RVOA
Well-known member
I was wondering how much cost difference there is between operating the Fridge/Freezer on Propane v AC
So, I contacted Dometic who came back with the following info "The unit uses approximately 2200-2400 BTU's per hour and 3.8 volts ac per hour. "
Please feel free to tell me if my calculations are wrong:-
Running on LPG
1 Litre of Propane equals 24,170 BTU
If we asume an average of 2300 BTU per hour, it gives 55,200 BTU in a day or 2.28 litres of Propane per day.
I am currently paying ?0.37 per litre so running my fridge/freezer on propane will cost me just ?0.84 per day (or ?5.91 per week).
Running on AC
Now, I dont know how to calculate "volts ac per hour" but I do know my unit uses 660W.
Taking a unit of electricity (which is 1000 watts of power used for 1 hour) at ?0.17 per unit, the calculation is as follows ; ?0.17 x 660 / 1000 = ?0.11 per hour or ?2.69 per day (making ?18.85 per week).
Conclusion
If you are on a site with electric included, enjoy a nice beer in the knowledge that the campground is spending nearly ?20 a week to keep it cold for you.
If you are on a meter, turn the fridge/freezer to LPG NOW !!!!!!
My figures above are in GBP and the price you pay for propane/electric will be different, but you can do your own calculations too
Paul
PS I am now trying to work out the cost of using electric heating v propane so does anyone know what BTU per hour a std furnace uses (and watts for the electric pump).
So, I contacted Dometic who came back with the following info "The unit uses approximately 2200-2400 BTU's per hour and 3.8 volts ac per hour. "
Please feel free to tell me if my calculations are wrong:-
Running on LPG
1 Litre of Propane equals 24,170 BTU
If we asume an average of 2300 BTU per hour, it gives 55,200 BTU in a day or 2.28 litres of Propane per day.
I am currently paying ?0.37 per litre so running my fridge/freezer on propane will cost me just ?0.84 per day (or ?5.91 per week).
Running on AC
Now, I dont know how to calculate "volts ac per hour" but I do know my unit uses 660W.
Taking a unit of electricity (which is 1000 watts of power used for 1 hour) at ?0.17 per unit, the calculation is as follows ; ?0.17 x 660 / 1000 = ?0.11 per hour or ?2.69 per day (making ?18.85 per week).
Conclusion
If you are on a site with electric included, enjoy a nice beer in the knowledge that the campground is spending nearly ?20 a week to keep it cold for you.
If you are on a meter, turn the fridge/freezer to LPG NOW !!!!!!
My figures above are in GBP and the price you pay for propane/electric will be different, but you can do your own calculations too
Paul
PS I am now trying to work out the cost of using electric heating v propane so does anyone know what BTU per hour a std furnace uses (and watts for the electric pump).