It’s been a weird winter. Just today there was a layer of ice on my truck this morning, and the high this afternoon is expected to by 71 degrees.
We can not yet turn off our heating systems. Additionally, fixes we do now will save us energy and money in winters to come.
Heat loss occurs for a variety of factors. The two most common are:
- No furnace of heat pump is 100% efficient.
- Ducts leak
I’m focusing on duct leakage, as it’s so easy to fix.
Average duct leakage is 15%, which means for every dollar you spend to heat the air, only $.85 of that makes it into your home. The rest heats your attic or crawl space.
Although duct sealing is a bit of a pain (since you have to crawl the ducts to seal them), once you’ve done it, your heating bill goes down immediately.
To seal your ducts, you need the following:
- Duct mastic (it’s a putty designed for this).
- Metalic duct tape (IMPORTANT: fabric duck tape is not suitable for sealing ducts).
- A few hours
- A willingness to crawl the ducts
The procedure is simple in concept. On every seam and/or corner, apply duct mastic to the seam or corner to ensure that section of the duct is fully airtight, and/or cover the seam or corner with metallic duct tape (again DO NOT USE FABRIC DUCK TAPE). For added benefit (after all, you’re already in the attic or crawl space), wrap insulation around the ducts.
The image in this post shows a duct that has been properly sealed with duct mastic.
However, if you think your ducts are made of asbestos, do not seal and tape them. Hire a professional.
If you need help with general home improvement or home repair, please consider us. We do excellent work!
Not only can we help you seal your duct system, we know a lot about plumbing as well. Please consider us for your next remodeling project.