Why Is My Heat Pump Not Cooling in Summer?
BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning provides expert advice on this common question for homeowners in Greater Vancouver. If you need professional service, our licensed technicians are available across the region.
Related Services from BC Wide
BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning provides comprehensive heat pump service across Greater Vancouver, including diagnostic inspections, emergency repairs, scheduled maintenance, and system replacement. Our Red Seal certified technicians service all major brands and carry OEM parts in their vehicles. For emergency service related to this question, call (604) 330-3953.
When to Call a Professional for Help
While understanding the answer to this question is helpful, some situations require professional expertise. If you are uncertain about any step, if the problem recurs, or if you notice any signs of gas odour, carbon monoxide, or electrical hazards, contact BC Wide Home Services Ltd, doing business as BC Wide Heating & Air Conditioning immediately. Our licensed technicians across Greater Vancouver can provide expert diagnosis and repair. We recommend professional service for any issue that involves gas, electrical components, or safety-critical systems.
Answer: Why Is My Heat Pump Not Cooling in Summer?
If your heat pump is not cooling your home in summer, several issues could be at play. Low refrigerant charge (from a slow leak) is a common cause — the heat pump cannot absorb and reject heat effectively without the correct charge. A dirty outdoor coil prevents proper heat rejection, while a dirty indoor coil or air filter restricts airflow and reduces cooling capacity. The reversing valve may be stuck in heating mode, preventing the unit from switching to cooling. Check your thermostat to ensure it is set to cooling mode with the temperature set below room temperature. If the unit runs but does not cool, professional service is needed to diagnose and repair the issue.
Safety Reminder
If you smell gas, suspect carbon monoxide or believe there is an immediate danger, leave the property and contact emergency services or the appropriate gas emergency authority. Do not remain inside — exit the building immediately and call for help from outside.