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9 Best Pool Gas Heaters 2025 in the United States
#1
Winner
Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
The Hayward W3H400FDN is a powerful gas pool heater, boasting a robust 400,000 BTU output which makes it suitable for large in-ground pools and spas. One of its standout features is the durable cupro nickel heat exchanger, designed to resist corrosion and ensure longevity, which is particularly beneficial for pools with fluctuating water chemistry. Its energy-efficient hydraulic design is a plus, as it minimizes the run time required by your circulation pump, potentially leading to lower energy costs over time.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!#2
Hayward W3H150FDN Universal H-Series 150,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
The Hayward W3H150FDN Universal H-Series 150,000 BTU Natural Gas Pool and Spa Heater is designed to deliver reliable and efficient heating for in-ground pools and spas. One of its key strengths is the 150,000 BTU rating, which is suitable for medium-sized pools, allowing for quick and effective heating. The efficiency is enhanced by the industry-leading hydraulic design that reduces circulation pump run time, resulting in energy savings.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!#3
Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
The Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater is a solid choice for those looking to efficiently heat their swimming pools or spas. Rated at 266,000 BTUs, it offers robust heating power, making it suitable for larger pools. One of its strengths is its efficiency; the intermittent spark ignition ensures the pilot light only activates when needed, which can save on gas usage. It also features a programmable thermostat, adding convenience for users who want to maintain a consistent water temperature.
Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Customer Highlights
A summary of real customer reviews to highlight what shoppers are saying!Top 9 Best Pool Gas Heaters 2025 in the United States
#1
Winner
9.9 score
Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
Hayward W3H400FDN Universal H-Series 400,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
BTU (British Thermal Units): 400,000
Efficiency: energy-efficient design
Size and Installation: 39.6 x 32.8 x 30.6 inches
Control Features: user-friendly control pad
Durability and Warranty: durable cupro nickel heat exchanger
Chosen by 1186 this week
Hayward W3H150FDN Universal H-Series 150,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
Hayward W3H150FDN Universal H-Series 150,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
BTU (British Thermal Units): 150,000
Efficiency: Reduces circulation pump run time
Type of Gas: Natural Gas
Size and Installation: 33.3 x 32.8 x 30.6 inches
Control Features: Front-panel access, intuitive control pad
Durability and Warranty: Durable cupro nickel heat exchanger
Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
Raypak 266,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
BTU (British Thermal Units): 266,000
Efficiency: Intermittent spark ignition
Type of Gas: Natural Gas
Size and Installation: 28"D x 28"W x 40"H, 210 lbs
Control Features: Programmable Thermostat
Durability and Warranty: Withstands various weather conditions
Raypak 206,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
Raypak 206,000 BTU Digital Electronic Ignition Natural Gas Pool Heater
BTU (British Thermal Units): 206,000
Efficiency: high efficiency
Type of Gas: Natural Gas
Size and Installation: 40 x 28 x 20 inches
Control Features: Digital Electronic Ignition
Durability and Warranty: withstand various weather conditions
Raypak 406,000 Btu Digital Natural Gas Pool Heater with Cupro Nickel Ray-014941
Raypak 406,000 Btu Digital Natural Gas Pool Heater with Cupro Nickel Ray-014941
BTU (British Thermal Units): 406,000
Type of Gas: Natural Gas
Size and Installation: 44 x 34 x 31 inches, 249 lbs
Control Features: Microprocessor-controlled thermostat
Durability and Warranty: Cupro-nickel heat exchanger, corrosion resistant
Related Products
MasterTemp EC-462027 Heaters, Almond and Black
MasterTemp EC-462027 Heaters, Almond and Black
BTU (British Thermal Units): 250,000 BTU
Efficiency: premix combustion technology
Type of Gas: Propane
Size and Installation: 35.5 x 29.8 x 23 inches
Control Features: user-friendly, intuitive controls
Durability and Warranty: tough, rust-proof exterior
Hayward W3H135FDN H-Series Pool/Spa Heater, 135k BTU, Natural Gas Model
Hayward W3H135FDN H-Series Pool/Spa Heater, 135k BTU, Natural Gas Model
BTU (British Thermal Units): 135,000
Type of Gas: natural gas
Size and Installation: 21.5 x 30 x 22.5 inches
Control Features: intuitive electronic panel
Durability and Warranty: durable cupro nickel heat exchanger
Raypak 009218 PR336AENC49 336000 BTU Natural Gas Pool Heater
Raypak 009218 PR336AENC49 336000 BTU Natural Gas Pool Heater
BTU (British Thermal Units): 336,000
Type of Gas: natural gas
Size and Installation: 44 x 31 x 31 inches
Control Features: backlit LCD, microprocessor ignition
Durability and Warranty: corrosion-free polymer headers
Raypak 014779 PR106AENC 105000 BTU Natural Gas Pool Heater
Raypak 014779 PR106AENC 105000 BTU Natural Gas Pool Heater
BTU (British Thermal Units): 105,000
Type of Gas: natural gas
Size and Installation: 30 x 27 x 16 inches
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Buying Guide for the Best Pool Gas Heaters
Choosing the right pool gas heater can significantly enhance your swimming experience by maintaining a comfortable water temperature. When selecting a pool gas heater, it's essential to consider various specifications to ensure you get the best fit for your needs. Understanding these key specs will help you make an informed decision and enjoy your pool to the fullest.BTU (British Thermal Units)BTU is a measure of the heater's power and indicates how much heat it can produce. The higher the BTU rating, the faster the heater can warm up your pool. For small pools or spas, a lower BTU rating (100,000-200,000 BTUs) may be sufficient. Medium-sized pools typically require 200,000-300,000 BTUs, while large pools may need 300,000 BTUs or more. Consider the size of your pool and how quickly you want it to heat up when choosing the BTU rating.
EfficiencyEfficiency refers to how well the heater converts gas into heat. Higher efficiency means more of the gas is used for heating, which can save you money on fuel costs. Efficiency is usually expressed as a percentage. Standard efficiency heaters are around 80-85%, while high-efficiency models can be 90% or higher. If you use your pool frequently or for extended periods, investing in a high-efficiency heater can be more cost-effective in the long run.
Type of GasPool gas heaters can run on either natural gas or propane. Natural gas is typically more cost-effective and convenient if you already have a natural gas line installed. Propane heaters are a good option if you don't have access to natural gas, but propane can be more expensive. Consider the availability and cost of each fuel type in your area when making your decision.
Size and InstallationThe physical size of the heater and the installation requirements are important to consider. Ensure you have enough space to accommodate the heater and that it can be installed according to local codes and regulations. Some heaters may require professional installation, while others can be installed by a knowledgeable DIYer. Check the manufacturer's guidelines for installation requirements and make sure you have the necessary space and resources.
Control FeaturesModern pool heaters come with various control features, such as digital thermostats, remote controls, and programmable timers. These features can make it easier to maintain your desired pool temperature and improve overall convenience. If you prefer a hands-off approach, look for heaters with advanced control options. If you don't mind manual adjustments, simpler models may suffice.
Durability and WarrantyDurability is crucial for a pool heater, as it will be exposed to the elements and potentially corrosive pool chemicals. Look for heaters made from high-quality, corrosion-resistant materials. Additionally, check the warranty offered by the manufacturer. A longer warranty can provide peace of mind and protection against potential issues. Consider how often you use your pool and the environmental conditions when evaluating durability and warranty options.