When I wasn’t happy with the performance of my furnace, I did some research.
I googled my various concerns with the heater and read all sorts of blogs.
The furnace was running for extremely long cycles. It rarely shut off and yet the house often felt slightly chilly. Raising the thermostat setting didn’t make much of an improvement. There simply wasn’t enough hot air coming from the vents. There was also a big difference between the temperature in one room and another. I’d also noticed an increase in the amount of dust floating in the air and gathering on surfaces. All of these issues pointed at leaks in the ductwork. Since the duct system is installed inside walls and ceilings, I was worried about how to access it and make repairs. I learned that there is a rather innovative method of duct sealing available. It’s called Aeroseal and works by targeting the holes in the system from the inside. The technician first blocks off the supply and return vents, then pumps highly pressurized air into the ducts. The air leaks out of all the various holes, cracks and imperfections. This air contains adhesive polymer particles that stick to the edges, steadily build up and form a tight seal. The whole process takes a couple of hours. The polymer particles are non-toxic and leave no residue behind. The Aeroseal service is warranted for ten years. Once it’s completed, the technician tests the ductwork and verifies the results. My problem was finding a contractor in my area who is licensed to perform Aeroseal duct sealing.