The 11 best budget pool heaters of 2025

All-Season Pool Comfort: Featuring innovative dual-mode temperature control, this heat pump precisely heats water between 59–104°F or cools it within 59–83°F. By maintaining consistent thermal regulation, it extends swimming seasons by up to 6 months while delivering year-round comfort for pool enjoyment.

Professional Thermal Performance: Featuring a 16,000 BTU high-output heating module, this 4-season system is designed for 5,000-gallon pools. The precision thermostat maintains ±2°F temperature accuracy by continuously monitoring ambient conditions, ensuring consistent comfort throughout the year.

Energy Efficiency Redefined: With a high 5.5 COP, this ultra-efficient heat pump employs a powerful engine to ensure consistent energy savings. In comparison with conventional electric heating, it slashes energy consumption by 70% and provides 40% more savings than natural gas alternatives.

Quiet Operation & Defrost: With ultra-quiet technology, the operating sound is maintained at 38 dB, which is quieter than a whisper. You can enjoy the comfort brought by the heat pump heating without being affected by any noise.Intelligent auto-defrost system that automatically removes ice buildup without manual intervention.

Easy to Assemble: This heat pump comes with both 1.25" hose adapters and 1.5" conversion kits for easy installation, completed in under 10 minutes. The panel supports multi-mode smart control, complemented by a 3-year comprehensive warranty and lifetime technical support.

Solar heater mat uses solar technology to increase the temperature of the pool water by approximately 5 to 9 degrees depending on the weather

Features an 11-square-foot surface to absorb the sun's rays to heat up above-ground pools; Dimensions (L x W): 47.25 x 47.25 inches (flat)

Simple and economical to use, compatible with filter pumps with up to 1/3 HP or a pump flow rate less than 2,000 GPH; Weight: 6.41 pounds

Includes a 1.25-inch hose attachment point, a bypass valve, 1 adaptor A, and 1 adaptor B for a 1.50-inch hose connection

Constructed of heavy-duty UV stabilized PVC; Suitable for above-ground pools up to 8000 gallons; Folds for compact winter storage

Optimal performance: Max output of 16000 BTU and COP up to 4.3, Varpoolfaye pool heater pump can heat above or inground pool up to 5000 gallon. Stay comfortable with heating from 59-104°F and cooling from 46-82°F

Dual mode and WiFi control: Electric above ground pool heater has both heating and cooling mode, providing versatility to adapt to various weather conditions. The WiFi connectivity allows you to set the heater details or timed on/off from anywhere at any time

Low consumption: 120v pool heater utilizes a minimal amount of electricity to absorb heat from the surrounding air and transfer it to your pool water, effectively maintaining the desired water temperature and low electric bill

Silent running: With a noise level of only 50dB, pool heater ensures a peaceful and relaxing swimming experience, allowing you to fully enjoy your time in and around the pool

Easy setup: The Varpoolfaye pool heat pump comes with DN32-38 mm connector*2, a power cord, making installation quick and hassle-free. In case of any questions or concerns, refer to the user manual or online store for support

【The Perfect Choice for Above-Ground Pools 】- Designed specifically for above-ground pools, our pool heater operates efficiently in outdoor temperatures ranging from 40ºF to 110ºF. With a maximum output of 16,184 BTU/hr, it’s ideal for above-ground pools up to 6,000 gallons.

【Powerful & Efficient Heating 】- Featuring a high-performance compressor, our pool heat pump delivers a heating capacity of 16,184 BTU/hr. The pure titanium heat exchanger ensures durability and corrosion resistance, while the smart control system maintains a steady pool temperature. Plus, the built-in 4-way valve enables automatic defrosting for consistent operation in cooler conditions.

【Advanced Safety Features 】- Safety is our priority. Our pool heater comes with a child lock and an advanced protection system to safeguard against electrical leakage, voltage fluctuations, extreme temperatures, and compressor overheating, ensuring peace of mind while you enjoy your pool.

【Quick & Easy Setup 】- No need for professional installation! Our heat pump pool heater is designed for simple DIY setup—just connect a few fittings, plug it in, and you’re ready to go. The intelligent control system keeps your pool at your desired temperature automatically, so you can sit back and enjoy warm, comfortable water without constant adjustments.

【Extend Your Swimming Season】-Built to maximize your pool enjoyment, this pool heater efficiently warms above-ground and small in-ground pools, even in ambient temperatures as low as 40ºF. Capable of heating water up to 110ºF, it helps extend your swimming season for months, letting you enjoy your pool well beyond summer.

5 & Safe: 1.Rust Proof 304 Stainless Steel Guard 2. Power Indicator 3. thicker copper cord 4. Auto Shut-Off 5. Better insulation and airtightness. Please note if using in outdoor Inflatable swimming pool one should not be enough and not suggest to use for big swimming pool

Efficient Heating: 1500W high-power immersion Water heater can make 5 gallons of water warm in a few minutes. Before inserting the heater, please make sure that the heater is completely immersed in the water then connect the 120v/110v power supply. While camping can bring this portable bucket heater and can enjooy shower even outside. You no longer need to wait for a long time for warm water, you can enjoy hot water in just a few minutes

Widely Use--- Immersion water heater can be used in water, especially fit for heating water in large size container like bucket, basin, bath tub, mini inflatable swimming pool, etc.This immersion heater is handy and super lightweight, making it perfect for travels and road trips.

Safety Tip: Make sure completely immersed in water in working condition. Please do not plug the two heaters into the same outlet.. Please take out the heater before touching the water! Do not ever use this immersion heater for inflatable and bathtub to heat. While using water don’t put your hand into the liquid when the electric water heater is plugged in.The protection plug of leakage is not a power switch.Make sure the water level is enough before use. Read the instructions carefully before using

Package Included--- 2 pack bucket heater + 2 digital thermometer + 2 Manual + 2 steel wool + 2 sand paper.

1. Powerful & Rapid Heating: Equipped with a robust 1500W heating element, the KVNTOOLS portable water heater delivers fast and efficient heating performance. It quickly warms up water in various containers like bathtubs, buckets, hot tubs, and mini inflatable pools, ensuring you enjoy warm water whenever and wherever you need it.

2.Versatile Applications: This versatile bathtub water heater is designed for a wide range of applications. Whether you're warming up water in a bucket for household tasks or creating a relaxing hot tub experience, this heater fits seamlessly into multiple scenarios, enhancing your daily routines and leisure activities.

3. Compact & Portable: Compact and lightweight, this immersion heater is easy to store and transport. Its portable nature allows you to take it anywhere—from home to outdoor settings—making it an indispensable tool for quick and convenient water heating needs.

4. Easy to Use: The KVNTOOLS portable water heater is incredibly user-friendly. Simply plug it in, immerse it in the water, and let it do its job. The intuitive design and straightforward operation make it accessible for everyone, from busy parents to relaxation-seeking adults.

5. Safety First: To ensure safe operation of the heater, always plug it into a grounded outlet that matches its voltage rating. Never immerse it beyond the maximum water level of 1.5m (59 inches), and avoid leaving it unattended while in use. Regular inspections of the thick copper wire and insulation are crucial to prevent hazards, along with keeping the drain hole unobstructed. Remember to unplug the heater immediately after use and store it in a cool, dry place. Prioritizing safety will help prevent electric shock, burns, or fire.

[A better way to extend the swimming season]: A warm pool for your kids, pets and the whole family! What you need is an efficient, low operating cost heating system - an ECO POOLTECH pool heating pump for your pool that extends play for months! **Verified performance, no false claims **: As a responsible brand, ECO POOLTECH ensures all data is based on tested results, with no inflated claims.

[Save Money]: Base on heat pump technology, the EU50 heat pump absorbs energy from the air and transfers it into the water. So the operation only requires very limited electric input, hence its high efficiency and heat conversion rate can reach a score of COP 5.6. In other words, for every cent of electricity spent, 5.6 times heat is generated!

[Ideal for Above Ground Pools]: The Pool heat pump EU50 is designed for above ground pools with up to 5000 gallons of water (No bigger than 15ft round or 9x18ft rectangular). This unit can operate at outdoor temperatures of 40ºF to 105 ºF, under optimal operating conditions the pool can be heated up to 100ºF.

[Easy to Install]:The pool heater EU50 allowing fast and easy hookup without professional installation. Just hook up several quick connectors, then plug and play. No need tools, no need plumber.

[Built in flow sensor] The machine is equipped with a water flow sensor, which can automatically control the working time of the heater through the timing setting of the water pump.Pure titanium heat exchanger safe for salty water. Intelligent control system, easy to operate.

[A better way to extend the swimming season]: A warm pool for your kids, pets and the whole family! What you need is an efficient, low operating cost heating system - an ECO POOLTECH pool heating pump for your pool that extends play for months! **Verified performance, no false claims **: As a responsible brand, ECO POOLTECH ensures all data is based on tested results, with no inflated claims.

[Save Money]: Base on heat pump technology, the EU50 heat pump absorbs energy from the air and transfers it into the water. So the operation only requires very limited electric input, hence its high efficiency and heat conversion rate can reach a score of COP 5.62. In other words, for every cent of electricity spent, 5.44 times heat is generated!

[Ideal for Above Ground Pools]: The Pool heat pump EU50 is designed for above ground pools with up to 5000 gallons of water (No bigger than 15ft round or 9x18ft rectangular). This unit can operate at outdoor temperatures of 40ºF to 105 ºF, under optimal operating conditions the pool can be heated up to 100ºF.

[Easy to Install]:The pool heater EU50 allowing fast and easy hookup without professional installation. Just hook up several quick connectors, then plug and play. No need tools, no need plumber.

[Built in flow sensor] The machine is equipped with a water flow sensor, which can automatically control the working time of the heater through the timing setting of the water pump.Pure titanium heat exchanger safe for salty water. Intelligent control system, easy to operate.

Swim Comfortably Longer: Heat pools up to 8000 gallons or 18 ft in diameter, keeping the water warm and inviting throughout the season.

Eco-Friendly Efficiency: Inverter technology adjusts power usage as needed, reducing energy consumption without compromising performance.

Smart WiFi Control: Use our app to control the heater remotely, adjust schedules, and set temperatures with ease.

Heavy-Duty Components: The titanium heat exchanger resists corrosion, even in saltwater, providing consistent heating.

Durable Weather Protection: The galvanized steel and evaporator shield guard against weather damage, keeping the pump efficient year-round.

Quick Installation Process: Install the heat pump in 30 minutes or less with no need for professional help or voltage conversion.

Safety You Can Trust: Leakage protection plug, flow-switch, and sensors ensure safe operation, providing you with a effortless pool heating solution.

Reliable in Any Weather: Engineered to perform consistently in harsh conditions, this heat pump protects critical components for long-term durability.

Detailed Specs: 30,000 BTU heat capacity, C.O.P efficiency: 6.0, Power: 110-120 V / 60 Hz. Product size: 35.31" × 13.88" × 21.98". Weight: 90.4 lbs.

🌐【Eco-friendly Solar Heating】Harness the sun's energy for a green and energy-efficient pool heating solution for a sustainable and cost-effective way to keep your pool warm, allowing you to enjoy a luxurious swim without harming the environment.

🌞【Sun-Kissed Efficiency】Curved design maximizes sunlight exposure, enhancing heating efficiency for a warmer and cozier pool. The included plumber's tape reinforces the connection between the pipes and the heater, making it less prone to leaks.

✅【Premium HDPE Material】Enjoy superior insulation and heating performance with our high-quality HDPE solar pool heater that will hold up against frequent exposure to the sun and outdoor elements. Besides, the upgraded hose has a thickened design to avoid water leakage.

🏊‍【Extended Swim Season】The curve solar pool heater has been designed for above-ground and most inground pools. Dive into a prolonged swimming season with our upgraded solar pool heater.

⚙️【Easy Installation】Our solar pool heater includes the complete set of accessories, ensuring you spend less time on setup. Feel free to contact our online customer service if you have any questions.

❗【NOTE】Please avoid moving the heating plate during use to prevent potential damage. To avoid leaks, try to wrap several layers of tape around the connection and tighten the hose clamps.

The Hayward Universal H-Series 250,000 BTU Natural Gas Heater delivers premium heating performance for years of reliable, long-lasting comfort

A durable cupro nickel heat exchanger offers exceptional protection against corrosion and premature failure caused by unbalanced water chemistry

Industry-leading hydraulic design reduces circulation pump run time to provide major energy savings

Front-panel-only access and intuitive control pad provide easy operation, service and maintenance

Low NOx emissions meet air quality standards in all low-NOx areas, ensuring low environmental impact