Your source for Furnace Replacements, Repairs and Rentals in Durham

Our name says it all; call on Reliance for local service that goes above and beyond. Rely on licensed heating technicians who are as courteous as they are professional.

For over 50 years, we’ve been serving neighbours in every community within the Durham Region. This gives us unique insights into your needs – and expectations.

We offer a full range of furnace and HVAC products and services. Even better, it’s all within easy reach with a single phone call!

  • New furnaces sales and installation
  • Furnace repairs, tune-ups and maintenance
  • Specialized expertise in heating/combi boiler systems

Our solutions are not only customized to your home. We offer you a range of payment options so you can enjoy optimal home comfort on your terms.

Family excited about their fast and new furnace and maintenance

We’re proud to have won the trust of customers in every town, city and neighbourhood in Durham Region

  • Ajax
  • Brock
  • Clarington
  • Oshawa
  • Pickering
  • Scugog
  • Uxbridge
  • Whitby


Drop by for a visit. Reliance Durham is located at 2055 Forbes St in Whitby.

Call today or Book an in-home consultation online

Check Out Some of Our Most Recent Furnace Articles:

Choosing the Right Furnace

We offer great brands
Choose from brands like SmartAir™, Amana®, Carrier® and Goodman®

6 ways RelianceTM delivers on our promise of industry-leading service

Enjoy the value that comes with our buying power
As part of a large home comfort company, we buy in volume which ensures our products are always competitively priced.

We’re focused on delivery exceptional on local level
Our success is based on winning – and keeping – the loyalty of homeowners in Durham.

Great customers demand great service
Home comfort emergencies can happen any time, day or night. That’s why we feature live telephone support, 24/7/365.

Tap into expertise with your free in-home consultation
Our Home Comfort Advisors can help with everything from choosing the right furnace and HVAC system to maximizing available energy rebates.

Not one but two service Guarantees
We stand by service with a 100% Money-Back Guarantee, plus a Next Day or we pay $500 Installation Guarantee. Read more about our available guarantees.

No two heating solutions are alike.
Did you know that our Home Comfort Advisors will consider dozens of factors before selecting the right furnace or HVAC system for you? Your advisor will take in account your home’s size and location, the type of heating solution, your budget,the amount of available energy rebates, and more.

Your next furnace: To rent or not to rent?

By renting your heating system, you can forego the upfront cost of buying and installing new equipment. A local Home Comfort Advisor can help you decide if renting is the smarter choice for you.

Some of the advantages of renting a furnace include:

  • Expert installation with no upfront costs and affordable monthly rates
  • Access to our large team of licensed technicians
  • 24/7/365 Live telephone support
  • Service as soon as same day including weekends and holidaysFully stocked trucks with the parts needed to get your repairs completed on the first call
  • No charge for repairs or replacement of your rental equipment

Read more about renting or buying your furnace

Furnace repairs done fast, done right

If your HVAC system has broken down, or you suspect that something is about to malfunction, call us 24/7/365. You’ll speak to a live Reliance representative, who will arrange the earliest possible appointment. Our large network of licensed heating technicians cover the entire Durham region.

  • We service virtually every furnace and HVAC brand and model, including combi boiler systems
  • “No surprise” pricing – we’ll give you the price of the repairs before we start
  • Save 10% on your repair bill if you’re a Reliance Heating or Cooling Maintenance or Protection Plan customer
Why choose RelianceTM for your next furnace?

Tune-ups keep your furnace running efficiently.

Can’t remember the last time you had a furnace tune-up? You’re probably way overdue. Here’s something to consider: regular tune-ups make for a more efficient – and potentially more reliable – furnace.

Three benefits of a Reliance Durham tune-up:

  • A clean heating system could operate more efficiently, which can lower utility bills/li>
  • A tune-up could reveal minor furnace problems before they become costly repairs/li>
  • Furnaces that run more efficiently tend to have longer life spans

Combi boiler systems are back!

Decades ago, heating with hot water was common throughout Ontario. Now hot water boiler systems are back with a host of new technological advancements that make them even more efficient.

Our selection of combi boiler systems disperse hot water to radiators and baseboard to heat indoor air. Then, the hot water cycles back to the boiler where it is heated again.

Homeowners in Durham are embracing combi boiler systems to not only heat their homes. The newest generation of systems are ideal for in-floor heating, heated driveways, hot tubs and pools.

In addition to installing a new system, we also have the expertise to service and maintain your existing boiler system. Read more about the differences between furnaces and boilers.

Energy-efficient furnaces: Good for your wallet and the planet

Space heating can represent as much as 63% of your home’s energy use. You can save an average of 6% on energy with an ENERGY STAR certified forced-air, gas-fueled furnace.*

In addition to lower utility bills every month, government energy rebates can make the decision to install a new furnace even smarter!
Learn more by contacting a Reliance Durham Home Comfort Advisor. As always, you’ll get all the information and insights you need during your free in-home consultation.
*Natural Resources Canada, 2018

At Reliance Durham, we take your home comfort seriously

From Pickering and Ajax to Whitby, Oshawa, Clarington Scugog, Uxbridge, Brock and everywhere in between, our local team of Reliance™ professionals is always ready to provide you with superior customer service experiences.

Call us today, or book a free in-home consultation online.