Ductless Mini-Split

Related terms

• Ductwork

  The supply/return passages distributing conditioned air. Leaky or undersized ducts are a top cause of comfort and efficiency complaints.

• Head

  The horizontal top member of a window or door frame, below the structural header.

• Heat Pump

  An electric system that moves heat instead of burning fuel, providing both heating and cooling. Highly efficient; cold-climate models now…

• Zoning

  Local laws governing how land may be used and what can be built where, including size, height, and setback limits. Additions and footprin…

• Zoning (HVAC)

  Dampers and thermostats dividing a house into independently controlled areas for comfort and efficiency, common with two-story homes.

• Electric Resistance Heat

  Baseboard, wall, or furnace strip heat that converts electricity directly to heat. 100% efficient at the unit but expensive to run versus…

• Duct Sealing

  Mastic/foil-tape sealing of duct joints to stop leakage (often 20–30% of conditioned air). One of the highest-ROI efficiency improvements.

• Electrification / Heat-Pump Retrofit

  Replacing fossil-fuel HVAC/water heating with heat pumps. Often paired with a panel/service upgrade and may qualify for IRA tax credits a…