Question about Cozy (W352E) Heater

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My Cozy Heater sized and installed by professional will not heat

I have the 9,000 BTU Unit that was insatalled by American Ideal Heating & Cooling and I cannot get the room to heat to more then 57 degrees! When I went on the Cozy website, sized the room for their Vented Gas Heaters, going on the high end calculates to needing 9,856 BTU's to heat this room. The thing runs 24/7 non stop and hits a high of 57 degrees period? The installer told me based on his calculations I only needed a 5,000 btu unit, I am lost and very frustrated right now. Room measures 22' x 8' x 8' which comes to 1,408 Cubic Ft. The insulation Factor is (1) Temperature zone is (5) even though I used (7) in my calculations because it has been colder then usual. Unless I get some answers, I am to the point of seeking legal representation on this one!!

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  • heatguy May 11, 2010

    well sounds like the unit is under sized the proplem is most factors in heat loss are subjective which kind of means legal recoarse may not work i would call installer and have him check installation there may be something such as not enough gas pressure or improper installation. if installer gives no answers try manufactorers rep

  • paulcarew May 11, 2010

    can you send me the link you used for cosy please so i can see how this was worked out , it is worked out on u values which is heatloss size of room howmany outside walls wall thicknes etc


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I'm assuming your heater is the little Cozy direct vent wall furnace, your room calculations are correct, and at 57 degrees your main burner is constantly on. If so, it sounds as if you have too low a flame which can be caused by a main burner jet with an undersized orifice (like a propane one that got in the wrong assembly line) or obstructed by dirt, inadequate gas pressure, or a main gas valve that is not fully opening.

Open the pilot light inspection door and look at the main burner flame height. If it is less than 2 inches or so, check out the three possibilities above. If the flame is very yellow and wandering around lazily, check the air intake on your vent cap for obstruction.

Posted on Mar 15, 2009

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