Leaky ductwork is one of the most common causes of energy loss in residential and commercial HVAC systems. Without proper duct sealing, your system has to work harder—leading to higher energy bills and reduced comfort. At Hatfield Heating and Air, we use proven air duct sealing methods that boost efficiency and keep your home comfortable year-round.
Here are five of the most effective HVAC duct sealing techniques:
1. Mastic Sealant
Mastic is a thick, paint-like substance applied directly over duct joints and seams. It’s one of the most durable sealing materials, especially for irregularly shaped connections. Our technicians at Hatfield Heating and Air often use mastic for long-term, flexible sealing.
2. Foil Tape
Foil-backed tape is a quick, reliable solution for small leaks and gaps. Heat-resistant and approved for HVAC applications, it’s recommended over regular duct tape.
3. Aerosol-Based Sealing (Aeroseal)
A cutting-edge method where a mist of polymer particles is blown into the duct system, sealing leaks from the inside out. This technique is ideal for hard-to-reach ductwork and delivers excellent results with minimal disruption.
4. Duct Clamps and Mechanical Fasteners
Mechanical solutions such as clamps, sheet metal screws, and brackets are used for larger gaps or disconnected ducts. These are often combined with mastic or foil tape for reinforced sealing.
5. Insulated Duct Wrap
While not a sealant, wrapping ducts in insulation after sealing helps prevent condensation and heat loss, improving overall system efficiency. Hatfield Heating and Air recommends this step to support sealing efforts and reduce energy waste.
Proper HVAC duct sealing not only lowers utility costs but also improves air quality and extends the life of your system. For expert air duct sealing services tailored to your home, trust the professionals at Hatfield Heating and Air.