Heat pumps do work harder in freezing conditions. They extract heat from the outside air and transfer it into your home to maintain warmth. Even at extremely low temperatures, the refrigerant continues to circulate, drawing heat from the outside. The process is straightforward: air flows over an evaporator coil, where the refrigerant absorbs heat. Even in sub-freezing temperatures, heat energy remains in the air for the pump to utilize.
This is why heat pumps don’t simply shut down or freeze in cold weather. The refrigerant effectively operates, ensuring your home remains warm even when the temperature plummets.

Replacing your HVAC system with a heat pump can be a highly efficient and environmentally friendly option compared to traditional gas boilers. Before replacement, consider the type of heat pump, the climate, and your home’s insulation before making the switch. Consulting with a professional can help ensure the right installation and optimal performance.

Maintaining a heat pump is essential for its efficiency, longevity, and reliable performance.
Regular maintenance tasks include replacing filters every 1 to 3 months. Dirty filters restrict airflow, which reduces efficiency and increases energy costs. It’s also important to clean the coils annually; both the indoor and outdoor coils should be washed to remove dust and debris that can impede effective heat exchange.
Another necessary task is inspecting the ductwork, which should be done every year or two, to ensure there are no leaks or blockages that could affect airflow and overall efficiency. Checking refrigerant levels annually during professional maintenance is also critical; low refrigerant can indicate a leak, which negatively impacts performance.
Additionally, the outdoor unit should be cleaned twice a year, typically in spring and fall, to remove leaves, dirt, and any other debris that could obstruct airflow. Inspecting the fan annually is essential to ensure it operates correctly, is free of debris, and does not produce unusual noises. Lastly, check the thermostat once a year to confirm it functions properly to optimize temperature control.
When troubleshooting common issues, pay attention to unexpected noises. If you hear banging, rattling, or grinding, contact a professional, as these could indicate mechanical failures. Reduced airflow may signify the need for filter replacement or potential blockages in the ductwork or outdoor unit. Increased energy bills can also point to maintenance issues or inefficiencies in the system.