Gdetrailer wrote:





18,000 BTU input at 70% efficiency = 12,600 BTU = approx 2.4 1500 W electric heaters or 3600W.

30,000 BTU input at 70% efficiency = 21,000 BTU = approx 4.04 1500W electric heaters or 6060W.

You ARE typically RVing as a HOBBY, spend tons of money on a completely unnecessary RV which also has a absorbtion fridge which is about 30% efficient, a RV water heater which is barely 20% efficient, spend tons of money moving it with hyper expensive over the top tow vehicle then have the gall to worry about efficiency of the RV furnace?

Now, IF you are going to pay for the electric it WILL cost you much more than propane.. Resistance heat is not and never will be 100% efficient when you take in the WHOLE picture of just how that electric is created, transported and delivered to your plug.

Anyone with a all electric resistance heat home or business can attest to the fact that it uses more energy and costs more to do so..

I was involved in a church congregation which had a building that was solely heated with your 100% efficient resistance heat.. Electric cost was $4K (FOUR THOUSAND A MONTH!) and that was the averaging plan for a yr.. $48000 for the year!!!

Building temp was set back to 58F during non use periods and 68 during use periods..

Eventually after 25 yrs the heating system started having issues and parts became non existent it was decided to retrofit with gas heating system.

Electric bill dropped to less than $1K a month and the new gas bill was only $1K a month..

That IS a considerable savings and the new gas fired heating system paid it's self off in only three yrs.

Personally to me, folks attempting to use only electric to heat a RV at a campground are abusing the campground owners good will and there are many places that recognize that abuse and charge more or may have meters..

Don't be so blasted cheap and ruin the goodwill for others by abusing the system.

CFerguson wrote:

Wow, 5 pages in and only one person has pointed out that not using the furnace just may endanger your water tanks and lines. Sure on some RVs it wont matter, but on many others it certainly does.
Pennywise and pound foolish?

bob2194 wrote:

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bob2194 wrote:

Check out this heater a little pricey, but it is super great heater.
check out this heater

Lynnmor wrote:

1500 watts is about the maximum allowed in an electric heater, all of them will put out the same amount of heat. When choosing the brand or style, you just decide how you want to direct heat. If one is not enough, buy another if you have adequate wiring and power available.