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I would like to construct a coaxial heat exchanger using copper pipe and possibly copper tubing. My intent is to use the exchanger to recover heat from my AC compressor to heat / pre-heat domestic...

Thanks for the information and advice. It seems simple enough to to plumb a heat trap using 3/4 in copper pipe and a few fittings.

The plumber that installed the unit did not use unions, so I...

Is the heat trap nipple a more effective solution than the loop in your illustration, or are they about the same in stopping heat loss?

My water heater was made by Bradford White and is a 50 gal. electric unit. A label on the top of the unit does indicate that heat traps were installed in the unit at the factory and it appears that...

My heat pump has electric heat strips for emergency and auxiliary heat. My thermostat is designed to call for strip heat if there is more than a 2 degree difference between the set point and the...

My electric billing rate is based on my time of day usage and my monthly peak demand.

My electric meter is an older style that uses dials to indicate power usage. It also has a digital display...

I suspect that my electric water heater, which is located in the basement of my home, is losing heat due to convection or thermo-siphon in the hot water supply line.

I would appreciate some...