Can Mold Grow In A Duct System?

Can mold grow in a duct system, and what problems can it cause? Mold spores require a stable temperature, a food source and moisture to live and reproduce. HVAC systems provide all of these things. Any dust or dirt that passes through your air filter provide a good food source. The furnace or air conditioner is designed to maintain a comfortable temperature, and moisture is available from several of the components in an HVAC system. Ductwork provides humid conditions, the humidifier in the furnace is wet and often holds standing water, and cooling coils are ideal areas for mold growth....Read More

How to Maintain Your Electronic Air Cleaner

Electronic air cleaners are very common in the Toronto area. These units produce up to 15,000 volts of electicity to "zap" any dust particles that pass through the cells, and it is quite common to hear an arcing sound for a second or two any time the air cleaner "zaps" another dust particle. These units normally come in sets of two cells, and have two prefilters as well. Electronic air cleaners need to be cleaned on a regular basis, and the frequency of cleaning is slightly different for each house.The rule of thumb is that you should remove and clean both...Read More

Removing Blown-In Attic Insulation

There are several reasons why someone would want to have the insulation in their attic removed. The most common reasons are due to renovations, the homeowner finding out they are allergic to the existing material, or after rodents (usually squirrels or racoons) have found a way into the attic space. Besides air duct cleaning and a host of related home heating services, City Duct also does attic insulation removal, and we have been providing this service since our inception in 1987. Here are some photos of a recent attic insulation removal job that we completed recently. This home was undergoing...Read More

Keep Your HVAC System Germ-Free Easily

Years ago, the HVAC industry addressed a huge problem concerning mold growth that was due to the very common drum-type humidifiers that most people already had installed on their furnaces. With water constantly sitting in the water tray, it provided a very high source of mold growth.The answer brought about the introduction of the flow-through type humidifier, which uses only enough water to humidify your home, and any water not used by the process is drained away. These types of humidifiers are now very common. The replacement of drum-type humidifiers with a flow-through model is crucial to improving indoor air...Read More

Why should air ducts be cleaned?

Studies have shown that indoor air can be from two to five times more polluted than outside air. Most disposable filters remove about 10 percent of these pollutants, allowing 90 percent to enter the air system, and this happens even during the construction of a new home. The pollutants contain dust, pollen, mold spores, animal dander and much more. These materials collect in the furnace, air conditioner and duct surfaces, just as they do visibly on the furniture and floor surfaces. The furniture and floor in your home are cleaned regularly but the duct surfaces are hidden from view and...Read More