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Furnace maintenance: when to service it and why it saves money

Your furnace works hardest exactly when a breakdown hurts most. An annual tune-up is one of the highest-return home services there is — it lowers your bills, extends the furnace's life, and keeps you warm when it's -20°C outside. Here's what you need to know.

When to service your furnace

Once a year, in early fall, before peak demand. Booking early means better availability and standard rates instead of an emergency call in January.

What a tune-up includes

A certified tech cleans and inspects the burners, checks the heat exchanger, tests the ignition and safety controls, replaces the filter, and confirms it's running safely and efficiently.

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The money it saves

A clean, tuned furnace uses less fuel, so you save on heating bills all winter. More importantly, a $150 tune-up routinely catches a $200 part before it becomes a $6,000 emergency replacement — and keeps your warranty valid.

Warning signs to book now

Short-cycling, weak or uneven heat, rising bills, strange smells or noises, or a yellow (not blue) burner flame all mean book a pro promptly — some are safety issues.

Don't forget the CO detector

A cracked heat exchanger can leak carbon monoxide. Test detectors every fall — it's the cheapest life-safety check you'll do.

Book a certified HVAC pro on Genie

Genie matches you with a licensed, insured HVAC technician at an upfront price, holds payment until the job's done right, and can remind you every fall so you never skip it.

FAQ

How often should a furnace be serviced?

Once a year, ideally in early fall before the heating season. Genie can match a certified HVAC pro and remind you annually.

Does a furnace tune-up really save money?

Yes — it lowers heating bills through efficiency and prevents far more expensive emergency breakdowns and premature replacement.

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