Skip to Main Content Skip to Footer Content

Furnace Repair and Replacement in Duncan, BC

When Cowichan Valley Winters Push Old Furnaces Past Their Limit

When your furnace short-cycles or won't fire at all, cold mornings in Duncan turn miserable fast. Our Duncan HVAC team diagnoses ignition failures, cracked heat exchangers, and blower motor faults in a single visit, then guides you through repair or replacement options. We service Trane, Carrier, and Lennox gas furnaces installed throughout the Cowichan Valley. Don't wait for a full shutdown during a cold snap, since parts availability tightens once temperatures drop. Our trucks carry common igniters, flame sensors, and control boards, so most repairs finish in one visit.

Furnace Repair and Replacement in Duncan, BC
When Cowichan Valley Winters Push Old Furnaces Past Their Limit
Aire Serv technician kneeling in front of an air conditioning unit taking tools out of their bag.

The Aire Serv Advantage

From tune-ups and maintenance to heater repair and air conditioning replacement, we provide services that keep the air you breathe clean and keep your home or business at the perfect temperature.

24/7 Customer Service

Call for emergency service or schedule an appointment online.

What Our Duncan Furnace Repair Visit Involves

Our Victoria HVAC specialists start every furnace repair call with a full combustion analysis before touching the burners. That means checking flue gas temperature, carbon monoxide output, and static pressure across the coil. A cracked heat exchanger gets flagged right away since it's a safety hazard under BC's gas code, never a repair candidate. Weak igniters, failed flame sensors, and stuck gas valves cause most no-heat calls we see in Duncan homes. We test each component with a multimeter to pinpoint the exact failure.

Furnace replacement makes more sense once a unit passes 18 to 20 years old or needs a second major repair within two winters. Salt air from the waterways in Cowichan Valley accelerates corrosion on heat exchangers and flue pipes compared with drier interior regions, so units here often wear out before their rated lifespan. We size replacement furnaces to meet CSA B149.1 gas code requirements and your home's actual heat loss, not a generic square-footage chart. High-efficiency condensing models recover exhaust heat that standard furnaces waste. This pays off through Vancouver Island winters that aren't brutally cold but stay damp and long.

Choose Aire Serv: Local Experience Backs Every Duncan Furnace Call

Aire Serv of Greater Victoria is Canadian-owned and operated, and every repair carries the Neighbourly Done Right Promise®, so a callback for the same issue gets fixed at no additional cost. We answer emergency no-heat calls around the clock. This matters when a furnace quits on a Sunday night in January. Beyond furnace work, our crews handle heat pump installation, ductless system service, and indoor air quality upgrades for homes across Duncan and the wider Cowichan region. We show up in the same trucks that carry your parts, quote work upfront before starting, and don't add overtime rates for evening or weekend calls. If your furnace is acting up or you're planning ahead for a replacement, schedule an appointment, and we'll walk the system with you before recommending anything.

Frequently Asked Questions About Furnace Repair and Replacement in Duncan

  • Most furnace repairs in Duncan finish within a single visit lasting one to two hours once we've diagnosed the issue. Igniters, flame sensors, and control boards are common stock items on our trucks, so we rarely need a return trip for those parts. Repairs involving a special-order component, such as a discontinued gas valve on an older unit, might take two to three days while we source the part. We'll always tell you the expected timeline before we start work, not after.

Let Us Call You

Aire Serv, a Neighbourly company, on its own behalf and on behalf of its affiliates and franchisees requests your consent to send promotional and other electronic messages to you concerning products and services they believe are of interest to you. By checking this box, you agree to receive these messages. You can unsubscribe at any time.