Heating the Swimming Pool
Is it worth the considerable additional expense to heat a swimming pool? After weighing all the pros and cons, you will probably find that it is.
What is a Comfortable Swimming Pool Temperature
Most people feel comfortable in water that's 26°C to 27°C. Though you may find an air temperature of below 26°C enjoyable, you'd feel chilly in a pool at the same temperature.
An unheated swimming pool does store heat from the sun, but it will never exceed the average air temperature. In Central- and South Thailand the average temperature of the pool is about 27°C in the hottest months. A heater will allow you to swim for more months of the year and more hours each day – and even evenings, too.
Comparing the added expenses of a heater – equipment cost and installation, annual maintenance by an expert, and, of course, escalating fuel costs – to your large investment in the pool and the additional use you'll make of your investment will help you decide.
You can heat your pool with gas, electricity, or oil, or you can let the sun do it for you. You can read more about Solar -Heated Pools here. In Central-, South- and Northeast Thailand the sun may be all you need.
In other parts of the country, though, solar heating may not be practical, or you may have to supplement it with a traditional fuel.
Types of Fuel to heat the Swimming Pool
Gas is the most common and usually the cheapest and most efficient heating fuel. Though natural gas shortages have been widely predicted, most experts now seem to agree that there is plenty of gas available at the right price. Sometimes, pool users find themselves a target of natural gas conservation efforts, but as a whole, they are insignificant consumers. In some parts of the country, natural gas use is being encouraged.
In the face of high fuel costs, you'll hear many conflicting claims about the most cost-effective way to heat a swimming pool. A recent study provides some helpful information. The single most effective way to lower your heating costs is to cover your pool when it's not being used. The cover prevents heat loss during the night and allows the sun to heat the water during the day.
Even with a solar cover, you'll need supplemental heat – oil, electric, or solar – in many parts of the country. On a 10-year basis, including all equipment and operating costs, the study concluded that a gas heater and solar cover combination was a third to one half the cost of any other option. Of course a change in utility rates or less than maximum use of the cover can invalidate the conclusions. So check for yourself in your area and compare your options.
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