Furnace Repair or Replace Quiz

Furnace Repair or Replace? Burlington, ON

The right answer depends on age, repair type, and whether the cost ratio makes economic sense. A cracked heat exchanger is never a repair.
A failed igniter almost never warrants replacement. The quiz finds your answer.

🔧 Burlington Repair Costs

⚡ By Component

🔒 Free

Burlington Furnace Repair Costs — What’s Fair

Burlington diagnostic fees run $89–$145 for a standard service call — covering the technician’s travel and diagnostic time. Many Burlington contractors apply this toward the repair bill if you proceed the same day. Here’s what common repairs actually cost at Burlington-area rates.

Repair	Burlington Range	Typical Age	Repair Usually Worthwhile?
Diagnostic / Service Call	$89 – $145	Any	—
Igniter (hot surface)	$130 – $270	8–15 yrs	Yes — always
Flame Sensor Clean / Replace	$95 – $210	Any	Yes — always
Limit Switch	$135 – $275	Any (check filter first)	Usually yes
Draft Inducer Motor	$330 – $670	12–20 yrs	Depends on unit age
Blower Motor	$370 – $770	12–20 yrs	Depends on unit age
Control Board	$370 – $840	10–18 yrs	Depends on unit age
Gas Valve	$340 – $690	15–25 yrs	Use 50% rule
Heat Exchanger	$1,200 – $2,400	15–25 yrs	Usually replace instead

The Decision Framework Burlington Homeowners Should Use

There’s no single rule that covers every situation — but four filters together handle most of them.

1

The Age Filter — Where Burlington Furnaces Actually Land

Furnaces installed in Burlington in the late 1990s and early 2000s — a substantial portion of the replacement pipeline right now — are reaching 20–25 years. Under 8 years: repair almost anything except a heat exchanger crack. Regular furnace maintenance helps prevent major failures. 8–15 years: apply the cost ratio. Over 15 years: replacement is typically more economical for any repair exceeding $500, and often for less. The math shifts because remaining lifespan doesn’t justify large repairs that buy only a few additional years of service.

2

The 50% Cost Rule

If the repair cost exceeds 50% of a comparable new system’s installed cost, Review your furnace replacement options in Burlington before committing. In Burlington, a new 96% AFUE furnace installed runs $3,900–$6,200. The 50% threshold is therefore roughly $1,950–$3,100. A heat exchanger repair at $1,800 on a 15-year-old furnace approaches or crosses this threshold — replace. A blower motor at $550 on a 9-year-old furnace is well below it — repair.

3

The Repeat Repair Pattern

One large repair in 15 years is normal. Two large repairs in three years on the same aging furnace is a pattern. If you’ve already replaced the inducer motor and are now looking at a control board repair, it may be time to compare replacement economics on a 17-year-old unit, the heat exchanger failure is probably not far behind. At that point you’re funding a declining asset rather than maintaining a serviceable one.

4

The Heat Exchanger Override

A confirmed cracked heat exchanger is a replacement trigger regardless of furnace age or cost calculations. Carbon monoxide from the combustion side entering the supply air stream is a health and safety issue. Review Ontario’s carbon monoxide safety guidance. TSSA-licensed technicians in Ontario will shut the system down when this is confirmed. No financial analysis applies here. If you receive this diagnosis and want a second opinion, that’s entirely reasonable — but have a second TSSA-licensed contractor verify, not an unlicensed handyman.

🚨 These Situations Are Always Replace — No Exceptions

Confirmed cracked or failed heat exchanger:

Carbon monoxide risk — the system must be shut down and replaced, not patched

Any confirmed gas leak in the combustion or heat exchanger section:

TSSA-regulated safety issue; shut off at the gas meter and call for emergency service

20+ year old furnace needing any major component:

Heat exchanger, gas valve, blower motor, or control board — the remaining lifespan doesn’t justify the repair cost

Multiple major repairs in the past 3 years:

Components are failing together; the next repair is already in progress

Pre-1990 unit with any significant failure:

Parts availability, efficiency losses, and lifespan all make replacement the only rational choice

Frequently Asked Questions

A Burlington contractor told me my heat exchanger is cracked. How do I verify this?

Ask for photos, video, or combustion test results showing the crack. If evidence isn’t provided, get a second opinion from another TSSA-licensed Burlington contractor. Heat exchanger cracks on furnaces under 15 years old are uncommon and worth verifying before replacing the system.

My Burlington furnace is 14 years old and needs a $680 blower motor replacement. Repair or replace?

Usually repair. A $680 blower motor is well below the 50% replacement threshold. If this is the first major repair, the furnace may still have several years left. If multiple repairs have occurred recently, replacement may offer better long-term value.

What’s the fair market cost for a furnace diagnostic in Burlington?

Most Burlington furnace diagnostic fees range from $89–$145. Emergency visits typically cost more. Many contractors apply the diagnostic fee toward the repair if work is approved the same day.