As winter approaches, many homeowners ask themselves: should a pool heat pump be covered during the winter? Between snow, frost, and the risk of damage, this question deserves a clear answer. Heat pumps are fragile and expensive pieces of equipment. Protecting them properly during the cold season directly affects their durability and the proper functioning of the pool’s filtration and heating system. Although some people think they can leave them uncovered, experience shows that taking a few precautions can prevent costly repairs and prolonged interruptions when restarting in the spring.

Why should you cover your pool heat pump in the winter?

Covering your heat pump is not just a formality. Several factors make this a wise precaution:

Snow and ice can damage the pump housing or fan.
Freezing residual water in the pipes and pump can cause cracks.
A heat pump exposed to wind, rain, and cold weather will wear out faster, even when it’s not freezing.
Leaves, branches, and debris can clog the inlet and outlet, block the valves, and cause damage when restarting in the spring.
A properly protected heat pump maintains its performance and avoids unexpected expenses for replacement or repair.

What should you use to cover your pool heat pump in winter?

There are several solutions for protecting your equipment during the cold season:

Custom-made covers: Custom heat pump covers made of 14-, 16-, or 18-ounce vinyl fit perfectly over the heat pump and reduce the amount of water and debris that gets in. Toiles GR offers models that are resistant to wind and the weight of snow and ice.
Styrofoam or insulating panels: Placed around the pump, they reduce thermal shock.
Solar cover: Used as a supplement, it limits condensation and protects against residual winter UV rays.

It is best to avoid tarps that are too large or poorly secured, as they can retain water and the weight of snow, creating a risk of breakage.

Steps to cover and winterize your pool heat pump

To ensure effective protection, follow this step-by-step method:

Turn off and unplug the heat pump.
Drain the water from the pipes and the unit. Use plugs and valves to isolate the system.
Add pool-specific antifreeze to the pipes and filter if necessary.
Remove all debris from on and around the pump, as well as from the skimmer and bottom drain.
Cover the heat pump with a sturdy cover, making sure it fits snugly to prevent snow and ice buildup.
Check connections and valves to ensure that everything is properly closed and insulated.

This procedure limits the risk of damage and simplifies restarting in the spring.

When should you prepare your pool and heat pump for winter?

Timing is key. It is advisable to prepare your pool for winter when the water temperature reaches around 10°C. Closing the pool as late as possible allows you to extend the swimming season while preventing the water from freezing in the equipment. For spas, winterization can be done slightly earlier, depending on how often they are used and exposure to wind.

What steps should be taken before covering your heat pump for the winter?

Before covering your pool heat pump:

Clean the pool: remove leaves from the bottom and around the skimmer (installing a pool leaf net can be very useful).
Adjust the pH and water chemistry to prevent algae growth and corrosion of pipes and filters.
Drain or lower the water level according to the instructions in the winterization kit.
Backwash or counter-current wash the filter to remove debris.
Disconnect the water heater and pumps and remove the pipes to prevent cracks when it freezes.

These steps ensure that the heat pump and other equipment remain intact throughout the winter after your pool is closed.

The risks of leaving your pool heat pump unprotected

Not covering your heat pump poses several dangers:

Cracks caused by frozen water in the filtration system.
Damage to the housing and fan blades due to snow and ice.
Blockage of the inlet and outlet, causing breakage when restarting.
Accelerated deterioration of electrical components and pipes, reducing the pump’s service life.

Even in relatively mild climates, cold combined with humidity can cause micro-cracks that appear in the spring.

Is there a difference between heat pumps for above-ground and in-ground pools?

Yes. Above-ground and in-ground pools require slightly different approaches:

Above-ground pools: Heat pumps are often more exposed to wind and require a well-fitting cover, sometimes accompanied by Styrofoam panels to stabilize the cold.
In-ground pools: The equipment is sometimes protected by boxes or shelters, but protection with a cover is still recommended, especially for valves and external pipes.

Pool closing methods and the use of the closing kit differ slightly depending on the type, but the principle remains the same: insulation, frost protection, and maintenance of water chemistry before winter.

Key points to remember

Covering your heat pump reduces the risk of damage from freezing, snow, and debris.
Using a high-quality, custom-fit 14-, 16-, or 18-ounce vinyl cover provides the best protection.
Preparing your pool and equipment step by step ensures a smooth closing process.
The timing for winterizing your pool and heat pump depends on the water temperature and how long you want to use it.
The differences between above-ground and in-ground pools influence the protection method, but a cover is essential for both.

Call on a specialist in custom-made protective covers for heat pumps

Don’t let snow and ice damage your heat pump. Calling on specialists in high-quality custom-made tarps and covers guarantees you optimal protection. A well-chosen cover, tailored to the size and type of your heat pump, will extend its life, protect your pipes and valves, and make it easier to restart in the spring. To enjoy a ready-to-use pool and avoid costly surprises, choose custom solutions designed by professionals like Toiles GR.