HVAC contractors in St Marys, Ontario

Name: HVAC contractor
Brand: HomeStars
SKU: hvac-contractor
Rating: 4.3 (7 reviews)

Planning an HVAC project doesn’t have to be complicated. Post the details of your heating or cooling needs on HomeStars, and we’ll match you with HVAC contractors and companies in St Marys, Ontario. Explore their previous projects, browse real reviews, compare quotes, and hire the pro who’s right for your home.

What is your job?

Find the right pros for your job

Some of our top rated hvac contractors in St Marys, Ontario

45 Results

Sort by:

Handyman Services
Rating: 5 out of 5
HVAC contractor in St Marys, Ontario
Hi there my name is niko i identify as a handyman with a plumbing background household appliance insulation and repairs. Always friendly and reasonable
Get in touch
Latest review:
Replace or maintain grout- 28 Oct 2025
Radio was a very hard worker and very thorough. He had to remove outdoor tiles and clean them and regrout them. Job was excellent. He also cleans up after himself.
Bhavani Electric
Rating: 3.7 out of 5
HVAC contractor in St Marys, Ontario
I am an experienced electrical technician specializing in troubleshooting and diagnosing electrical issues in residential, commercial, and industrial settings. I provide safe, reliable, and code-compliant electrical solutions with attention to detail and quality workmanship. My services include electrical troubleshooting, panel upgrades, lighting installation, outlet and switch repairs, and EV charger installations including Tesla chargers. I focus on accurate diagnosis, efficient repairs, and customer satisfaction. Reliable, professional, and committed to getting the job done right the first time.
Get in touch
Latest review:
Small electrical jobs- 30 Apr 2026
Nik repaired my original Tiffany pendant light, which had been blowing bulbs and now wouldn’t turn on. I recommend him entirely: professional, knowledgeable, (He knew immediately that my Tiffany was an original.) competent, friendly. . . are just a few of the adjectives that describe him. I have already hired him again, this time to replace two dimmers, which are causing light bulbs to flicker. Nik has become my “Go To” person for all things electrical. He should have a higher rating!
Perfect Temperature HVAC Services
Rating: 4.2 out of 5
HVAC contractor in St Marys, Ontario
I am an experienced HVAC technician I have been installing and servicing HVAC equipment for more than 4 years now. I am certified and insured.
Get in touch
Latest review:
Install or replace ventilation system- 15 Jun 2026
Marked my wall with permanent black marker and then drilled the hole improperly and restarted leaving a horrible ugly mark on my wall. I messaged them and they gave an excuse but no offer to fix it. NOT A PROFESSIONAL AND THEY DON'T KNOW WHAT THEY ARE DOING.
Lockie Home Services
Rating: 5 out of 5
HVAC contractor in St Marys, Ontario
Welcome to Lockie Home Services. A Red Seal Certified, dependable business offering home service repair and property maintenance solutions for homeowners/small businesses. Specializing in small repairs, installations, drywall patching, painting, furniture assembly, fixture replacement, seasonal maintenance, and general home improvements. Dedicated to quality workmanship, honest pricing, and reliable service that helps keep your home safe, functional, and looking its best.
Get in touch
Zak Tiles
Rating: 5 out of 5
HVAC contractor in St Marys, Ontario
Welcome to Zak Tiles, your premier tile and stone contractor in London, Ontario! At Zak Tiles, we bring artistry to life through our expert tile and stone installation services. With a passion for precision and an eye for design, we transform spaces into stunning masterpieces that reflect your unique style. We are dedicated to delivering top-notch craftsmanship, ensuring every tile and stone is meticulously placed to perfection. Whether you're looking to revamp your kitchen, bathroom, or any other living space, Zak Tiles is your trusted partner for quality installations that stand the test of time. We are highly trained and experienced artisans who take pride in their work, delivering flawless installations with attention to detail. We understand that each project is unique. Our team works closely with you to create custom design solutions that perfectly complement your vision and lifestyle. We value your time, and our commitment to punctuality ensures that your project is completed on schedule without compromising quality. Discover the difference Zak Tiles can make in elevating the aesthetics of your space. Contact us today for a consultation, and let's turn your vision into reality! 226 224 6730
Get in touch
Latest review:
Repair floor- 22 May 2025
Quick response. Arrived quickly. Polite. Repaired my damaged vinyl floor quickly and was able to adjust when my replacement planks were being difficult. Cleaned up the work area before leaving.
Hawana HVAC Solutions
Rating: 5 out of 5
HVAC contractor in St Marys, Ontario
Hawana HVAC Solutions – Trusted Heating & Cooling Experts in London, Ontario At Hawana HVAC Solutions, we are a family-owned and operated HVAC company with over 20 years of experience serving London, Ontario and surrounding areas. Our licensed and certified technicians are committed to delivering top-quality workmanship and outstanding customer satisfaction. Our specialties include: Furnace installation, repair, and maintenance Air conditioning services, including ductless mini-split systems Heat pump installation and servicing Tankless and traditional water heater solutions Indoor air quality improvements with HEPA filters, UVC purifiers, Humidifier and ERV/HRV systems Gas line installation, inspection, and repair We are passionate about energy efficiency, offering smart thermostat installations as we are Nest Pro and eco-friendly HVAC upgrades to help you save on energy bills. With 24/7 emergency HVAC services, we ensure year-round comfort for your home or business. Licensed by the Technical Standards & Safety Authority (TSSA), Hawana HVAC Solutions is your trusted choice for reliable and innovative climate control.
Get in touch
Latest review:
I've been a loyal customer of Hawana HVAC Solutions for several years now, and I can't recommend them enough! Their exceptional service and expertise have consistently impressed me. In the past, they promptly repaired my furnace and AC whenever I needed assistance. Recently, I decided to upgrade my home comfort system, and Hawana exceeded my expectations. They installed a high-efficiency furnace, a brand-new AC unit, tankless water heaters, a UVC air purifier, a HEPA filter, nest smart thermostats 3rd generation and even a humidifier. The installation process was seamless, and their attention to detail was remarkable. What truly sets them apart is their commitment to educating their customers. They took the time to explain ducted heat-pump installations and the workings of the hybrid system, even though I wasn't interested at the time due to the rebate program being discontinued. Abdullah, the owner and HVAC specialist, leads a team of professionals who are courteous, knowledgeable, and dedicated to customer satisfaction. Their energy-efficient solutions have significantly improved my home's comfort while saving me money. If you're looking for top-notch HVAC services in London, look no further than Hawana HVAC Solutions. Trust me, you won't be disappointed! Thank you, Abdullah, for your outstanding work . Michael Thomas
ProTech Plumbing and Building Services
Rating: 4.9 out of 5
HVAC contractor in St Marys, Ontario
Best of Awards 2026
At ProTech, we’re a family-owned and operated symbol of excellence in Plumbing and Building Services. Specializing in Residential, Multi-unit Residential, and Commercial projects, we bring unparalleled craftsmanship and dedication to every project, regardless of the size. Rooted in the Tri-Cities, our family legacy is built on values that prioritizes quality, transparency, and personal connection. Our skilled professionals, an extension of our family, are driven by passion for exceeding expectation.
Get in touch
Latest review:
Install or replace water supply and drainage- 29 Jun 2026
Great work - start to finish. Fast and nice people. Professional. Strongly recommend.
Green air HVAC
No reviews yet
HVAC contractor in St Marys, Ontario
At Green Air HVAC we are committed to delivering reliable, high-quality services that meet the needs of our valued customers. Our mission is simple: to provide solutions that make your life easier, more efficient, and more enjoyable. We stand out for: • Professional Excellence – delivering services with consistency and care. • Customer Commitment – putting your satisfaction at the heart of everything we do.
Get in touch
Parth Prajapati
No reviews yet
HVAC contractor in St Marys, Ontario
Hi there, My name is Parth, and I’m an electrician with diverse work experience. I’ve worked in various fields, including home renovation and troubleshooting. I’m also happy to help with any handyman tasks you might need. Please feel free to contact me if you need my services.
Get in touch
Kdeep Singh
New on HomeStars
HVAC contractor in St Marys, Ontario
BrownBoyBuilds | Carpentry & Home Renovations At BrownBoyBuilds, quality craftsmanship and reliable service come first. With years of hands-on experience in carpentry, framing, drywall, demolition, and home renovations, I help homeowners bring their projects to life with attention to detail and pride in every job. Experience I have worked on a variety of residential projects, including framing, drywall installation and repairs, painting, flooring, trim work, decks, fences, and general home improvements. My experience on active construction sites has taught me the importance of precision, safety, and getting the job done right. Service Area Based in Ontario, BrownBoyBuilds proudly serves: - Sarnia - London - Chatham - Strathroy - Woodstock - Surrounding communities Travel is available for the right project. Special Skills - Carpentry & framing - Drywall installation & repairs - Demolition & renovation work - Interior & exterior painting - Flooring installation (laminate, vinyl) - Trim, baseboards & door installation - Decks & fences -Grid Ceilings - General repairs & home maintenance Why Homeowners Choose BrownBoyBuilds I believe every home deserves quality work, honest communication, and dependable service.
Get in touch
Get Low Floors
No reviews yet
HVAC contractor in St Marys, Ontario
Get Low Floors can help you with your installation and sales of carpet, luxury vinyl plank, vinyl tiles, laminate floor, tile backsplash, floor tiles and some hardwood installs or replace damaged areas., repairs also an option. Install carpet or vinyl plank on stairs, repair wall or floor tiles. Free quotes in London and its surrounding cities. They’re at your disposal to listen and assist you in all your projects. Get in touch with Get Low Floors now to discuss your needs and arrange a quote. Been in the flooring business for over 30 years. Thanks for looking
Get in touch
Desna Mechanical LTD
No reviews yet
HVAC contractor in St Marys, Ontario
Desna Mechanical Ltd. is a trusted heating and cooling company specializing in HVAC installation, repair, and maintenance for residential and commercial properties. With a focus on efficiency, reliability, and innovation, we provide tailored solutions to maximize comfort and energy savings. Our certified professionals deliver expert craftsmanship in furnace installations, air conditioning services, and system upgrades. At Desna Mechanical, we prioritize integrity, transparency, and customer satisfaction, ensuring top-quality service every time. For dependable HVAC solutions, trust Desna Mechanical Ltd. – Dynamic Engineering Solutions & Novel Alternatives.
Get in touch
Home Service Professionals
Rating: 4.3 out of 5
HVAC contractor in St Marys, Ontario
At Home Service Professionals we are committed to providing top quality service and products to our customers. We are a locally owned and operated business that has gradually expanded to serve South Western Ontario. We have three main divisions through which we offer our equipment and services. Our HVAC department carries high quality brands such as American Standard for Furnace and Air Conditioning units, along with other notable brands such as Navien for our Tankless Water Heaters. Our technicians can help you find out which options suit your individual needs the best as well as letting you know if you're eligible for any rebates. We at HSP pride ourselves on the work that our installers do, with each job being tailored to the customers specifications. Check the Installs page to see some of the work that has been completed. Our Water department carries products to solve just about any water quality issue we've come across. Issues such as taste, odour, hardness along with many other irritants and problems can be removed with the correct equipment. Our line of products include both self-contained drinking water units as well as whole home solutions. For municipal city water, well water and many other sources, our technicians can identify which equipment will help solve your water quality issues. Our Air department focuses on providing air quality products and services. These include ultraviolet light and Hepa filter units along with Duct & Dryer Vent Cleaning services. Our technicians will provide information on how dirty ducts can lead to inefficient heating and cooling throughout a home along with solutions to those issues. Check our booking page to see when we're available in your area.
Get in touch
Latest review:
Install or replace heating systems- 25 Nov 2024
Josh seemed very knowledgeable about what needed to be done --- replacing the condenser pump rather than cleaning it & was good at explaining everything. They came to fix very quickly & on-site service was efficient. He insisted on including charges on my invoice for duct cleaning work which I will probably get done at a later date in the coming year & wanted to mark that portion of the invoice "unpaid" or "balance owing". I said I didn't want that on the invoice as the work had not happened yet --- that I would call when I was ready to have that done. He was upset with me for having to re-write the invoice three times & said it was costing him money to keep re-writing them - maybe so I'd feel bad, I'm not sure. I still insisted that he remove unrequested, uncompleted services from my bill. Then he suggested that they would send me a "reminder" notice in the new year to get the duct cleaning done but I said I would call them if & when that time came. I do not like to feel pressured into having other services done & billed for those services prematurely. With that exception I had no complaints with the technician, the price, or the company & would still recommend them.
DUECK ELECTRIC LTD
Rating: 4.9 out of 5
HVAC contractor in St Marys, Ontario
Master Electrician with over 15 years experience. Electrical installation, replacement and repair.
Get in touch
Latest review:
Install or repair network wiring- 17 Dec 2025
Dan showed up without much notice . Very friendly . Seemed to know his stuff . Was able to answer any questions I had . Fixed my issue . Highly recommend
Vaughan Electric
No reviews yet
HVAC contractor in St Marys, Ontario
Im not interested in taking on any more leads.
Get in touch
Miller
No reviews yet
HVAC contractor in St Marys, Ontario
Im 62 iv been doing hvac since i was 15 i wrote gas at 15 have my own sheetmetal shop i love customers and great at both service and instalations
Get in touch

4.3

Top rated HVAC contractors

Our HVAC contractors in St Marys, Ontario, are rated 4.3 out of 5 based on 7 reviews from homeowners like you.

Quality screening

Easily find verified local pros. Just post your job to get quotes from pros near you across Canada.

What services are offered by HVAC contractors and companies in St Marys, Ontario?

HVAC contractors and companies in St Marys, Ontario provide a range of services to keep your indoor environment comfortable year-round.

Popular HVAC services in St Marys, Ontario include:

Fitting air cleaners and humidifiers to improve indoor air quality
Setting up a solar water heater to provide energy-efficient, sustainable hot water for your home or business
Repairing or replacing water heaters to ensure reliable hot water supply
Installing or servicing furnaces and heat pumps to ensure reliable heating during harsh winters
Upgrading or replacing air conditioning systems to keep indoor spaces cool, comfortable, and energy-efficient
Modernizing boilers to provide consistent heating and hot water while improving energy efficiency and system reliability

Searching for heating and air conditioning contractors in St Marys, Ontario? Save yourself time and by posting your project on HomeStars. Compare profiles and request quotes from your preferred St Marys, Ontario HVAC contractors and companies before making your final hiring decision.

What are the average costs of HVAC services in St Marys, Ontario?

When hiring HVAC services in St Marys, Ontario, prices vary depending on the type of system and the complexity of the installation or repair. Typical labour charges for furnace installations often run between $75 and $150 per hour, with most installations requiring 8 to 16 hours of work.

For a full heating/cooling system installation, homeowners generally pay between $4,000 and $7,500 for standard systems.

For common HVAC jobs in St Marys, Ontario, expect to pay:

**Central air conditioning installation costs: $3,000 to $6,500
**Air conditioning repair or maintenance: $150 to $1,500 per job
**Furnace or boiler installation/replacement costs: $4,000 to $7,500 per system
**Water heater installation or replacement: $1,500 to $3,500 per unit
**Routine HVAC system service call cost: $100 to $250 per visit

Find heating and cooling contractors in St Marys, Ontario on HomeStars

Finding HVAC contractors and companies in St Marys, Ontario doesn’t have to be stressful. Just post your project on HomeStars’ free and easy to use platform, and we’ll match you with pros ready to help.

How to hire St Marys, Ontario heating and air conditioning contractors on HomeStars:

Start by posting your project. Provide a clear description of your heating and cooling requirements and include photos to get precise quotes.
Compare profiles, browse previous work history and get quotes from HVAC contractors and companies in St Marys, Ontario.
Connect with multiple HVAC contractors in St Marys, Ontario to discuss your project, request quotes and ask any questions.
Hire the right pro to get the job done and leave a review based on your experience. Our review system ensures that pros are rewarded for good work and held accountable for any problems.

All of the HVAC contractors and companies in St Marys, Ontario who register with our platform undergo verification, including ID and company checks, so you can hire with confidence and peace of mind through HomeStars.

What to ask an St Marys, Ontario HVAC contractor before hiring?

Looking for a HVAC contractor in St Marys, Ontario? These questions can help you find a pro who’s the right fit for your heating, cooling, or ventilation project.

Are you licensed and insured in St Marys, Ontario?

Most HVAC work, especially gas, boiler, or high-capacity heating systems, requires pros to be licensed. Ask your preferred HVAC contractors in St Marys, Ontario for proof of licences and liability insurance to protect yourself in case of accidents or damage.

Will you handle permits and inspections if required?

Some HVAC installations or replacements, like gas-fired boilers, require municipal permits and inspections. Confirm the St Marys, Ontario HVAC company will handle this so your installation is compliant.

What types of HVAC systems do you work on?

Some St Marys, Ontario HVAC contractors specialize in furnaces, boilers, air conditioning, or heat pumps. Confirm they have experience with your system type to ensure proper installation or repair.

Do you offer maintenance or service plans?

Regular maintenance improves efficiency and extends system life. Check if your St Marys, Ontario HVAC contractor offers annual inspections, filter changes, or seasonal tune-ups as part of a service plan.

How do you handle unexpected issues during installation?

Older homes or complex systems can reveal surprises, like outdated wiring or plumbing conflicts. Ask your heating and cooling contractor in St Marys, Ontario how they communicate additional costs or changes to avoid surprises.

FAQ: Common questions about HVAC in St Marys, Ontario

Can HVAC companies in St Marys, Ontario remove old equipment?

Many St Marys, Ontario HVAC companies include removal and disposal of old units as part of the installation service, though it’s best to confirm in advance.

How long do HVAC installations by St Marys, Ontario HVAC contractors typically take?

Installation times vary depending on system type and home size. Furnaces or air conditioning systems usually take 1 to 2 days, while more complex setups may take longer.

Do heating and cooling contractors in St Marys, Ontario offer energy audits?

Some St Marys, Ontario HVAC contractors provide home energy assessments to identify ways to improve efficiency and reduce heating or cooling costs.

How do St Marys, Ontario HVAC contractors handle refrigerant disposal?

St Marys, Ontario HVAC contractors follow Canadian environmental regulations to safely recover, recycle, or dispose of refrigerants during air conditioning or heat pump servicing.