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
  • Expertise in both conventional furnaces and heating/combi boiler systems

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

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
  • A tune-up could reveal minor furnace problems before they become costly repairs
  • Furnaces that run more efficiently tend to have longer life spans

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

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 disperses 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

Call us now or book a FREE in-home consultation online today.


What our customers are saying about us in:


Average Google Rating
8.9 / 10
Average HomeStars Rating

Why Choose Reliance?

Many of our locations have been awarded Best of HomeStars 2019

Featured Furnace Resources

*This promotion is only available in select areas when purchasing the Value 100 Furnace. Financing is OAC.  Customers must pay an upfront search/filing fee of $49 when financing. Financing example: The select furnace regular price is $2,899 (based on the 40K Value 100 Furnace). With zero down payment, the monthly payment at 9.9% APR with a 144 month amortization is $38.95 including applicable taxes. Conditions apply.  Cannot be combined with any other offer. Contact us for details.