Should You Cover Your Heat Pump in Winter?
You should not completely cover your heat pump in winter. While it might seem like a good idea to protect your heat pump from snow and ice, fully covering it can actually cause damage. Heat pumps are designed to work in cold weather and need proper airflow. However, you can use a partial cover that shields just the top from heavy snow while leaving the sides open. The best way to protect your heat pump from snow is to keep it clear of snow buildup, maintain at least 18 inches of clearance around it, and gently remove ice when needed.
Table of Contents
| Heat Pump Winter Protection Method | Recommended? | Why? |
|---|---|---|
| Full cover (wrapping entire unit) | No | Restricts airflow, causes overheating, voids warranty |
| Partial cover (top only) | Yes | Protects from heavy snow while allowing airflow |
| Regular snow clearing | Yes | Maintains efficiency and prevents damage |
| Elevated platform/stand | Yes | Keeps unit above snow line |
Why You Shouldn’t Fully Cover Your Heat Pump
Many homeowners wonder if they should cover their heat pump in winter. It seems logical that protecting your outdoor unit from snow and ice would be helpful. However, completely covering your heat pump can cause serious problems.
Heat pumps are built to operate in cold weather. They need constant airflow to function properly. When you fully cover a heat pump, you block this necessary airflow.
Problems with Fully Covering Heat Pumps
When you completely cover your heat pump in winter, several issues can arise:
- Restricted airflow – Your heat pump needs to breathe. A full cover blocks the air exchange that’s essential for operation.
- Moisture buildup – Covers can trap moisture against the unit, leading to rust and corrosion of important components.
- Potential overheating – If your heat pump turns on while fully covered, it can overheat quickly, causing damage to the system.
- Voided warranty – Many manufacturers specifically state that fully covering units voids the warranty because of the damage it can cause.
- Animal nesting – Full covers create a warm, protected space that’s attractive to small animals looking for winter shelter. These critters can damage wiring and components.
When Partial Covers Make Sense
While fully covering your heat pump is not recommended, using a partial cover can be beneficial in certain situations. A partial cover protects the top of the unit from heavy snow while leaving the sides open for proper airflow.
Types of Partial Heat Pump Covers
There are several options for partially covering your heat pump:
- Heat pump snow covers – These are specially designed covers that shield just the top of the unit.
- Heat pump canopies – These elevated covers provide protection from above while allowing complete airflow around the sides.
- DIY solutions – A simple piece of plywood with bricks to hold it in place can work as a basic snow shield.
When using any type of cover, make sure it’s secured properly so it won’t blow away in strong winds. The cover should never touch the sides of the unit or restrict airflow in any way.
Protecting Your Heat Pump from Snow
Instead of fully covering your heat pump, focus on protecting it from snow accumulation. Snow buildup can reduce efficiency and potentially damage your system.
Clearing Snow from Your Heat Pump
Regular snow clearing is the best way to protect your heat pump in winter. Here’s how to do it safely:
1. Clear snow after each significant snowfall.
2. Use a soft brush or broom to gently remove snow from the top and sides.
3. Never use sharp tools that could damage the fins or coils.
4. Create a path around the unit so you can easily access it for maintenance.
5. Keep at least 18 inches of clearance around all sides of the unit.
Dealing with Ice on Your Heat Pump
Ice can form on your heat pump during winter operation. This is normal to some extent, as the unit goes through defrost cycles. However, excessive ice buildup needs attention:
1. Never chip ice off with sharp tools.
2. If ice is minimal, let the defrost cycle handle it.
3. For heavy ice, you can pour warm (not hot) water over the unit.
4. If your heat pump consistently develops heavy ice, contact a professional as this may indicate a problem.
Ideal Heat Pump Placement for Winter Protection
The location of your heat pump plays a big role in how well it handles winter conditions. If you’re installing a new system or can relocate your current one, consider these placement tips:
- Install the unit on the south-facing side of your home where it will get more sun.
- Place it under a roof overhang for natural protection from falling snow.
- Mount the unit on brackets on an exterior wall to keep it above the snow line.
- Install it on a stand or platform that’s at least 8-12 inches above ground level.
- Avoid areas where snow tends to drift or where runoff from the roof will fall directly onto the unit.
Proper placement can significantly reduce the need to cover your heat pump in winter or clear snow from it frequently.
Maintaining Heat Pump Efficiency in Winter
Beyond protecting your heat pump from snow, there are several ways to ensure it runs efficiently during cold weather:
Regular Maintenance Tasks
1. Keep the area clear – Remove leaves, twigs, and debris that can block airflow.
2. Check for damage – Inspect the unit regularly for signs of damage to the fins, coils, or housing.
3. Listen for unusual noises – Strange sounds may indicate ice buildup or other problems.
4. Monitor performance – If your home isn’t heating properly, your heat pump may need attention.
5. Schedule professional maintenance – Have your system serviced before winter begins.
Improving Overall System Performance
Your heat pump works as part of a complete heating system. To reduce strain on the unit during winter:
1. Seal air leaks around windows and doors.
2. Add insulation to your attic and walls.
3. Use ceiling fans to circulate warm air.
4. Keep indoor vents clear of furniture and obstructions.
5. Consider using a programmable thermostat designed for heat pumps.
These steps help your heat pump work less hard, reducing the chance of problems during cold weather.
Signs Your Heat Pump Needs Professional Attention
Even with proper care, heat pumps can develop issues during winter. Watch for these warning signs:
- The unit runs constantly without reaching the set temperature.
- Unusual noises like grinding, scraping, or banging.
- Ice that doesn’t melt during defrost cycles.
- Significantly higher energy bills.
- The system blows cold air when it should be heating.
- Water pooling around the base of the outdoor unit.
If you notice any of these issues, don’t try to fix them yourself. Contact a qualified HVAC professional who can safely diagnose and repair your heat pump.
Alternative Snow Protection Methods
If you’re concerned about protecting the heat pump from snow but don’t want to use a cover, consider these alternatives:
Heat Pump Shelters and Canopies
Heat pump shelters provide overhead protection while allowing complete airflow around the sides. These can be:
1. Manufactured shelters – Purpose-built structures designed specifically for heat pumps.
2. Custom-built canopies – Simple structures made from weather-resistant materials.
3. Awnings or extensions – Additions to your home’s existing roof that extend over the unit.
Elevation Solutions
Raising your heat pump above the snow line is an excellent protection strategy:
1. Heat pump stands – Metal or plastic platforms designed specifically for outdoor units.
2. Wall brackets – Mounting systems that attach the unit to an exterior wall.
3. Concrete pads – Raised foundations that lift the unit above ground level.
These solutions keep your heat pump above snow accumulation while maintaining proper airflow.
Common Myths About Heat Pumps in Winter
There are several misconceptions about how to cover your heat pump in winter. Let’s clear these up:
Myth 1: Heat pumps can’t work in very cold weather
Modern heat pumps are designed to operate efficiently even in below-freezing temperatures. Many newer models can provide heat in temperatures as low as -13°F (-25°C).
Myth 2: Covering the heat pump saves energy
Covering your heat pump doesn’t improve its efficiency. In fact, it can reduce efficiency by restricting airflow and causing the system to work harder.
Myth 3: Heat pumps need to be turned off during snowstorms
Heat pumps can operate safely during snowfall. The heat they generate will actually help melt snow that lands on them. Just make sure to clear accumulated snow after the storm.
Myth 4: Ice on a heat pump always indicates a problem
Some ice formation is normal during winter operation. Heat pumps have built-in defrost cycles to handle this. Only persistent or excessive ice is cause for concern.
Frequently Asked Questions
Can I use a tarp to cover my heat pump?
No, you should not use a tarp to completely cover your heat pump. Tarps block airflow and trap moisture, which can damage your unit. If you want to protect the top from heavy snow, use a rigid cover that sits several inches above the unit and leaves the sides completely open.
How much snow is too much for a heat pump?
Any snow that blocks the sides of your heat pump is too much. Even a few inches of snow can reduce efficiency. The top of the unit can handle a light dusting, but anything more should be removed to ensure proper operation.
Will running my heat pump in winter damage it?
No, heat pumps are designed to run in winter conditions. In fact, not running your heat pump can be worse as it prevents the unit from going through its normal defrost cycles. Regular operation helps keep ice from building up excessively.
Should I turn off my heat pump during a snowstorm?
It’s not necessary to turn off your heat pump during a snowstorm. The unit is designed to operate in snowy conditions. However, after the storm, you should clear any accumulated snow from around the unit to maintain efficiency.
How can I protect my heat pump from falling icicles?
Install your heat pump away from roof edges where icicles form, or add a protective shield or awning above the unit. Regularly remove icicles from your roof to prevent them from falling onto the heat pump.
Best Practices for Winter Heat Pump Care
Protecting your heat pump in winter doesn’t mean covering it completely. Instead, focus on keeping it clear of snow and ice buildup. Regular maintenance and proper placement are more effective than covers for ensuring efficient operation.
Remember that heat pumps are designed to work in cold weather. With proper care, your system will provide reliable heating throughout the winter season while maintaining energy efficiency.
If you’re unsure about how to properly maintain your heat pump this winter, don’t take chances. Contact Shipton’s Heating & Cooling to schedule a professional inspection and maintenance service. Our experts can ensure your system is ready for whatever winter brings and help you avoid costly repairs down the road.