New guy with a heating question

[Ivan DeSlayer]

Hi everyone. I got an issue and I’m hoping someone can help me out here. I have a small 2 car garage that my wonderful wife recently purchased me a wall mounted heater for. The garage is your typical 1950’s 2 car garage with a ridge beam and stringers running up to it. I have installed a ceiling fan to move the air around in there and the heater does come with a blower. The only issue I have is the previous owner had connected a shop off the side of the garage and I wanted to also heat that with this heater. The shop shares a wall with the garage and has a door into garage. Opening up the wall to the shop is not an option at this point though.

 

[Red Green]

Can you run a duct off of the heater's blower into the other room?

 

[Ivan DeSlayer]

The blower is built in but I might be able to fab something up. Any other ideas?

 

[BoilermakerNate]

I would avoid directly ducting the wall heater to the shop if possible. The fans on those types of heaters aren't meant to handle the added static pressure you will experience with adding ductwork. It would allow you to serve both spaces, but your supply airflow will be decreased and would most likely not be sufficient to handle both spaces.

If you can't knock down the wall at this point, I would provide two transfer openings in the wall between the garage and shop, one high and one low. I would then put a small wall fan in the bottom opening blowing into the shop. This will allow you to pull warm air from the garage space and blow it into the shop at floor level. The opening at the top of the wall will allow air to migrate back to the garage from the shop, providing better mixing of the room air and a more even temperature. It would obviously be better to just put another heating source in the shop or tear down the wall, but with the given situation, this would help to temper the shop space.

So how big of openings? How big of a fan? Depends on the size of the shop, the temperature you plan on keeping the garage at, and the average temperature in the unheated shop during the winter.

 

[trythis]

How about installing a through the wall style exhaust fan in the door itself. You could get another door and cut it up instead of your door. One on top, one on bottom, just dont call any electrical inspectors over.

 

[Ivan DeSlayer]

Thanks guys for the input. I'm going to try the exhaust fan and opening in the wall to heat the shop.