Air Conditioning Repair & Installation in Guelph
Guelph summers run hot and humid, and central AC systems that limp through spring often fail on the first real heat wave — exactly when demand for service spikes. Common failures we see: a weak or seized capacitor (the AC hums but the fan won't spin), low refrigerant from a slow leak, a frozen evaporator coil from restricted airflow or a dirty filter, and outdoor condenser coils caked with cottonwood fluff and lawn debris that choke heat rejection.
For full installs, sizing matters as much as brand — an oversized AC short-cycles and leaves the house clammy even though it's "cold," while a properly sized system runs longer cycles that actually dehumidify. We size to your home, not just the old unit's tonnage.
- Diagnostics for weak cooling, ice buildup, and no-start faults
- Refrigerant leak detection and repair (R-410A systems)
- Proper load-sized installs, not just tonnage-matched to the old unit
- Coil cleaning and airflow correction as part of every service call
What it costs in Guelph
- Diagnostic + minor repair (capacitor, contactor): $250–$450
- Refrigerant leak repair + recharge: $400–$900 depending on leak location
- New central AC, installed: $4,500–$8,000 depending on size and ductwork
- Iced-up systems need to fully thaw before an accurate diagnosis — we'll walk you through that on the call
Air Conditioning Repair & Installation FAQs
Why is my AC running but not cooling the house?
Most common causes: a dirty filter or blocked vents restricting airflow, low refrigerant from a leak, or an iced evaporator coil (often caused by one of the first two). Turning the system off to let ice fully melt before we arrive speeds up an accurate diagnosis.
How often should I get my AC serviced?
Annually, ideally in spring before the first heat wave — checking refrigerant charge, cleaning coils, and testing electrical components catches small issues before they become no-cool emergencies.
Is it worth repairing an AC over 12–15 years old?
Depends on the failure. A capacitor or contactor: repair, cheaply. A compressor or major refrigerant leak on an older R-22 system (which is being phased out): replacement is usually the smarter call. We'll give you honest numbers on both paths.
Can you install AC on a home that's never had it?
Yes — this is common in older Guelph homes originally built without central air. We assess existing ductwork capacity (sometimes it needs supplementing) and can also quote ductless mini-split options where ducting isn't practical.