Air Conditioning Repairs You Can Trust

We offer professional, high-quality repairs for any make and model of air conditioner when you need them most.

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Air Conditioner Repair Experts Serving the London, St. Thomas, & Mount Brydges Areas

What Sets Us Apart

We understand that sometimes, unfortunate surprises happen. That’s why we’re committed to providing service at any hour. Call us 24/7, 365 – even on weekends or holidays! You’re guaranteed a response in 60 minutes or less.

70% of all HVAC problems happen because of improper installation. Don’t be part of the statistic! When you trust us with your installations, you’re guaranteed to have it done Just RightTM.

We’ve been servicing the communities of London, St. Thomas, & Mount Brydges areas for over 3 decades. We’ve been able to gather a wealth of knowledge through years of experience providing excellent service and unbiased advice for our neighbours.

Our experts have G1, G2, 313A & 313D, 308A, ODP, Wardflex, and Supervisor Training Program & IHSA Health and Safety Education Program for Contractor Safety Essentials certifications to help serve you better. Additionally, we make sure all our technicians are Right TimeTM certified – so you know we are always working hard to expand our knowledge.

What Customers Say

“I would highly recommend M & K Climate Care. I called M & K to get a quote on a diagnostic visit to check out our central air conditioning. My name was added to a queue.

I discovered that most London companies have a very similar rate for diagnostic visits. M & K was able to come in the very same day that I called; many other companies couldn’t get in until a few days, or a week later.

Ryan was the technician. He was very polite, knowledgeable and I would totally recommend his expertise.

He concluded that our unit was leaking refrigerant and gave us a couple of options, one for fixing the problem, and one for replacing a 20+-year-old unit. Based on his recommendations, we concluded that a replacement would be the most feasible option.

We are very grateful for Ryan’s visit and recommendations.”

- Deanna R.

“We are always impressed with M&K’s service and staff. We have accessed their services for many years. Recent air conditioner tune up with Brian Faulds was no exception. He even gave us additional tips related to an outdoor gas line recently installed.”

- Laura L.

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Heating & Cooling in London, St. Thomas, Mount Brydges, & Surrounding Area

M&K has been providing London and the surrounding areas with dependable heating and cooling services since 1983.

Now, as a part of the Right TimeTM Heating & Air Conditioning family, we can combine our impeccable expertise with more services, locations, and support. We’re here to help you find the best solutions for your home and lifestyle, no matter what your needs.

Frequently Asked Questions

The best way to find out if repairing your air conditioner is worth the cost, or if you are better off replacing it is to contact our experienced technicians for a professional opinion. Call us for a no-obligation in-home assessment so you can get the answers you need.

The experts at M&K can handle any issue with any make or model of air conditioner. We have a large network of HVAC professionals that can help us diagnose and repair your A/C problems!

The only way to avoid repairs is to prevent problems from forming and progressing in the first place. Yearly maintenance appointments give your technician the opportunity to make necessary adjustments and address small problems before they balloon.

We pride ourselves in being available 24 hours, 7 days a week, 365 days a year. That means your emergency, last-minute, or after-hours repairs are never subject to additional fees.

From the time you place your call, we aim to be at your home within 4 hours. We are available no matter what, so we usually can complete a repair the same day as your call.

Our Guarantees

We have the utmost confidence in our work and our people and want to make sure you do, too. That’s why we offer a 2-year guarantee to repair, replace, or refund. Whatever you need until you’re 100% satisfied.

Why Choose Us?


No LoopholesTM

Up to 2 years after the installation date we ensure 100% satisfaction or your money back. No LoopholesTM, no problems.


No HasslesTM

If your new furnace breaks down within the first 2 years of installment, we’ll fix it for free within 24 hours or give you $1000 for your troubles. No HassleTM, no headache.


Just RightTM

We guarantee that any furnace we install will keep you comfortable. If your system isn’t providing a consistent temperature anywhere within 5 years of the installation date, we’ll fix it up to and including replacing the entire system, totally free. No fluctuations, Just RightTM.


We Respect YouTM

We pride ourselves on always acting with integrity and promise to treat your home with the utmost care and respect. If we don’t meet your expectations in any way, you’ll receive our Five Year System Check-Up PackageTM totally free of charge. We Respect YouTM and your home.

Service Around The Clock. Call Us Today



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Servicing Homes for Over 35 Years

M&K has been keeping homes safe and comfortable in the London area since 1983.

35 Years
In Business
Homes Serviced
Star Rating
On Google Reviews

Guaranteed Comfort

We aren’t satisfied until you’re satisfied, guaranteed.

Trusted Experience

We have been operating since 1983, which means we have over 35 years of expertise to offer.

Community Focused

We operate in the London area and have been for over 3 decades, which means we’ve gotten to know our neighbours.

Always Ready

We are always available, 24/7 365 for any HVAC emergency you might have.

Technological Expertise

All of our technicians are Right TimeTM certified and continuously trained to maintain excellence.

Exceptional Reviews

We maintain a 5-star rating on Google for a reason; we care about our work.

24/7 365 SERVICE

226-721-8501 Request a Quote
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