Thor Forums

[Chance]

Originally Posted by Beau388

It seems you are confusing SEER (seasonal) with EER energy efficiency. SEERs are usually around 14 for the small units (1.5-2.0 tons) but the EERs are about 11. The 1.5 ton split units weight about 160 lbs. Roof top RV units weight 86-90 lbs and have an EER of 8.8 to 11. The 4 ton split units weigh 430 lbs and require 30 amps at 240 volts and have a SEER of 18 and an EER of 11.

Im not sure why you think I'm confused. An EER of 11 is horrendous for a residential unit. My home A/C which is almost 15 years old is between 14 and 16. New A/Cs I've looked at for future replacement are much higher; although the cost goes up significantly as they are made more efficient. Deciding where to draw the line on cost versus benefit is tough.


Getting back to RVs, as mentioned by others above, if you are buying new, I would highly recommend going with a 50-Amp service on larger motorhomes and trailers. But the question that was brought up that led to this thread is what can be done with an existing RV that has a 30-Amp and or 4,000-Watt generator if the 15,000 BTU/hr A/C isn't quite enough capacity.