Insulating Your HVAC Ducts

The efficiency of your boiler depends on a lot of things. Even if you have the most efficient modern boiler on the market, you can lose a lot of that warm air through your duct system. Most significantly, the sections of ducting that are exposed, and in rooms where the temperature is not control, can lead to reduced efficiency. This article explains this boiler repair problem and how to fix it.

Finding Exposed Ducts

Boilers are usually in basements, utility rooms, garages, and other spaces that don't have conditioned air. That is, during the winter, these rooms can be much colder than the rest of your home. Most boilers will have a significant amount of ducting that is exposed as it extends to the walls. These sections of ducting that are outside of the walls can lose a lot of heat. So, by the time the warm air in your ducts reaches your rooms, it may have already cooled down. significantly.

Adding Fiberglass Insulation

To solve this problem, you can easily add fiberglass insulation to these exposed sections. Continuous rolls of batting-style fiberglass insulation are the most useful for this job. They allow you to easily wrap insulation around the ducts, and then simply tape them down. Protect your eyes and skin from the fiberglass. Wearing protective eyewear, gloves, long pants, and a long sleeved shirt is essential when working with fiberglass insulation.

Basically, the more you insulation you wrap your ducts, the less susceptible they will be to heat loss. Of course, the space around the ducts can often be confined and narrow, so just do your best to fully cover as much of the duct as possible. It might be awkward, but the labor shouldn't be too demanding.

In fact, you can add fiberglass insulation to any exposed ducting throughout your system. For instance, homes with attics, crawl spaces, and basements often have large sections of ducting that are not covered. Adding insulation to these sections will be equally worthwhile.

This is a very cheap remodel, and one that could end up saving you some money on your monthly bills. Fiberglass insulation rolls are cheap and they come with a lot of insulation. Some rolls have over 60' of insulation, so you can wrap (and even double wrap) your ducts for less than $50. In the end, this is an investment that could pay for itself many times over through your lowered utility bills.


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