Quote:
Originally Posted by Grumpy
You can buy a lot of propane for $800 plus install. Get a couple electric heaters, they work great and add the heat strip to your AC. Worked for us with 17 degree outside temps in DEN.
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Looks like there are couple of differences:
*One the system is only $495 online.
*Heating you coach from the ceiling via a rooftop AC heater will not keep your under floor stuff from freezing.
*When heating from the roof your floors are always cold.
*You can NOT heat a 38 or 40 ft coach with multipal slides down to 17 degrees outdoors with a 1800 watt AC heater coil.
I have some sizing information right off of there web site.
When talking about heat output, remember that a gas furnace is only 60% efficient, 40% of the heat goes out the flue. But an Electric heater has no flue so it is 100% efficient. This means a 40,000 BTU an hour furnace has only 24,000 BTU an hour output.
Additionally, a gas furnace has a 60 second pre-purge cycle and a 90 second post-purge cycle. Which means that for every heating cycle, there is 2 1/2 minutes of run time with no flame (heat). After taking into consideration the 2 1/2 minutes of no fire each heat cycle, along with the efficiency issues your true output into the coach with a 40,000 BTU gas furnace, is about 18,000 BTU an hour when measured at the register. The 100% efficient CheapHeat™ DH50 has a true 17,500 BTU an hour output to the register (Add-On or Stand-A-Lone).
The best way to explain it is if you measure the temperature at the floor register the electric heat output is +/- 5 degrees of what a gas furnace puts out (depending on the length of the ducting).
Heater Configurations
The Stand-A-Lone system (CH50-SAL) provides the same amount of heat as the Add-on System:
• CH50-DH50: Comparable to 40,000 BTU Gas furnace (Requires 50 Amp Service)
• CH50-DH37: Comparable to 30,000 BTU Gas furnace (Requires 50 Amp Service)
• CH50-DH18: Comparable to 20,000 BTU Gas furnace (Requires 30 or 50 Amp Service)