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Increasing numbers of swimming pool owners are wanting to make the most from their pool by investing in a pool heating solution to extend the swimming season or swim year round. There is a range of pool heating solutions to choose from, depending on your budget, location and lifestyle.

Creating and maintaining the ideal pool temperature doesn’t come naturally. While pool water predominantly hovers around the 15-20 degree Celsius (around 64-68 degrees Fahrenheit) mark, it takes a designated heating system to bump it up to where we like it most – a balmy 25-29 degrees (77-84.2 degrees Fahrenheit).

Installing the right pool heating solution may extend your swimming season by up to six months with solar, and beyond with conventional heaters thus increasing the return on what was undoubtedly a significant investment in your pool.

There are three main heating options to choose from – solar, gas heaters and heat pumps. Below is an overview of each type and their benefits.

The most environmentally friendly option of all, solar pool heating operates by using the energy of the sun.

The principals involved in solar pool heating are very simple. Imagine a garden hose that has been lying in the sun for several hours. When you turn on the tap, out comes hot water. The sun’s energy has been absorbed by the hose and transmitted as heat to the water inside it. Basically the hose acts as a solar collector, which is the process of solar heating.

Unlike other pool heaters on the market, solar pays for itself in just a few years. After the initial setup cost, the ongoing running expenses are minimal as heat is provided free from the sun. This enables you to increase the amount of time you spend in your pool without worrying about expensive energy bills.

Solar systems are a low cost method to heat up your pool and have virtually no operating costs, just the cost of electricity to pump the pool water through the solar absorber on the roof.  Solar heating systems are also simple to maintain.

The amount of heat absorbed and the subsequent increase in temperature depends on three key criteria:

  1. The size or area for the collector and the number of tubes per square metre;
  2. The location of the collector;
  3. The quality of the collector system.

Ultimately, the biggest influence is the exposure to the sun. This gives this system the advantage of being very cost effective in terms of running costs; savings can keep coming for up to 20 years a properly installed system may last.

However, if you live in a climate that does not get a great deal of sunlight or a very shady suburb, then a solar system may not be a viable option. Installation may also be costly depending on the complexity of the system.

There are two types of solar collectors available from Zane – Gulfpanel and Gulfstream.

Zane Gulfpanels are manufactured in fixed size lengths, which are laid side by side to form a large grid. These systems generally require a larger rectangular area for installation and are commonly referred to as panel type systems within the industry.

The key benefits are:

  • More resistant to wildlife attacks in regions where this is a problem
  • One piece panels with fewer joints
  • Excellent heat transfer characteristics
  • UV stabilised

Zane Gulfstream systems are custom built to blend in with the contours of your roof, allowing maximum coverage. Gulfstream systems are commonly referred to as rubber or strip type systems within the industry.

The key benefits are:

  • Easily fitted to odd-shaped smaller roofs to maximise roof coverage
  • Flexible installation around valleys and rides of the roof
  • Excellent heat transfer characteristics
  • UV stabilised

Reliable, highly efficient and economical to run, heat pumps extract heat from the air (similar to a reverse cycle air conditioner), and use that heat to produce hot water.

Compared to gas and electric, heat pumps use just a fraction of the energy to generate the same amount of heat output. Although initially heat pumps take longer than gas heaters to warm up the pool or spa water, they are much more economical and will then maintain the heating as well as gas heaters.

Benefits of heat pumps include their high energy efficiency and lower running costs. As a guide, you can save up to 80% over LPG and 50% over natural gas fuelled heaters. And the best thing about heat pump pool heaters is that they operate regardless of the weather.

One of the disadvantages of this type of system is that they can lose their high energy efficiency slightly once the weather really cools down, as the heat pump needs to work harder to heat the water against the outside temperature. However, unless you live in an area that does experience very low winter temperature, this is not a concern.

Pool heat pumps may be expensive to install initially, but the low operating costs should make up for this in no time at all compared to other forms of conventional pool heating.

Gas pool heating is the fastest method for heating your pool, providing a comfortable temperature for swimming on demand. Put simply, they could extend your swimming season all year round.

Gas heating systems use natural gas or LPG, heating the pool water by drawing it into a heating unit and filter.

A key advantage of gas pool heating is it can heat pool water much faster than a solar or heat pump system can, and will heat the pool and spa water up to 40oC, no matter how cold the climate is.

Selecting the right size gas heater depends on three key factors:

  1. The amount of water to be heated;
  2. How long you are prepared to wait for your pool to heat up;
  3. Your preferred swimming temperature.

Many heaters offer dual pool / spa temperature settings which is ideal for spas, which are heated to higher temperatures than pools.

However, no system is without some drawbacks; gas could be considered inefficient compared to heat pumps and solar heating systems, but depends largely on the climate you live in, how you wish to use your pool and availability of gas supply.

Another disadvantage is gas heaters can cost more to run, so are best suited to a pool that does not get used often during winter.

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Solar Pool Heating Facts Book

A buyers guide to selecting the correct solar pool heating system.

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