Does the Raypak 336,000 BTU Digital Electronic Ignition Natural Gas Pool Heater fit in a space without metal heat sinks?

You must confirm your installation site provides enough clearance for the 44 x 31 x 31 inch dimensions and ensure your local fire codes allow for the proximity of gas-fired equipment to nearby structures.

Raypak 336 design eliminates the need for external metal heat sinks

The Raypak 336 utilizes a design where the material does not retain residual heat after being turned off, eliminating the need for external cooling structures. Because this is a natural gas pool heater—a large metal box that uses gas to warm pool water—proper airflow is essential to prevent the unit from overheating. Does your current space provide enough room for the unit to breathe? The 336,000 BTU heating capacity requires sufficient combustion air, which is the oxygen used for burning fuel, to reach the heat exchanger. We included the Raypak 336 in our comparison of gas heaters because it offers a high thermal output for large bodies of water. While the unit does not require a specific mounting bracket, you must verify that your ground surface can support the 230-pound weight of the unit.

You can see how it stacks up against rivals in our Raypak 336 comparison analysis.

What to Check Before Buying the Raypak 336

Before purchasing, verify these site-specific requirements to ensure the heater functions safely in your environment:

• Measure the available footprint to ensure you have at least 44 x 31 x 31 inches of unobstructed space.
• Confirm your local fire codes regarding “non-combustible” clearance for gas-fired equipment near walls or fences.
• Verify the location of your flue system, which is the exhaust pipe that carries combustion gases away from the heater.
• Ensure there is a clear path for intake air to reach the heat exchanger to prevent the unit from shutting down.
• Check that your fuel source provides a consistent natural gas supply to meet the 336,000 BTU demand.

Evaluating the Raypak 336 Against Other Options

The Raypak 336 is a high-capacity solution designed for users who need to heat large volumes of water quickly, such as a 20,000-gallon pool. Buyers who require a smaller footprint or a different fuel source, such as propane, should look at alternatives that offer lower BTU ratings or different fuel configurations. If you do not have access to a natural gas line or require a more compact unit for a small spa, a different model may better suit your infrastructure.

For a deeper look at output, see the Raypak 336 performance breakdown.

You should choose the Raypak 336 if you have a natural gas connection and need a high-output heater capable of reaching 336,000 BTU to maintain a large pool’s temperature.

Reviewed by the Refrigerant Recovery Pro editorial team. Refrigerant Recovery Pro writes these guides from the 200 most-reviewed pool heat exchanger listings in our retail dataset, not from manufacturer copy.