DIYbanter - View Single Post

wrote:
The additional insulation will make a difference. Use sheets of
fiberglass or blown in biberglass and cover the joists completely. The
more the merrier. Also, fix any air leaks. Insulate the hot water
pipes and you should be able to turn down the setting on your hit water
heater. The walls should be the last thing you try to insulate.

Even the Energy Star house survey guy recommended against insulating the
water heater. That was a good idea back before we had the good
insulation we do now days. Around here (Chelmsford,MA) waterheaters
only last about 6 years because of the minerals. So I'd have to buy a
new waterheater blanket with every replacement. The heat loss won't pay
for it.