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Old 10-28-2011, 12:23 PM   #1
2 Rivet Member
1977 27' Overlander
Cumming , Georgia
Join Date: Oct 2011
Posts: 27
Images: 7
Question Heating and AC question..

I am in the process of buying an overlander and I know the ac works but the heater has a crack in the air exchange.

The original rooftop dometic ac is installed and is operational.

I found two rooftop ac/heater units by briskair. It would replace the top dometic ac with a duo-therm electric heat option. Is this a good idea?

I still intend to get the surburban heater replaced as well. But I'm going to look at these briskairs in the morning.

2 units for $500? sound like a decent deal?

I'd love some input on this. Thanks for your in advance for your advice

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Old 10-28-2011, 02:04 PM   #2
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2010 30' Classic
Vintage Kin Owner
South of the river , Minnesota
Join Date: Dec 2009
Posts: 4,129
Duo-therm is the name of a product made by Dometic. So, you're considering the replacement of a Dometic A/C with another Dometic A/C.

You would want to be sure that the capacity of the new unit is the same or larger. I would guess the one you have now is 12,500 BTU/h.

The "Brisk air" is the larger (standard profile) product. Airstream used low-profile air conditioners once these were available, and you probably have one. The three benefits of a low-profile air conditioner are: fuel economy while towing, bridge clearance, and exterior appearance -- the low-profile units blend better visually.

In general the A/C units equipped with electric heat do not provide enough heat to be of much use. If you really want electric heat in the A/C unit you may find that it's cheaper and far less work to add the heat strips to the unit you already have.

Typically the gas furnace produces around 8x as much heat as the heat strips. About the best you can hope for from the heat strips is to keep the trailer at 70 degrees when it's 60 degrees outside.

$500 for two A/C units is an OK deal if they're new 12,500 BTU/h units. If they're take-offs or the smaller 9,000 BTU/h units then it's probably not an especially good deal.

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Old 05-09-2013, 01:54 PM   #3
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1974 27' Overlander
2015 28' International
Little Rock , Arkansas
Join Date: Jun 2012
Posts: 26
I need to access my heater unit which is under the stove. The cabinet tambor door will not roll back enough for clearance however. Does anyone have any ideas?
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heater, surburban, air conditioning, duotherm

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