5 Best Propane Pool Heaters 2025 in the United States

The DR. INFRARED HEATER DR-900HP is a powerful 90,000 BTU heat pump suitable for both in-ground and above-ground pools up to 28,000 gallons. Its standout feature is its high efficiency, with a 540% equivalent efficiency rating, meaning it generates a significant amount of heat for the energy it consumes. This makes it quite cost-effective in the long run. Additionally, the size and installation requirements are manageable with an input of 208-230 Vac, making it accessible for many pool setups.

The unit is designed with advanced technology, including a Full DC Inverter fan motor and compressor that adjusts heating capacity from 20% to 100%, enhancing operational efficiency and stability. The twin rotary compressor further contributes to lower vibration and quieter operation, which is beneficial for maintaining a peaceful pool environment. Control features are modern and user-friendly, with built-in WiFi for remote operation via a mobile app, allowing users to set temperatures and schedule operations from anywhere. The soft-start function is a thoughtful addition, improving the unit's longevity by reducing stress during startup.

In terms of durability, the DR-900HP is certified by CSA and AHRI, ensuring quality and stable performance, which is reassuring for long-term use. Customer support is robust, with USA-based assistance available for any issues. This heat pump is a solid choice for those prioritizing efficiency, advanced control features, and durability in their pool heating solutions.

The Raypak Millivolt Propane Swimming Pool Heater offers a strong heating power with its 406,000 BTU output, making it suitable for larger pools or those needing quick heat-up times. Its energy-smart design means it is quite efficient, helping to keep fuel costs reasonable. The heater features a durable polyester-coated cabinet, which resists corrosion better than many other metal cabinets — a plus for outdoor use where exposure to weather is constant.

Its low-profile design allows it to draft naturally outdoors, simplifying installation without extra venting equipment. You can choose between a traditional millivolt ignition setup or an upgraded digital electronic ignition, giving some flexibility depending on your preference for control features. The copper heat exchanger is a reliable component known for good heat transfer and longevity.

With a strong positive customer rating, this heater meets expectations for durability and performance. It is a solid choice if you want a powerful, efficient propane heater built to withstand outdoor conditions, especially for medium to large pools.

The Raypak 014951 Digital Cupro-Nickel Propane Pool Heater delivers a strong heat output of 240,000 BTU, making it suitable for medium to large pools that need quick and effective heating. Its cupro-nickel construction is a standout feature, as this material is known for resisting corrosion better than regular metals, which can extend the heater’s lifespan, especially if you have hard or saltwater. The heater’s pagoda design helps it perform reliably even in harsh weather, which adds to its durability.

It includes a microprocessor-controlled thermostat with a digital display, making it easy to set and monitor the pool temperature accurately. Additionally, the on-board self-diagnostics can help identify issues early, potentially saving on repair costs. However, the size and weight (over 200 pounds and fairly large) mean that installation might require professional help and some space beside your pool.

This heater is a solid choice for those wanting a powerful, weather-resistant propane heater with easy controls, provided they are prepared for the installation requirements and the typical noise associated with gas operation.