How Much Does a New Furnace Cost in Calgary? (2026)

Short answer: A standard high-efficiency furnace replacement in Calgary typically runs about $6,000 to $15,000 installed. The final number depends on the size and efficiency of the unit, whether the venting and gas line can be reused, and any code upgrades the swap triggers. Before replacing, the honest first question is whether a repair makes more sense.

A furnace is a big purchase you usually make in a hurry. Knowing what moves the price, and when repair is the better call, keeps you in control of the decision.

What moves the price?

Factor	Lower cost	Higher cost
Unit type	Single-stage high-efficiency	Two-stage or modulating, higher-end brands
Size	Correctly sized for the house	Larger homes that need more capacity
Venting	Existing high-efficiency venting can be reused	New venting needed, or a long run to an outside wall
Gas line and drain	Existing connections work as is	Gas line changes or a new condensate drain or pump
Access	Open mechanical room	Tight closet or crawlspace
Code items	None triggered	Upgrades required by the swap

Repair or replace?

Situation	Usually
Under about 10 years old with a failed igniter, flame sensor or blower motor	Repair
Cracked heat exchanger	Replace. The exchanger is the expensive part, and a crack is a safety issue
Around 20 years old and needing a major part	Replace
Repeated breakdowns, rising bills, uneven heat	Get a replacement price and compare

Age, the specific fault and how the rest of the unit is holding up decide it. We give you the straight version rather than defaulting to the bigger sale.

What should a furnace quote include?

The furnace model, size and efficiency rating
Removal and disposal of the old unit
Venting, gas connection and condensate drain work
Thermostat, if it is being replaced
The permit and inspection. The City of Calgary has a specific permit for residential furnace replacement
Warranty terms for the equipment and the labour

Before you replace: quick checks

A furnace that will not start is not always a dead furnace. A tripped switch, a clogged filter or a snowed-in vent pipe causes plenty of no-heat calls. Run through our seven quick checks first. And annual furnace service is the best way to stretch the life of the one you have.

Common questions

How long does a furnace last in Calgary?

Many furnaces last around 15 to 20 years with regular service. Long Calgary heating seasons put a lot of hours on them.

Can a plumber install a furnace?

In Alberta, yes, if they are a certified gasfitter. Here is how that works.