Why is the requirement for a certain distance from the unit (e.g. 10 feet) for return air access so close? I would think that it should be in a separate room with an auto-closing doorway between.
The return air system is a vital part of your overall heating/cooling system. If you place a closed door betweem the return air registers and the rest of the house, there would be only limited air flow and the whole heating/cooling system would suffer. Would create hot/cool areas where you do not want any. It's all a trade-off but better to have good air circulation and more even heat/cool.
Actually, what I meant was how can the return air be allowed to be so close to the unit, especially on a low, gravity fed, or standard efficiency unit where the negative pressure from the return air can draw combustion gasses back down out of the flue into the furnace closet? Wouldn't it take a door and some greater distance than that to keep this from happening?
Thank you for your input. You seem very knowledgeable about HVAC. I am also currently looking for someone who is knowledgable about HVAC and may have a large number of photos on HVAC defects/code problems on both new residential and commercial. Do you know of anyone like that?
- 15 Old House Features We Shouldn't Abandon
- 17 Tiny Bathrooms We Love
- Make Your Bed: 9 DIY Headboards
- Insanely Easy 60-Minute Home Improvements
- Space-Saving Solutions for Tiny Bedrooms
- 9 Perfect Color Combos for Your Home
- 22 Tiny Houses We Love
- See the Most Highly Anticipated Colors for 2015
- What's the Best Color for Living Rooms?
- Favorite Space-Saving Double-Duty Furniture
- 10 Low-Cost DIY Home Security Solutions
- Redecorate Without Spending a Dime: 10 Ideas
- 10 Houseplants You Can Grow Anywhere
- 9 Amazing Mobile Home Makeovers
- 10 Doable Designs for a DIY Rug
- 9 Alternative Uses for Toothpaste
- Live Large in a (Very) Small Space
- 8 Cheap and Unique DIY Nightstands
- 15 Eye-Catching Options for Your Front Door
- Supersize Your Small Bath with 8 Pro Tips
- Don't Try This at Home: 7 Dangerous DIYs
- 10 Simple Woodworking Projects
- Is There Anything Vinegar Can't Do?
- 7 Incredible Uses for Salvaged Lumber
- 12 Tiny Gardens You Can Grow on a Tabletop
- 16 Sneaky Storage Ideas
- 10 Surprisingly Smart Solutions for Junk Drawers
- Bright & Bold Colors for Your Front Door
- DIY Bookcases: 16 Easy Project Ideas
- Don't Make These 7 Fireplace Mistakes