Heating, cooling, air, water and fire — the mechanical backbone, from boiler rooms to drain lines, balanced and tested at handover.
HVAC contractors (general)
Air-conditioning systems (non-window)
Central AC & cooling equipment / piping
Central heating equipment & piping
Chilled water systems
Cooling towers
Heat pumps
Furnaces & forced-air systems
Furnace conversion & humidifiers
Boilers — heating & power (install only)
Boiler chipping, cleaning & scaling
Fuel oil burners
Natural gas fireplace & piping
Gas fitting & gas line hookup
Hydronic / radiant floor heating
Warm air & dry heating systems
Hot water heating systems
Water heaters & hot water tanks
Duct work — heating, cooling, exhaust, dust
Sheet metal duct work
Heating / cooling / ventilation duct systems
HVAC components — registers, diffusers, grilles, attenuators
Air vents & ventilation systems
Exhaust systems — kitchen / industrial
Dust collection & bag house equipment
Air system balancing & testing
Water system balancing & testing
Air purification scrubbers
Deodorization / air filtration systems
Chimney liners
Snow melting systems (hydronic)
Solar heating equipment
Commercial refrigeration & freezers
Warehouse & scientific refrigeration
Industrial & process piping
Pipe fitting & steam fitting
Plumbing contractors & fixtures
Kitchen sinks & hardware
Bathroom fixtures & sanitary ware
Drinking fountains
Drain, waste & vent systems
Sewer hookup & connection
Sump pumps & water pumping systems
Water meters & softeners
Household oil storage tanks
Lawn sprinkler systems
Fire sprinkler systems
Fire extinguishers (install & repair)
Waterless fire suppression (install & repair)
Built-in vacuum cleaning systems
Humidity control systems
Mechanical contractors & ventilating contractors