Press the button and adjust the temperature – Rexener Bioheater will heat up your hot tub or swimming pool in no time. The heating time of the water is considerably shorter than when heating with wood. The Rexener keeps the water temperature constant.
» Works with biodiesel, diesel or fuel oil.
» Low consumption. Maintaining a stable temperature is easy and inexpensive.
» Precise thermostat control 0–40 oC.
» Also for replacing existing wood stoves.
» Heats the water in no time.
» No visible smoke – suitable for use in residential areas.
» Efficient heating, 20 kW.
» Suitable for all outdoor hot tubs and even large swimming pools.
» Quiet, max. only 48 dB.
You can get service from us in English, Swedish, Norwegian and Finnish.
(incl. in Bronze-, Silver- and Gold-packages)The installation kit includes all necessary parts for installing the heater (sockets must be ready in the hot tub/pool).. We will go through these in our call with you.PUMP AND FILTERSilver-Package includes Steinbach water circulation pump. Gold-package includes Steinbach mass filter, which also includes water circulation pump.
Rexener bioheater Basic
For you who already have a circulation water pump and installation supplies
REXENER BIOHEATER Bronze
For you who already have a circulation water pump. This package is also great for swimming pools!
REXENER BIOHEATER Silver
The perfect kit for replacing the wood stove
REXENER BIOHEATER Gold
The perfect kit for replacing the wood stove. With mass filter.
Rexener Bioheater can be installed on a new or existing hot tub or pool water heating system. Rexener Bioheater can replace the traditional wood-heated hot tub heater. Water heating can begin before the pool is full of water. This makes the heating faster.
You can use Rexener Bioheater with biodiesel, diesel or “red diesel”. You can also use Rexener Bioheater in a suburban area, as the heater will not cause visible smoke or smell that could disturb your neighbors. The high efficiency of Rexener Bioheater heater also means that the use of the heater does not cause much harmful exhaust emissions. In practice, the exhaust only emits carbon dioxide. The heater only needs about 80W of electrical power.
With Rexener Bioheater, you can keep the same water in your hot tub week after week by connecting a sand filter to the heater and using the appropriate pool chemicals. When the hot tub or pool is more convenient to use, the usage is more frequent. You can even get Rexener Bioheater from us with an installation service.
Rexener Bioheater also has the power to heat up a really large 50,000 liter swimming pool – all year round – even in Nordic countries! Rexener Bioheater is truly reliable and we give it a 3 year warranty.
38 × 58 × 86 cm
18,5 kW / hr
2,0 L/h (Note: thanks to the thermostat, actual consumption is much lower)
Heating time from +7 °C to +38 °C takes about 2 hours, of which about 1 hour of water filling. During this time, consumption is 2 L per hour. Consumption = about 4 l biodiesel or diesel.
Note! The thermostat switches off the burner when the desired temperature has been reached, so that the heater does not consume any fuel. When the heat drops by 2-4 °C (adjustable), the heater restarts and it only takes a little while until the desired temperature is reached again. Therefor, consumption is also low and the use of the hot tub is economical.
If you wish, you can lower the temperature to +10°C if you do not use the hot tub/pool continuously. It saves energy.
Yes. The Rexener heater is so efficient that the heater does not operate optimally when in free circulation. If your pool (hot tub / pool) already has a circulation pump or sand filter system, you can take advantage of it with Rexener. If you do not already have a circulation pump or sand filter, you can easily order them from our online store while ordering a heater.
Rexener Bioheater can be installed up to 10 meters from a swimming pool or a hot tub. So it doesn’t have to be right next to the pool. The circulation pump handles water recycling.
It is good to place the heater in a place where it can be easily adjusted. It should be installed on a stable surface that is free of water. The heater feet are adjustable. The fuel tank requires a safe platform. Make sure the tank is located where it is easy to refuel.
It is not necessary to move the heater indoors in winter, especially if it is in use. If the heater is drained of water, it can also be stored outdoors. Of course, it is always better to keep the device in a warm, sheltered place when not in use.
Water must not freeze inside the heater. If you wish, you can keep the water so warm that it does not freeze, so you do not need to drain the appliance. If the heater is not used (or the heat is not maintained), the unit must be emptied before frost.
The fuel remains in a weatherproof tank, so you don’t need to empty the tank even in frost. It is always advisable to change the fuel if the fuel stops for a long time.
In the frost, make sure that the heater uses winter grade fuel.
The electronically controlled safety functions of Rexener Bioheater ensure safe operation of the heater in all conditions. The security functions include: two overheating systems, a flame sensor, automatic shutdown and water level monitoring.
Air blowing fan and high-pressure oil injection ensure the reliability of Rexener Bioheater in all conditions.
The oil burner and the electric components of Rexener Bioheater are protected inside the heater’s casing. The design of the oil burner, the electronics that control it and the fuel tank take into account the Nordic weather conditions.
The oil burner fan supplies air to the combustion chamber into which fuel is injected. It is ignited by a lighter controlled by the electronics of the device.
The thermal energy of the oil is utilized to heat the water contained in the piping inside the heater. Efficient and precisely controlled combustion can utilize virtually 100% of the energy contained in the fuel oil, which means that Rexener Bioheater produces no particulate emissions or carbon monoxide. In principle, the exhaust will only produce harmless carbon dioxide.
Because all the energy contained in the oil can be utilized as heating power, the efficiency of the Rexener water heater is high, which means low fuel consumption.
The exhaust pipe (chimney) supplied with the heater ensures a very low sound level and safety. The hot flame of the oil burner is effectively protected inside the unit and the low temperature of the exhaust gases emitted from the exhaust pipe poses no risk of fire. The “chimney hat” at the end of the exhaust pipe also protects the burner from damage caused by air pollutants and moisture.
I would definitely recommend Rexener Bioheater to others. It is a top product. I am also very happy with the service I have received in connection with questions about the product. Rexener Bioheater will extend our bathing season, so we will use the bath throughout the year.
Pool season year round
Rexener Bioheater is heating up our swimming pool, whose volume is almost 50 m3. Rexener Bioheater has been easy to use and has significantly increased the use of the swimming pool.
Hot tub on an island
The customer lets the hot tub cool down during the week and he increase the temperature for the weekend when the hot tub is used. This makes its use really cost-effective. The heater quickly heats up the water to the desired temperature, and there is no need to worry about getting firewood.
For year-round use
Rexener Bioheater enables the use of hot tubs all year round!
Heat up your hot tub in 2 hours. The heating time of the water is considerably shorter than when heating with wood.
Heats up with a push of a button!
Press the button and adjust the temperature: Rexener Bioheater will heat up your hot tub or swimming pool in no time.
No visible smoke
No visible smoke - suitable for use in residential areas.
EXAMPLE OF CONSUMPTION– Tub water volume: 1,500 L
– Heating time from +7 °C to +38 °C approx. 2 h
– Consumption = about 4 l biodiesel or diesel