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🔍 Troubleshooting Wizard

AC Troubleshooting Wizard

Describe your AC symptoms and get a prioritized list of likely causes and recommended
next steps — before calling a technician.

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AC Troubleshooting Wizard
Which AC issue are you having? Answer a few quick questions to help identify the most likely cause of your air conditioner problem and what to do next.
When you check your thermostat, what do you notice?
What sound do you hear from your AC unit?
How is the airflow from your vents?
When did you last have professional maintenance?
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🔍 Diagnosis Ready
AC Troubleshooting Results
Most Likely Cause
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Our diagnosis is a starting point. A certified HVAC technician can confirm the issue and fix it right the first time.

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Common AC Problems & Causes

AC Running But Not Cooling

Low refrigerant due to a leak
Dirty or frozen evaporator coil
Blocked condenser coils (outdoor unit)
Failed compressor
Thermostat set incorrectly

AC Making Unusual Noises

Banging/clanking: loose or broken internal component
Squealing: worn fan belt or motor bearing
Hissing: possible refrigerant leak
Clicking: relay or electrical control issue

AC Leaking Water

Clogged condensate drain line
Frozen evaporator coil that has thawed
Cracked drain pan

DIY Checks Before Calling a Technician

✅ Check These First (No Tools Required)
Replace or clean your air filter (every 1–3 months)
Check thermostat — set to “Cool” and below room temperature
Check circuit breaker for a tripped breaker
Clear debris from around the outdoor unit (maintain 2 ft clearance)
Check that all supply and return vents are open

When to Call an HVAC Technician

AC is blowing warm air after checking filter and thermostat
You hear hissing sounds (potential refrigerant leak)
Water is leaking from the indoor unit
The system won’t turn on after checking breakers
The system hasn’t been serviced in over 2 years

Frequently Asked Questions

Why is my AC freezing up?

Ice forming on your AC is almost always caused by restricted airflow or low refrigerant. Check your air filter first — a clogged filter is the most common cause.

Signs include: barely cool air, ice on the unit, hissing sounds, and the home taking unusually long to cool. If levels are low, there is a leak that must be repaired — refrigerant doesn’t get ‘used up’.

On very hot days (above 30°C) it’s normal. If the AC runs continuously without reaching set temperature on a moderate day, the system may be undersized or have a refrigerant issue.

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💰 Rebates Available

Canadian homeowners may qualify for up to $5,000 in federal and provincial rebates on qualifying systems.