Top 10 Best spa heater in 2026

Last Updated - 6/15/2026

🏆Best Choice

HOSPAN

HOSPAN Collapsible Foot Spa with Heat, Bubble, Red Light, and Temperature Control, Foot Bath Massager with 8 Shiatsu Massage Rollers, Pedicure Foot Spa for Relaxation and Stress Relief, Black

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Intelligent Temperature Control & Timer: The foot bath has an intelligent temperature control function that can be adjusted between 95°F-118°F, and it can maintain the water temperature without the need for additional hot water. The built-in timer can be set from 10 to 60 minutes, providing a comfortable and relaxing foot spa experience
•Upgrade Massage Design: Hospan 3.0 version of the non-motorized massage roller foot massager spa features 8 groups of massage rollers and 4 groups of shiatsu massage, provides targeted relief to tired and achy feet, stimulates blood flow, and revitalizes tired feet
•Handle & Drainage Outlet Design: Equipped with an upgraded and reinforced front handle and drainage outlet, the foot soak tub offers increased portability and safe water drainage, making it particularly suitable for elderly users who prioritize ease of use and safety
•Bubble & Red Light: This foot bath spa with heat and massage has various special features such as heat, bubbles, and red light, which help to relieve stress while massaging your feet. The oxygen bubbles continuously surge and impact the soles of the feet, providing a gentle massage like that of spring water, while ensuring that the water is evenly heated
•Collapsible Design: Collapsible pedicure foot spa feature offers a space-saving solution for easy storage in small spaces such as under the sofa, bed or any tight corner, making it a convenient and practical addition to any home

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$49.99

$59.99

-17%

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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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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

9.5

ChoiceComparer.com Score

9.5

/ 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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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

9.4

ChoiceComparer.com Score

9.4

/ 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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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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Xzionh

Xzionh 4kw 240v Hot Tub Heater Element for Balboa Spa Heater Element, Replacement Flo-Thru Universal Hot Tub Heating Element (4kw)

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Compatibility: 4kw 240v Hot Tub Heating Element For Balboa, Gecko, Spa Builders, Hydro Quip, Acc, Acura Spas, Len Gorden, Coleman, Watkins, Dimension One, Etc. Replaceable 12-0101-K, 12-0101f-K, 12-0102-K, 12-0102f-K, 12-58269-K, 12-58270-K, 12-58271-K, 12-58272-K, 12-58273-K , 12-58274-K, 2-00-5001
•High Quality Materials: Our Heating Elements Are Made Of High Quality Titanium And Have Corrosion Resistance And Extended Service Life.
•Replacement Of Elements: Hot Tub Heating Elements Used For Too Long Will Damage The Life Of The Hot Tub, Timely Replacement Of Hot Tub Elements Can Better Protect The Life Of The Hot Tub.
•Easy To Install: Simple In Construction And Easy To Install, Heater Housing Must Be A Flo-Thru Metal Tube
•After-Sales: If You Are Dissatisfied With Our Products Have Questions, Please Contact Us, We Will Solve Your Problem In Time

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$32.89

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Ornalry

Immersion Water Heater - 304 Stainless Steel Portable Water Heater Built in Auto Power Off,Thermostat,Hot-tub Heater Anti-Scalding,Temperature Controller Spa Bucket Heater for Home Camping Rv

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•1500W High-Power Bucket Heater: Efficiently heats water with a robust 1500W output, reaching your desired temperature in minutes for up to 5 gallons of water. Fast Heating for Outdoor, Home, Travel & Emergencies.Warning: Ensure the heater is fully submerged during operation. Exposing any part to air can cause a fire hazard.
•Safety Design: UL-certified and built with a rust-resistant stainless steel guard to prevent direct contact with heating elements, ensuring protection for both humans and animals. The intelligent temperature control automatically shuts off the heater when water reaches to the set temperature for added safety. Warning: Always immerse the heater fully in water before plugging it in to avoid fire hazards.
•Accurate Temperature Control & Auto Shut-Off with Alarm: This bathtub heater features advanced thermostatic control, automatically cycling on when the temperature drops by 9°F and shutting off once the desired temperature is reached. An alarm will sound to remind you when the water reaches your set temperature. The built-in auto shut-off ensures safe, energy-efficient operation, offering consistent and hassle-free heating without manual adjustments. Note: The Work Time no more than 2 Hours for safety
•Easy to Use: Simply immerse the electric submersible water heater at the proper water level and plug it into any grounded 110V AC outlet. The included digital thermometer makes it easy to monitor the water temperature. Check the power indicator light to confirm the heater is working. Note: Do not allow people or animals to be in the water while the heater is in use.
•Wide Range of Applications: Our portable pool heater is ideal for heating water in bathtubs, mini pools (use multiple heaters for larger volumes), sinks, buckets, and washbasins. It's lightweight and compact, making it perfect for travel and road trips. Note: Not suitable for large swimming pools.
•Versatile Heating Solutions: water heater electric ideal for a wide range of applications both indoor and outdoor, such as home emergencies, camping, RV trip, farm use, and daily portable use . Perfect for heating water in hot tubs, bath tubs, spas, mini inflatable pools, and more.
•WARNING: 1.Make sure the immersion heater is completely immersed in water before use! 2. Do not touch water during use to prevent electric shock! 3. Please do not use it continuously for more than 2 hours! 4. Do not plug two water heaters into the same socket to avoid fire hazards! 5.The power must be disconnected before removing the water heater!

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$34.99

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FATCANMA

FATCANMA Spa Hot Tub Heater Assembly with 4.0KW 240V Hot Tub Heater Element, fit for 15" x 2" Stainless Steels Flow-Thru Heater Housing B24055R Compatible with Sundance / B24055Q

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•COMPATIBILITY: The Spa pool heater Components is designed for use on jacuzzi, Sundance, Spa Builders and Pinnacle Spa Controls
•PRODUCT DIMENSION: The flow-thru spa heater stainless steel manifold size 2in x 15in. The split nuts unions diameter of 2in
•HIGH-QUALITY MATERIAL: The spa hot tub heater assembly with split nut unions & tailpieces is made of high-quality, suitable for use in humid environments and can work stably for a long time
•PACKAGE INCLUDES: The spa heater replacement package includes 1 X Stainless Steel Heater Housing, 1 X Heater Element with a power of 4KW and voltage of 240V, 2 X Heater Split Nut, 2 X Gaskets, 2 X Tailpiece, 4 X Screws
•EXCELLENT SERVICE: Please confirm the model and size before purchasing.If you have any questions about our designed for use with Sundance hot tub heater, whether it is pre-sales or after-sales, please feel free to contact us through Amazon support for greater assistance

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$120.00

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EcoSmart

Ecosmart Smart 11 Electric Spa Heater, White, 12 x 10.5 x 4.75

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Reliable, efficient, convenient, on demand heating.Voltage: 220.0volts
•Can replace your existing spa heater
•Save energy, save space, save water
•Digital thermostat control
•Activation flow 10gpm

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$499.55

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higgerllent

Pool Heater-15KW 220V Upgrade Thermostat Electric Swimming Pool Heater,Digital Touch Display Energy Efficient Pool Water Heater for Spas, Bathtubs and Above Ground in-Ground Pools. (220V 15KW)

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•This Is Not A Plug and Play Unit, You Will Need to Have an Electrician Install It According to The Circuit Instructions Before You Can Use It. Does Not Come With Extra Cables, Plugs, Circulation Pump. Purchase With Caution。Pool Heater Saves Energy, Protects the Environment and Is Suitable for Small to Medium Sized Pools and Spas.
•FAST HEATING: With a Powerful 15KW Heating Capacity, the Unit Quickly Raises the Temperature of the Pool Water, and the Pool Heater Cycles Around the Preset Temperature, Allowing You to Enjoy a Comfortable Swimming Experience Even in the Cooler Months.
•EASY TO OPERATE: The 15KW 220V Pool Heater Has A Mechanically Coordinated Thermostat Switch That Makes it Easy To Set and Maintain The Ideal Water Temperature. The Intelligent Control System Automatically Starts and Stops The Heater According To The Water Temperature, Saving Energy and Regulating The Water Temperature.
•VERSATILE USE: Whether You Are Heating An Above Ground Pool, Indoor Spa Or Jaacuzzi, This 15KW 220V Electric Swimming Pool Heater is Suitable for Pools With a Capacity of Up to Approximately 2000 Gallons.
•ANTI-DRY BURN: The Swimming Pool Heater is Equipped With A Pressure Switch That Protects It From the Danger Of Dry Burning. We Will Come With English Installation and Instruction Manual, if You Feel Confused You Can Hire a Licensed Electrician to Solve the Installation for Your Home. Please Follow the Instructions Strictly To Install The Wiring Before Installation

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$329.59

$350.10

-6%

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