10 Best Electric Pool Heaters 2025 in the United States

The Aquastrong 35,000 BTU Inverter Swimming Pool Heat Pump is designed to efficiently heat pools up to 9,000 gallons, suitable for both above-ground and inground pools. It provides strong heating capacity to quickly warm your water and includes a cooling function for comfortable swimming temperatures throughout the year. The inverter technology dynamically adjusts power use to save about 70% energy compared to traditional electric heaters and operates more efficiently than many gas heaters, resulting in lower electricity bills while maintaining a cozy pool environment.

Installation is straightforward with multiple connection options compatible with common pool plumbing sizes. The unit is manageable in size but weighs about 117 pounds, so assistance may be needed during setup. Constructed with durable materials like cast iron, the heat pump ensures long-lasting use. It operates quietly at around 48 decibels, preserving your backyard tranquility, and features an automatic defrost function to maintain performance during colder months.

Control is convenient through a smartphone app and an onboard panel, enabling remote setting adjustments and scheduling. Considering its efficient, year-round temperature control combined with easy app-based management and quiet operation, this heat pump offers a reliable solution for pool owners seeking consistent comfort.

The TURBRO Beluga series swimming pool heat pump offers a heating capacity of 50,000 BTUs, making it suitable for pools up to 16,000 gallons. It's built with inverter technology to adjust heating power based on various factors like ambient temperature and water flow, ensuring consistent pool temperature. The COP rating of 15.90 suggests good energy efficiency, saving costs significantly compared to other heating methods such as natural gas or propane. However, it performs best when outdoor temperatures are above 60°F, which might limit its efficiency in colder climates. Using a pool cover can help mitigate this issue.

The unit is relatively large and requires professional installation due to its need for a hardwired connection to a 220-240 V power supply, which could add to initial setup costs and complexity. The titanium heat exchanger is a plus for durability and compatibility with saltwater pools. Control features are advanced, offering both a control panel and mobile app integration for convenience.

Safety features are robust, with multiple sensors monitoring various operational parameters and shutting down the system in case of faults. For those with above-ground or larger in-ground pools looking for an efficient and smartly controlled heating solution, this product could be a great fit, though it requires consideration of installation requirements and optimal operating temperatures.

The Hayward W3H250FDN Universal H-Series 250,000 BTU Natural Gas Pool and Spa Heater is a strong performer in the electric pool heater category. With a substantial heating capacity of 250,000 BTUs, it’s well-suited for heating both in-ground pools and spas. This model stands out with its energy efficiency, thanks to an industry-leading hydraulic design that reduces the circulation pump run time, leading to significant energy savings. The heater’s size (33.3 x 32.8 x 30.6 inches) and weight (165 pounds) are notable and may require professional installation due to its bulk.

However, the front-panel-only access and intuitive control pad simplify operation, service, and maintenance, making it user-friendly once installed. Durability is another strong point, with a cupro nickel heat exchanger that offers excellent protection against corrosion and premature failure, even in the face of unbalanced water chemistry. Additionally, it meets low NOx emission standards, making it environmentally friendly. Despite its higher rank, some users may find the upfront cost and potential installation challenges as drawbacks. This heater is highly suitable for those needing a reliable, efficient, and durable solution for their pool or spa heating needs.