When it comes to heating your above ground pool, choosing between an electric pool heater and a gas pool heater can make a big difference in comfort, cost, and efficiency. Whether you're looking to extend your swimming season or simply enjoy warmer water on cool days, understanding the differences between these two types of heaters will help you make the best investment for your home and climate.
In this guide, we’ll break down how electric and gas heaters work, compare their pros and cons, and help you determine the right choice for your above ground pool.
Electric Heat Pumps are more energy-efficient and better for warm climates and long-term use.
Gas Pool Heaters heat water faster and are ideal for colder climates or occasional heating.
Electric = Lower operating costs, but higher upfront price.
Gas = Faster heat, but higher fuel costs and more maintenance.
Your climate, usage patterns, and utility access should guide your decision.
Electric pool heaters typically use a heat pump system. They don’t generate heat directly. Instead, they extract heat from the air and transfer it to your pool water using a compressor and evaporator coil—much like how an air conditioner works in reverse.
Best For: Moderate climates where the air is consistently above 50°F.
Power Source: Electricity.
Efficiency: High; they can output 3-5 times the energy they consume (COP of 3.0–5.0).
Gas pool heaters use natural gas or propane to generate heat. The gas is burned in a combustion chamber, and the heat exchanger transfers this energy to the water flowing through the system.
Best For: Colder climates or quick heating needs.
Power Source: Natural gas or propane.
Efficiency: Lower than electric heat pumps; more energy is lost during combustion.
| Feature | Electric Pool Heater | Gas Pool Heater |
|---|---|---|
| Initial Cost | Moderate to High | Moderate |
| Operating Cost | Lower (if energy costs are reasonable) | Higher (especially with propane) |
| Heating Speed | Slower | Very fast |
| Efficiency | High in warm climates | Consistent regardless of outside temps |
| Best Climate | Warm or mild temperatures | Cool to cold climates |
| Installation | Easier, fewer safety requirements | May require gas line installation |
| Environmental Impact | Lower (no emissions) | Higher (combustion emissions) |
| Lifespan | 10–15 years | 5–10 years |
| Cost Category | Electric Heat Pump | Gas Pool Heater |
|---|---|---|
| Unit Price | $1,800–$3,500 | $1,200–$2,500 |
| Installation | $300–$600 | $500–$1,500 |
| Monthly Cost | $50–$100 | $200–$400 (varies by gas prices) |
The best heater for your above ground pool depends on several factors:
You live in a warm or mild climate (South, West, coastal areas).
You plan to keep the pool heated consistently.
You want lower long-term operating costs.
Environmental impact is a concern.
You live in a colder climate or at higher elevations.
You only need to heat the pool occasionally or quickly.
You already have a natural gas line available.
Upfront cost is your main concern.
Electric pool heaters (heat pumps) are more energy-efficient, eco-friendly, and ideal for long-term use in warmer regions. Gas pool heaters offer faster heating and better performance in cold weather, but they come with higher operational costs and emissions.
Choosing between the two depends largely on your climate, budget, and how often you plan to use your pool. Evaluate your needs, local utility rates, and installation options before making a decision.
Yes, gas heaters are compatible with above ground pools. Just ensure your pool size matches the heater's BTU rating, and confirm local code requirements for gas installation.
Gas heaters can raise water temperature by 1–2°F per hour, while electric heat pumps may take longer—typically 1°F every 2–3 hours depending on air temperature.