Refrigerator on propane or electric?

4.4 lbs per gallon. A 20 pound pot is filled to 85%. Better refactor your calculations. Check OPD valve data. Four gallons and small change for fourteen dollars. I've never encountered an RV refrigerator that cooled as good on electricity any electricity than it did on LPG. I even tried tweaking my regulator to 13" water column which helped a little on gas. Electricity cooled new Nor-cools to the low 60's while gas minimums were high forties, low fifties.

Drilling out burner orifices was a waste of time. Overheated the burner chamber.

dougrainer wrote:

What IS the cost of LP that they deliver? They do NOT deliver a cheaper price LP than if you purchase at their store location. Now, if you have a motorhome, then having them fill at your site is going to be cheaper than going to them. Doug

Twenty pound bottles ARE $14 delivered or $12 PICKED UP. I DON'T worry about the extra $2.

pianotuna wrote:
Well if you don't want to "pay the park" you could always add a solar system. It is the nearest thing to a free lunch that one can find.

The investment in solar large enough to run my air conditioner twenty hours a day would be pretty large. More than I want to make.

Well if you don't want to "pay the park" you could always add a solar system. It is the nearest thing to a free lunch that one can find.

TomG2 wrote:
All of this is in 95 degree weather.

Assuming this is a 30 amp RV running the air conditioner all day... I would definitely have the fridge and water on propane only.

DrewE wrote:

TomG2 wrote:

pianotuna wrote:
1 Gallon of Propane = 27 kWh (Kilowatt Hours) of electricity.
.....snip.....

So, if I pay less than $4.19/gallon (27 X $0.155/kwh) for propane, I am coming out ahead? Again, I know that I will not be saving hundreds of dollars, just not giving it to the park for electricity.

You do have to know the relative efficiency of the fridge on electric vs. propane. I would guess that somewhat more heat is lost from the propane (i.e. not transferred to the ammonia in the cooling system) than with electric, though I don't know that absolutely.

Otherwise, the math is correct. If you're actually paying, say, $2.19 a gallon for propane, then propane would undoubtedly be cheaper in your case. Your savings in that case could amount to almost $.50 per day.

The BTU of LP and 120 is so close as you cannot really measure it. Now, one thing that RV refers have a problem with in hot weather is the LINE voltage at some Campgrounds. The lower the line voltage from 120 volts the less the refer will cool correctly on 120 volts. If the line voltage drops below 115 volts, I would advise to switch to LP until the line voltage rises. Doug

TomG2 wrote:
I can do the math and I am as lazy as the next guy, but I don't like paying the park $0.155/kwh for electricity. Besides, the propane guy delivers right to the door. I have to purchase propane anyway since that is all my water heater uses. Sounds like I better get a more accurate reading on the electrical usage.

What IS the cost of LP that they deliver? They do NOT deliver a cheaper price LP than if you purchase at their store location. Now, if you have a motorhome, then having them fill at your site is going to be cheaper than going to them. Doug

TomG2 wrote:

pianotuna wrote:
1 Gallon of Propane = 27 kWh (Kilowatt Hours) of electricity.
.....snip.....

So, if I pay less than $4.19/gallon (27 X $0.155/kwh) for propane, I am coming out ahead? Again, I know that I will not be saving hundreds of dollars, just not giving it to the park for electricity.

You do have to know the relative efficiency of the fridge on electric vs. propane. I would guess that somewhat more heat is lost from the propane (i.e. not transferred to the ammonia in the cooling system) than with electric, though I don't know that absolutely.

Otherwise, the math is correct. If you're actually paying, say, $2.19 a gallon for propane, then propane would undoubtedly be cheaper in your case. Your savings in that case could amount to almost $.50 per day.

pianotuna wrote:
1 Gallon of Propane = 27 kWh (Kilowatt Hours) of electricity.
.....snip.....

So, if I pay less than $4.19/gallon (27 X $0.155/kwh) for propane, I am coming out ahead? Again, I know that I will not be saving hundreds of dollars, just not giving it to the park for electricity.

I can do the math and I am as lazy as the next guy, but I don't like paying the park $0.155/kwh for electricity. Besides, the propane guy delivers right to the door. I have to purchase propane anyway since that is all my water heater uses. Sounds like I better get a more accurate reading on the electrical usage.