After weathering a whole bunch of problems with my furnace and air conditioner, I’ve learned the importance of a good duct system. A duct system that is properly designed and sealed provides a way more comfortable, energy efficient and cleaner house. When my power bills steadily increased every month, I thought the heating and cooling equipment was faulty. I told a local HVAC professional and he discovered that leaks in the ducts were responsible. Doing duct sealing and insulation greatly improved the comfort of the home. Rooms were constantly too hot in the summer and chilly in the winter, but now my family enjoys a more even temperature. We also benefit from better indoor air quality. Dust, fumes from the garage, insulation particles and all sorts of nasties were entering the duct system through small holes, irritating my daughter’s asthma and causing all of us mild headaches and even flu-like symptoms. Duct sealing reduces the risk of pollutants getting sent through the home and protects against backdrafting. All too often, appliances such as water heaters, furnaces and clothes dryers produce combustion gases, which can be drawn back into the living space and then introduced into breathing air. There’s also the cost savings. The furnace and air conditioner now operate at peak efficiency, trimming monthly costs due to patching up the ducts. The duct sealing process isn’t overly expensive, invasive or too long a process. It usually takes a mere few hours and requires the HVAC contractor to close off all of the supply and return vents. His trick is blowing pressurized air laced with adhesive particles into the duct system. As the air escapes through holes and imperfections, the adhesive particles buildup until the leaks are sealed. It’s quite neat!