NEXT DAY DELIVERY
FREE SHIPPINGon orders $49+
Checkout using your account
This form is protected by reCAPTCHA - the Google Privacy Policy and Terms of Service apply.
Checkout as a new customer
Creating an account has many benefits:
- See order and shipping status
- Track order history
- Check out faster
Heat Your Above Ground Pool with the Right Heater
Looking to extend your swim season or enjoy warmer water without waiting for the sun? The right above ground pool heater can make all the difference. Whether you're preparing for early spring dips or keeping the water warm through fall, we offer a wide selection of heaters designed specifically for above ground pools, each with unique benefits to match your climate, budget, and usage needs.
Why You Need a Heater for Your Above Ground Pool
Above ground pools tend to lose heat more quickly than inground pools due to their exposed walls and smaller water volume. That’s why choosing a heater tailored to above ground use is essential. A properly sized heater can:
- Raise water temperature quickly and efficiently
- Extend your swimming season
- Improve comfort for evening or early morning swims
- Reduce heat loss when paired with a solar cover
Whether you're heating a small round pool or a large oval setup, we have options that deliver reliable performance and energy savings.
Types of Above Ground Pool Heaters
Gas Pool Heaters for Above Ground Pools
Above ground gas pool heaters are the fastest way to heat your pool. They run on either natural gas or propane and can raise water temperature by 1–3°F per hour. These heaters are ideal for:
- Any pool size
- Quick evening or weekend heating
- Pools used intermittently
Both propane or natural gas pool heaters are generally cost-effective, but both require gas and electric lines run to them. Look for compact, low-BTU models designed specifically for above ground pools. Many models now feature low NOx emissions, making them a more environmentally friendly option for gas heating.
Heat Pumps for Above Ground Pools
Above ground pool heat pumps are a great choice for energy-conscious pool owners in warmer regions. They work by pulling heat from the surrounding air and transferring it to your pool water. Benefits include:
- Low operating costs
- Quiet performance
- Long lifespan (10–20 years)
Heat pumps are best suited for climates where daytime temperatures stay above 60°F. They may take longer to heat your pool initially, up to 1–2°F per hour in optimal settings, but are excellent for maintaining consistent warmth.
Solar Heaters for Above Ground Pools
Solar pool heaters are the most eco-friendly and cost-effective option over time. These systems use solar panels or mats to absorb heat from the sun and transfer it to your pool water. Ideal for:
- Sunny climates
- Long-term savings
- Environmentally conscious homeowners
Solar heaters require space for panels—either on the ground or a nearby roof—and work best when paired with a solar cover to retain heat overnight. They can raise pool temperatures by up to 10°F, though the timeframe for this increase depends on sun exposure, panel size, and weather conditions.
Choosing the Best Heater for Your Pool Size
| Pool Size | Recommended BTU (Gas) | Recommended BTU (Heat Pump) |
|---|---|---|
| 12'–18' Round | 50,000–75,000 BTU | 50,000–70,000 BTU |
| 21'–24' Round | 75,000–100,000 BTU | 70,000–90,000 BTU |
| 27'–30' Round | 100,000–125,000 BTU | 90,000–110,000 BTU |
| Oval Pools (15'x30'+) | 125,000+ BTU | 110,000+ BTU |
Installation Tips for Above Ground Pool Heaters
Most above ground pool heaters are designed for easy installation. Here are a few things to consider:
- Power/Fuel Source: Ensure you have access to a 120V outlet and a gas line/propane tank for gas heaters, and a 120V outlet for heat pumps.
- Pump Compatibility: Your pool pump must provide adequate water flow (check the GPM rating).
- Space Requirements: Solar heaters need unobstructed sun exposure and enough surface area for panels.
Frequently Asked Questions
Can I use an inground pool heater for an above ground pool?
Absolutely. Especially when it comes to gas or propane heaters, having a larger BTU for your pool size will just help heat your pool faster.
What’s the cheapest way to heat an above ground pool?
Solar heaters offer the lowest long-term cost. They use free solar energy along with your pool pump to heat up your pool.
How long does it take to heat an above ground pool?
It depends on the heater type, pool size, and outside temperature. Gas heaters are fastest, while solar and heat pumps take longer but cost less to run.
Do I need a professional to install my heater?
Heat pumps and solar heaters are often DIY-friendly. Gas heaters may require professional assistance if connecting to a gas line.
Doheny's is #1 in Quality, Price & Service
Service is our passion.
Family owned since 1967, your
satisfaction is our #1 priority. That's why we're America's leading
pool supply.
Fast & free shipping.
We have thousands of items eligible for next day shipping! Shipping is free if you spend over $50.
Spend less. Get more.
We offer only top quality
products and we sell them for
less-guaranteed. That's our
Lowest Price Promise.