Residential & Commercial
HVAC Services in the GTA & Durham Region

Over 20 years of experience in Heating, Air Conditioning and Ventilation

Residential & Commercial

We work on heating systems, air conditioning and ventilation for residential and commercial properties.

Highly Experienced

During our 20+ years in the industry, we've worked with all types of HVAC units and we've diagnosed all types of problems.


When you hire us for your HVAC needs, you can be sure that you'll always get reliable and professional help. We have many positive testimonials from former clients.

Flexible Payments

We accept cash, credit, cheque, rent-to-own HVAC, financing, No interest equal payments, commercial lease.

Exallan Heating and Air Conditioning Logo

Exallan Heating & A/C is a family owned business that has been operating in the Greater Toronto Area since 1999.  Experts on heating, ventilation & air conditioning service for residential and commercial properties. This includes repairs, maintenance, installations and upgrades on furnaces, air conditioning, water heaters, smart thermostat, gas fireplace, humidifier, air cleaner & hydronics. Call us for a free estimate on HVAC appliances and emergency repair.

We provide fast & undivided attention to each client, we treat them with respect, integrity and honesty. These principles have helped us grow over the years and maintain our positive reputation. See our Testimonials section to see what our former customers have had to say about our services.

Our mission is to keep you safe, comfortable and to save you energy. Keeping you safe by following safety guidelines from heating, mechanical code book & manufacture manual, Keeping you comfortable & Saving you energy by offering the right size energy star appliance, humidifiers, high efficiency air filtration, Installation of Nest & Ecobee smart thermostat. 

Our Services

Repair, Installation, Sales & Preventive Maintenance


Got a problem with your furnace, or need to install a new one? We can figure out the problem with your unit, or give you advice on a new unit. 


Air Conditioners

We do air conditioning installs, repairs and maintenance. If you’re having issues with your air conditioning system, just give us a call and we can schedule an appointment.


Ductless air conditioners

Ductless air conditioners have become quite popular in recent times. If you want one installed in your home, or need your current unit repaired, let us know.


heat pumps

Are you having issues with your heat pump? With our decades of experience, we’ll be able to diagnose the problem and repair it. If you’re looking to get one installed, we can suggest a unit that is right for your budget and requirements.


Water Heaters

A water heater is a very important component in your home. If you’re experiencing issues with your water heater, let us check out your unit and find the problem.

Types of Units

tankless water heaters and tankless boilers

We also install, maintain and repair tankless water heaters and tankless boilers. If you need help with these units, contact us today.


air cleaners, purifiers, humidifiers and indoor essentials

These units can improve the overall air quality of your home and change the humidity levels in your home. If you’re looking to install or repair an air cleaner, purifier or humidifier, we’re the team for the job.



Various issues can arise from a boiler over years of use. If you’ve noticed that your boiler isn’t functioning properly, give us a call or send us an email.


gas fireplaces

A gas fireplace is a great addition to your home or commercial building. Contact us to get a quote on an installation or repair.


commercial heating and cooling package units

Commercial HVAC units requre an experienced professional. We have over 20 years of experience and we’ve worked with all types of commercial HVAC units.


unit heaters and infrared heaters

We also work with unit heaters and infrared heaters. We can help with the repair, installation and maintenance of these units. 


walk in coolers and freezers or wine coolers

If you need a walk in cooler or freezer for your commercial location, let us know and we’ll provide you with a quote.

gas piping

When it comes to gas piping, it’s important to hire an experienced professional. Exallan has decades of experience working with gas piping, so you have nothing to worry about when you hire us.

gas range

Need help installing or repairing your gas range? Exallan Heating & AC can help. Regardless of the type of unit you have, we’ll be able to fix any issues and make sure your range is functioning properly.

gas dryer

If you noticed that your dryer is making a weird noise, or isn’t working properly, give us a call. If you need a new unit completely, we can suggest one for your budget and needs.

gas bbq

Barbecuing is one of the joys of summer. If you need to have a Gas BBQ installed or fixed, let us know – we can help you.

red tag clearance

If one of your appliances, venting or gas piping has been red tagged, we can help with repair, maintenance and installing a new appliance.

pressure test

We’ll make sure there are no gas leaks in your home by doing an air pressure test in your gas line.

gas leak search

A gas leak is a serious matter. When you smell gas, open your windows and doors and give us a call immediately and we’ll help.

Smart Thermostats

If you’re interested in the capabilities of a Smart Thermostat (such as controlling it from your phone), we can install one in your home. 


Natural Gas Generators

We install and service natural gas generators. If you need help with your unit, give us a call and we’ll schedule an appointment.

Indoor Air Quality

We will make sure that you safe and breathable air in your home by testing the air quality inside of it. 


Digital Wifi & Thermostat

Digital thermostats can reduce energy costs and can be managed from your smart phone. 



See what our customers say about us

Our furnace was making a horrible knocking noise, just when the weatherman was predicting an extreme cold alert. I searched on the web and found Exallan. Exzar was great! He was in my home, diagnosed the problem and had it fixed within an hour! His prices were very reasonable. I would recommend him for any heating or a/c work.
Jill Berni
Fast, honest, dependable and professional contractor. I returned home to my AC not working during the recent heat wave... Exzar came to fix it first thing the next morning. The first time I dealt with him was a couple years ago when I had a plugged AC drain hose and mini-flood in my basement... I was a little panicked about the water... and that time he came the same evening at 10:30pm! Great service at a fair price. It is such a relief to know I have a great independent contractor to call should anything come up again in future. I highly recommend Exallan Heating and A/C.
C Thal
Exallan Heating & A/C provided awesome customer service and expertise when repairing our furnace - ignition switch issue. Exzar was recommended to us after we cleaned our ducts. We phoned him same-day and within an hour he arrived in our home. He completed the repair in 40-mins. He replaced the ignition switch and sealed a leak we had in the drainage hose. Quick, honest and efficient service. His prices were fair. Would highly recommend this company to anyone.
Username "PeppermintJelly"
Knowledgeable and very honest furnace technician. Would recommend to ANYONE who needs one.
Jan P
Exzar was very informative and made me understand that bigger isn't always better. These guys are true professionals.
tke from HomeStars
I would recommend this family owned company highly.
Verified Private User from HomeStars
The job was completed in one day, and they cleaned up beautifully.
Verified Private User from HomeStars
Exallan was referred to me by a meticulous, research focused family member and I knew that doing business with Exallan would be the right choice.
From the moment I met Exzar, I knew he was knowledgeable, honest and straight forward.
Patricia from HomeStars
He responded to my request to have an urgent hot water heater installed promptly and was able to come out the next day.
Chun from HomeStars
He was knowledgeable, understood our needs and never tried to oversell his services.

His team finished the work in 8 hours, cleaned up well and it was a hassle free experience for my family.
SS from HomeStars
Exzar was highly recommended by a good friend and I am glad to have chosen him to get my furnace and AC replaced.
SS from HomeStars
Fast, honest, dependable and professional contractor.
Verified Private User from HomeStars
It is such a relief to know I have a great independent contractor to call should anything come up again in the future.
Verified Private User from HomeStars
Great Service at a fair price.
Verified Private User from HomeStars
Excellent service! Took the time to explain what he was doing and was very friendly and prompt with communication. Would highly recommend.
Matt Law
Very prompt, efficient and caring. I would definitely recommend to all my friends
Emily Wint
Our furnace was down, just when the weatherman was predicting an extreme hot temperature alert. I called on Exzar and immediately was in my home, diagnosed the problem and ordered the replacement unit. His prices were very reasonable. I would recommend him for any heating or a/c work. It is such a relief to know I have a great independent contractor to call should anything come up again in future. I highly recommend Exallan Heating and A/C. The 2 technician named Boyet and Dave are very knowledgeable and very honest furnace technician, they were very informative and gave me some important tips . These guys are true professionals.
Rey Palad