What can be better then taking a dip in your swimming pool or spa after a long day's work? Taking a dip in a nice warm swimming pool or spa! Heating your water features isn't a thing of the past. Heaters are available for all types of pools and spas and use almost any kind of fuel imaginable. Propane, natural gas, oil and even electric heaters are commonplace around the country and around the world. There are also heat pumps which work well in the warmer climates.

Pool heaters heat the clean water, which has circulated through the pool pump and pool filter, by using a fossil fuel or electricity to generate heat and boil the water. Heating a spa or very small body of water is quick and usually can bring up the temperature a few degrees per hour, where as a swimming pool will take much longer to warm up at only one degree per hour.

Heat pumps, which in some respects are like an air conditioner, only removes the heat from the air and transfers it to the pool or spa water. Heat pumps work well in warmer climates where the air temperature does not fall below 70 degrees for any length of time, as heat pumps do not heat water as quickly as a gas or oil heater, but rather maintain the current temperature.