Mod (linen) edit: Split from this topic http://www.troublefreepool.com/heate...ns-t52638.html
I have a 500 gal propane tank which we currently use for tankless hot water heaters as there is no natural gas supply in our area.
Is Propane too expensive to use to heat up the spa in the winter vice NG? It would not be too difficult for me to add the gas heater. Currently we have a pool/spa heat pump...which will not heat up anything once the temp gets to 50 and below. We would like to use a hot spa in mid winter every now and then.