Top 10 Best pool heaters in 2026

Last Updated - 6/11/2026

🏆Best Choice

FIVECUBS

Pool Heater, Portable Water Heater 2000W - Immersion Heater with Digital Thermometer, Upgraded Magnesium Oxide Heating for Fast Heating, for Small Pools, Bathtubs, Buckets, Tanks

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•【PROFESSIONAL SAFETY & AUTO SHUT-OFF】 This immersion water heater is your ultimate safety partner. The intelligent system automatically powers off the 2000W heating element once water hits the perfect temp of 165°F (75°C), preventing scalding risks. The durable stainless steel build resists rust. Remember: Always fully submerge this bucket heater in water before plugging into a 110V outlet to avoid damage or fire hazard.
•【RAPID 2000W HEATING POWER】 Say goodbye to cold water! Our 2000W high-efficiency portable water heater rapidly takes the chill off, warming up 5 gallons in just minutes. It's the perfect pool heater for inflatable pools, small stock tanks, and buckets. The perforated guard maximizes heat dispersion for faster, more even heating. Pro Tip: For larger tubs, use multiple units on separate circuits to speed up the process.
•【ULTIMATE PORTABILITY FOR ANY SCENE】 Your go-to heating solution anywhere! This lightweight and compact immersion heater is ideal for camping, farms, garages, or bathrooms. Use it effortlessly as a hot tub heater for portable spas, a pool warmer for kiddie pools, or to heat water for chores and pets. Critical: Keep it 3+ feet away from gases or flammables during operation.
•【SMART LCD TEMPERATURE MONITORING】 Precision heating at a glance! The built-in digital thermometer displays real-time water temperature, so you never have to guess. A clear power indicator light lets you know it's working. Just immerse, plug in, and monitor—it’s that easy! Always ensure no people or pets are in the water while this pool heater is running.
•【COMPLETE KIT & WORRY-FREE WARRANTY】 Everything you need is in the box: the FIVECUBS immersion heater, LCD thermometer, and user manual. It makes a practical gift for anyone. Your satisfaction is 100% guaranteed. Our US-based support team is ready to assist you with any questions or needs.

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$29.99

$39.99

-25%

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Lakkzoom

Immersion Water Heater,with 304 Stainless Steel Cover Intelligent Temperature Control and UL Certification Portable Bucket Heater Heat 5 Gallons of Water in Minutes

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Safety design: UL certified instant water heater with high-quality stainless steel protective cover, effectively prevent heating elements from direct contact with humans or animals, rust resistant and durable. Our immersion water heaters are designed with intelligent temperature control and automatically cut off the power when the water temperature reaches 75 ° C (165°F).WARNING:When using, first put the water heater into the water, be sure to ensure that the water heater is fully immersed in water, and then plug in the socket. Determine the operation sequence to effectively prevent fire.
•Fast Heating:1500W high-power electric water heater can heat up to 5 gallons of water in minutes. Heat dissipates to the water faster by flowing through the holes in the guard. The heater needs to be completely immersed in water in working condition. Please take out the immersion water heater before touching the water! WARNING: It is recommended not to use more than one hour, you need to quickly heat a lot of water can use more than one water heater at the same time, But never plug two water heaters into the same socket to avoid causing a fire.
•Wide Range Of Applications:Our portable pool heater suitable for portable bathtub,mini pool(Using more than one),sink, bucket, washbasin,etc.Make sure the container can hold hot water when using it.This immersion heater is handy and super lightweight, making it perfect for travels and road trips.Note, it is not suitable for using in big swimming pool .WARNING：Environmental problems: The use of the Immersion Water Heater did not operate this appliance within 3 ft (1 m) of any structure,combustible material, or other gas cylinders which increase the risk of fire.
•Easy To Use :Take Electric Submersible water heater immerse in water at proper level,Plug into any grounded 110V AC outlet. with a digital LCD thermometer, easy to measure water temperature. Check power indicator light to make sure immersion water heater is working .Please note: people and animal can't be in the water while the heater is working.WARNING: Always make sure that the Water Heater is completely immersed in water when using, do not let part of it exposed to the air, which can cause a fire.
•Satisfactory Service: Lakkzoom immersion heater provides replacement service, when you encounter product quality problems and use problems, please contact us in time, we will provide you with professional and satisfactory service. Our portable water heater contains 1* water heater, 1* digital thermometer, 1* stainless steel cleaning ball, 1* instruction manual, This is a gift for friends and family.

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$29.97

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Intex

Intex 28685E 47 Inch x 47 Inch Solar Pool Water Heater Mat for 8,000 Gallon Above Ground Swimming Pool with Hose Attachment and Adaptors, Black

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•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

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$27.95

$31.03

-10%

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HeavenBird

Portable Immersion Water Heater with Stainless Steel Cover, Quick Heating Immersion Heater with LCD Thermometer, Anti-scalding Bucket Heater for Indoor & Outdoor (2 Pcs, Black)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Double Safety Protection: According to customer demand, we have upgraded the electric heater with built-in temperature control and fuse, automatically stop heating and maintain the temperature when the water temperature reaches 167℉. The fuse can cut off the power to avoid fire, providing double safety protection and enjoying a comfortable soak at home. Heaters are NOT suitable for liquid heating in standard drinking cups‌ due to critical operational constraints and safety considerations‌
•Fast Heating: 1500W high power fast immersion water heater can heat 5 gallons of ROOM TEMPERATURE WATER in minutes, saving energy and money. If you want to heat up for a shorter time, you can use 2 water heaters at the same time, but be careful NOT to use them on the SAME OUTLET. The heating time will be little longer in cold weather. We recommend a maximum use time of 3 hours. And this immersion heater is ONLY for WATER HEATING.
•Simple Operation: Immersion water heater is easy to use, make sure the immersion water heater is fully immersed in water and the water level is sufficient before powering it on. Keep watching and keep hands off. Once water is hot enough or boiling, unplug the heater and wait a few seconds before removing it from the water. You can also use the thermometer probe to measure the water tempetature, simply place it in the water.
•Anti-scalding & Corrosion Resistance: The pool heater with corrosion resistance stainless steel protective guard can effectively prevent the heating element from directly contacting the people or animals, both sides are fixed with mechanical and AB glue, which has strong sealing and is safer. Strong corrosion resistance, for you to solve the trouble of no hot water.
•Widely Use: The heater can be used for inflatable swimming pool, bucket, washbasin, bathtub, washbasin, construction, car washing, etc. The immersion heater is lightweight and small, easy to carry when you go camping. As standby water heater of combined boiler.

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$29.99

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Titikula

Water Heater for Bathtub and Bucket, 1800W Fast Heating with Real Time Temperature Display, Adjustable Thermostat and Anti Dry Burn Protection, Stainless Steel Heating Rod, Immersion Heater

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Advanced Safety Features with Auto Shutoff & Durable Materials: This immersion water heater ensures reliable operation and is designed with multiple safety protections, including automatic shutoff and dry burn prevention. The high-quality stainless steel heating rods and reinforced 14-gauge power cord resist overheating, corrosion, and electrical risks. Each unit undergoes strict testing to meet high safety and durability standards, making it a dependable choice for household and farm use
•Smart Temperature Control with Auto Heating and Shutoff: This immersion water heater allows users to set a preferred water temperature with an adjustable thermostat. By default, it heats up to 175°F (79°C), but you can adjust it to a lower setting, such as 120°F. Once the water reaches the target temperature, it automatically shuts off and restarts heating when it drops 15°F below, helping to maintain a steady and comfortable temperature
•1800W Efficient Heating for Bathtubs, Hot Tubs, and More: The 1800W heating element gradually warms water based on volume and initial temperature. Ideal for bathtubs, hot tubs, buckets, pools, farm tanks, and other heating needs, this unit is suitable for home, garage, basement, and farm applications. Whether used as a hot tub heater, bucket heater, or emergency water heater, it delivers consistent heating performance
•Real-Time Temperature Display for Easy Monitoring: The built-in LED display shows the current water temperature for easy monitoring. Due to sensor placement, the displayed temperature may be approximately 5°F higher than the actual water temperature. This helps users gauge water conditions for household, winter heating, and farm applications
•Heavy Duty Stainless Steel Build for Long-Term Use: Constructed with high-grade stainless steel heating rods, this immersion heater is corrosion-resistant and durable. The reinforced power cord enhances electrical safety and ensures stable power delivery. This unit is designed for long-lasting performance and is suitable for buckets, tubs, livestock tanks, and portable pools

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$58.99

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yoisie

Immersion Water Heater 1800W, Portable Mini Pool Heater, Bucket Heater, Adjustable Thermostat, Real Time Temperature Display, Anti Dry Burn Protection, for Bathtub, hot tub, Inflatable Pools, 120V

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Safety‑First, Built-To-Last – Automatic shut‑off and dry‑burn protection cut power the instant water runs low, keeping this immersion water heater safe in any bucket, tub, or trough. A 304‑grade stainless‑steel heating rod, reinforced 14‑gauge power cord, and moisture‑sealed PCB packed with premium electronic components all resist corrosion, overheating, and electrical stress. Each portable water heater is individually tested to rigorous safety and durability standards, delivering dependable performance for household baths and farm chores alike
•Real‑Time Temp Control – See the temperature live and dial in the heat you prefer. Because the probe sits close to the heating tube, setting 120°F yields about 110°F water. The immersion water heater pauses at your setpoint, restarts after a 15 °F drop (factory max 175 °F), and, as a truly portable water heater, keeps baths, buckets, and kiddie pools warm without constant checks
•1800 W Efficient Heating – The powerful 1800 W element steadily raises water temperature, adapting to the starting heat and volume of any tub or tank. Perfect for bathrooms, garages, basements, and farm tanks, it warms bathtubs, hot tubs, buckets, pools, and stock tanks on demand. Whether you need an above ground pool heater, a dependable bathtub heater, or a quick‑acting bucket heater, it delivers consistent warmth for everyday comfort or emergency use
•Plug‑and‑Play Portability – Submerge the heater, place the digital controller on a dry surface beside the container, and plug it into any standard 120 V outlet. A 6.6 ft / 2 m reinforced cord and lightweight design let you move effortlessly among tubs, buckets, stock tanks, and campsite setups—no tools or plumbing required
•Rugged Stainless Build & Easy‑Clean Guard – The detachable anti‑scald guard protects skin and tubs while letting water circulate freely. Smooth 304‑stainless components on this submersible water heater rinse clean in seconds and shrug off hard‑water scale, keeping your bathtub heater and immersion heater sanitary and ready for every soak

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$58.99

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CCBOKZZE

Immersion Water Heater, Water Heater Electric for Above Ground Pool Bathtub, Bucket Heater with 2000W, Water Warmer Immersion Heater 5 Gallons of Water in Minutes

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•🌺【hot tub heater Safety And Practicality】This water warmer for above ground pool UL-recognized immersion hot tub heater is equipped with a 304 stainless steel shield that prevents direct contact between the internal heating element and people or animals, Water heaters by flowing through the holes in the guard.our water warmer for inflatable pool upgrade design ensures optimal performance!
•🌺【Immersion Water Heater】The electric water heater operates at 110-125V AC. Porous design with good thermal conductivity. Pond heater will quickly heat 5 gallons of water with high power in a few minutes(longer in winter).If too much water is heated it takes more time or more than two products are used at the same time.
•🌺【ACCURATE TEMPERATURE CONTROL】Portable water heater One of the standout features of this pool heater is its built-in adjustable thermostat. This pool heater for above ground pool allows you to set the desired temperature for your water, ensuring that it is heated to the perfect temperature for your needs.bucket heater equipped with LCD thermometer allows to monitor precision water temperature. You can set appointment time and water temperature freely, protable water heater will auto-off when reaches certain temperature
•🌺【Small water heater electric To Use】Take water heater electric immerse in water at proper level,Plug into any grounded 120V AC outlet.Pond heaters for small ponds with a digital LCD thermometer, Pool heater for inflatable pool easy to measure water temperature.Bucket heater check power indicator light to make sure immersion water heater is working .Please note: people and animal can't be in the water while the bathtub heater is working.
•🌺【VERSATILE Pool Heater For Above Ground Pool】This immersion water heater can be used not just for swimming pools, but also for hot tubs, bathtubs, mini inflatable swimming pool, camping shower,farm animals’ water, window washing water and more. Portable hot water heater is not suitable for using in big swimming pool.you no longer need to wait for a long time for warm water. When you get an above grond pool heater , you can enjoy hot water in just a few minutes.
•🌺【Drop in water heater Warning】Please make sure tha pool warmers for above ground pools immersed in the water. Do not use water heater, for more than 3 hours continuously!Do not plug two camping Pond heater into the same outlet to avoid fire hazards! Water heater for above ground pool！Immersion heater for above ground pool Perfect for portable water heater！
•🌺【Immersion water heater】Water heater electric！camping water heater,you can have a wonderful hot shower, Pond heate rwash your pets, Pond heaters for small ponds heat your farm animals'water in winter, bucket heater awesome camping necessity.

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$44.59

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Treela

Treela 2 Pcs Immersion Water Heaters Portable Electric Submersible Pool/Hot Tub Heater with 304 SS for Bathtub, Bucket, Basin 5 Gallon Water in Minutes(Yellow,1500W)

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Heat Fast: there are 2 pieces of the electric pool heaters, they have porous surface made of 304 stainless steel, with the high power, so that they feature the reliable thermal conductivity, and can help you quickly up heat 5 gallons of water in minutes, bringing you an enjoyable using experience
•Dependable and Safe: designed with reliable automatic power off function, the bath tub heater for bath can automatically turn off when the water getting 120 to160 degrees Fahrenheit, which relieves you from worries about fire in some way, and allows you to use it with confidence; When heating the inflatable pool, please avoid the contact of the heater with the inflatable pool to prevent damage
•Simple to Apply: place the pool water heater in a container, then fill the container with water to completely cover the heater, including the stainless steel shroud and plastic parts, and plug the heater into a properly grounded 120V alternating current outlet, turn on the heater, and wait for the heating to finish
•Extensive Applications: the immersion water heater is suitable for containers in various sizes, like portable bathtubs, pond, sink, bucket, mini inflatable swimming pools; Please make sure that your container is designed to hold boiling water; And it is ideal for activities, like washing your car in winter, heating water for farm animals and more; Not recommended for use in large pools; If using an extension cord, check the maximum power usage of the extension cord
•Kind Notice: when working, the portable hot water heater, should be completely submerged in water; Please do not continuously use it for more than 3 hours; To avoid scalding and electric shock, keep away from boiling water during the heating process, and unplug it before touching water ; Furthermore, if your bathtub or small swimming pool has a large capacity and requires more than 2 heaters to be heated at the same time, please do not plug 2 heaters into the same outlet to avoid a fire

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$29.99

$31.99

-6%

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MICOE

MICOE 17000 BTU Energy Efficient Electric Pool Heater - for Above Ground Pools Up to 15ft (8/11/15ft) & 5,000 Gallons, Ultra Quiet 50dB, 110V/120V with Easy Install Kit

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Large Heating Capacity : 17,000 BTU high-efficiency heating system designed specifically for 8-15ft (5,000 gallon) above-ground pools. Using our regional temperature guide to match your zone
•Energy-Saving Professional: Utilizes advanced air-source pool heater technology that heats 50% faster than standard electric heaters while reducing energy costs by 40%
•Extend the Swimming Season : Designed for above ground pools, the micoe pool heater operates in 32°F to 109°F and heats water to 104°F under optimal conditions, extending your pool season through early spring and late fall
•Quiet Operation : Maintains peaceful family swim time with near-silent 50dB noise level，it ensures zero disturbance for you and your children even at night
•3-Step Easy Installation: Complete installation kit included: 1) Connect adapter fittings 2) Plug into power 3) Start heating. Ready in 15 minutes with no special tools or technicians required.
•Warm Tips:1) In autumn, cover the swimming pool with an insulation cover to avoid heat loss caused by temperature differences. 2) After receiving the pool heater, please let it stand for 24 hours before installing and running. 3) Keep the air circulating near the pool heater during operation and make sure it is not covered by anything

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$598.21

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GRILLME

GRILLME 240V 3000W NEMA 6-15P Plug Immersion Bathtub and Swimming Pool Water Heater,Fully Submersible Portable Electric Heater,30 Galons Bathtub Heater,200 Galons Swimming Pool Heater,100% Waterproof

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Product Parameters: 240V 3000W (*Notice:Must Use NEMA 6-15P 15A Outlet, This Heater is 12.5A Current) , Heater Length 13.5 Inches, Power Cord Length 118 Inches.
•Fast Heating: The 3000W Heater Can Increase The Water Temperature Of A 30 Gallons Bathtub By 50 Degrees Fahrenheit Within 30 Minutes（Make Sure You Have A NEMA 6-15P 15A Outlet In Your Home）.
•High Quality Material: The Shell Of The Heater Is Made Of Stainless Steel 316L Material, Which Has Better High-temperature And Corrosion Resistance Than Stainless Steel 304. The Anti Scalding Sheath Of The Heater Can Avoid Damaging The Container During Use.
•Notice: The Heater Needs To Be Completely Submerged In Water During The Heating Process To Avoid Dry Burning Damage. This Product Is Only Suitable For Heating Tap Water And Is Not Suitable For Heating Corrosive Liquids Such As Well Water,Seawater, Acids, Alkalis, etc.If There Is Scale On The Surface Of The Heater, It Should Be Regularly Removed With A Scale Remover Or Vinegar.
•Warranty: This Product Provides A One-year Warranty, And Is Free To Return Or Exchange If Damaged During Normal Use.

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$69.89

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