WHY IS MY HEAT PUMP COIL FREEZING? HERE'S WHAT TO DO
Noticed ice building up on your condo’s heat pump coil? Don’t panic—but don’t ignore it either. A frozen coil usually signals an airflow restriction or refrigerant imbalance. Left unchecked, it can lead to system damage, costly repairs, and reduced comfort.
Here’s a step-by-step guide on how to handle it safely—and when to call in a pro.
Step 1: Turn Off Your Heat Pump
As soon as you see ice forming, shut off your heat pump. Running the system while frozen can damage the compressor or internal components. This step helps prevent further strain.
Step 2: Defrost the Coil (and Protect Your Floors)
Before you start defrosting, take a moment to protect your flooring:
Lay down towels or rags around the base of the unit. As the ice melts, water can drip onto the floor. This can damage hardwood and, in condos, potentially leak into the unit below.
Then choose one of these safe defrosting methods:
Switch to Fan Mode: Set your thermostat to “Fan Only.” This circulates warm indoor air over the coil and speeds up the melting process.
Use a Hair Dryer: In a rush? Use a hair dryer on low heat to gently melt the ice. Keep it moving—avoid sharp tools or high heat that can damage the coil fins.
Step 3: Check Your Air Filter
One of the most common causes of coil freezing is restricted airflow, often due to a dirty air filter.
Remove the filter and inspect it. If it looks dusty or clogged, replace it.
For best performance, filters should be changed every 1–3 months, depending on use.
Step 4: Inspect the Fan and Airflow
The system fan plays a critical role in keeping airflow moving across the coil.
Ensure the fan is running smoothly—listen for unusual noises.
Check for blocked vents or anything restricting airflow.
If the airflow feels weak or uneven, that could be contributing to the freezing issue.
Step 5: Know When to Call the Pros
If the coil continues freezing up—or you’re unsure what’s causing the issue—it’s time to call a licensed HVAC technician. The root cause could be:
Low refrigerant levels
Faulty sensors or thermostat
Blower motor issues
Internal mechanical problems
A professional can safely diagnose the system and restore performance without causing further damage.
Don’t Ignore a Freezing Coil
Even a small amount of ice is a warning sign. Acting quickly can help you:
Prevent water damage and leaks
Avoid high energy bills
Extend the life of your system
Keep your condo comfortable year-round
Need Help Right Away?
Contact our team for fast, reliable heat pump service—especially for condo units.