Hello, I don't know all the right terms, so I'll just ask in regular talk. Thanks ahead of time for any help.

My garage is cold. I never do things in there because of that. I'd like to make it warmer. I've tried space heaters and whatnot. They don't work.

Can I cut the duct work that's there and put a vent/grate to heat it? There's various pipes.

I know this sounds really dumb, but can it be done like this?

 

Cutting into an existing heating duct is not a good idea. Most room ducts will come off the main plenum that usually runs the length of the basement. By cutting into one of those duct will pretty much cut off most of the warm air that the original room was meant for. Plus you'll upset the whole balance of the heating system. A whole house heating system is designed for the total square footage of the assumed living space. You're adding to that square footage without compensating on the heating source. Besides the garage outside walls most likely are not insulated. Looks like you're just trying to heat the whole outdoors. I suggest an infrared heater for the garage. It will heat the surfaces in direct line of sight but not the air, unless you get the type with a fan inside in which case a metal plate within the unit will be heated by the rays and in turn a fan will blow that heat out to warm the air.

 

No!! against every code known to man! They do this so you dont wake up dead

 

Airman got this right - you can't mix garage and house air like this.

It sounds like you need to look at insulating, as space heaters are normally enough to at least take the edge off the cold.

 

If you have been trying to use 120 volt portable heaters they just aren't designed for that. You need to run a 240 volt line to the garge and use a 240 volt space heater. Example: Heaters | Portable Electric | Dimplex® Garage / Workshop Heater | B638886 - GlobalIndustrial.com

 

Yep -- you don't want a fire spread from the garage directly into the house or CO and other fumes.

 

Thanks everyone. I'm glad I asked. I know it was a silly question, but I had to know.

 

We're glad you asked as well; it was not a silly question.

 

Ditto ---no such thing as a silly question.