Is your home not cooling the way it used to? It might be time for an AC replacement. Many homeowners in Chatham-Kent, Sarnia, Windsor, and St. Thomas delay replacing their AC until it breaks down completely—but waiting too long can cost you more in repairs and energy bills.
In this post, we’ll walk through the most common signs that tell you it’s time to replace your AC, the benefits of upgrading to a new air conditioner, and what to expect from the process. If you’re unsure where to start, Postma is here to help with honest advice and expert service.
Still not sure if your system needs a repair or full replacement?
Read our full guide on AC repairs in Chatham-Kent to compare the signs and make the right call for your home.
Your AC Is Over 10–15 Years Old
Modern air conditioners are built to last—but not forever. If your unit is over 10 years old, it’s likely using outdated refrigerants and consuming more energy than necessary. Older systems are also more prone to breakdowns and typically lack the efficiency ratings of today’s models.
According to Natural Resources Canada, upgrading to a high-efficiency air conditioner can help reduce your energy bills and environmental impact.
How Long Do Air Conditioners Last in Southwestern Ontario?
With our mix of hot summers and humid conditions, most units in our service area last around 12–15 years if properly maintained.
Repairs Are Becoming Frequent and Expensive
If you’re calling for AC repairs more than once a season, your system may be on its last legs. Frequent breakdowns are a sign that components are wearing out and that you might save more in the long run by investing in a replacement.
AC Repair vs. Replacement—Which Saves More?
If the repair costs are over 50% of what a new air conditioner would cost, replacement is usually the better option.
How much does a new air conditioner cost in Ontario?
On average, expect to pay between $3,500 and $7,500, depending on the size of your home and system features.
Can I finance my air conditioner replacement?
Yes—Postma offers flexible financing options so you don’t have to sweat a big upfront cost.
Do I need to replace my furnace at the same time?
It depends on your setup. If your furnace is old or incompatible with a new high-efficiency AC, replacing both can improve long-term efficiency.
Energy Bills Keep Climbing
A steady rise in your electricity bill—even though your usage hasn’t changed—can be a clear indicator of an inefficient AC. Today’s energy-efficient air conditioners use far less power while cooling more effectively.
What Makes New AC Units More Efficient?
High SEER ratings, smart thermostats, and inverter technology help reduce energy consumption and improve performance.
Inconsistent Temperatures and Poor Airflow
Are some rooms too hot while others are too cold? Poor airflow or uneven temperatures can indicate duct problems—or a failing AC system. Newer systems are designed to distribute air more evenly across your home.
Your AC Uses R-22 Refrigerant (Freon)
If your system still uses R-22, it’s time to upgrade. R-22 has been phased out in Canada, meaning repairs requiring this refrigerant are not only costly—but nearly impossible.
This phase-out is part of Ontario’s Regulation 189/94 under the Environmental Protection Act, which outlines strict guidelines for handling and servicing ozone-depleting substances like R-22.
What Refrigerant Replaces R-22?
Most new air conditioners use R-410A or newer alternatives that are more efficient and eco-conscious.
Strange Noises, Smells, or Leaks
Unusual noises (like grinding or squealing), unpleasant smells, or moisture around your system are all red flags. These may signal internal damage, mould growth, or refrigerant leaks—all of which are serious concerns that may warrant replacement.
Why Choose Postma for Your AC Replacement?
Whether you’re in Chatham-Kent, Windsor, Sarnia, or St. Thomas, we’ve been helping local homeowners for 35+ years. Whether you’re ready for a new air conditioner or just need advice, we offer honest guidance, professional installation, and service you can trust. Ready for an AC replacement, or interested in a free, no-obligation quote? Contact us — or visit us at www.postma.ca to learn more.
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📲 Text us at 226-702-2071