Lakewood Filters Inc - Milwaukee's Certified HVAC Services

In our climate, ice buildup is often caused by restricted airflow from dirty filters or blocked vents, low refrigerant levels, or a malfunctioning defrost cycle. These issues force your system to work harder in the cold, leading to condensation that freezes on the coils. Our technicians perform a comprehensive diagnostic to pinpoint the exact cause, whether it's a simple filter change or a more complex refrigerant charge issue.

A frozen heat pump will struggle to heat your home efficiently and can cause significant damage if it continues to run. It's best to turn the system to 'emergency heat' or 'off' at the thermostat and call for service. Running it while frozen can burn out the compressor. We'll safely thaw the unit, diagnose the root cause—like a faulty defrost sensor or low refrigerant—and get your reliable heat restored.

Preventative maintenance is key. We recommend seasonal check-ups, especially before winter. This includes cleaning coils, checking refrigerant levels, ensuring proper airflow by replacing filters monthly, and verifying the defrost control board and sensors are functioning correctly. Our maintenance plans are designed specifically for local conditions to prevent ice-related failures and keep your system running efficiently all season.