Water pressure tank insulation?

Question

We moved into a house without a basement and the water pressure tank is under the house. How can we keep it insulated so it doesn't freeze. The guy before us had some makeshift insulation(whatever he could find) and then kept a light bulb on....there must be another way.

Answer 1

Ive got a well head out away from the house, and the bladder tank is right there with it. I ran a line of heat tape along the exposed above ground water line, and even wrapped it once around the bladder tank. Then, I built a small 2x6 frame, just an open sided box really... and attached some batt insulation to the frame. Then dropped an open floor metal shed over the whole thing to protect it from the weather.

Since yours is under your home, you might consider the following...
Heat tape/pipe insulation wrap on any exposed pipes.
Water heater insulating blanket - you can find these in various sizes... while they are made to go around a water heater, you can easily use them for the bladder tank.
Or, you can use batten insulation wrapped around the bladder tank... the nice thing about the water heater blanket, is that they are lined on both sides, but you could accomplish the same thing by using plastic sheeting, for example.

On the really cold nights when you are afraid the pipe may freeze, you can also leave a tap running at just a trickle too.... this makes it harder for the pipe to freeze.

Have Fun

Answer 2

I'm not understanding you. The hot water tank should be insulated and heated if outdoors. So should a above ground well pump. But if you are talking about an expansion tank, you really only need it insulated where it meets other appliances that actually hold water.