[jay_oh]

I'm getting ready to starting finishing off an attached garage that is 24 x 28ft with 9.5ft ceiling height and looking at heater options.
I have natural gas available and would prefer using a ducted attic mounted gas furnace (non-condensing). The reason for this is space. I'm doing a fair amount cabinets and finishing it off nicely so I would prefer not having a self contained heater hanging from the ceiling.
I'm located in SW Ohio so may have days needing a 50+ degree temp rise.

a few questions:
1. Any drawbacks to this I should know about?
2. Any furnace recommendations?
3. Should I place vents in wall near floor or keep them in the ceiling?

Thanks for your help!
Jay

 

[Bitters]

Question 3: put the vents on the floor.

 

[yuri]

I have seen them near the ceiling in garages and because it is so small and a box it makes no difference IMO.

Goodman or Rheem if they have a multiposition 80% efficient unit if it has to go horizontal. If the garage attic is high enough for the furnace and a plenum then you can get a regular upflow and install a plenum and turn it down and run ducts.

Furnace is 34" high and you need a 2-3 foot plenum at least. Would have to check their install manual for the minimum size.

 

[firehawkmph]

Check out a Williams Forceaire, direct vent natural gas furnace. Two speed fan, quiet, 62K input, 80+% efficiency. They are about 7' tall, 14" wide. Vent through the outside wall. Draws cool air in the top and blows warm air out the bottom. easy install, requires 110v outlet. I have three of these units I. Three different areas of my shops. The one in my wood shop heats an area of 26' x28' X 10 1/2' very well. I live in NE Ohio about a half hour from the lake. In the cold weather, single digits, it heats the room up in less than a half hour then cycles on and off. The other main benefit is safety. It has a sealed combustion chamber which draws in outside air. No worries about shop explosions. Around $1100 for the unit and vent kit. No real maintenance required. My oldest is 23 years old now.
http://www.alpinehomeair.com/viewpr...ElGyqiumBcU0HqYwbrDFGz_PnZShCmtwh7xoCSTDw_wcB
Mike Hawkins:smile:

 

[jay_oh]

Thanks for the advice guys. I'll post what I decide on when I get it figured out. Looking forward to getting this project started after several weeks of below freezing temps.