New construction HVAC installations

Existing structure HVAC installations (i.e. replacements)

HVAC maintenance and repairs

Refrigeration system installations, maintenance and repairs

Air conditioning system installation (except window units)

Air vent installation

Furnace conversions (i.e. from one fuel to another)

Refrigeration system (e.g. commercial, industrial or scientific) installation

Heating, ventilation and air conditioning (HVAC) contractors

Furnace humidifier installation

Natural gas fireplace installation

Duct work (e.g. cooling, dust collection, exhaust, heating and ventilation) installation

Ventilation equipment installation

Heating and ventilation system component (e.g. air registers, diffusers, and filters) installation