Understanding HVAC Systems

Welcome to my blog! My name is Darren. My friends say that I am boring because I love the HVAC system in my home. I am not an HVAC professional, I just love the gentle hum of my air conditioning system as it gently brings the air in my home to the perfect temperature. When I was a kid, my family couldn't afford air conditioning so I spent many summers sweating away and feeling miserable. I vowed to myself then that when I grew up, I would have the best HVAC system money could buy. I hope you find my HVAC blog useful.

6 Tips for Repairing Damaged Duct Insulation


Ducts are a vital part of a home heating system. They transport heated air throughout the home so that it can warm all rooms to the desired temperature. Ducts are covered in insulation, which stops heat leaking from the ducts into attics and crawl spaces, where it is wasted. If the insulation gets damaged, you can repair it yourself to prevent heat loss and help to keep your home heating system working efficiently.

1. Ensure the Duct Is Not Damaged

Before you replace or repair damaged duct insulation, you need to ensure that the duct itself is not damaged. To do this, hold your hand in front of the damaged section while the heating system is running. If you feel not just radiant heat, but a warm stream of moving air hitting your hand, then there must be a hole which needs to be repaired before you can fit new duct insulation.

2. Fix the Duct if Necessary

If the duct is torn, the first step to repairing it is to switch off the heating. Next, use foil tape to repair the hole in the duct. Cut a strip of tape long enough to completely cover the tear in the duct and smooth it down firmly to create a secure seal. If the hole is too large to cover with tape, seek professional help from a heating repair service.

3. Reinforce the Repair

If you repaired your duct in the previous step, you need to strengthen the repair before you add insulation on top of it. Apply dust mastic to the tape using a paintbrush and allow it to dry completely before you move onto the next step.

4. Replace the Insulation

Strip the damaged section of insulating material away from the duct. To replace it, you need to use fibreglass insulation with a thickness at least as much as that of the original insulation. This type of insulation can be irritating to the airways and skin, so be sure to wear a mask and gloves while you carry out the repair. Tape the new fibreglass insulation into place using plenty of foil tape.

5. Secure the Insulation

You can make your repair work more durable by applying duct mastic on top of the foil tape and fibreglass insulation. Use plenty to protect the insulation from wear and tear.

6. Ask For Help

If you struggle with any aspect of this repair work, do not hesitate to contact a heating repair company for help. They can carry out the job for you to a high standard.

Reach out to a local heating repair company today to learn more.


26 August 2020