Electric vs. Gas Pool Heater: Which Is Best for Your Pool?
Choosing the right pool heater for your home can feel overwhelming. With options like electric heat pump pool heaters and natural gas or propane pool heaters, each offering distinct advantages and disadvantages, making an informed decision requires understanding various factors. These include upfront costs, operational efficiency, your local climate, and specific installation requirements.
At 907 Heating and Plumbing, we are experts in pool heater installation, maintenance, and repair. We’re dedicated to helping homeowners in your service area — such as Alaska’s unique climate — select the perfect heating solution for their needs. In this comprehensive guide, we’ll delve into a detailed comparison of electric vs. gas pool heaters, examining:
- Initial Purchase & Running Costs: How much will it cost to buy, install, and operate?
- Energy Efficiency & Heating Speed: Which heats faster, and which costs less to run long-term?
- Lifespan & Maintenance Needs: How long do they last, and what upkeep is required?
- Climate Suitability: Which performs best in cold or mild temperatures?
- Installation & Space Requirements: What infrastructure do you need?
- Environmental Impact: Understanding their carbon footprint.
By the end of this guide, you’ll have a clear understanding of which heater is the ideal choice for your pool, whether it’s an in-ground pool or an above-ground pool.
Electric Pool Heater vs. Gas Pool Heater: A Detailed Comparison
Let’s break down the key differences to help you decide.
1. Cost Comparison: Upfront vs. Long-Term Savings
Electric Pool Heaters (Heat Pumps)
Upfront Cost: Typically range from $3,000 to $6,000 for the unit and installation. While the unit itself might seem more expensive than some gas models, installation can sometimes be simpler if adequate electrical service is available. They require a dedicated high-voltage circuit.
Operational Cost: These are highly energy-efficient, boasting a Coefficient of Performance (COP) typically ranging from 4.0 to 7.0 (meaning for every unit of electricity consumed, they produce 4-7 units of heat). This translates to significantly lower long-term operating costs compared to gas, especially if electricity prices are stable or you have access to off-peak electricity rates. They are ideal for maintaining a consistent water temperature over extended periods.
Gas Pool Heaters (Natural Gas/Propane)
Upfront Cost: Generally cost between $2,500 and $7,000+ for the unit and installation. The variance depends heavily on whether a new gas line connection is needed, the cost of extending existing lines, or installing a propane tank. This can significantly increase the overall installation cost.
Operational Cost: While they heat water much faster due to their high BTU output, their thermal efficiency is lower (typically 80-85%). This means more energy is lost during the heating process. As a result, gas heaters are generally more expensive to run, especially with fluctuating natural gas or propane prices. They are best suited for occasional use or rapid heating.
2. Heating Speed & Energy Efficiency
Gas Pool Heaters
Speed: These are champions of speed. A natural gas pool heater can raise your pool’s temperature by several degrees per hour, making them ideal for quick heating of cold pool water, or for spas and hot tubs where rapid heating is essential.
Efficiency: Their efficiency is measured by thermal efficiency, typically around 80-85%. While effective at heating quickly, they consume more fuel to achieve the desired temperature.
Electric Heat Pump Pool Heaters
Speed: Heat pumps are slower, typically increasing water temperature by 1-3 degrees per day, depending on pool size and ambient air temperature. They don’t generate heat directly; instead, they transfer heat from the surrounding air to the pool water using a compressor and heat exchanger.
Efficiency: Their high COP makes them the most energy-efficient option for continuous heating. They are designed for maintaining temperature efficiently over longer periods rather than rapid initial heating.
Which Pool Heater Should You Choose?
Making the best decision depends on your specific needs, budget, climate, and how you plan to use your pool.
Choose a Gas Pool Heater If:
- You need fast heating for your pool or spa (e.g., for occasional use, weekend dips, or a vacation home).
- You live in a cold climate where ambient air temperatures frequently drop below 45-50°F.
- You have ready access to affordable natural gas, or you’re willing to manage a propane tank.
- You prioritize rapid temperature increases over long-term energy cost savings.
Choose an Electric Heat Pump Pool Heater If:
- You want lower long-term energy costs and are focused on energy efficiency.
- You live in a mild or warm climate where temperatures rarely dip too low during your heating season.
- You prefer a low-maintenance heating solution with a longer lifespan.
- You plan for extended use or want to maintain a consistent water temperature throughout the day.
- You are concerned about your environmental impact and carbon footprint.
Professional Pool Heater Installation & Repair by 907 Heating and Plumbing
No matter which type of heater you choose, proper pool heater installation and regular maintenance are crucial for optimal performance and longevity.
Expert pool heater installation (for both electric heat pump and gas models)
Comprehensive energy efficiency assessments to maximize your savings
Affordable maintenance & repairs for all major pool heater brands
24/7 emergency plumbing services for any unexpected issues
Whether you need a new heater installed or your current system repaired, our licensed and experienced technicians ensure optimal performance and maximum efficiency for your pool heating system. We can also help you with sizing a pool heater correctly for your pool volume and desired water temperature.
People Also Ask
Q: How much does it cost to run a gas pool heater per month?
A: Approximately $200–$500 per month, but this can vary significantly based on your pool size, local gas rates, desired water temperature, and how often you run it. Running costs are highly dependent on energy consumption.
Q: Do electric heat pump pool heaters work in winter?
A: Electric heat pump pool heaters are less effective in winter. Most models become inefficient or stop working when ambient air temperatures drop below 45-50°F (7-10°C). For consistently freezing temperatures, gas heaters are generally more effective at maintaining pool heat.
Q: How long does a pool heater last?
A: An electric heat pump pool heater typically lasts 10–15 years with minimal maintenance. A gas pool heater generally lasts 5–10 years and requires more frequent servicing to extend its lifespan.