Combustion Venting (Water Heater)

Related terms

• Condensate Drain

  The line removing water the AC coil pulls from the air. Clogs cause overflow and water damage; a safety float switch is recommended.

• Combustion Air Code

  Requirements ensuring fuel appliances get enough air in confined spaces (e.g., a furnace closet). Tightening the envelope can trigger this.

• Condenser

  The outdoor unit that rejects heat removed from the house. Needs clearance and airflow; undersizing or dirty coils kill efficiency.

• Combustion Air

  Outside air a fuel-burning appliance needs to burn safely. Tightening a house without providing it can cause backdrafting and CO risk.

• Condensing Furnace

  A high-efficiency (90%+ AFUE) furnace that extracts extra heat from exhaust, producing acidic condensate that needs a drain and PVC venting.

• Cleanout

  A capped access fitting for snaking/clearing the drain line. Code requires them at intervals and direction changes.

• Conduit

  Protective tubing (EMT, PVC) for wiring in exposed, exterior, or damp locations and where code requires physical protection.

• Circuit Breaker

  An automatic switch that interrupts a circuit on overload or short, resettable unlike a fuse. The modern overcurrent device.