Experiencing An Emergency Furnace or AC issue? Call Us! We're Available 24/7. Call Us Now & We'll Pick Up Now: (416) 520-0574

Experiencing An Emergency Furnace or AC issue? Call Us! We're Available 24/7. Call Us Now & We'll Pick Up Now: (416) 520-0574

Tankless Hot Water Systems:
Installations And Repairs

We install and service tankless hot water systems in residential homes located in Mississauga, Oakville, Milton, Georgetown, Burlington and surrounding areas!


GTA’s Favourite Name in Tankless Hot Water Systems

Lose The Bulky Tank - Go Tankless!

Coretemp Heating and Air Inc. is a leader in affordable and long-lasting whole-home tankless water heaters.

From our first contact to installation, we strive to create a pleasant and positive experience for all our valued customers.

Our experts will go above and beyond to size the correct model and determine the best installation options for your home.

Get a free quote

All images above are from real CoreTemp clients in the GTA and are not 'stock images'  from the internet*

Your Satisfaction, Guaranteed!

We treat every residential HVAC project with the respect it deserves, and don't stop until you are satisfied.

Read Our 5-Star Google Reviews
  • All our technicians are trained, certified & insured


  • Satisfaction guaranteed on every project


  • 30+ years HVAC experience


  • 5-Star Google Rating & 99% On HomeStars


  • Available 24/7 emergency service


  • We never use subcontractors - EVER



Hot Water, When You Need It

Enjoy an endless supply of hot water and energy efficiency with a tankless water heater from Rinnai.

We offer several different models, some of which are the size of a small suitcase!

They offer both natural gas and propane gas models which are compact, easy-to-install and perfect for indoor locations.

Use the button below to contact us about which tankless model would be best for your home size and water consumption needs.

Get a free quote

100% Satisfaction Guarantee

At CoreTemp we stand behind the products we offer to our customers.

We believe in installing quality products with strong manufacturer warranties and technical support.

We pride ourselves on being authorized dealers and factory trained which allows us to provide our customers with excellent skills to complete all projects to manufacturer specifications and guidelines. 

Get a free quote

Fully Licensed Technicians

Every tankless hot water system installation is performed by a fully licensed CoreTemp technician.

We meet or exceed all Ontario license requirements and certifications. We are TSSA licensed, Skilled Trades Ontario certified and WSIB insured.

Contact us today and we can discuss your tankless hot water options.

Get a free quote

Tankless Hot Water System -
24 Hour Emergency Service & Repairs

Don't Run Out Of Hot Water

Noticed a sudden failure in your hot water supply? Don't worry, CoreTemp Heating And Air Inc. has the tools to ensure a quality repair.

Our technicians are all fully certified and undergo continuous training to guarantee the finest tankless water heater repair services in the industry. 


Thanks
to our well-established line of tankless  solutions, coupled with a knowledgeable workforce and technical support, you can rest assured that you’ll never run out of hot water, especially on those chilly winter days. Get in touch now!

Get a free quote

Call 416 520-0574 now for 24 hour emergency service for your homes tankless hot water system.

Thank You To Our Clients!

We are proud to be the winners of both the HomeStars "Best Of The Best Award"
and "Best Of Award" for 2023.

We'd like to thank our
amazing clients for their continuous support.
We couldn't achieve these awards without your generous reviews!

2x Winner

13x Winner

2x Winner

13x Winner

View Our HomeStars Reviews

Read All Our Reviews And Feel Good

You're Working With An Experienced HVAC Professional

Why Our Clients Love Us

5-Star Google Rating
& Amazing Reviews

We have the best reputation in the industry with a 5-star Google rating from real happy homeowners.

Read our reviews below.

Read our Google reviews

Trained, Certified
& Insured Technicians

Any time you are dealing with HVAC, you need a certified expert.
Anything less simply isn't safe. We only employ certified & trained techs who are insured

Satisfaction Guaranteed
On Every Project

We're not happy until you're happy.
We guarantee that you will be satisfied with your equipment! Whether it's an install, repair or maintenance, we're there every step of the way.

Quality HVAC Installs

We install your HVAC equipment properly from the start to save you time and money in the long run.

Quick HVAC Repairs

There's nothing worse than your equipment failing on either a cold winters night OR that heatwave in summer. Our clients love our quick repair services.

24 Hour Service

We are available 24 hours a day and 7 days a week to help you with your HVAC needs.

Simply call us at the number below and rest assured you're in good hands.

30+ Years Of

HVAC Experience

Our top-notch services include 30 golden years of hard work and customer satisfaction.

Unrivalled
Customer Service

Thanks to our strong focus on delivering outstanding customer service, we’ve earned national recognition and respect.

World-Class Products
We Know & Trust

We provide first-class products and swift services for all budgets. Products we carry are the very same we put in our OWN homes.

  • Recent Projects


    Every project comes with its own needs and challenges. Tell us your priorities, and we'll fill them to your satisfaction.


    View Our Projects
  • Welcome To CoreTemp HVAC - Meet Richard Payer

    "I personally guarantee your satisfaction"

    Coretemp Heating and Air Inc. was founded by Richard Payer who has over 30 years of industry experience. He began as a service technician and gained valuable hands-on experience and knowledge of all the major HVAC brands offered in Canada.

    Richard believes In putting the customer first!  He does this by educating customers, not over-selling them on products they don't really need. in 2007, he started his family-run residential HVAC business CoreTemp Heating and Air Inc.

    The products we carry have been carefully selected by Richard and our technicians based upon their performance, reliability and of course costs. He only recommends products that meet his high standards and that he would use in his own home.

    He personally handles every project & we invite you to contact us for a FREE quote & experience the CoreTemp difference.

    Contact Richard Now

    Contact Us For All Your Tankless Hot Water System Needs!

    Contact Us For All Your Tankless Hot Water System Needs!

  • Contact Us For Your Tankless Hot Water Needs Today!

    Contact Us

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