AC Repair in St. Catharines

AC Repair in St. Catharines

AC Repair & Installation in St. Catharines

If you’re searching for AC Repair in St. Catharines, MACKAY Heating & Cooling is your trusted partner. We provide expert repair, installation, and maintenance services to ensure your home stays cool and comfortable during the summer months. With over 50 years of experience, our certified technicians can handle any air conditioning issue, from quick repairs to full system installations. We also offer 24/7 emergency support to ensure your cooling needs are met promptly, even during unexpected breakdowns. Simply search "AC Repair in St. Catharines" to locate us quickly.

Quality Products

Top-tier HVAC products for lasting comfort.

Affordable Prices

Competitive rates without compromising quality.

Local Technicians

Skilled professionals ensure perfect service.

Reliable Services

Dependable support, including 24/7 emergency care.

Our Services Include:

  • AC Repair in St. Catharines: We diagnose and repair issues quickly to restore your AC’s performance.
  • AC Installation: Expert installation of energy-efficient units tailored to your home.
  • Routine Maintenance: Preventative maintenance to extend the lifespan of your AC and avoid breakdowns.

Why Choose MACKAY Heating & Cooling?

  • Trusted Since 1967: Over 50 years of delivering reliable HVAC solutions.
  • Affordable Services: Transparent pricing and budget-friendly options.
  • 24/7 Emergency Service: Quick response to any air conditioning emergency, day or night.
  • Flexible Financing: You can enjoy home comfort without breaking your budget.

AC Repair in St. Catharines

When your AC isn’t working as it should, MACKAY Heating & Cooling offers professional AC Repair in St. Catharines. Whether your unit is making unusual noises, leaking, or not cooling effectively, our technicians will quickly diagnose and fix the issue. We work with all AC models and ensure your system operates efficiently to restore your home’s comfort. Our 24/7 emergency services are available to get your AC back up and running when you need it most. Simply search "AC Repair in St. Catharines" to locate us quickly.

AC Installation in St. Catharines

If your air conditioner is outdated or beyond repair, MACKAY Heating & Cooling provides reliable AC Installation in St. Catharines. We guide you through selecting the right, energy-efficient system for your home and perform seamless installation for optimal performance. Our team ensures your new AC system is properly sized, installed, and tested to keep you cool during the summer. We also offer financing options, making it easy to upgrade to a more efficient system that lowers your energy bills. AC Repair in St. Catharines

Service Areas:

We proudly serve St. Catharines and the surrounding areas, including Niagara Falls, Niagara-on-the-Lake, Welland, Thorold, Grimsby, Port Colborne, Pelham, and Smithville. Wherever you are in the Niagara region, MACKAY Heating & Cooling is ready to provide expert AC repair and installation services. AC Repair in St. Catharines

Frequently Asked Questions (FAQs)

How do I know if my AC needs repair in St. Catharines?

If your AC is making strange noises, not cooling effectively, or causing higher energy bills, it’s time to call for AC repair in St. Catharines.

Most installations in St. Catharines take one day, but the time may vary depending on your home’s requirements and the system’s complexity.

Upgrading to a modern, energy-efficient AC unit lowers energy costs, improves cooling performance, and enhances comfort during the hot summer months in St. Catharines.

Annual maintenance is recommended to keep your AC running efficiently and to prevent unexpected breakdowns during peak summer months.

Yes, we offer flexible financing options to make it easier for homeowners in St. Catharines to upgrade to a new AC system. Contact us for more details.

For affordable AC Repair in St. Catharines, trust MACKAY Heating & Cooling.

Contact us today to schedule a service or get a free estimate!

Schedule an Appointment

HVAC Service Areas Across Niagara Region

MacKay Heating & Cooling place picture
MacKay Heating & Cooling
4.8
Based on 316 reviews
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Sheila Massey profile pictureSheila 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 profile pictureIrene 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 profile pictureShalom 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.
Response from the owner 15:27 13 Nov 25
Hi Shalom, thanks for your 5 star rating and kind words regarding your recent furnace install. We really appreciate the opportunity to support your HVAC needs for the last 24 years and we look forward to continuing to support you in the coming years!
Laurie Andrews profile pictureLaurie 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.
Response from the owner 15:25 13 Nov 25
Hi Laurie, thanks so much for your 5 star rating and kind words regarding your recent equipment install. We are so pleased you were happy with the whole experience and we try to complete all our installs quickly but more importantly, safely and with the highest level of quality.
Wendy Edmonson profile pictureWendy Edmonson
20:32 06 Nov 25
Excellent service! I highly recommend this company.
Response from the owner 15:23 13 Nov 25
Hi Wendy, thanks for the 5 star rating and the recommendation for MacKay!
Kevin Wildeman profile pictureKevin 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.
Response from the owner 15:22 13 Nov 25
Hi Kevin, thanks for your 5 star rating and kind comments! We appreciate your continued business and recommending us with enthusiasm! 🙂 You’re absolutely right that we have Tech’s on call after hours, even on a snowy night, for emergency situations like no heating. Thanks again and we’re always here if you need us in the future.
Sam Young profile pictureSam 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 .
Response from the owner 15:20 13 Nov 25
Hi Sam, Wow! thanks so much for your 5 star rating and kind words about your recent experience with us. We are so happy to hear you were pleased with your furnace maintenance with Steve and we have passed along your kind comments to him. Can’t speak about the other HVAC companies you may have worked with or called but we’re happy you called us! We try to do the best we can and although not perfect, every customer and every interaction is important to us so when we get feedback like yours, it provides great feedback that we’re on the right track! Thanks again and we’re always here if you need us again in the future.
Quinton Ascah profile pictureQuinton Ascah
14:38 29 Oct 25
Response from the owner 15:16 13 Nov 25
Hi Quinton, thanks for your 5 star rating!
Luanne Paproski profile pictureLuanne 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.
Response from the owner 15:16 13 Nov 25
Hi Luanna, thanks for your 5 star rating and kind words regarding your recent service experience with MacKay. Happy to hear our Tech answered your questions and kept you informed on what he was doing. We are always completely transparent on what we are doing with the equipment in your home and always welcome questions or feedback from our customers!
Dave Taylor profile pictureDave Taylor
19:24 22 Oct 25
Always professional with friendly service. They are my “go to” guys for everything heating and cooling.
Response from the owner 15:12 13 Nov 25
Hi Dave, thanks for your 5 star rating and kind words about your recent experience with MacKay! We’re always here if you need us again in the future!
V. Ganiyev 3382 profile pictureV. Ganiyev 3382
21:48 21 Dec 24
24 hours fast and professional. No complains
Sylvain Louchez profile pictureSylvain Louchez
23:53 19 Dec 24
Terry Church profile pictureTerry Church
15:03 14 Dec 24
Fast, effective service. Going to bed Friday night, discovered no furnace heat on the current coldest night of the year. Called MacKay service line, talked to the weekend service guy. He arrived early the next morning, diagnosed the problem, had the required part in his truck. Replaced the part and confirmed the furnace was now running properly. Thanks Josh for a job well done.
mike hughes profile picturemike hughes
20:29 09 Dec 24
They installed a replacement cold-weather heat pump on my existing furnace. The estimator, Fred, was courteous, knowledgeable and straight forward. The crew did a great job of installation and clean up. The system appears to be working very well.
John Crompton profile pictureJohn Crompton
16:39 09 Dec 24
Contact Info
  • 2517 First Street Louth, St. Catharines, ON L2R 6P7
  • (905) 688-1849
  • info@mackayheating.ca

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