There are several reasons why a pool owner may choose to install a heat pump for their swimming pool:
- Increased Comfort: A heat pump allows you to extend the swimming season by keeping the water at a comfortable temperature even on cooler days.
- Energy Efficiency: Heat pumps are considered to be a very energy-efficient way to heat a pool, as they work by transferring heat from the air or ground instead of generating it. This can help to save on energy costs.
- Versatility: A heat pump can also be used to cool the pool water during hot summer months.
- Environmental Impact: Using a heat pump can reduce your carbon footprint, as it does not rely on fossil fuels.
- Cost Savings: Using a heat pump can result in significant cost savings over time compared to traditional heating methods such as electric heaters, gas heaters and also compared to solar heaters.
- Low Maintenance: Pool heat pumps typically require little maintenance, which can save you time and money.
It is worth noting that heat pumps can be more expensive to purchase and install than other heating methods, but the long-term cost savings can make them a good investment. They also have a longer lifespan compared to other heating options.
It is always recommended to consult with a pool professional and to take into account the specific needs of your pool, and the climate and weather conditions of your area to determine whether a heat pump is the right choice for you and what is the best option that fits your needs.
How cold is too cold to use my pool heat pump?
The specific temperature at which a pool heat pump becomes less efficient and less effective is known as the “balance point”. The balance point is the outdoor temperature at which the heat pump’s heating output is equal to the heat loss of the pool.
The balance point will vary depending on the specific model and design of the heat pump, as well as the size of the pool, and the desired temperature. In general, for most pool heat pumps, the balance point is between 40°F and 45°F.
Using a pool heat pump below its balance point will cause the heat pump to work harder and longer to maintain the desired pool temperature, which can lead to increased energy consumption and reduced efficiency. It may also lead to frosting over of the heat pump’s coils, which can damage the unit if not addressed.
When the outdoor temperature is forecasted to drop below the balance point, it is generally recommended to turn off the pool heat pump and use an alternative heating source, such as a gas heater or an electric heater.
Final thoughts
It’s important to check with the pool heat pump’s manufacturer for more specific guidelines, as different models can have different balance points. Also, with the advancement in technology, some heat pumps are now designed to function effectively at lower temperature and are marketed as “cold climate heat pumps” or “low temperature heat pumps”. In these cases, you may be able to use them at lower temperatures than traditional heat pumps.
It’s also important to keep in mind that outdoor temperature is not the only factor to consider, other factors such as pool cover usage, wind, and pool location should also be taken into account.
In the case of a salt water pool, keeping the pool open a bit longer in the fall is generally better than closing it too early. Once you shut the chlorinator down and winterize the pool, there is no chlorine being produced. So if you get a sudden warm spell, the water will become a breeding ground for algae.
A heat pump can help to keep the pool usable longer into the autumn while also ensuring you have a successful opening in spring without pea green water.