Reliable HVAC Solutions in the Niagara Region

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Anytime, Day or Night—We’re Here for You!

24/7 Emergency
HVAC Services

(905) 688-1849

Anytime, Day or Night—We’re Here for You!

24/7 Emergency
HVAC Services

(905) 688-1849

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About MACKAY Heating & Cooling

Trusted HVAC service provider in Niagara region since 1967

We provide complete heating, cooling, and indoor air quality services, including installation, repair, and maintenance for furnaces, air conditioners, water heaters, and more. Our priority is customer satisfaction and reliable emergency support.

Certified Team Members

Affordable HVAC Solution

With over 50 years of experience in the Niagara Region, we service and repair any brand or all major brands of furnaces, AC units, heat pumps, and mini-splits.

Our technicians are certified gas fitters in Ontario, fully insured, and bonded for your peace of mind.

More ABout Us

24/7 emergency

(905) 688-1849

Services We Offer

We Provide Full Range of HVAC Services

Furnace Repair & Installation

Air Conditioning Repair & Installation

Boiler Repair & Installation

Water Heater Repair & Installation

Mini Split Repair & Installation

Heat Pump Repair & Installation

Indoor Air Quality Services

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Trusted Since 1967

Quality Products with Affordable Pricing

01

Competitive pricing to fit your budget without compromising on quality.

02

A legacy of trust, quality, and customer satisfaction in every project.

Why choose us

Why you Should Choose our HVAC Services

Trusted Experience

Over 50 years of trusted HVAC service in the Niagara Region.

Certified Technicians

Skilled professionals with extensive training and expertise.

Customer-First Approach

Dedicated to delivering exceptional service and satisfaction.

24/7 Emergency Support

Always available to handle emergency HVAC needs.

With over 50 years of experience in the Niagara Region, we service and repair any brand or all major brands of furnaces, AC units, heat pumps, and mini-splits.

What Our Customers Are Saying

MacKay Heating & Cooling

4.8

Based on 324 reviews

review us on

John Walker

20:57 28 Nov 25

We can always count on MacKay to be reliable and honest anytime we need service done to our old furnace. Thanks for the quick response yesterday.

Antonio Mash

16:28 27 Nov 25

The customer service rep Helio,was not only helpful but resolved the issue with professionalism and great care.

ERNIE SWEENEY

20:13 25 Nov 25

Puntial, knowledgeable, good service, answers to all our questions. Thanks Steve

Shelley Wilsher

19:51 25 Nov 25

Great service , came same day

Wendy Funk

17:21 25 Nov 25

Regular maintenance done with efficiency, respect for my home and communication!

Jean Roessner

03:10 25 Nov 25

Great service done by Steve, who came and efficiently cleaned and got my furnace ready for the season. I had a call to book appointment for cleaning, and a reminder call for when tech was on way. Well done!!

Neal D

00:53 21 Nov 25

Quick to diagnose my furnace issue. Very easy to deal with. Polite service technician.

Sheila Massey

17:11 17 Nov 25

MacKay installed my furnace and hot water tank 16 years ago and I have had the furnace maintained by them over the years. The staff are efficient and friendly and I highly recommend this company.

Irene McEvoy

19:16 13 Nov 25

We have used MacKay Heating since purchasing our home 15 years ago. We have used them to replace our furnace and air conditioner as well as maintenance calls. We have always been very satisfied with their service and response to issues. I’d highly recommend them.

Shalom O

11:35 11 Nov 25

From start to finish, the service was great. The two guys who were here were very polite and cleaned the area after they finished. We have been dealing with this company for 24 years. They installed our first furnace in 2001 and have maintained the furnace all throughout this period. I will recommend them again and again.

Laurie Andrews

13:39 08 Nov 25

Just got a new furnace, A/C and hot water tank and we were happy with the experience. The sales and service personnel were professional, arrived on time and finished ahead of schedule. Would highly recommend.

Wendy Edmonson

20:32 06 Nov 25

Excellent service! I highly recommend this company.

Kevin Wildeman

19:40 30 Oct 25

The folks at MacKay heating and cooling are friendly, professional, prompt and go out of their way to get to you quickly and resolve problems. We’ve been using them for years and have always been happy even when they are called upon in the middle of the snowy night. I recommend them with enthusiasm.

Sam Young

20:24 29 Oct 25

This is my 1st experience with MacKay heating . After my regular service company responded , in late October , to my request to perform my annual furnace maintenance service in November . Sorry , we have not started to book November yet was the response . This was the same company I purchased my new furnace from 3 years ago , and this year measured up for a new Air Conditioner and never provided a price . ‘ HOW DO SOME COMPANIES STAY IN BUSINESS ?
MacKay was different . They were immediately on the ball . Most cooperative , friendly and professional in customer relations
In this instance , SERVICE WITHIN 1 WEEK . The service technician was equally personable and a REAL PROFESSIONAL .
As a former Metal Manufacturing business owner and Mechanical / Aeronautical Engineer . I appreciate a company who puts the customer 1st . and knows their stuff .
I would not hesitate recommending MacKay Heating & Cooling for your HVAC requirements . An 11 out of 10 .

Luanne Paproski

00:06 28 Oct 25

He was friendly and professional. Didn’t seem rushed. Took his time to do the job right. Was patient in explaining to me what he was doing during the process and answered my questions with respect.

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