On Sat, 18 Oct 2014 13:56:45 -0700, Jeff Liebermann
wrote:


An easy way to tell if your water heater is a piece of junk is to
measure the case temperature of the water heater. Use a contact
thermometer (Thermocouple or thermistor, not optical IR). It's
probably the worst at the top of the heater. If the outer case is
warmer than the ambient air, you're wasting energy heating that
atmosphere instead of the water. Same with a refrigerator. If the
case of the fridge is colder than ambient, you're cooling the kitchen.

No. Refrigerators always heat the kitchen, they have condensers as well
and ALL the heat removed from the interior and the operating losses are
added to the room heat.

?-)