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Propane & Natural Gas Pool Heaters

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  • Hayward Universal H-Series H200 Low NOx Pool Heater, 200,000 BTU, Propane Gas
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  • Pentair Master Temp Pool Heater Natural Gas, 175,000 BTU
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  • Hayward Universal H-Series H500 Low Nox Pool Heater, 500,000 BTU, Propane Gas - EXPERT LINE NLA
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  • Pentair Master Temp Pool Heater Natural Gas, 300,000 BTU
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  • Pentair Master Temp Pool Heater Natural Gas, 200,000 BTU

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  • Hayward Universal H-Series H500 Low NOx Pool Heater, 500,000 BTU, Natural Gas - EXPERT LINE NLA
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Fast, Powerful Heating with Gas and Propane Pool Heaters

When you need to heat your pool quickly, especially in cooler weather, gas and propane pool heaters are the most effective solution. These high-performance systems deliver rapid temperature increases, making them ideal for both inground and above ground pools, and for pool owners who want on-demand heating without waiting hours or days.

Whether you're looking for a compact propane heater for a weekend swim or a high-BTU natural gas model for a large inground pool, Doheny’s carries a wide range of options to suit your needs.

Why Choose a Gas Pool Heater?

Gas pool heaters are known for their speed, reliability, and cold-weather performance. Unlike heat pumps or solar systems, gas heaters don’t rely on air temperature or sunlight—they generate heat by burning fuel, which means they work efficiently in any climate. Today’s advanced gas heaters are designed to minimize nitrogen oxide (NOx) emissions, helping reduce air pollution while still delivering powerful, consistent heating performance.

Key Benefits:

  • Fast Heating: Raise water temperature by 1–3°F per hour
  • All-Weather Performance: Works even in cold or cloudy conditions
  • On-Demand Use: Perfect for occasional swimmers, weekend, or evening use
  • Compact Options: Available for both above ground and inground pools

Natural Gas vs. Propane Pool Heaters

Both fuel types offer powerful heating, but there are some key differences:

Feature Natural Gas Propane
Fuel Source Requires a gas line Uses refillable tanks
Installation Permanent setup More flexible placement
Best For Homes with existing gas service Homes with existing propane tanks or no access to natural gas

If you already have a natural gas line, a gas heater is usually the most cost-effective choice. If not, propane offers flexibility and portability, especially for above ground or seasonal pools.

Choosing the Right Size Gas Heater

The size of your pool and your desired heating speed will determine the BTU rating you need. Here’s a general guide:

Pool Volume Recommended BTU
Up to 10,000 gallons 100,000–150,000 BTU
10,000–20,000 gallons 150,000–250,000 BTU
20,000–30,000 gallons 250,000–350,000 BTU
30,000+ gallons 350,000–400,000+ BTU

Tip: If you want faster heating or live in a colder climate, consider sizing up.

Installation & Safety Considerations

Gas and propane heaters are powerful appliances and should be installed with care. Here are a few things to keep in mind:

  • Ventilation: Ensure proper airflow and clearance around the unit
  • Fuel Access: Natural gas line, electrical line, or propane tank must be safely connected
  • Maintenance: Regular maintenance, including inspection of burners and heat exchangers, is essential to ensure optimal performance and extend the heater's lifespan.

Frequently Asked Questions

How fast can a gas pool heater warm my pool?

Gas heaters can raise water temperature by 1–3°F per hour, depending on pool size and heater capacity.

Can I install a gas pool heater myself?

Gas and propane heaters are powerful appliances and should be installed with care. While it is easier to replace an already-existing gas heater, connections to the gas and electrical lines still need to be thoroughly checked by a gas company. Professional installation is recommended for new systems.

Are gas pool heaters energy-efficient?

Modern gas heaters are more efficient than older models. Look for units labeled with 'low NOx emissions' for improved energy efficiency for better performance and reduced environmental impact.

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