Installing Mr. Heater - Horizontally or vertically vent?

[Rocketrod]

I am getting ready to install a Mr Heater 45K BTU garage heater. I would like to vent this out the side wall (horizontally) as it would be a much shorter run and a little easier than getting in the attic and drilling a hole in the roof. My only concern is backdrafting. Anyone here side vent a unit like? If so, are you having any backdraft issues?

 

[dave67fd]

That is fine for as long as you follow the proper codes and guidlines for horizontal venting. You should try to avoid a wall that see's prevailing winds and/or you could install a high wind termination cap. Backdraft can be a problem and can/may shut the heater down.

 

[Rocketrod]

...Backdraft can be a problem and can/may shut the heater down.

Thanks for th reply. Backdraft is my concern. I guess I will just haveto see what type of termination caps are offered locally.

 

[Bender78]

I'm going on my third heating season with my 75K BTU Mr. Heater unit. Mine is horizontally vented; I've never has any problem with back drafts.