additional information Størvatt Pool Heater

The difference between a nice swim of not swimming at all



Just a few degrees can make the big difference between a warm pool and one that is too cold. Nobody likes to swim in cold water.


The Størvatt swimming pool heater on wood delivers more than 40 KwH energy and heats your pool fast and with a lot of energy. In this table you can see how many dregrees per hour you can heat your (swimming) pool.


The Størvatt swimming pool heater is simply placed next to the pool. There are many ways to connect and use the heater, even with an existing setup. For example, the heater is easy to connect to a swimming pool’s existing filter system or with a simple pound pump. It is also very easy to connect to other above-ground pools and plunge pools.

As soon as the Størvatt swimming pool heater has been installed, you can start heating immediately!


When can the Størvatt Pool Heater be used

The principle of a Størvatt Pool Heater is to heat the water from your swimmingpool with a woodstove. Except for your pool this warm water can also be used in a hottub or other bath. Of course it is always possible to use the Størvatt Pool Heater for your hottub only or you can also order a Størvatt hottub together with a Størvatt Pool Heater next to the hottub.

What makes the Størvatt Pool Heater better than other swimming pool heaters?

The Størvatt Pool Heater has a very high efficiency, namely 40Kw. Furthermore the Størvatt Pool Heat made of 316L stainless steel. The best stainless steel suitable for a wood-burning Pool Heater. It is resistant to electrolysis, to chlorine, to salt or other cleaners for your (swimming pool) water.

What is the cost of heating your water with a Størvatt Pool Heater?

Except your time -> wood. Per hour you will need wood about a wheelbarrow, but that also depends on the type of wood that you are using.

 What type of wood must I use in the Størvatt Pool Heater?

Of course, dry wood, but the best is also soft wood. Hardwoods, such as oak, will smoulder and won’t heat the water as well as softwood. With a nice flame in the wood the water will heat faster.

Is the Størvatt Pool Heater resistant to water containing chlorine?

Yes, the Størvatt Pool Heater is made of STAINLESS STEEL 316 and is specially developed for swimming pool water.

Must the Størvatt Pool Heater be connected to a pump?

Yes. In the Størvatt Pool Heater the water must always circulate; You can use an (existing) swimming pool installation or you can use a simple garden hose with a pond pump

How much smoke is there when burning the Størvatt Pool Heater?

This depends on the quality of your fire. When burning dry wood with sufficient oxygen reaching the fire, there is hardly any smoke. When a fire starts and dies there will always be some smoke.

What is the advantage of using the Størvatt Pool Heater in a hot tub, compared to a system with a stove in the water

There are several advantages

  1. the Størvatt Pool Heater does not use any space in the tub and therefore you have more useable space in the tub. This means either you do need to have such a large tub, or more people can enjoy using the hot tub.
  2. Also you can start burning your fire as soon as the water has reached the Størvatt Pool Heater - saving you time.
  3. It is easier to take away the ashes in a Størvatt Pool Heater
  4. In addition, you can easily use the Størvatt Pool Heater to heat your swimming pool, so it is multifunctional.
  5. A lot of hottubs are sold with a stainless steel heater hanging in the water; with this stainless heating system it takes about double the time to heat the water (A Størvatt hottub has a stove hanging in the water made of aluminium; the time to heat the water is the same when you use the Størvatt Pool Heater)

How do you get the most return of energy from the Størvatt Pool Heater?

The more intense your fire is, the faster the water will be heated. However, the highest return of energy is with a constant fire.
The water flow is also very important. The faster the water flows through the Størvatt Pool Heater, the more heat will be transferred to the water, instead of to the outside of the Størvatt Pool Heater. However, if the water flow is too strong, the water may cool the fire. With a flow of 1 litre/second the Størvatt Pool Heater can heat the water by 6-8ºC.

What is the maximum temperature of the water?

In theory it is possible to boil the water. The Størvatt Pool Heater heats the water that gets into the Størvatt Pool Heater, However, in reality it would only be possible to boil water when the water entering the Størvatt Pool Heater is already at a temperature of 90 ºC and of course when the water circulation is blocked.
It is important to always follow the instructions for using the Størvatt Pool Heater.

Can a legionella bacteria contamination get in the Størvatt hot tub or Pool Heater?

No, a legionella bacteria contamination develops after about 3 weeks, in a stagnant and closed circuit and the water is above 25 ° C and below 60 ° c. These circumstances don’t arise in normal use of the Størvatt hottub or Størvatt Pool Heater.

Is the Størvatt Pool Heater more suited for swimming pools of hottubs?

The Størvatt Pool Heater is designed to be used in both. It is even possible to combine your hot tub with your swimming pool. This enables you to use your swimming pool longer.
Once you have warmed yourself in the hot tub, it is wonderful to cool down in the swimming pool afterwards.

Doesn’t burning wood have a negative influence on the environment?

It is better to burn wood (especially well dried wood) rather than to use resources such as oil or gas. The CO2 that is released when burning a wood fire has a short cycle. Resources such as oil and gas have a long CO2-cylce. When burning well dried wood the smoke is 100% degradable; trees use these fumes to produce Oxygen. This way wood is an environmentally friendly resource.

What is the right temperature for a hottub?

In general an ideal bathing temperature is between 38 and 40ºC. However there are people who prefer a colder or warmer bath. Please be aware that a bath over 40ºC can be dangerous. The human body needs to be able to lose some of its heat. That is why good hot tubs have seats at various levels. If your body gets to warm, dizziness may occur.

My Størvatt Pool Heater seems to leek?

All Størvatt Pool Heaters are tested before delivery. What seems like leeking probalby is condensation. By intensifying the fire, the condensation will disappear.



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