Your furnace is one of the most critical appliances in your Calgary home. But how do you know when it’s time to repair vs. replace? Here are five clear signs your furnace may be at the end of its life.
1. Your Furnace Is Over 15 Years Old
The average furnace lifespan in Calgary is 15–20 years. If yours is approaching or past that mark, replacement is often more cost-effective than ongoing repairs. Newer models are significantly more energy-efficient — a high-efficiency furnace (96%+ AFUE) can save 20–30% on your heating bills compared to an older 80% unit.
2. Rising Energy Bills
If your heating costs keep climbing despite consistent usage, your furnace is likely losing efficiency. As components wear out, the system works harder to maintain temperature, burning more gas in the process.
3. Frequent Repairs
A good rule of thumb: if repair costs exceed 50% of the cost of a new furnace, it’s time to replace. Frequent breakdowns also mean unreliable heat — a serious concern during Calgary’s coldest months.
4. Uneven Heating
If some rooms are warm while others stay cold, your furnace may be struggling to distribute heat evenly. This often indicates a failing blower motor or heat exchanger issues.
5. Strange Noises or Yellow Pilot Light
Banging, squealing, or rattling noises suggest mechanical problems. A yellow or flickering pilot light (instead of blue) can indicate a carbon monoxide risk — this requires immediate professional attention.
What to Do Next
If you’re experiencing any of these signs, call MV Pro Mechanical at 403-890-8685 for a free, honest assessment. We’ll tell you whether repair or replacement makes more sense for your situation — no pressure, no upselling.