Poor airflow is a symptom, not a diagnosis. The cause may be as simple as a loaded filter or as involved as undersized ductwork, a dirty coil, return leakage, [...]

When one room receives too much conditioned air and another receives too little, many homeowners start closing registers. That may provide a small local change, but it is not [...]

NADCA certification is one useful way to evaluate an air-duct-cleaning provider. It signals that a company participates in an industry organization focused on HVAC inspection, cleaning, and restoration and [...]

Many older Connecticut homes were built when duct-sealing materials, energy requirements, and installation practices differed from today’s expectations. Age alone does not prove a duct system is defective, but [...]

Attic ductwork faces large temperature swings. During humid weather, cold supply air moves through ducts surrounded by hot, moisture-laden attic air. If insulation, vapor barriers, connections, or airflow are [...]

Electronic—or motorized—dampers are the airflow gates in a zoned HVAC system. Each zone has a thermostat or sensor. A control panel interprets calls for heating or cooling and commands [...]

Air ducts are part of a circulating system. Supply ducts deliver conditioned air, while return ducts pull indoor air back to the equipment. Every operating cycle moves air through [...]

The blower wheel is the part of a forced-air HVAC system that moves heated or cooled air through the ductwork. Its curved blades are designed to capture and push [...]

A whole-home ducted humidifier can make winter air more comfortable, but it combines water with an HVAC air stream. That makes maintenance essential. Mineral scale, standing water, clogged drains, [...]

Not every duct is bare sheet metal. Fiberglass duct board can form the duct itself, and sheet-metal ducts may contain internal fibrous liner for insulation and sound control. These [...]