, but I’ve seen people post some enormous pictures here. Probably not enormous as kilobytes, but enormous to view. I think you could size this to four or five inches wide but keep the resolution to 72dpi and it would show bigger.
Randy SchuylerJanuary 18, 2011 at 9:18 pm #14993
That a very basic thermostat you can find at lowes. Drain your heater and remove the thermostat to match up. Just match up the nipple length and your good to go.January 18, 2011 at 9:44 pm #14994
Wow, Lowes? That’s way to easy. I will be there tomorrow. I will let you know how it went. Thanks a lot for this information.
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