Winterizing pool technology: What continues to run, what is shut down?
Winter is just around the corner and your pool now needs special attention. However, not all components are switched off completely; some technology continues to work during the cold season. In this guide, you will find out which systems you should shut down and where it is worth continuing to operate them. We will show you how high-quality technology from quality manufacturers can make all the difference.
The pump:
Continue running or shut down?
With conventional pool pumps, the matter is clear: they are switched off in winter and made frost-proof. But modern inverter pumps open up new possibilities.
Energy-saving through the winter with inverter technology
Inverter pumps such as the models from Inverquark can regulate their output continuously between 30 and 120 percent. This means that in winter, the pump runs at minimum speed, keeping the water moving and preventing frost damage while drastically reducing power consumption. The InverSilence technology combines a permanent magnet synchronous motor with intelligent PID control, which optimizes energy consumption in real time. With over 20 years of experience and a service center in Salzburg, the Austrian company offers rapid assistance when service is required.
Advantages in winter operation:
- Up to 80 percent less energy consumption compared to conventional pumps
- Whisper-quiet operation thanks to optimized motor technology
- Control via app enables remote monitoring even in winter
- Soft start protects the mechanics at low temperatures
Filters and heat exchangers:
Quality pays off
The filter system is the heart of the water treatment system. It is usually shut down in winter, but preparation is crucial for a smooth start to the new season.
German precision from Behncke
The Behncke GmbH has been manufacturing filter systems and heat exchangers exclusively in Germany since 1945, which means almost 80 years of experience.
The third-generation family business employs around 100 people at two sites: High-quality stainless steel components and heat exchangers are produced in Hohenbrunn, while filter containers made of glass fiber-reinforced plastic in accordance with DIN EN 16713 are manufactured at the Bühne plant in Saxony-Anhalt.
Checklist for winterizing:
- Empty the filter container completely and carry out backwashing
- Completely drain the heat exchanger on the water side
- Drain all pipes and valves
- Check pressure gauge and pressure switch for frost resistance
- Switch the control unit to winter mode or de-energize it
The durable workmanship of Behncke products is particularly noticeable when it comes to winterizing: High-quality stainless steel connections and precisely manufactured seals withstand repeated temperature changes without any problems.
The pool cover:
Your most important ally in winter
A high-quality cover is not an option, but a must. It protects against soiling, drastically reduces heat loss and can even provide security if designed appropriately.
100 years of experience: roller shutter covers from grando
The grando GmbH from Bergisch Gladbach celebrated its 100th anniversary in 2024: Hubert Granderath founded a joinery in 1924, his son Robert took over the company in 1954 and developed Europe’s first fully automatic swimming pool cover in 1963. Today, Bert and Frank Granderath run the family business together with the next generation around Felix, Frederik, Robin and Lara. grando supplies customers in over 54 countries worldwide.
The special feature of grando covers: Each slat is individually finished by hand in a special three-layer sealing process. Unlike machine-sealed profiles, the covers remain absolutely watertight and airtight even after years of use.
What a grando cover can do in winter:
- Drastic reduction of heat loss via the water surface
- Protection from leaves, snow and dirt
- With appropriate design, load capacity for emergencies
- Operation at the touch of a button, no cranking or folding necessary
The various installation systems (above-ground, in-ground, mobile) allow integration into almost any pool landscape. A suitable solution can even be found for complex pool shapes.
Quality makes the difference
The right preparation for winter determines how smoothly you start the next swimming season. High-quality technology from established manufacturers such as Inverquark, Behncke and grando not only makes winterization easier, but also ensures lower operating costs and less maintenance.
The interaction between the components is crucial: an energy-saving inverter pump keeps the water moving as required, while filtration and heat exchangers are professionally shut down. Meanwhile, the cover does the main work, protecting the pool and reducing energy requirements to a minimum.
Are you unsure whether your pool is optimally prepared for the winter? Find your local bluegardens pool professional now and get a professional winter check. You’re guaranteed a trouble-free start to the next swimming season.
When should I winterize my pool?
The ideal time to winterize the pool is when the water temperature permanently drops below 15 degrees Celsius. In Germany, this is usually the case between October and November. Important: Don’t wait for the first frost, but act in good time.
Can the pool pump continue to run in winter?
With conventional pumps, shutdown is recommended. However, modern inverter pumps such as the models from Inverquark can continue to run at minimum level (30 percent) and thus prevent frost damage. This reduces energy consumption by up to 80 percent compared to normal operation.
Do I have to drain the water from the pool?
No, complete draining is not necessary and is even counterproductive. The water level should be about 10 to 15 centimeters below the inlet nozzles. The water in the pool protects the pool liner from frost damage and UV radiation.
How do I drain the heat exchanger correctly?
The heat exchanger must be completely drained on the water side to prevent frost damage. Open all drain valves and drain the system completely. With Behncke stainless steel heat exchangers, the drainage points are optimally positioned so that no residual water remains.
Which pool cover is suitable for winter?
Automatic roller shutter covers such as the systems from grando are particularly suitable for winter operation. They drastically reduce heat loss, protect against soiling and, with the right design, can even carry a person. The three-layer seal ensures permanent tightness even in the event of extreme temperature fluctuations.
Do I have to add chemicals to the pool water in winter?
Yes, you should carry out a shock chlorination before winterizing and adjust the pH value to 7.0 to 7.4. In addition, a special winterizing agent is recommended to prevent algae formation. No further treatment is normally necessary during the winter if the pool is covered.
How much does it cost to winterize a pool?
The cost of winterizing the pool varies depending on the pool size and equipment. Expect to pay around 50 to 150 euros for chemicals and consumables. A professional winter check by a bluegarden specialist company offers additional safety and helps to avoid expensive frost damage.
Can I also use my pool in winter?
Basically yes, if you have the right technology. With a powerful heat pump, an insulating cover and an inverter pump for reduced winter operation, year-round use is possible. However, the operating costs increase significantly in winter.