Dehumidifier (Whole-House)

Related terms

• Dimmer Switch

  A control varying light level. Must be compatible with the bulb/driver type (LED-rated) to avoid flicker and buzz.

• Dedicated Circuit

  A circuit serving one appliance only (e.g., range, dryer, microwave, EV charger). Required by code for many large or motor loads.

• Drain-Waste-Vent (DWV)

  The system carrying waste out and venting the drains so traps hold their seal. The hardest part to relocate in a remodel.

• Damper

  An adjustable plate in a duct that balances or shuts off airflow to a zone or branch.

• Dual-Fuel / Hybrid System

  A heat pump paired with a gas furnace that switches to gas in extreme cold for the most cost-effective heating across the season.

• CPVC

  Chlorinated PVC supply pipe rated for hot and cold water; an alternative to copper/PEX in some regions.

• 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.

• Copper Pipe

  Durable, long-proven supply piping (types L/M). More costly and labor-intensive than PEX; still specified where preferred or required.