Furnace Installation and Replacement in Waterloo

The furnace itself is usually the easy part of a Waterloo furnace replacement. Venting, ducts and sizing are where homes differ.

Laurelwood, Columbia Forest, Clair Hills and Eastbridge. Most of these 1990s-2010s homes already have a high-efficiency furnace with plastic venting, so a swap is often straightforward. The question is size. Builders often installed larger furnaces than the house needs, and since then many homeowners have added insulation and better windows. Sizing to the house rather than the old label usually lets us go smaller, which means quieter operation and fewer on-off cycles.

Beechwood, Lakeshore, Westmount and Lincoln Village. In 1950s-70s houses, the existing furnace may be a second-generation unit with ductwork from the original build. Undersized returns are common. We check static pressure and often add or enlarge a return when we install, because a new furnace on a starved duct system runs hot and wears out early.

Uptown and older homes. Some older Waterloo homes still have a mid-efficiency furnace venting into a masonry chimney. Every new gas furnace sold today is a high-efficiency condensing model with plastic side-wall venting. When the furnace leaves the chimney, a gas water heater still using it can be left in a flue that's too big to draft properly. That usually means a chimney liner or a new water heater, and we'll tell you up front if it's needed.

For most Waterloo homes, a two-stage furnace with a variable-speed blower is the sweet spot. It runs on low most of the winter, which is quieter and more even, and steps up on the coldest nights near the region's design temperature of around -19°C to -20°C.

Single-stage furnaces cost less up front and suit smaller homes or tight budgets. Modulating furnaces fine-tune their output and give the most even heat, but cost more. We'll explain the trade-offs for your house rather than steer you to the top model.

If you're also replacing an old air conditioner, consider a cold-climate heat pump paired with the new furnace (a dual-fuel setup). Waterloo homes are on Enbridge Gas and Enova Power, so you may qualify for Home Renovation Savings Program rebates on the heat pump; check current eligibility in our Ontario heat pump rebate guide.

A standard high-efficiency gas furnace in Waterloo Region typically runs somewhere around $5,000 to $9,000 installed, with variable-speed and modulating models, chimney liners, duct changes and difficult access pushing it higher. These are typical market ranges, not our price list. Your quote depends on the furnace size and model, the venting route, ductwork and anything else the job needs.

Our furnace replacement cost guide breaks down what drives the price. Financing is available. If your current furnace is rented, ask the rental company for your buyout amount before you get quotes.

The best time to replace a furnace in Waterloo is before it forces the decision. In September or October you have time to compare options, look at a dual-fuel setup and check rebates. In January, a failed furnace leaves you choosing from whatever is in stock that week.

If your furnace is near 20 years old, is one of the original builder units in Laurelwood, Columbia Forest or Clair Hills, or has needed repairs two winters running, get a quote while it still works. A quote costs you nothing and gives you a plan.

We install furnaces in Uptown, Beechwood, Laurelwood, Columbia Forest, Clair Hills, Lakeshore, Eastbridge, Colonial Acres, Lincoln Village, Northdale and Westmount. All gas work is done by licensed gas technicians, and we're TSSA-registered.

Not sure your furnace needs replacing? A furnace repair visit in Waterloo gets you an honest repair-versus-replace answer. See our main furnace installation page for how an install day works, and the Waterloo HVAC page for everything else we do in the city.