If you’ve ever noticed your heat pump blowing cold air when it’s supposed to be heating, you might think something is wrong.
But don’t worry—this is actually a normal part of how your heat pump operates in cold weather! Let’s break down why this happens and what you should expect.
Defrost Cycle: How your heat pump stays efficient
When outdoor temperatures drop, the heat pump’s outdoor unit can accumulate ice. To continue working efficiently, your heat pump needs to clear this ice. This is where the defrost cycle comes in.
During defrost mode, the heat pump temporarily reverses, sending heat to the outdoor unit to melt the ice. While this happens, cooler air may come through your indoor vents for a short time. Once the ice is cleared, your heat pump switches back to normal heating mode.
How long does the defrost cycle last?
The defrost cycle usually lasts anywhere from a few minutes to around 15 minutes, depending on outdoor conditions. During this time, your heat pump isn’t broken—it’s simply ensuring it can continue providing heat efficiently.
What do I do?
In short: not much! This is a normal process and ensures your heat pump keeps working efficiently.
In saying that, there is one thing you should keep an eye on - it's always important to ensure the outdoor unit is kept clear. Keep leaves, snow, or debris away from the outdoor coil so it can function properly.
We've even had cases of rats and other vermin making homes inside the outdoor unit - not pleasant! ❌
When to call a professional
While occasional cool air from your heat pump is normal in winter, if you notice that it’s blowing cold air for extended periods or your home isn’t staying warm, it might be time for a professional check-up.
As a trusted, family-owned electrical and heat pump business, we’re here to help! If you have concerns about your heat pump’s performance, get in touch with us today. We’ll ensure your system is running efficiently so you stay warm all winter!