Well, it’s just mid-October and there’s already snow at the ski areas in our neck of the woods. To extend your swimming season, there are options available that will help you heat your pool in the winter months.

Here are your options:

Gas Heater

Gas heaters heat your swimming pool by burning either propane or natural gas. They can heat your swimming pool more easily and quickly in lower temperatures than a heat pump, which operates less efficiently in lower temperatures. The gas heater is great if you want on-demand heat.

Air-Source Heat Pump

Air-source heat pumps are rapidly growing in popularity because they offer very energy-efficient and cost-effective heating. Air-source heat transfer heat from the air to your swimming pool. They have a COP measuring between 5 and 6, which means they produce five to six units of energy for every unit they consume. This high energy efficiency directly translates to low operating costs and low environmental impact.
Most heat pumps shut down when the outside temperatures go down below 55° degrees, some can continue to operate down to the mid to low 40’s, and some can operate in temperatures of mid to low 20’s. These types of heat pumps have different names and are made by various manufacturers they can be referred to as reversible heat pumps, heat/cool heat pumps or icebreakers. On colder temperature days, a heat pump will begin to “freeze” the condensate that forms normally on the evaporator coil. Standard heat pumps simply turn off at this point to avoid mechanical damage to the heat pump system due to this icing condition. A Hot Gas will utilize a reverse cycle process which reverses the flow of refrigerant gas through the unit, quickly “defrosting” the evaporator coil- which allows the heat pump to continue to heat

Water-Source Heat Pump

Water-source heat pumps are not as well-known as other heating systems because they utilize newer technology. They transfer heat from water sources, such as a lakes, ponds, or wells. Water-source heat pumps greatly benefit swimming pool owners who live in climates where air temperatures fall below 50°F (10°C).


The installation of water-source heat pumps requires large wells and long water lines. This installation process can be both timely and costly. However, after the installation process is complete, your water-source heat pump will require minimal cost and space.

Solar Blanket Solar blankets are often recommended because they greatly reduce swimming pool heating costs. 75% of your swimming pool’s heat loss is due to evaporation. A solar blanket reduces heat loss from evaporation by acting as a barrier between your swimming pool and the air. A solar blanket is most effective at night and during cloudy days, when the potential for evaporation is greatest.



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