10 Common Furnace Myths Vancouver Homeowners Believe
Published: July 23, 2026 — BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning — Greater Vancouver, BC
Myth: Bigger Furnace Is Better
An oversized furnace short-cycles — it heats your home too quickly, shuts off, and repeats. This wastes energy, creates uneven temperatures, and wears out components faster. A properly sized furnace runs for longer cycles at steady state, providing consistent comfort and better efficiency.
Myth: Closing Vents Saves Energy
Closing vents in unused rooms increases duct pressure, which can cause duct leaks, reduce furnace efficiency, and potentially damage the heat exchanger. Keep all vents open for proper airflow. Use zoning or thermostat adjustments to control temperature in unused areas.
Myth: Furnace Maintenance Is Optional
Skipping annual maintenance is the most expensive thing you can do. A well-maintained furnace runs 10-20% more efficiently, lasts 3-5 years longer, and is less likely to fail during a cold snap. Annual service pays for itself in energy savings alone.