Furnace Sales & Installation

Serving London, St. Thomas & Area

We know how important a reliable heating system is for Ontario homes. Whether you’re replacing an old furnace, installing a new furnace in a new home, or upgrading to a more efficient system, G.W.B.’s licensed technicians provide expert HVAC services and honest, quality advice.

Experiencing an unexpected breakdown?

We also offer Emergency Furnace Repairs & Maintenance.

Quality Furnaces for Every Home

G.W.B. Heating & Cooling sells and installs a wide range of industry-standard furnace brands for homes across London, St. Thomas and the surrounding area. Check out our recommendations below, and we’ll help you find the best option for your home’s needs and budget.

Featuring Reliable Ruud Furnaces

When it comes to value, Ruud delivers right out of the box. Their gas furnaces offer the premium features and reliability of top-tier brands, at an affordable price.

Why We Recommend Ruud Gas Furnaces:

Exceptional Value — Premium heating performance and efficiency without the premium price tag.
"Bulletproof" Heat Exchangers — Ruud backs their heat exchangers with a 20-year or Limited Lifetime Warranty, depending on the model.
Lower Energy Bills — With efficiencies reaching up to 98% AFUE, nearly all the fuel you pay for is turned into heat for your home.
Quiet Comfort — Insulated cabinets and advanced airflow technology keep your home cozy without the noise.
Smart Control — Many models work with the EcoNet® smart thermostat, so you can manage your heating and get maintenance alerts right from your phone.
Strong Warranty Coverage — 10-year parts warranties on registered models, so you're covered when it matters.

Check out RUUD’s limited time financing

Comparing Gas Furnace Types

MODULATING FURNACES

Modulating, or variable-speed furnaces, adjust the heating output gradually to meet exact heating demands. Modulating furnaces deliver the most precise temperature control, maintaining very steady indoor temperatures and maximizing efficiency.

TWO-STAGE FURNACES

These models can operate at two different levels—usually a low and a high setting. The furnace typically runs at the lower setting most of the time for steady, consistent heating, and only switches to full capacity during extremely cold conditions. This operation allows for more even temperatures, improved home comfort, and often greater energy efficiency.

SINGLE-STAGE FURNACES

These models have one heating output level. They operate at full capacity whenever the thermostat calls for heat, which can result in more temperature swings because they turn on and off more frequently.

When your furnace finally needs a repair, Rheem® makes that moment less painful. A sister brand to RUUD, their gas furnaces are built around a heat exchanger known its durability, so out-of-warranty repairs tend to cost less and happen less often. Ask G.W.B. Heating & Cooling about the Prestige® Series and Classic® Series.

Ruud® gas furnaces deliver reliable, energy-efficient comfort for your home. The Achiever Plus Series features two-stage heating for consistent temperatures. Built-in PlusOne® Ignition and Water Management System features ensure dependable performance and protection for your home. A patented heat exchanger reduces noise, while 96% AFUE helps lower energy costs. Durable, quiet, and efficient.

Napoleon® gas furnaces are a top choice for homeowners seeking energy-efficient, Canadian-made heating solutions. Designed for fast, reliable warmth, these furnaces keep your home cozy all winter while helping reduce energy costs. G.W.B. Heating & Cooling carries 2-stage Napoleon models including the Ultimate 9700 Series, Premium 9600 Series, and Essential 9600Q Series.

Proudly built in Canada, Continental® gas furnaces are a sister brand to Napoleon with some models manufactured in Canada, delivering high-efficiency heating. G.W.B. Heating & Cooling carries the C96 and C95 High-Efficiency Series.

Quiet comfort, engineered in. Armstrong Air® furnaces are a trusted premium brand, built with precision sound-dampening technology, so your heating system runs in the background - not in your living room. G.W.B. Heating & Cooling carries Armstrong Air's Pro Series™ and high-efficiency two-stage models.

Lennox® gas furnaces are perfect for homeowners seeking industry-leading efficiency and precise temperature control. Engineered for ultra-quiet operation and maximum comfort, these furnaces deliver reliable warmth while keeping monthly heating costs low. Ask G.W.B. Heating & Cooling which Lennox models work best for your home and budget across their Signature®, Elite®, and Merit® Series.

Ducane™ gas furnaces are known for their reliable performance, energy efficiency, and affordability, making them a popular choice for homeowners seeking value without sacrificing quality. Ducane™ offers both single-stage and two-stage furnaces with high AFUE ratings.

Concord® gas furnaces are designed to provide dependable heating performance and are recognized for their straightforward design and affordability, making them a good choice for budget-conscious homeowners. Both single-stage and two-stage options are available.

SERVICING AREA
St. Thomas and
Surrounding Area

HVAC FINANCING NOW AVAILABLE

On all Ruud Air Conditioners & Furnaces

No Payments or Interest Until 2027!*