Water Heating Calculator
Litres of water:
Start temperature (°C)
End temperature (°C)
Heating power

Time to burn?

Below are volume guidelines for standard baths, spas and pools.

Cast Iron bath: 200L – a perfect match for the 6Kw bath heater
Standard spa pool: 1000L – an ideal partner for the 16Kw Spa Heather
Hot tub: 1500L – a prime sidekick for the 24Kw Hot tub / pool heater
Swimming pool 20000L + a great fit for the 24Kw Hot tub / pool heater

It is important to choose the wood-fired water heater that is appropriate for your volume of water.