Replace oil-fired hot water heater with propane-fired tankless in vacation house?
My oil-fired conventional oil-fired tank hot water heater in a vacation house needs to be replaced. My options are
1. Simply replace it.
2. Run a propane line from an existing propane tank outside and replace the heater with a propane-fired tankless one.
LEAVING ASIDE THE RELATIVE COSTS OF PROPANE AND OIL (which can change from time to time and which seems to me to be generally a wash, given energy content, fuel price, and efficiency), my question is whether the amount of energy lost from leaving a 50-gallon tank heater running and unused when I'm not here is worth the cost of running a propane line ($$$$) and installing a more-expensive tankless heater (I estimate >$$$$ more expensive for the heater).
Most of the year, I only use the house on weekends, so I would estimate that for about 40 weeks, the hot water gets no use during the week. (I know I can shut the heater off when I'm not here, but occasionally guests or a cleaning person comes, and I like to have the hot water on for them.) So, again, the question is, how much energy is lost just from keeping a tank of hot water for 5 days without use.
(For what it's worth, the house is on Long Island, NY, and I keep it at 50 degrees during the off-season when I'm not here.)
Last edited by jpsmith1cm; 12-31-2012 at 05:09 PM.
Pricing issues aren't permitted here.
I've edited your post.
i would install a electric water heater and wrap it with a blanket
WAG. You use between 80 and 100 gallons of oil a year to keep the water hot when your not there.
An electric water heater usually has less standby losses due to the fact it does not have an exhaust stack running through it.
Originally Posted by catmanacman
Cheap, reliable, easy to install, I think I would do the same
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