Your air conditioner just stopped working and the technician is quoting you a repair that feels steep. Should you fix it — or take the plunge and replace the whole system? It's one of the most common questions we hear from homeowners across Newmarket, Aurora, and the rest of York Region.
The answer depends on a handful of factors that are easy to weigh once you know what to look for. Here's the framework we walk our customers through every time.
The 50% Rule
This is the simplest starting point. If the repair cost exceeds 50% of the price of a new unit, it usually makes more financial sense to replace. A $2,500 compressor swap on a 14-year-old system? That money is almost always better put toward a new, higher-efficiency unit that comes with a fresh warranty.
Keep in mind that the "price of a new unit" includes installation. For a standard central AC in Ontario, that typically runs between $4,500 and $7,500 depending on size, brand, and SEER rating.
Age of the System
Modern central air conditioners last roughly 15 to 20 years with proper maintenance. Once a unit crosses the 12-year mark, repair costs tend to climb — and each fix buys less remaining lifespan.
- Under 8 years: Almost always worth repairing. The system has significant life left.
- 8–12 years: Evaluate on a case-by-case basis. Minor fixes are fine; major component failures warrant a closer look.
- 12+ years: Lean toward replacement, especially if this isn't the first major repair.
Refrigerant Type Matters
If your system runs on R-22 (Freon), replacement is strongly recommended. R-22 was phased out in Canada and the U.S. as of January 2020. The refrigerant is no longer manufactured, which means the cost of sourcing it for a recharge has skyrocketed — and will only go up.
All new systems use R-410A or newer refrigerants that are more efficient and environmentally compliant. Switching to a modern system eliminates this ongoing cost risk entirely.
Frequency of Breakdowns
A single repair on an otherwise healthy unit is no reason to panic. But if you've called for service two or more times in the past two cooling seasons, the system is telling you something. Recurring breakdowns usually signal cascading wear across multiple components — and the next failure may be right behind this one.
Energy Bills Are Climbing
Older units lose efficiency over time, even with regular maintenance. If you've noticed your energy bills creeping up without a corresponding change in usage, the compressor or other key components may be degraded beyond what a tune-up can fix.
A new system with a 16+ SEER rating can reduce cooling costs by 20–40% compared to an older 10 SEER unit. Over five to seven years, the energy savings alone can offset a significant chunk of the replacement cost.
Comfort and Performance
Beyond dollars and cents, consider how well the system is actually working:
- Are some rooms significantly warmer than others?
- Does the unit short-cycle (turn on and off frequently)?
- Is it noisier than it used to be?
- Does it struggle to keep up on the hottest days?
If you're experiencing multiple comfort issues alongside a repair need, replacement will solve both problems at once.
What to Ask Your Technician
Before making a decision, ask these questions:
- "What's the expected remaining lifespan if we do this repair?" — A good tech will give you an honest range.
- "Is this a symptom of a larger issue?" — A failed capacitor is cheap. A failed capacitor caused by a dying compressor is not.
- "What would a comparable new system cost, installed?" — Get the comparison number so you can apply the 50% rule.
- "What SEER rating would you recommend for my home?" — The answer should be tailored to your square footage and budget, not a one-size pitch.
At AC Experts, we walk through every one of these points before recommending a path. We don't push replacements when a repair makes sense — and we'll tell you straight when a repair is just delaying the inevitable.