Your pool needs as much attention in winter as it does in summer. But should you choose active or passive winterization? Discover the differences, benefits, and our practical advice to protect your pool and enjoy impeccable water in spring.
Why winterize your pool?
In France, more than 3.4 million households enjoy a swimming pool. However, winter remains a critical period: frost, dirt, stagnant water... Without winterization, the damage can be costly.
Winterizing your pool allows you to:
- Protect the structure and equipment from frost
- Limit the accumulation of dirt
- Facilitate spring start-up
Active winterization: simplicity and speed
Active winterization involves keeping the filtration running a few hours a day. Suitable for regions where temperatures remain mild, it prevents freezing and maintains water quality.
Keys to active winterization
- Reduce filtration (1 to 3 hours/day)
- Regularly check pH and clarity
- Use an anti-freeze control box such as the DHG-2
Its main advantage? Faster start-up and clear water as soon as warmer weather returns.
Passive winterization: total protection
Passive winterization is recommended in cold regions. Here, filtration is completely stopped, after a thorough cleaning and shock treatment of the water. The pool is then protected with a cover.
Essential steps
- Drain pump, filter, and skimmers
- Install plugs and winterizing floats
- Cover the pool with a suitable tarp
This method requires more preparation but guarantees maximum protection against frost.
Filtration and pump: what to do in winter?
In passive winterization, filtration is completely stopped. In active winterization, it must run a few hours a day, especially at night, to prevent freezing. A variable-speed pump allows you to adjust the flow rate according to the temperature.
Preventing the risks of freezing
Freezing can occur at just 1 or 2°C and damage your equipment. The most reliable solution is to install an anti-freeze control box (e.g., DHG-2). It automatically activates the pump when the temperature drops below 0°C.
Winter cover: essential
The cover protects the water from debris, limits algae proliferation, and greatly facilitates maintenance. It is mandatory for passive winterization and recommended for active winterization to preserve water quality.
When and how to restart your pool?
In spring, check the water clarity and analyze its parameters (pH, alkalinity, chlorine). If everything is in order, your pool is ready for a new season.
Quick FAQ
Should I clean my pool before winterization?
Yes, thorough cleaning and shock treatment are essential.
What is the difference between active and passive winterization?
Active: reduced filtration, suitable for mild regions. Passive: complete shutdown, ideal for cold areas.
Should I cover my pool in winter?
Yes, especially for passive winterization. The cover protects the water and the structure.
Can I keep the same water for several years?
Yes, if winterization is done properly, the water can be kept for 3 to 5 years.
By choosing the right winterization method and using the right equipment, you prolong your pool's lifespan and enjoy clear water as soon as the sun returns.
