Thermostat Services in Mississauga - Expert Installation, Repair, and Replacement

Stay comfortable year-round with expert thermostat services in Mississauga. We handle installation, repairs, and upgrades for all thermostat types.

A smart thermostat being adjusted by a person to optimize home heating and cooling efficiency
A person adjusting a smart thermostat using a mobile phone for remote temperature control

Smart Temperature Control

Your Trusted Experts for Thermostat Repairs and Upgrades In Mississauga

At HVAC Group, we provide expert thermostat services in Mississauga, including repairs, installations, and upgrades for smart, programmable, and manual systems. Our certified technicians ensure precise calibration, seamless HVAC integration, and energy-efficient solutions tailored to your comfort.

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5.0
Based on 216 reviews
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michael wickeler profile picturemichael wickeler
16:50 06 Aug 25
HVAC GROUP punctual and very efficient at their job. Figured out the problem quickly and fixed the Air conditioner.
Response from the owner 17:07 06 Aug 25
Thank you, Michael, for the great review! We’re glad we could quickly diagnose and repair the rooftop unit at your Etobicoke property. From clearing the clogged drain tube and drain plate to cleaning the dirty coil fins and fixing the A/C relay connection — our goal is always fast, reliable service. We appreciate your trust in HVAC GROUP for your rooftop repair needs in Etobicoke. Don’t hesitate to reach out anytime you need us!
Erica Larry profile pictureErica Larry
22:45 01 Aug 25
Amazing service from Yuri! We will be using you again in the near future. Thank you again.
Response from the owner 23:14 01 Aug 25
Thank you so much for the 5-star review, Erica! We’re glad we could help with your A/C not cooling at your home on Ferndale Ave in Toronto. Our team at HVAC-GROUP quickly cleared the blocked furnace room drain and recharged your A/C unit with the proper level of R410A refrigerant for efficient cooling. Your comfort is our priority. If you ever need HVAC service in Toronto again, we’re just a call away!
Max Peters profile pictureMax Peters
15:47 31 Jul 25
Yuri and team quickly diagnosed my A/C issue and had the system back and running, with a very quick response time. Would recommend to anyone.
Response from the owner 16:19 31 Jul 25
Thank you Max so much for your kind words and 5-star review! We’re glad we could help get your AC back up and running quickly. Replacing the failed start/run capacitor was a simple fix, and we’re always happy to provide fast, reliable air conditioning repair service in the Etobicoke area. If you or anyone you know ever needs HVAC service in Etobicoke or the surrounding areas, HVAC Group is here to help!
Dave Neeb profile pictureDave Neeb
16:03 30 Jul 25
Excellent and thorough, great pricing. Thanks again.
Response from the owner 17:28 30 Jul 25
Thank you, David! We’re glad we could help get your AC up and running again. We appreciate your kind words about our service and pricing—it means a lot. If you ever need anything in the future, don’t hesitate to reach out. Stay cool!
John Hamilton profile pictureJohn Hamilton
19:58 25 Jul 25
The HVAC Group did a fantastic job restoring our broken AC . Quality professional workmanship at a fair price .We will definitely call them back next time .
Response from the owner 20:48 25 Jul 25
Thank you, John, for the 5-star review! We’re glad we could help with your AC repair and get your system back up and running. It’s great to hear you appreciated the quality workmanship and fair pricing. We look forward to helping you again whenever you need us! – HVAC Group
Katie Ogiba profile pictureKatie Ogiba
01:17 25 Jun 25
HVAC Group came recommended by a friend when our AC stopped working on a 38 degree day. We had called other services and either couldn't get through or everyone was booked. When I spoke to Yiri he said it was so busy they were booked until next week (which I expected as every other place said the same thing). But he stayed on the phone to ask a few questions about the unit. He was kind, and you can just tell when someone actually cares - he didn't have to talk me through the possible issues etc. He ended up sending someone out that evening who fixed it within 15 minutes. We are so appreciated of the service- both the actual work done and the customer care. Highly recommend. Thank you to both Yiris!
Response from the owner 01:59 25 Jun 25
Thank you, Katie, for taking the time to leave us a 5-star review!We’re glad we could help with your AC not cooling issue — it really means a lot to us.At HVAC Group, we’re always happy to assist both returning and new customers with air conditioning repairs, new AC installations, or furnace service during the heating season. Don’t hesitate to reach out if you ever need help again.Thanks for trusting us!— HVAC Group
Andre profile pictureAndre
02:52 19 Jun 25
Great service - fast, knowledgeable, thoughtful, very professional! Helped me well and fast!
Response from the owner 11:41 19 Jun 25
Thank you, Andre, for taking the time to leave a review! We truly appreciate your support. Don’t hesitate to reach out if you ever need air conditioning or furnace repair in the future — we’re always here to help!
HVAC Group responded quickly and had my noisy air conditioner fixed within a day. Their professionalism and customer-first approach really stood out. They go above and beyond—highly recommended!
Response from the owner 03:37 11 Jun 25
Thank you for the great review! We’re glad we could help with your noisy air conditioner so quickly. When you contacted us about your Lennox AC making unusual noise, our technician arrived the same day and found the outdoor condenser was clogged and the fan motor was extremely noisy. Since the AC parts warranty was still valid, we replaced the faulty motor and thoroughly cleaned the unit to restore quiet and efficient operation.We appreciate you choosing HVAC Group for your local AC repair in Mississauga. Your comfort is our priority!
Daniel Liu profile pictureDaniel Liu
19:04 04 Jun 25
HVAC group has been absolutely fantastic to help us replace our air conditioner. From diagnosing to replacement took only 2 days (since the replacement unit was in stock). This is especially appreciated as the weather was getting hot fast and I have a newborn baby that cries in the heat. Yura is extremely knowledgeable and Yuriy installed the unit professionally with no interruption and minimal noise to our house’s activities. Thank you for your help! HVAC group comes highly recommended and I’ll be reaching out to them for routine maintenance!
Response from the owner 22:00 04 Jun 25
Thank you so much for the wonderful 5-star review! We’re thrilled to hear you were happy with your Lennox AC installation experience. We understand how important a cool home is—especially with a newborn—and we’re glad we could respond quickly and get everything running smoothly in just two days. Yura and Yuriy truly appreciate your kind words. We’re always here when you need us, and we look forward to helping with your future maintenance needs. Thanks again for trusting HVAC Group!
Pranav Kumar profile picturePranav Kumar
22:15 01 Jun 25
Got my thermostat changed and replaced the AC too. The price point is completely trust worthy and the service highly professional!
Response from the owner 22:57 01 Jun 25
Hi Pranav,Thank you so much for the great review! We’re glad you’re happy with the Lennox AC installation and thermostat replacement. It means a lot to hear that you found our pricing trustworthy and our service professional. We truly appreciate your support and look forward to helping you again in the future!— HVAC Group
Olena M profile pictureOlena M
21:03 01 Apr 24
Amazing service, quick and clean replacement of the old water tank, we definitely recommend this team to anyone who would need installation or replacement
Daniel Campana profile pictureDaniel Campana
16:25 23 Mar 24
I had an issue with my Rheem furnace not heating, so I reached out to HVAC-group for assistance. The technician was quick to identify the problem as a faulty flame sensor. The service was prompt, efficient, and ultimately effective. I'm very pleased with their work and would highly recommend their services to anyone facing HVAC issues.
lakhbir phull profile picturelakhbir phull
16:34 10 Mar 24
Excellent service, immediate response, reasonable price, very happy with their services.
Tina Obersnel profile pictureTina Obersnel
12:18 29 Jan 24
I highly recommend calling HVAC-GROUP for your maintenance and service needs. Yuriy was great. Quick to respond and resolve the issue. I am very happy with the outcome.
VIKKY profile pictureVIKKY
19:29 17 Jan 24
I was having problem with a tankless water heater here in edmonton !
I just googled about it and i found his contact number , and i got my problem solved , because i called him and he actually explained everything very clearly and amazingly! Thank you so much
My tankless water heater was showing E110 , i was unable to get that, but he told me that you need clean the air intake filter then i open the panel and did exactly what he told me to do. By that why i got my problem solved!
Thanks buddy
Stan Ivanov profile pictureStan Ivanov
15:37 20 Dec 23
I came from vacation to a broken furnace and a cold house. I called HVAC group late at night and they were able to send someone the next morning.

Technician was very professional, found that I had an igniter problem, had a spare part with him and solved the problem within an hour.

Reasonable pricing and very professional. Highly recommended!!!
Ingrid Turner profile pictureIngrid Turner
07:26 13 Dec 23
Yuri is a true professional and is a very knowledgeable expert about furnaces.
I called him for advice when another well known Hvac company wrongly diagnosed my Trane furnace blower noise and told me I needed to undergo a $1500 repair. Yuri quickly assessed the problem and voila no more blower motor problems. All for $140!!
Thank you Yuri! I highly recommend your service, honesty and expertise.
Anisha Mathews profile pictureAnisha Mathews
18:19 29 Sep 23
Yuriy was very informative and helpful in selecting and installing our new furnace. His prices are very reasonable and the work was completed on time. He was also helpful in setting up our thermostat. I highly recommend his services!
Marah Di Nola profile pictureMarah Di Nola
21:36 14 Aug 23
Exceptional customer service, immediate response by phone & text, professional workmanship!! Clean respectful, very impressed with the workmanship. Thank you once again. Highly recommend for HVAC, water heater replacement. Answered all my queries without hesitation or reservation. Will definitely 💯 use again!!

Perfect Climate, Always

From Installation to Maintenance – We’ve Got You Covered

A close-up of a digital thermostat being adjusted for precise indoor temperature settings

We provide expert thermostat installation for smart, programmable, and manual systems. Our technicians ensure accurate wiring, HVAC compatibility, and optimal placement for precise temperature control.

A person adjusting a wall-mounted smart thermostat for efficient energy savings

Our thermostat repair services address issues like sensor malfunctions, wiring faults, or unresponsive controls. We quickly restore proper function to improve HVAC system efficiency and indoor comfort.

A person using a smartphone app to control indoor temperature settings remotely

Thermostat Maintenance

Upgrade to energy-efficient models with our seamless thermostat replacement services. We replace outdated units with Wi-Fi-enabled or programmable thermostats tailored to your HVAC system.

A smart thermostat being adjusted by a person to optimize home heating and cooling efficiency

Smart Thermostat Integration/Installation

We specialize in installing and configuring smart thermostats, ensuring proper HVAC integration, remote access setup, and compatibility with multi-zone systems for advanced energy management.

Having a HVAC problem? We’ll FIX it today!

We’re available 24/7 to restore your comfort. Call now for same-day service!

Energy-Saving Technology

Thermostat Types We Know Inside and Out

Smart Thermostats

We install and service Wi-Fi-enabled smart thermostats with features like remote access, advanced scheduling, and energy usage tracking for optimized HVAC efficiency and convenience.

Our experts provide seamless installation and setup for programmable thermostats, allowing customized heating and cooling schedules to improve energy savings and enhance indoor comfort.

We specialize in installing and configuring Wi-Fi thermostats, ensuring reliable connectivity, smart home integration, and remote management via mobile apps for ultimate convenience.

Our team handles digital thermostat installation, featuring user-friendly interfaces and precise temperature control, offering a reliable and accurate solution for modern HVAC systems.

Our technicians install and optimize hybrid thermostats, designed for dual-fuel systems, to switch seamlessly between gas and electric heating, ensuring energy-efficient performance year-round.

Qulaity Brands We Work With

Brands We Service and Maintain

Stay in Control

HVAC Group: Serving Residential and Commercial Clients Across Mississauga

Residential

We offer tailored thermostat services for homes, including smart thermostat installations, programmable upgrades, and troubleshooting for HVAC system compatibility. Our technicians ensure optimal zoning control, precise calibration, and improved energy efficiency for year-round comfort.

Commercial

Our commercial solutions include advanced multi-zone thermostat installations, integration with large-scale HVAC systems, and regular maintenance to ensure efficient temperature control. From office buildings to retail spaces, we deliver energy-efficient, compliant, and reliable services for seamless climate management.

Energy-Saving Technology

Common Signs Your Thermostat Needs Professional Attention

Inaccurate Temperature Readings

Fluctuating or incorrect readings often result from faulty temperature sensors, calibration issues, or wiring faults, disrupting your HVAC system's ability to maintain consistent comfort.

Unresponsive Controls

Unresponsive thermostats may signal problems with wiring connections, power supply, or internal circuit board failures, requiring immediate troubleshooting and repair.

HVAC System Running Continuously

If your HVAC system won’t cycle off, it could indicate a stuck relay, faulty thermostat settings, or communication errors between the thermostat and HVAC components.

High Energy Bills

A thermostat that’s not optimized or malfunctioning can overwork your system, leading to increased energy consumption, inefficiency, and unnecessarily high utility bills.

Unusual Noises or Odors

Clicking sounds or burnt smells from your thermostat can signal electrical issues, overheating, or internal damage, requiring professional diagnostics and repairs.

A close-up of a digital thermostat being adjusted for precise indoor temperature settings

Smart Home Comfort

24/7 Emergency Thermostat Services When You Need Them Most

Thermostat issues can happen anytime, disrupting comfort and efficiency. HVAC Group offers 24/7 emergency services to address unresponsive controls, wiring faults, or sensor malfunctions. Our certified technicians use advanced tools to restore your HVAC system’s performance quickly and reliably.

Professional Thermostat Services

Achieve optimal comfort and efficiency with our expert thermostat services. From installation to calibration and maintenance, our skilled technicians provide reliable solutions to keep your home perfectly heated or cooled. Contact us today to schedule your service

Thermostats Made Simple

The Future of Energy Efficiency Starts with Your Thermostat

Take control of your energy use with advanced thermostats designed for smart temperature management. From Wi-Fi connectivity to zoning controls, these systems lower bills, reduce energy waste and keep your home comfortable year-round.

Why to Work with Us

Expertise, Innovation, and Exceptional Service – Top Reasons To Choose Us

Expertise and Experience

With years of experience, we excel in thermostat repair, installation , and maintenance for all systems, ensuring accurate calibration, HVAC compatibility, and optimized performance.

Certified Experts in Thermostat Solutions

Our certified technicians are skilled in handling smart, programmable, and manual thermostats, delivering precise diagnostics, installation, and seamless HVAC system integration.

Advanced Techniques

We utilize cutting-edge tools and methods for wiring connections, sensor calibration, and troubleshooting, ensuring reliable performance and enhanced energy efficiency.

Tailored Solutions

We provide customized thermostat services, from multi-zone setups to Wi-Fi-enabled upgrades, ensuring your system is optimized for your home or business needs.

Fast & Reliable Service

Our team delivers prompt, dependable service, resolving issues like unresponsive controls, wiring faults, or outdated thermostats to restore comfort quickly and efficiently.

Competitive Pricing

We offer transparent pricing for all thermostat services, ensuring affordable solutions for installation, repairs, or upgrades without hidden fees or surprises.

Satisfaction Guaranteed

Our commitment to excellence means every service, from smart thermostat installations to routine maintenance, is backed by a focus on quality and customer satisfaction.

Comfort Made Easy

Real Results from HVAC-Group Inc

Stay in Control

The Key Benefits of Choosing Our Expert Thermostat Services

Improved Comfort

Experience consistent indoor temperatures with precisely calibrated thermostats, ensuring optimal HVAC system performance and personalized climate control for every room.

Lower Energy Bills

Reduce energy consumption with smart scheduling, temperature sensors, and efficient thermostat settings designed to optimize your HVAC system’s output and lower utility costs.

Convenient Control

Manage your home’s climate remotely with Wi-Fi-enabled thermostats that offer app-based control, programmable schedules, and seamless integration with your HVAC system.

Zoned Heating and Cooling

Enhance comfort and efficiency with zoned systems that allow independent temperature control for multiple areas, ensuring tailored heating and cooling solutions for every space.

Reliable Performance

Our expertly installed and maintained thermostats deliver long-lasting reliability, accurate temperature regulation, and seamless integration with modern HVAC systems.

Quality First HVAC Services Just A Call Away!

Business Hours
Monday to Friday: 8 a.m.–9 p.m.
Saturday and Sunday: 9 a.m.–2 p.m.

Area We Serve in Mississauga

HVAC-Group Inc. has been servicing Mississauga  areas for more than 20 year.

Summer's Calling! Get Our Exclusive AC Installation Deals

HVAC Group branded service van displaying heating and cooling repair services – Mobile HVAC service

Frequently Asked Questions

How do I know if my thermostat needs repair?

Common signs include inaccurate temperature readings, HVAC system not responding, connectivity issues with smart thermostats, or a completely unresponsive unit.

Yes, we specialize in replacing older thermostats with smart thermostats, ensuring compatibility with your HVAC system and configuring features like Wi-Fi connectivity and zoning.

A programmable thermostat allows you to set customized schedules for heating and cooling, improving energy efficiency and reducing your utility bills.

Absolutely! We offer multi-zone thermostat solutions and energy management systems tailored for offices, retail spaces, and industrial facilities.

We recommend an annual thermostat inspection to ensure proper calibration, update firmware, and verify seamless operation with your HVAC system.

Yes, our team is available 24/7 to resolve urgent issues like unresponsive thermostats, sensor malfunctions, or HVAC system failures caused by thermostat errors.

Most smart thermostats are compatible with modern HVAC systems, but we assess your setup to ensure seamless integration and full functionality.

Wi-Fi thermostats allow remote temperature adjustments, energy monitoring, and scheduling features, reducing unnecessary heating or cooling and lowering energy bills.

We service leading brands like Nest, Ecobee, Honeywell, and more, offering installation, repair, and configuration for all types of thermostats.

With certified technicians, 15+ years of experience, and a commitment to customer satisfaction, HVAC Group provides reliable, efficient, and professional thermostat services.

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