Gas heaters are used in large numbers on pools and spas and give great flexibility to the pool owner, because of their rapid heating ability and robustness.
Gas heaters can easily maintain any desired water temperature as typical sizing is based on providing heater capacity capable of achieving a 14°C rise in water temperature in 24 hours. This allows a cold pool to be heated to a beautiful 28°C – 30°C in around one day, even in winter. This heating strength makes gas perfectly suited for pools that are used for entertaining. Which heating is right for you?
From the point of view of heating costs, the constant maintenance of pool temperature with gas is quite viable during the warmest months of the year. Whereas the solar heated pool will vary in temperature during this season, the gas-heated pool is maintained at the owner’s preferred temperature. Gas heating costs will be modest, as the heating requirement of the pool is relatively low. Likewise, the gas heater owner has the added flexibility to heat for specific events such as birthday parties or BBQs, or for longer periods such as September school holidays.
A gas heater is ideally suited to be added to a solar system, as it will offset solar’s inability to work at night or in poor weather.
The heating of a spa requires one of the powered forms of heating, that is, either gas, heat pump or element. The spa may be heated by a dedicated heater or by the pool heater, if the hydraulic design allows. Where a single heater is installed, there will be a need to alter valve settings to circulate the water between the spa and heater only, with the pool isolated while a fast temperature rise is achieved in the spa. The valve changeover and resetting can be done manually or by automated switching/valves.
Gas heaters either burn natural gas or, in areas where natural gas is unavailable, liquid propane gas. The way they work is that gas is burned inside a combustion chamber which contains coils of copper piping. Water from the pool is pumped into the heater and flows through the copper piping, and the heated water then flows back into the pool.
Benefits of Gas Heaters
Speed. The main benefit of gas pool heating is that it is fast and reliable. Typically, gas heaters are capable of raising the water temperature of a standard 32 m2 pool by around 14°C in less than 24 hours.
On Demand Heat. Because of the speed at which they heat the water, gas heaters provide the convenience of on demand heating. If you’ve got friends and family coming round for a barbecue, just turn on the heater the night before.
Year Round Swimming. Gas heaters operate efficiently even in the winter months, thereby providing the ability to use your pool all years round.