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Between setup and operating costs, a pool heater costs between $300 and $5,000, with the average cost around $2,000.Sep 20, 2017

Pool heaters have the potential to be an incredibly worthwhile investment if a family wants to utilize its new pool year 'round, or even just well into school starting in the fall. These heaters have state of the art technology that allow for comfortable swimming temperatures, even in sweater weather.Apr 25, 2016

How They Work. Gas pool heaters use either natural gas or propane. As the pump circulates the pool's water, the water drawn from the pool passes through a filter and then to the heater. The gas burns in the heater's combustion chamber, generating heat that transfers to the water that's returned to the pool.

That means an average pool heater between 300,000 and 400,000 BTU's will cost anywhere from $3.30 to $4.40 per hour to heat your pool.

Keeping Your Pool Heated

However, since weather can be unpredictable, if you plan to keep your pool open during the colder months, you must keep your water heated well above freezing temperatures. Don't run the risk of ruptured pipes or allowing the cold to cause more expensive damage.Jan 18, 2019

Heated swimming pools are will often make your energy bill skyrocket. Gas pool heating heating can cost anywhere between $4 and $17 per hour to run according to the SA Government. Solar heating is much cheaper, only costing around $0.18 and $0.26 per hour. Gas heaters are popular because of how effective they are.Oct 11, 2021

Gas heaters have higher operating costs than other pool heater types, mainly because natural gas and propane will be more expensive than electricity.

But fast heating for an average sized swimming pool means a whole lot of gas burning. Hence, why gas heaters are usually best for small spas. Not at all. The average lifespan for a pool heat pump ranges from 10-20 years.

It depends on a few things to determine how long it takes a heat pump to heat a pool. However, overall a heat pump generally heats a pool after 24 to 72 hours by 20-degrees Fahrenheit. For smaller pools like a spa pool, the heat pump can heat a pool between 45 and 60 minutes.