Does the Raypak 266,000 BTU Natural Gas Pool Heater require a metal heat sink for installation?

You must confirm your gas line provides enough pressure to support a 266,000 BTU load before installation. A qualified installer should verify your local piping can handle this flow to ensure the heater reaches its maximum output.

Raypak 266 pool heater requires ventilation clearance instead of a metal heat sink

The Raypak 266 operates as a pool heater, which is a large metal box that uses gas to warm swimming pool water. We included this model in our comparison of gas-powered options because of its high thermal capacity. Because this unit uses a radiant burner, it does not rely on a secondary heat exchanger to move heat, which eliminates the need for external cooling hardware like a heat sink. However, you must ensure the area around the unit provides sufficient ventilation clearance, which acts as a “virtual” heat sink by allowing hot air to dissipate naturally. Just as a car radiator needs open space to prevent the engine from overheating, this heater requires unobstructed airflow to prevent the housing from trapping heat and shutting down.

You can find more detailed specifications in our full Raypak 266 review.

What to Check Before Buying the Raypak 266

Before purchasing this heater, confirm these requirements to ensure the unit functions correctly in your specific environment:

For a side-by-side look, see how the Raypak 266 compares to others.

• Verify that your local gas utility can provide the 266,000 BTU input required for full operation.
• Measure your available patio space to ensure you can maintain the required ventilation clearance around the unit.
• Confirm your local building codes regarding the distance between gas heaters and any nearby combustible materials.
• Ensure your gas pressure regulator is compatible with high-output radiant burners.

Comparing the Raypak 266 to Other Pool Heaters

The Raypak 266 is a high-capacity option suited for large swimming pools that require significant heat output. Buyers looking for smaller systems or different fuel types might find other options more suitable. If you have a smaller pool that does not require a 266,000 BTU capacity, you might consider a lower-output model that requires less gas infrastructure. Conversely, if you cannot use natural gas, you would need to look at electric or solar thermal alternatives.

If you need a quick summary, view our Raypak 266 quick verdict.

If you have a large pool and a gas supply capable of supporting a 266,000 BTU load, the Raypak 266 is a strong choice for your heating needs.

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.