View Full Version : Residential garage heater
11-09-2005, 08:25 PM
I am considering adding a nat gas fired heater to an oversized 2 car garage attached with insulated walls not ceiling. This will probably only be used during extreme cold (below 10 degrees) and to dry up slush from vehicles. I am debating between a Hot Dawg HD45 or just putting in a vent free 20-30,000 btu designed for a garage. I am a service rep for a nat gas utility in the northeast and have run across both installations. Since it will not be used for long periods I dont expect that lack of oxygen will be a problem I am however concerned with condensation. Have read previous posts and am still up in the air, has anyone had bad experiences with either or any recommendations.
11-09-2005, 08:52 PM
Nothing will "dry" out using a ventless heater.
11-09-2005, 11:41 PM
mr.heater makes a 1oo%fuel efficient ventless heater which I have installed and the cust. loves it.
11-09-2005, 11:59 PM
A little more info would be helpful....If it's just a two car garage....and you want to knock the chill off or keep it comforatable in the summer...how about a "thru-the wall P-TAC unit"....like the ones you find in motels....Someone I know enclosed their garage and let me put one in....they have been very satisfied with the results...
11-10-2005, 08:44 AM
11-10-2005, 09:23 AM
Why screw around with ventless or PTAC. Just put up a 4" chimney and hang the Hot Dawg. You'll have dry air and plenty of quick heat if you want to work out there.
11-10-2005, 10:59 PM
i think the hot dawg is the way to go put one in for a customer we do alot of work for and he lovrs it and they are really easy to install also you can vent out side wall if you dont want to go through the roof and chance a roof problem down the road.best thing with that is it gets the temp up quick so if its cold you can turn it on a little bit before you plan to leave and have the cars warmed up before you get in the wife will love it.
11-11-2005, 11:46 PM
back to my previous reply about a mr. heater:
In the past I always installed reznor or hot dawgs in garages and my supply house always tried to talk me into the mr. heater infared ventless, non powered wall hung heater that is designed for a 2 1/2 car garage.
My best friend wanted to be the gambler or should I say G. pig due to much cheaper price but most of all infared heat is exactly what should be installed in a garage since it heats the concrete/cars and not only the air.
Well I must admit it's been three winters and I haven't installed any thing but the infared in a residential garage.
I bought it through my supply house but you can find it on http://www.enerco.com it comes as a complete kit including the wall bracket,hardware,stat,18/2 wire,and a fresh air louver with bird sceen to mount on the side of the garage.
No I don't work for them at all but after all of this I should be a sales rep.
IT's much cheaper,easy to install but most of all infared works ALOT better in a garage.With a unit heater when you open the door you lose most of the heat and infared you don't .All I can say is I gambled and won.
11-12-2005, 07:34 AM
Are there any concerns about clearance to objects below the unit? I can see problems in residential applications with a garage having eight foot ceilings.
11-12-2005, 08:55 AM
Usually you have to keep them 6" from the ceiling and at least 2-3 feet away from objects below. I think in a residential garage you'd be better off mounting it in a ceiling/wall corner at a 45° angle so you do not walk directly under it.
11-15-2005, 02:15 AM
The infared heater comes with a wall bracket that mounts it at a 45 degree angle,and also comes with a very large template that you stand on the floor against the wall and it has the elevation height and the exact markings for the bracket mount.The lag bolts are also provided.
11-15-2005, 11:09 AM
Personally I recommend the Reznor UDAS seperated combustion unit. They are approved for residential garages, have seperated combustion with a concentric vent so you do not pull garage air into the burner, hang only 13" off the ceiling and are efficient and nice-looking. See http://www.rezspec.com/catalog-udas.html for more info.
11-16-2005, 11:49 PM
I service and install both Reznor and Hotdawg unit heaters. I personally like the reznors better, have VERY few issues with them. The Hotdawg has a honeywell smartvalve in it that is prone to failure. If anybody has a hotdawg or installs one I highly recommend installing a 3 amp fuse on the transformer. I have seen smartvalves wreck everything on the low-voltage side.
11-17-2005, 04:27 AM
I have to agree with you all that both reznors and hot dawg unit heaters are very good products.Remember in my first reply I said that I used to install these types and was happy with them as you are.The same supply house that I purchased these through were the ones that always tried to convince me that the infared wall mount is the way to go.All I can say is I tried it on my friends 2.5 car garage and it works better than words can explain.
The choice is ours,but the facts are that infared heat will retain better than any other and this unit is 100% efficient on fuel and requires no electric.
good luck to all and may this winter be a cold $one$
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