Furnace Repair and Installation
Stay warm through every Ontario winter with expert furnace repair and installation, from emergency no-heat calls to routine tune-ups that keep your system safe and efficient.
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Licensed, Insured & Local
St. Thomas HVAC Pros, Expert Heating & Cooling Repair in St. Thomas, ON
At St. Thomas HVAC Pros, we treat your home like our own. Serving St. Thomas, Ontario and Middlesex County, we deliver honest, efficient, and dependable HVAC solutions for year-round comfort.
- 24/7 HVAC Service
- FinanceIt Financing
- 100% Satisfaction Guaranteed
- Licensed & Insured
24/7Emergency service
Licensed& fully insured
FreeNo-obligation quotes
Guaranteed100% satisfaction
About Your Local Team
Real People Keeping Ontario Homes Comfortable
At St. Thomas HVAC Pros, we understand that a broken air conditioner or failing furnace is more than an inconvenience, it's a disruption to your life.
Anyone can fix a furnace once. Earning the next call is the real work. We keep detailed service records for every home we visit, remember what we found last time, and plan maintenance around your system instead of a generic schedule. That is how neighbours become long-term customers.
Backed by our 100% satisfaction guarantee on every job.
Full Service, One Team
Repairs, Replacements, and Maintenance for Every System in Your House
Furnaces, air conditioners, heat pumps, ductless units, thermostats, ductwork: if it heats, cools, or moves air, we service it. No handoffs to other trades, no runaround. One company carries the job from first inspection to final check.
New Air Conditioners, Installed Right
If your old unit limps through another July, replacement beats throwing money at repairs. We size and install properly matched systems for Ontario homes, with fast, free quotes up front.
Learn moreCold-Climate Heat Pumps for Ontario
Modern cold-climate heat pumps still deliver heat at minus 25 Celsius. Paired with your furnace as dual fuel, they shrink winter bills, and our crews install them fast.
Learn moreCleaner Air for St. Thomas Families
Constant sneezing at home, dusty surfaces an hour after cleaning, weak airflow upstairs? Sealed St. Thomas homes recirculate whatever sits in the ducts, so we remove it at the source fast.
Learn moreThermostat Installation Done Properly
Wrong wiring can short a control board and void warranties. Our licensed technicians match the right thermostat to your system and wire it correctly the first time.
Learn moreMulti-Zone Ductless for St. Thomas Homes
One outdoor unit, up to four indoor heads, independent temperature control in every zone. We design the layout around how your St. Thomas household lives and install it quickly.
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How We Work
Why Choose St. Thomas HVAC Pros?
Three habits guide every job: assess honestly, work cleanly, and stay reachable long after we leave.
Your Options, Laid Out Clearly
Every visit begins with a full system inspection, not a quick glance. You see what we find, understand why it matters, and approve the plan before a single tool comes out of the van.
Skilled Hands, Protected Floors
Installations follow manufacturer specifications and local code, from gas connections to condensate drainage. Each job is pressure-tested, started up, and commissioned in front of you so you can see the system working before we pack up.
Still Here Next Season
Our relationship does not end when the job is done. Repair and maintenance service continues for the life of your equipment, keeping everything running at peak efficiency through freeze and thaw alike.
Testimonials
What St. Thomas Homeowners Are Saying
Every review below started with a phone call from a house just like yours.
“St. Thomas HVAC Pros handled our air conditioning issue quickly and explained everything clearly. Great service in st thomas when we needed help.”
SL
Sandra L.St. Thomas, ON
“Our furnace had a sudden breakdown, and they responded fast with professional repair. Very reliable hvac contractor.”
MT
Mark T.St. Thomas, ON
“They installed our new system and improved our airflow and comfort right away. Professional, knowledgeable, and easy to work with.”
JR
Jordyn R.Tillsonburg, ON
Comfort Care
Preventive Care, Scheduled Around Your Life
Well-maintained equipment breaks down less, runs more efficiently, and lasts longer. The plan builds that care in automatically: two thorough inspections a year, priority booking ahead of non-members, 15% off any repair along the way, and a running service log your future technician, or buyer, will thank you for.
Book Your Free Quote Today
Free quotes, straightforward answers, and technicians who respect your time and your home. Whether you know exactly what you need or only know something sounds wrong, start with a call.
From the Blog
Latest News & Home Comfort Tips
Practical advice to help you get the most from your heating and cooling system in St. Thomas's climate.
Home Comfort Tips
How Often Should You Service Your HVAC System in St. Thomas, Ontario?
St. Thomas's real seasons push your HVAC system hard. Here's how often you should service your furnace and AC, and why twice a year is the sweet spot.
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Home Comfort Tips
Signs Your Furnace Needs Repair Before a St. Thomas Winter
Don't wait for the coldest night of the year. Here are the most common warning signs your furnace needs repair before a St. Thomas winter sets in.
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Home Comfort Tips
Why Your Air Conditioner Struggles During Humid St. Thomas Summers
If your AC runs all day but your home still feels sticky, humidity is likely the culprit. Here's why, and what you can do about it.
Read article
FAQs
Good Questions From Homeowners
Answers to the questions St. Thomas homeowners ask us most, all in one place.
How quickly can I get furnace repair in St. Thomas, Ontario?
Our expert technicians provide fast, reliable furnace repair in St. Thomas and surrounding Middlesex County areas. We prioritize emergency service calls so your home heating is restored promptly, often the same day.
What types of AC repair services do you offer?
We offer comprehensive AC repair in St. Thomas, including diagnostics, component replacement, and maintenance for central air conditioning and ductless mini-split systems to meet your cooling needs.
How do I know if my heat pump needs repair or replacement?
Signs like uneven heating or cooling, unusual noises, or rising energy bills may indicate your heat pump needs service. Our team provides professional repair and installation for optimal year-round comfort.
Why is duct cleaning important for my home?
Dust and allergens reduce the efficiency of your heating and cooling system. Professional duct cleaning helps your HVAC system run better and improves the indoor air quality your family breathes.
Can you repair or replace my thermostat?
Yes. We provide thermostat repair and replacement in St. Thomas, including programmable and smart models, to optimize your heating and cooling performance and lower energy use.
What types of fireplaces can you install?
We install gas, electric, and wood-burning fireplaces, safely integrating them with your home heating system for warmth, ambiance, and code-compliant peace of mind.
Do you install ductless AC systems, and are they energy-efficient?
Absolutely. Our ductless AC installations provide energy-efficient cooling and heating for precise comfort without the need for ductwork.
Are your technicians licensed and experienced?
Every technician on our team is fully licensed, insured, and trained to deliver professional service using proven repair techniques.
Do you serve areas outside of St. Thomas, Ontario?
Yes. We provide HVAC services throughout St. Thomas and nearby communities including London, Strathroy, Dorchester, Komoka, and across Middlesex County.
Do you offer 24/7 emergency service?
We do. Heating and cooling emergencies don't keep business hours, so neither do we, call us any time, day or night.
Service Area
Serving St. Thomas & Surrounding Communities
We provide fast, reliable hvac service throughout St. Thomas and Middlesex County. If you don't see your town listed, give us a call, chances are we cover it.