Furnace Repair in Barrie, Orillia & Simcoe County
24/7 emergency furnace repair by licensed technicians. All brands serviced, upfront pricing, no surprises.
Good · Better · Best
Furnaces We Install
Real models we install across the GTA, Barrie & Simcoe County — pick the tier that fits, and we confirm the exact unit at your free quote. No pressure, no upselling.
Gas Furnaces
Every furnace we install is high-efficiency and sealed-combustion. The real choice is how evenly and quietly it heats — a single-stage unit runs full-blast or off, while a two-stage unit with a variable-speed blower holds a steadier temperature and runs quieter.
ENERGY STAR 96% AFUE with a power-saving constant-torque blower — real fuel savings without the cost of a fully modulating system. The right fit for most Toronto, Barrie & Simcoe homes.
- Efficiency
- Up to 96% AFUE
- Staging
- Single-stage
- Blower
- Power Saver constant-torque
- Certification
- ENERGY STAR qualified
93% Single-Stage Furnace
Lennox ML193E
93%
AFUE
Dependable high-efficiency heat at the best price.
96% Single-Stage Furnace
Lennox ML196E
96%
AFUE
The high-efficiency sweet spot for most homes.
97% Two-Stage Variable-Speed Furnace
Lennox EL297V
97%
AFUE
Quiet, even, two-stage comfort — the premium pick.
We size every system to your home (CSA F280) and confirm the exact model at your free in-home quote.
A furnace usually picks the coldest week to quit. When yours does, what you want is someone who turns up, finds the real fault, and tells you the price before touching anything. Relica Comforts repairs furnaces across the Greater Toronto Area to Barrie, 24 hours a day, 7 days a week — including holidays and the middle of the night, which is often exactly when a no-heat call comes in.
Our licensed technicians carry the common parts — igniters, flame sensors, capacitors, control boards — so most repairs are finished in a single visit. We work on every major brand: Lennox, Carrier, Goodman, Trane, Rheem, York, Bryant, and the rest. The way we work is simple: diagnose the actual problem first, give you an upfront price, and only do the work once you have said yes. No work starts and no parts go in until you have approved the number.
That also means we will tell you when a repair is the wrong spend. If your furnace is old and the fix is a big one, we will say so and lay out the repair-versus-replace math plainly, rather than fixing something that is about to fail again. Every repair we do is backed by a warranty on parts and labour.
What's Actually Behind the Common Problems
Most furnace faults look alike from the hallway — it's cold, or it's loud, or it keeps stopping. The cause underneath is what decides whether it's a ten-minute fix or a real repair. Here is what each symptom usually points to.
No heat, or won't start at all
This is the call we get most in winter. The chain that has to work is thermostat, ignition, flame, and the safety controls that watch all of it. A dead thermostat battery or a tripped breaker stops it before anything else does. Past that, a modern furnace lights with a hot-surface igniter — a fragile element that cracks with age — and proves its own flame with a flame sensor that fouls over time. A failing gas valve or a control board will also leave you cold. Each one is a different part and a different price, so the diagnosis matters before anyone quotes a repair.
Short-cycling — on and off every couple of minutes
A furnace that fires, runs briefly, shuts off, and restarts is protecting itself, and it is hard on the parts every time it does it. The usual culprit is overheating from restricted airflow — most often a clogged filter — which trips the high-limit switch and cuts the burners. A dirty flame sensor causes it too, dropping the flame seconds after ignition. And a furnace that was oversized for the home will short-cycle by nature, heating fast and shutting off before it settles. We find which one it is rather than papering over it.
Weak airflow, or the furnace runs but the house won't warm up
If the burners are lit but barely any air reaches the vents, the problem is on the blower side — commonly a failing blower motor or its start capacitor, or once again a filter so clogged the fan can't pull through it. When a furnace runs and runs but never reaches the set temperature, it is usually that same airflow restriction, a furnace losing efficiency with age, or a unit that is simply undersized for the home it is heating.
Strange noises
The sound tells you a lot. A loud bang on start-up is usually delayed ignition — gas pooling for a moment before it catches — and is worth addressing promptly. A squeal or screech generally means a blower bearing or, on older furnaces, a worn belt. Rattling is often a loose panel or section of duct, but can be a part working loose inside. None of these settle down on their own, and the cheap version of each is far cheaper than what it becomes if left.
Pilot and ignition faults
Older furnaces use a standing pilot light; a flame that keeps going out, burns yellow instead of blue, or won't stay lit points to a thermocouple, a draft, or a gas-supply issue. Newer furnaces have no pilot at all — they rely on that hot-surface igniter and flame sensor, and an ignition fault there shows up as a furnace that tries, clicks, and fails to light.
A cracked heat exchanger — the serious one
This is the fault we treat differently from all the others. The heat exchanger is the metal wall that keeps combustion gases — including carbon monoxide, which you cannot smell — apart from the warm air blown through your house. A crack can let those gases into the air you breathe. On an older furnace this is a replace-the-unit call, not a repair: patching it is not safe. If we find one, we shut the furnace down and walk you through replacement honestly. Whatever the age of your furnace, a working carbon-monoxide detector on every level of the home is essential.
A Few Things You Can Safely Check First
Before you book anyone, there are a handful of harmless checks that catch the simplest no-heat causes. None of these involve opening up the furnace or touching gas or wiring — leave that to a technician. If you run through these and it still will not heat, that is the point to call us.
The thermostat
Set it to “heat,” a few degrees above the room temperature, with the fan on “auto.” If it takes batteries, swap them — a dying thermostat is a common false alarm.
The furnace switch
There's a switch that looks like a normal light switch on or beside the furnace. People flip it off by mistake while cleaning or storing things nearby. Make sure it's on.
The breaker
Check your electrical panel for a tripped breaker feeding the furnace and reset it once. If it trips again right away, stop and call — that's an electrical fault, not a reset.
The filter
A filter clogged solid can shut a furnace down on its safety limit. If yours is grey and packed, replace it — this alone fixes a surprising number of short-cycling and no-heat calls.
The condensate drain
High-efficiency furnaces drain water as they run. A blocked condensate line backs up and can trip a safety float, stopping the furnace. If you see water pooling at the base, that's the likely cause — and a good time to call.
Common Furnace Problems We Fix
Furnace Won't Turn On
Ignition failure, thermostat issues, tripped breakers, or faulty control boards — we diagnose and fix it.
Blowing Cold Air
Pilot light problems, gas valve issues, or a failing heat exchanger. We find the root cause fast.
Strange Noises
Banging, squealing, rattling, or humming from your furnace usually means a worn part needs attention.
Short Cycling
Your furnace turning on and off repeatedly wastes energy and often signals an overheating issue or dirty filter.
Pilot Light Issues
Flickering, yellow, or frequently going out — pilot light problems can be a safety concern.
Thermostat Problems
Inaccurate readings, unresponsive controls, or inconsistent temperatures throughout your home.
Frequent Cycling
Short runs followed by long pauses mean your furnace is working harder than it should and costing you money.
High Energy Bills
A sudden spike in heating costs usually means your furnace efficiency has dropped and needs servicing.
Our Furnace Repair Process
Call or Book Online
Reach us 24/7 by phone or through our contact form. We respond fast — even on weekends and holidays.
Diagnosis & Upfront Quote
A licensed technician arrives, diagnoses the issue, and gives you a clear price before any work starts.
Repair with Warranty
We complete the repair using quality parts, test the system thoroughly, and back it with a warranty.
Furnace Repair — Real Work
Pricing, and When a Repair Isn't Worth It
An unexpected furnace repair is stressful enough without wondering what it's going to cost. So we keep it simple: a flat diagnostic fee gets a licensed technician to your door to find the real fault, and you get an upfront price before any repair begins. We never start work without your sign-off on the number.
Common furnace repairs in the Toronto area run from roughly $150 to $500+, depending on the part and the labour. Bigger jobs — a control board, a blower motor, a heat exchanger — sit higher, and on those we slow down and lay out the choice honestly rather than just quoting the fix.
That choice is this: most gas furnaces last about 15 to 20 years. Inside that window, a one-off repair on a sound furnace is almost always the right call, and that's what we'll recommend. But when a single repair starts approaching roughly half the price of a new furnace on a unit that's already a decade or more old, the money is better put toward a new system than poured into the old one. A cracked heat exchanger on an older furnace is its own answer — that's a replacement on safety grounds, not a repair.
If you do reach that point, it's also the natural moment to weigh a heat pump or a dual-fuel setup instead of a like-for-like swap. We won't talk you into a replacement when a repair will do — but when the repair genuinely isn't worth it, we'll tell you that too. See our furnace installation page for how that conversation goes.
Serving 40+ Communities Across Ontario
Need a new furnace instead? See our furnace installation services. Also check out our plumbing repair and AC repair services.
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Why Choose Relica Comforts?
- Licensed & insured technicians
- Upfront pricing — no surprises
- 24/7 emergency service
- Free estimates on all installations
- 5.0 stars on Google
Frequently Asked Questions
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Call us anytime for emergency HVAC and plumbing service across Barrie, Orillia, and Simcoe County.