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Laars/ Jandy FAQ (cont.)


substantially more initially than fuel-fired heaters. It can add 25% to 50% to the cost of building a pool.


Solar systems have definite limitations. To begin with, they require sufficient area in which to install large collector panels, usually on a roof or deck overhang near the pool. Even in an area like southern California, the total solar collector area needs to be at least equal to 75% (100 % is better) of the pool surface area. This means that if you have a 20 x 40 pool you should have a 20 x 40 collector area available for best results.


Your pump would have to work almost continuously during most sunlight hours. This means your pump would be running during "peak load" periods when the utilities’ generating plants are often taxed to capacity—and when they charge more per kilowatt than during "off peak" periods.


Solar heating systems heat slowly—and not at all in cloudy, cool periods. Depending on the collector size and your location and climate, a solar system may not be able to warm the water to your desired temperature, even in the swimming season, except in the afternoon. And there is just not enough solar energy to heat your pool for swimming in the winter, early spring or late fall—no matter how many hours you pump.


What is the initial cost of a gas-fired heater?


Size for size, natural and propane gas-fired heaters cost the same. Prices depend on heater size, which in turn depends on the size of your pool—the gallonage of water to be heated. A good rule of thumb is 6% - 10% of the total pool cost, if yours is an in-ground pool. And for this small added cost you get considerably more use from your pool. If you have also decided on a spa, the piping to the pool is negligible in cost.


If you think of buying a pool in the same way you think of buying a new car, consider a heater the same way as adding a radio or air conditioning to an automobile. It’s an extra convenience you don’t use all the time, but it adds immeasurably to your enjoyment. With a pool heater you can swim anytime you choose.


What is the initial cost of an oil-fired heater?


It runs somewhat more than the cost of a natural or propane gas-fired heater. An oil-fired heater is ideal in areas where home heating oils are commonly used and natural gas is not available.


What about installation charges?


With natural gas-fired heaters, they consist of gas and water connections; for models with electronic control, an electrical connection to the filter pump circuit. Using propane gas requires a storage tank. With oil-fired heaters, you will require the services of a trained oil appliance technician and a storage tank. If your home already is heated by either oil or propane, the installation probably can be tied into your regular fuel supply.


In some areas, gas companies will make the gas installation with only a nominal charge. Check with your local gas utility and your Teledyne Laars/ Jandy dealer.


Must we go to the expense of building a shelter for our heater?


Not necessarily - it all depends on whether you want your heater installed indoors or outside. All Teledyne Laars/ Jandy heaters are design-certified for outdoor installation without a protective shelter. The Series 2 gas-fired models can be used outdoors in the attractive "stack-less" configuration in which they are shipped. They can also be installed indoors through use of the accessory draft-hood, which directs combustion products to a chimney or vent. The oil-fired models may be installed indoors with proper venting or outdoors with chimney cap supplied.


How about operating costs for fuel-fired heaters?


This is largely up to you. Like house heating, pool heating can be regulated to your budget. Swimming habits can be adjusted to your means. And you probably will want to use a pool cover to conserve as much energy as possible and still enjoy the benefits of owning your own pool.


Many common sense economies can be practiced—see our "Tips" section.


All things considered, which method of pool heating is the least expensive?


Studies of 10 - year "life cycle" costs have consistently shown that a good pool cover and a fuel-fired heater combination is less expensive, overall, than an active solar system alone, or active solar system and fuel-fired heater combination. This is true, even state tax credits are allowed for installing the active solar heater. Unless you live in an area where your electricity is generated by water power (hydroelectric), it is also true that the life cycle cost of a pool cover/fuel-fired heater combination is much less than that of an electric heater or combination.


What size pool heater will we need?


Heaters are sized mainly on the basis of the pool surface area and the difference between the pool and air temperatures. The average air temperature for the coldest month of pool use is used in the calculation.


The heating load could also be affected by such things as excessive wind exposure or much cooler night temperatures than daytime air temperatures; in those cases a heater with more capacity may be desirable.


Another factor which may determine the size of the heater you will need is the way you intend to use your pool. There are two common pool heating practices — "constant" temperature maintenance and "intermittent" heating. These are determined by how you want your pool heated—continually or on an intermittent basis.      (continued........)

The information on this page is provided by Teledyne Laars/ Jandy, a leader in the Pool Heating Industry, from their brochure "Facts about pool heating"

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