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Air & Habitat

Air, Ventilation, Thermal Comfort

HomeThermal Comfort

TC

Thermal Comfort

Make sense of heating, cooling, humidity and the feeling of comfort.

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A photograph of a clipboard on a kitchen table holding a printed room-by-room worksheet with blank fields, next to a laser distance measurer, a pencil and a folded floor plan sketch of a small house, photographed in soft daylight.

Thermal ComfortTC-006

Manual J: What Homeowners Should Understand

Manual J is the load calculation behind correct HVAC sizing. Learn why square-foot rules of thumb fail and what a real calculation accounts for.

A photograph of a residential mechanical closet showing a compact furnace cabinet beside a copper refrigerant line set running toward an outdoor heat pump, with a small labeled switchover control mounted on the wall and a notepad on a shelf.

Thermal ComfortTC-004

Dual Fuel Systems: Heat Pump Plus Furnace

A dual fuel system pairs a heat pump with a furnace and switches by temperature or cost. Learn what it is, when it fits, and what to ask.