When winter brings cold nights, parts of your air conditioning system can freeze. Ice in drain lines, on cooling components, or around outdoor units can stop your system from working. This can cause indoor leaks when it thaws, and lead to expensive repairs. Here’s a simple guide to what to watch for and how to protect your home.
Why Pipes Freeze
Cold air can make water in aircon drain pipes freeze and expand, risking cracked pipes or joints. This most often affects runs in unheated or exposed areas such as roof spaces, garages, external walls or near windows and doors. Damage commonly appears when frozen sections thaw and release built-up pressure.
How Freezing Affects The Aircon
Cold weather can cause water that normally drains away in warmer weather to freeze in pipes or trays. Cooling parts can form ice if they get too cold, and outdoor units can collect frost. Any ice buildup increases the risk of system shutdowns and water damage when it melts.
Signs of a Freezing Problem
- Visible ice on the indoor unit, outdoor unit, or pipes.
- Reduced or uneven cooling/heating in rooms.
- The system repeatedly switches off or won’t restart.
- Water appearing indoors after ice has thawed.
- Repeated alarms or safety shutdowns.
Simple Preventative Steps to Reduce Risk
- Keep an eye on your system during cold snaps and report any ice or leaks.
- If the unit is not cooling/heating properly or is cycling on and off, contact a professional.
- Make sure any indoor water leaks are checked promptly to prevent damage.
When to Call Us
Contact us right away if you see ice, water leaks, or your aircon has stopped working. Early action limits damage and gets your system back to normal faster.
Schedule a Winter Check
A professional winter check can identify problems before they cause breakdowns, but it can also help spot mould issues, especially during cold weather. Book a winter inspection with JC Refrigeration Cape to keep your AC reliable and protect your home from freeze-related damage.