Which Raypak Pool Heater Is Right for You? A Complete Guide to Every Series
Raypak offers a wide range of pool heaters and heat pumps designed for different pool sizes, installation environments, fuel types, and performance requirements. Each series is built with a specific purpose, from compact residential heating to commercial-grade systems and energy-efficient heat pumps. Understanding the differences between Raypak series can help identify the right solution based on fuel availability, water chemistry, climate, and usage patterns.
Raypak Digital Series

The Raypak Digital Series is one of the most widely used gas heater lines for residential pool and spa applications. These heaters are available in both natural gas and propane configurations, typically ranging from 199,000 to 399,000 BTU. They use an atmospheric burner design and a copper fin tube heat exchanger to provide fast heat-up times and consistent water temperature. The digital control system allows for straightforward temperature adjustment, and the electronic ignition system eliminates the need for a standing pilot. These heaters are commonly used in standard residential pools where reliability and simplicity are key factors.
Raypak Digital Cupronickel Series

The Raypak Digital Cupronickel Series builds on the standard Digital platform by incorporating a cupronickel heat exchanger instead of copper. This material offers improved resistance to corrosion and chemical wear, making it better suited for saltwater pools or environments with more aggressive water conditions. These heaters are available in similar BTU ranges and fuel types as the standard Digital Series, but are often selected when long-term durability is a priority.
Raypak AVIA Series

The Raypak AVIA Series is designed with a more modern approach, featuring a compact cabinet, built-in digital controls, and integrated connectivity for system monitoring and automation. AVIA heaters are available in natural gas and propane, with both copper and NiTek heat exchanger options. NiTek is designed for increased corrosion resistance compared to copper, making it suitable for saltwater and chemically demanding pools. The AVIA Series is typically used in residential and light commercial applications where space constraints and system integration are considerations.
Raypak ASME Series

The Raypak ASME Series is designed for commercial and high-demand residential pool applications. These heaters are constructed in accordance with ASME standards, which require thicker materials and more robust construction to handle continuous operation and higher system pressures. ASME heaters are available in both copper and cupronickel configurations, as well as natural gas and propane fuel types. They are commonly used in commercial facilities, apartment complexes, hotels, and large residential pools.
Raypak LoNox ASME Series

The Raypak LoNox ASME Series is similar to the standard ASME line but is designed to meet low NOx emission requirements. These heaters are used in regions with strict environmental regulations, such as parts of California. They maintain the same heavy-duty construction and performance characteristics as ASME models while reducing nitrogen oxide emissions. These heaters are typically specified for commercial installations or projects that require compliance with local air quality standards.
Raypak Above Ground Series

The Raypak Above Ground Series is designed for smaller residential pools, particularly above ground pools and spas. These heaters are available in lower BTU ranges, commonly around 105,000 and 150,000 BTU, and are offered in both natural gas and propane. Their compact size and simpler design make them easier to install on smaller equipment pads. This series is typically used where space is limited and heating demand is lower.
Raypak Crosswind Series

The Raypak Crosswind Series consists of inverter-driven heat pumps designed for efficient heating and cooling of smaller residential pools and spas. These models use a horizontal discharge design, allowing air to exit from the side rather than the top, which can be beneficial in tight installations. The inverter technology adjusts output based on demand, improving efficiency and reducing noise. These units are equipped with titanium heat exchangers for corrosion resistance in saltwater environments.
Raypak Crosswind V Series

The Raypak Crosswind V Series is a vertical discharge heat pump line designed for residential pool heating. These models are available in multiple sizes and include both heating-only units and Deluxe versions that offer heating and cooling. Like other Raypak heat pumps, they use titanium heat exchangers and are designed for energy-efficient temperature maintenance rather than rapid heating. These units are commonly used in climates where energy efficiency and quiet operation are priorities.
Raypak Professional Heat Pump Series

The Raypak Professional Heat Pump Series includes larger-capacity heat pumps designed for commercial and high-demand residential applications. These units typically range around 140,000 to 170,000 BTU and include heating and cooling functionality. Built with heavy-duty construction and titanium heat exchangers, they are intended for continuous operation and larger pool volumes. These systems are often used in commercial pools, community facilities, or large residential installations.
Raypak WeatherKing Series

The Raypak WeatherKing Series is a residential heat pump line designed for dependable and straightforward pool heating. These units use titanium heat exchangers and standard heat pump technology to provide consistent water temperature while maintaining lower operating costs than gas heaters. They are typically used in residential settings where simplicity and reliability are preferred over advanced features.
Raypak E3T Digital Electric Series

The Raypak E3T Digital Electric Series is designed for pool and spa applications where electric heating is required. These heaters use titanium heating elements and stainless steel construction to provide durability in saltwater and chemically treated environments. Electric heaters operate differently than gas heaters or heat pumps, converting electrical energy directly into heat. They are often used for spas, smaller pools, indoor installations, or locations where gas is not available.
Fuel Types and Heating Methods

Illustration for general heating concept only. Actual internal heat exchanger design varies by Raypak model and series.
Raypak heaters are available in natural gas, propane, electric, and heat pump configurations. Natural gas heaters are typically used where a gas line is available and provide strong heating performance. Propane heaters are used in areas without natural gas access and offer similar output. Heat pumps use ambient air to generate heat and are more energy-efficient over time, but heat more slowly. Electric heaters provide direct heating with high efficiency but are typically used for smaller applications due to electrical demand.
Heat Exchanger Materials
Raypak uses different materials depending on the series and application. Copper heat exchangers provide efficient heat transfer and are commonly used in standard residential pools. Cupronickel offers improved corrosion resistance and is better suited for saltwater or aggressive water conditions. NiTek is designed for enhanced durability in certain AVIA models. Titanium is used in heat pumps and electric heaters due to its high resistance to corrosion in chemically treated and saltwater pools.

Each Raypak series is designed with a specific use case in mind, from compact residential heating to commercial-grade systems and energy-efficient heat pumps. Understanding the differences between fuel types, exchanger materials, and performance characteristics can help ensure the correct heater is selected for the pool’s size, environment, and usage requirements.