Hot Water Recirculation System? Replace it with a Demand System!

Many residential single family and multi-family homes built in the past have full time hot water recirculation pumps and systems installed.  This no doubt saves a whole lot of water, but it also wastes a tremendous amount of energy.
Hot water recirculation
Recirculating systems were typically used in larger homes, say 3,000 square feet and up.  Long pipes mean long waits, and if you could afford a big house you didn’t want to have to wait forever for the hot water to arrive.
Full time recirculation systems slowly circulate the hot water through the hot water piping keeping the water in the pipes hot for instant use.  Turn on a faucet and within a second or two you have hot water.  It’s a great convenience, but there is a penalty to pay. 
Wasting energy
Your hot water plumbing becomes a giant heat exchanger causing your water heater to fire more often and longer. Not only [...]

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