A pool heater can transform your swimming experience, letting you enjoy warm, comfortable water even when the weather cools down. Whether you’re an early-morning lap swimmer, a family with kids who love evening swims, or simply want to extend your pool season, the right pool heater makes a world of difference.
Today’s market offers a range of options—gas, electric, and solar pool heaters—each with unique benefits, installation requirements, and energy profiles. With energy efficiency, smart controls, and durability at the forefront of innovation, choosing the best pool heater means balancing performance with cost and convenience.
In this comprehensive guide, I’ll walk you through the best pool heaters available on Amazon this year, based on expert reviews, user ratings, and my own hands-on experience with pool equipment. I’ll break down each product’s key features, pros and cons, and ideal use cases, so you can make a confident, informed decision.
Plus, I’ll share essential tips on how to choose the right pool heater for your needs, ensuring you get the most value and enjoyment from your investment. Whether you have an above-ground or in-ground pool, a compact backyard, or a sprawling oasis, you’ll find a heater here to suit your setup and budget.
How to Choose the Best Pool Heater
Selecting the best pool heater isn’t just about picking the most powerful or popular model. Here’s what I look for—and what you should consider:
- Pool Size & Type: The larger your pool, the more heating power you’ll need. In-ground pools often require more robust heaters than above-ground models.
- Heater Type:
- Gas heaters (natural gas or propane) provide rapid heating but can have higher operational costs and a shorter lifespan.
- Electric heat pumps are energy-efficient and ideal for regular use, but they heat water more slowly.
- Solar heaters are eco-friendly and cost-effective long-term, though they depend on sunlight and may require a larger installation area.
- Climate: If you live in a cooler region or want to swim year-round, a gas or electric heater may be best. For milder climates, solar options can suffice.
- Installation & Maintenance: Some heaters are plug-and-play, while others require professional installation. Consider ongoing maintenance needs and costs.
- Smart Features: WiFi controls, timers, and programmable settings add convenience and can help you save on energy bills.
- Budget: Factor in both upfront costs and long-term operating expenses.
By weighing these factors, you’ll be able to select a pool heater that keeps your water at the perfect temperature—without breaking the bank or the environment.
The 10 Best Pool Heaters of 2025
01. Hayward W3H250FDN Universal H-Series 250,000 BTU Natural Gas Pool and Spa Heater
The Hayward Universal H-Series is a top pick for in-ground pools, offering 250,000 BTUs of rapid, reliable heating power. Its digital control panel lets you set and monitor water temperature with ease, while the cupro-nickel heat exchanger resists corrosion, making it suitable for saltwater and chemically treated pools. Owners praise its fast heat-up times and robust build, though gas heaters like this do require a gas line and professional installation. If you want to extend your swimming season well into the colder months, this heater delivers consistent performance and long-term durability.
02. Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
Raypak’s 266,000 BTU Natural Gas Pool Heater is renowned for its heating performance and rugged construction. The digital thermostat ensures precise temperature control, and the galvanized metal cabinet stands up to the elements. It’s suitable for both in-ground and large above-ground pools, with a heating rate of about 1 degree per hour for average-sized pools. While gas heaters aren’t the most energy-efficient, Raypak’s model is more efficient than many competitors, though running costs can still be higher than electric or solar options.
03. Aquastrong 35,000 BTU Inverter Swimming Pool Heat Pump
The Aquastrong Inverter Heat Pump is a standout for energy-conscious pool owners. Rated at 35,000 BTU, it efficiently heats pools up to 9,000 gallons and features a WiFi-capable timer, allowing you to control and schedule heating from your smartphone. Its inverter technology adjusts power usage for optimal efficiency, and the unit operates quietly—ideal for residential neighborhoods. This electric heat pump is suitable for both above-ground and in-ground pools, offering a smart balance between performance and eco-friendline.
04. VARMINPOOL 16,000 BTU Above Ground Pool Electric Pool Heater
Designed for above-ground pools up to 5,400 gallons, the VARMINPOOL Electric Pool Heater combines affordability with modern convenience. Its titanium heat exchanger resists corrosion, and the WiFi control app lets you adjust settings remotely. The 110V operation means easy installation for most homeowners, and the compact design won’t clutter your pool area. If you want a reliable, user-friendly heater for a small to mid-sized pool, this model is a strong contender.
05. Intex 28685E Solar Pool Water Heater Mat
For eco-minded pool owners, the Intex 28685E Solar Mat offers a simple, cost-effective way to warm your above-ground pool. This solar heater connects directly to your pool’s filter pump and uses the sun’s energy to gradually raise water temperature. It’s best suited for pools up to 8,000 gallons and works especially well in sunny climates. While it won’t provide rapid heating, it’s a great supplement to other heaters or a standalone solution for mild weather.
06. ECOPOOLTECH EU50 Above Ground Pool Heater
The ECOPOOLTECH EU50 is a popular choice for above-ground pools, praised for its straightforward installation and efficient heating. It’s designed for smaller pools and features a durable build that withstands outdoor conditions. This electric heater is especially appealing for budget-conscious buyers who want reliable performance without complex setup or maintenance.
07. Varpoolfaye Above Ground Pool Heater
Varpoolfaye’s Above Ground Pool Heater is another excellent option for compact pools. It offers efficient electric heating and is easy to install, making it a favorite among DIYers. The unit is built for longevity, with corrosion-resistant materials and user-friendly controls. If you’re looking for a hassle-free way to keep your above-ground pool warm, this model is worth considering.
08. Hayward HeatPro Heat Pump
The Hayward HeatPro Heat Pump is a leader in energy efficiency, making it ideal for those who want to minimize operating costs. Its titanium heat exchanger delivers superior heat transfer and corrosion resistance, while the quiet operation ensures your backyard remains peaceful. This heat pump is best suited for in-ground pools and larger above-ground pools, offering consistent, even heating throughout the season.
09. FibroPool FH055 In Ground Swimming Pool Heater
The FibroPool FH055 is a compact yet powerful heat pump designed for in-ground pools. It boasts a high coefficient of performance (COP), meaning you get more heat for every dollar spent on electricity. The digital display and simple controls make it easy to set your preferred temperature, and the weather-resistant housing ensures long-term reliability. If you want a low-maintenance, efficient heater, the FH055 is a smart investment.
10. SmartPool S601 Pool Solar Heaters
Rounding out the list, the SmartPool S601 Solar Heater is a scalable solution for those committed to sustainability. The modular design allows you to add panels as needed, making it suitable for pools of various sizes. Installation is straightforward, and once set up, you’ll enjoy free heating powered by the sun. While dependent on weather, it’s an excellent primary or supplementary heater for eco-conscious homeowners.
Top Pool Heaters for the Money - My Final Thoughts
Choosing the best pool heater is a matter of matching your pool size, climate, and lifestyle with the right technology and features.
Whether you prioritize rapid heating, energy efficiency, or environmental friendliness, there’s a heater on this list to meet your needs. By investing in a quality pool heater, you’ll maximize your pool’s potential—enjoying warm, inviting water whenever you want to swim. For the latest deals and user reviews, check out these products on Amazon and make your next swim the most comfortable yet
