Fresh Air Supply Vent

Tim Carter, of http://www.AsktheBuilder.com, demonstrates how to get fresh air into your home. Furnaces, gas water heaters, exhaust fans, etc. push air from houses, and it must be replaced.

Category:

Howto & Style

Tags:

• fresh
• air
• vent
• makeup
• combustion
• backdraft
• tim
• carter
• ask
• builder

[nate379]

What is the brand of that vent?

I am working on installing a 450cfm exhaust fan in my garage/workshop to help ventilate from welding/paint fumes and deal with humidity in the winter (gets high from snow melt off cars). I think it would work for my application but I can't find anything on google about it.

[AsktheBuilder]

@nate379 Equailzer

[NielThomas16]

Is it illegal to not have a fresh air or make up vent in Thurston County, Washington? Because my furnace has a fresh air vent on it but it gets it from the garage, and sometimes gas fumes may make there way into our house. What should I do?

[AsktheBuilder]

@NielThomas16 Call your building department TOMORROW.

[darthmal]

My problem is I have one fireplace. It recently start to spew smoke back into the house even though I have the flu fully open. I also started to smell firewood smoke in the basement near my furnace, which seems to vent out th the same chimney. There two small hinged doors at the bottom of the wall where the furnace vents out and I don't know what they are for. I was told for ashes but they are both empty. I called a chimney guy but without looking he wants to replace everything and wants my kid

[AsktheBuilder]

@darthmal Go to my AsktheBuilder website now. Go read EVERY column I have there about Smoking Fireplaces and Chimneys. Your answer is there.

[jeffllind]

I have found that makeup air requirements aren't always addressed as changes are made in older structures. The building that I'm currently doing maintenance work on has several issues with makeup air and air circulation. Bad engineering in these can lead to inefficient and possibly hazardous operation such as darthmal related.

[AsktheBuilder]

@Benny902100 It depends! What's the difference between the humidity indoors vs. outdoors, and what are you trying to achieve? That's a rhetorical question. I'm not trying to generate a thread. Just understand your mixing outdoor air with indoor air. Remember back to your high school physics class to imagine what will happen. You can also read all about humidity and air temperatures at my AsktheBuilder website.

[Benny902100]

Will this system help with humidity?

[AsktheBuilder]

Thanks!