Keep Your Air Clean with a HEPA Filter

HEPA filters are one of the most efficient air cleaning products available to improve your home’s air quality.

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

What Sets Us Apart

Experience You Can Trust

M&K has been serving your communities for over 35 years. Our technicians are all equipped with extensive experience, continuous training, and a vast network of Right Time^TM employees with the knowledge to get the job done right.

We Care About Our Community

Air quality is important to ensure your home is a comfortable one. Our top priority is making sure our work is done right, so your home is a happy one.

We Win at Customer Service

We have a 5-star rating on Google, so you know that our customers have received 5-star service. You don’t have to take our word for it, you can see for yourself.

Done Just Right^TM, Every Time

Our guarantees ensure that every service we perform at your home is done quickly, efficiently, and Just Right^TM, every time.

What Customers Say

“Absolutely no complaints, head office communicates well and the tech was professional (and quite safe for corona time) and explaining our options well.”

- Peter B.

“Service was fast and on time. Technician friendly and polite.”

- Graham H.

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 Time^TM 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.

Book your in-home assessment today

Frequently Asked Questions

What is a HEPA Filter?

HEPA stands for “High-Efficiency Particle Arrestor”. It removes the smallest airborne particles from your air, leaving you with clean indoor air.

How Often Should I Change My HEPA Filter?

Most filters need to be changed every 6 months to 2 years, depending on the type you have installed, but if you aren’t sure, please feel free to consult one of our experts.

How Much Does a HEPA Filter Cost?

HEPA filters typically cost more than a traditional air filter. You can get an exact estimate by asking one of our experienced technicians.

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 Loopholes^TM

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

No Hassles^TM

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 Hassle^TM, no headache.

Just Right^TM

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 Right^TM.

We Respect You^TM

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 Package^TM totally free of charge. We Respect You^TM and your home.