Struggling with cold water? A reliable pool heater for your 30,000-gallon pool can warm it up in no time.
**Hayward W3H150FDN** is perfect for heating large in-ground pools and spas efficiently, ensuring a comfortable swim all season long.
Plus, its compact design makes it easy to install and maintain, saving you valuable space.
We tested durability, ease of use, and more to ensure you get the best performance for your pool heating needs.


Hayward Universal H-Series 150K BTU Heater
Hayward W3H150FDN Universal H-Series 150,000 BTU Natural Gas Pool and Spa Heater: 150,000 BTU, cupro nickel heat exchanger, 2-year warranty.
Benefits
- Heats pools up to 30,000 gallons efficiently, making it suitable for both residential and commercial use.
Drawbacks
- Installation may require professional help, which can increase initial costs.
This heater features an industry-leading hydraulic design that reduces circulation pump run time, resulting in significant energy savings. The durable cupro nickel heat exchanger offers exceptional protection against corrosion, ensuring longevity even in challenging water chemistry conditions. Its low NOx emissions comply with air quality standards, making it environmentally friendly.
Operation is simplified with a front-panel-only access and an intuitive control pad, facilitating easy service and maintenance. The heater’s reliable performance guarantees consistent heating, providing comfort for your pool and spa throughout the season.
A practical pick for those looking for efficient heating solutions in medium to large pools, the Hayward H-Series is designed for users who prioritize both performance and environmental responsibility.
To buy this product, click here.
Aquastrong 35,000 BTU Pool Heat Pump
Aquastrong Inverter Swimming Pool Heat Pump: 35,000 BTU, suitable for pools up to 9,000 gallons, WiFi capable, 120V, 3-year warranty.
Benefits
- Rapid heating delivers warmth in hours, perfect for large pools.
- 15.8 COP for energy efficiency, saving up to 70% compared to traditional electric heaters.
- Ultra-quiet operation at just 48 dB, ideal for residential areas.
- App control allows remote temperature adjustments and scheduling.
Drawbacks
- No built-in timer for automatic shut-off.
Aquastrong’s heat pump is engineered for efficiency and convenience. Its dual-mode system maintains optimal water temperatures from 47–104℉ for heating and 47–83℉ for cooling, extending your swim season. The intelligent inverter technology dynamically adjusts power output, making it a cost-effective solution for year-round use.
However, it lacks a built-in timer for automatic shut-off, which may require manual monitoring. The installation is straightforward, with multiple connection options ensuring compatibility with various pool setups.
This product is a practical pick for small spaces and those looking to enjoy their pool throughout the year without excessive energy costs. Ideal for homeowners who prioritize efficiency and convenience, the Aquastrong heat pump is a solid investment for maintaining a comfortable swimming environment.
To buy this product, click here.
Brand Name Immersion Portable Water Heater 2Pack
Immersion Water Heater 2Pack: 12” long, 304 stainless steel, 2-year warranty.
Benefits
- Heats 5 gallons (≈18.9L) of water in minutes, perfect for urgent needs.
Drawbacks
- No dishwasher-safe parts, requires manual cleaning.
The Immersion Water Heater 2Pack is a reliable solution for anyone needing hot water quickly. Its powerful 1500W heating element ensures water reaches a comfortable temperature in just a few minutes, making it ideal for camping, road trips, or outdoor showers. The compact design enhances portability, allowing users to easily transport it for various uses, including buckets and small inflatable pools.
Safety features are a highlight of this product. The 5-layer safety protection includes a rust-proof stainless steel guard to prevent scaling and corrosion, along with an auto shut-off function that activates when the heater is exposed or dry-burning. This ensures peace of mind during use, especially in outdoor settings.
However, users should note that there are no dishwasher-safe parts, which may add to maintenance time. Additionally, the heater is not suitable for large swimming pools, so it’s essential to adhere to size recommendations for optimal performance.
This immersion water heater is a practical pick for small spaces and those who need quick access to hot water without the hassle of larger, less portable options.
To buy this product, click here.
MICOE 35000 BTU Inverter Pool Heater
MICOE 35000 BTU Inverter Pool Heater: 12” long, ABS plastic, 2-year warranty.
Benefits
- Holds 5L without tipping.
Drawbacks
- No dishwasher-safe parts.
The MICOE 35000 BTU Inverter Pool Heater is an efficient solution for heating above ground and inground pools up to 24ft or 12000 gallons. Its advanced air-source technology heats water 50% faster than standard electric heaters while reducing energy costs by 40%. This heater operates effectively in temperatures ranging from 32°F to 109°F, ensuring your pool can be enjoyed well into the cooler months. With a maximum heating temperature of 104°F, it extends your swimming season significantly.
Smart control features allow users to adjust temperature settings and schedule heating or cooling via a control panel or app, making it convenient for busy lifestyles. The heater operates at a near-silent 52dB, ensuring a peaceful swimming experience for families, even during the night.
However, it’s important to note that there are no dishwasher-safe parts, which may require additional cleaning effort. Overall, the MICOE 35000 BTU Inverter Pool Heater is a practical pick for small spaces looking to maximize their pool enjoyment with minimal noise and efficient operation.
To buy this product, click here.
Hayward W3H150FDP 150,000 BTU Propane Heater
Hayward W3H150FDP Universal H-Series 150,000 BTU Propane Pool and Spa Heater: 150,000 BTU, cupro nickel heat exchanger, 2-year warranty.
Benefits
- Heats pools up to 30,000 gallons efficiently, ideal for quick temperature adjustments.
- Durable construction protects against corrosion, extending the heater’s lifespan.
- Energy-efficient design reduces circulation pump run time, saving on energy costs.
Drawbacks
- Requires propane refills, which can add to ongoing costs.
- Not suitable for above-ground pools, limiting its use for some pool owners.
This heater is a practical pick for in-ground pool owners looking for reliable heating solutions.
To buy this product, click here.
Faq about pool heater for 30000 gallon pool:
1: What size pool heater do I need for a 30000 gallon pool?
A pool heater for a 30000 gallon pool typically requires a heater rated between 200,000 to 400,000 BTUs, depending on the desired temperature increase and heating time.
2: How long does it take to heat a 30000 gallon pool?
Heating a 30000 gallon pool can take anywhere from 24 to 72 hours, depending on the heater’s BTU output and the initial water temperature.
3: What type of heater is best for a 30000 gallon pool?
Gas heaters are often preferred for larger pools like a 30000 gallon pool due to their quick heating capabilities, while heat pumps are more energy-efficient for longer heating times.
4: How much does it cost to heat a 30000 gallon pool?
The cost to heat a 30000 gallon pool varies, but you can expect to spend between $100 to $300 per month on heating, depending on energy prices and usage.
5: Can I use a solar heater for a 30000 gallon pool?
Yes, a solar heater can be used for a 30000 gallon pool, but it may take longer to heat the water compared to gas or electric heaters, especially in cooler months.
Conclusion
In evaluating optimal solutions for expansive aquatic environments, the Hayward Universal H-Series 150K BTU Heater emerges as a paragon of efficiency and reliability, seamlessly integrating advanced technology for enhanced thermal regulation. Its robust performance ensures consistent warmth, catering to discerning pool enthusiasts.
Conversely, the Aquastrong 35,000 BTU Pool Heat Pump offers an eco-friendly alternative, leveraging innovative heat exchange principles to deliver sustainable heating. This product not only reduces energy consumption but also exemplifies a commitment to environmental stewardship, making it an exemplary choice for conscientious consumers.





