Yes, you can manually assist in defrosting an outdoor heat pump if it has become heavily encased in a solid block of ice during freezing winter weather. However, you should never use sharp metal tools like screwdrivers, knives, or ice picks to chip away the ice, as doing so can easily puncture the delicate copper tubing and cause expensive refrigerant leaks. Instead, switch your indoor thermostat from heating to Emergency Heat to turn off the outdoor compressor and engage backup indoor auxiliary electric heaters. Then, gently pour lukewarm tap water—never boiling water, which causes thermal shock—over the exterior coil fins to accelerate the melting process. Additionally, you can clear snow drifts and debris blocking airflow. You can verify success when all ice is gone and normal defrost or heating cycles resume.
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