Professional diagnosis for air conditioners that are not cooling correctly, cycle unexpectedly or show unusual operating behaviour.
Richmond service area: We diagnose and repair air conditioning systems throughout Richmond — including Steveston, Broadmoor, Seafair, Terra Nova and East Richmond. Richmond's housing mix includes established detached homes, townhomes and renovated properties with varied cooling configurations: central AC on existing forced-air systems, ductless mini-splits, and heat pumps operating in cooling mode. We work across all system types and makes.
What We Fix
Cooling faults in Richmond homes range from straightforward component failures to issues rooted in ductwork or the existing distribution system. These are the conditions we most commonly diagnose.
The system operates but the home doesn't reach setpoint or stays warm. Common causes include low refrigerant from a leak, a dirty evaporator coil, a failed compressor or a faulty capacitor. In Richmond's warmer summer periods, a system operating at reduced capacity may still produce some cooling — masking the fault until temperatures peak.
Low output at registers, reduced airflow throughout the home, or noticeably different temperatures between rooms. Often linked to a clogged air filter, a blocked evaporator coil, a deteriorating blower motor or duct restrictions. In renovated Richmond homes where ductwork has been modified, supply/return imbalances can concentrate cooling in one area while another remains warm.
The unit turns on and off in short intervals rather than completing a full run cycle. Short-cycling can result from a refrigerant pressure issue, a freezing evaporator coil (from restricted airflow), an oversized unit, or a control/thermostat fault. It stresses the compressor over time and should be diagnosed promptly.
The system doesn't respond to calls, runs continuously, or shows error codes. Wiring faults, failed control boards, low-voltage issues and thermostat calibration drift can each produce these symptoms. Diagnosis distinguishes between a thermostat fault and an equipment control fault before repair is recommended.
Pooled water near the air handler, moisture around the indoor unit, or a backed-up drain line. A clogged condensate drain is common and can lead to water damage if not cleared. A frozen coil that has thawed also produces pooling — if the coil was icing due to restricted airflow or low refrigerant, the underlying cause needs to be addressed.
Banging, grinding, rattling or squealing from the indoor or outdoor unit, or an air conditioner that won't start on a call. Loose components, worn bearings, failing fan motors, seized compressors and electrical faults (capacitor, contactor) can each produce these conditions. A unit that doesn't start should be checked rather than reset repeatedly.
Refrigerant handling is regulated. Only certified technicians may purchase or handle refrigerants under Canadian regulations. If you suspect a leak — the system isn't cooling despite running, or you notice an oily residue near line connections — do not attempt to add refrigerant yourself. Leak location, repair and verified recharge are part of our service.
Decision Guide
Most AC faults are repairable. Replacement becomes the relevant conversation when repair cost, system age and condition point in that direction together.
If the technician recommends replacement, we can discuss the options suited to your Richmond home. See our AC Installation Richmond page or central AC installation overview for what that process involves.
FAQ
Contact us to discuss the symptoms and schedule a diagnostic service call.
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