The 12 best heaters for inflatable hot tubs of 2025

220V, 3KW, 1.5" outlet, minimum working pressure of 0.35MPA. A minimum of 0.25HP/200W (1500GPH) pump is recommended to ensure the hot tub heater will work properly. Products are suitable for small 340 gallon tubs and spas/hot tubs up to 600 gallons.

The water spa heater thermostat stabilizes the water temperature between 0-45ºC (32ºF~113ºF). The thermostat will automatically turn on or off depending on the temperature you set. If the temperature exceeds 60ºC/139ºF, the heater will stop working and the reset button will pop up and cut off the power.

Please put hot water instead of cold water into the hot tub pump and heater, the heating time will vary depending on the environment and water temperature. Since the tub heater is equipped with a flow switch, the tub heater will only operate when the pump is running.

Easy to install, you will get 1*220V/3KW hot tub heater and 2PCS pipe connector (pipe is not included, you need to prepare 1.5 inch hose extra), please install the hot tub heater horizontally and make sure the installation direction is correct, the water flow direction should be the same as the arrow direction on the heater.

Good after-sales service: We have 1 years warranty, if you have any problems with hot tub heater, you canapply for a refund or free replacement. We focus on Customer service and have professional technical teams and we havegood after-sales service! For whatever reason, you are not satisfied. Just write to us through "Order History"-"Contact Seller",and we promise to respond within 12 hours.

<p>☀[Heat water faster]: 1500W high-power immersion water heater can make 5 gallons of water warm in a few minutes. In the cold winter, you no longer need to wait for a long time for warm water. When you get an immersion water heater, you can enjoy hot water anytime and anywhere in just a few minutes even for outdoor camping with this portable immersion heater for camping .

<p>❀[Safety protection] This UL Certified immersed electric water heater with 304 stainless steel cover guard. Heating in water for a long time will not cause rust, and also protect the heating from direct contact with people, effectively preventing burns. It comes with the digital LCD thermometer whcih can show the temperature easily and can enjoy with the comfortable warm water .Let us enjoy swimming with this portable pool heater

♥ [Easy to use] Just put the full submersible water heater bucket heater into the water and connect it to power supply without much fuss.. Please note that the heater must be completely immersed in water during use. Through water temperature measurement, you can base on temperature. Note: It is recommended that the continuous use of the tap water heater should not exceed 3 hours.If heat the outdoor swimming pool please kindly check the pool size if any question please feel free to contact us

♛[Portable and versatile]: You can use the portable bucket water heater anywhere. It supports to use in containers of different sizes, such as buckets, basins, bathtubs, mini inflatable portable swimming pools, etc. Please note if using in outdoor Inflatable swimming pool one should not be enough .This is the first choice for home and outdoor work.This immersion heater is handy and super lightweight, making it pool warmer any grounded wall outlet.

Do not heat while using water . 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 .Don’t put your hand into the liquid when the electric water heater is plugged in.When the liquid is hot, unplug the immersion heater element then take out from the container.Do not plug two heaters on the same outlet .

[Caution:]Kindly check the socket condition before plug with the immersion water heater .

Product Material：Waterproof hot tub pump cover is made of 170G top polyethylene material with waterproof zipper,Five-layer thermal insulation can reflect heat,lock heat,resist UV,Engery-saving and Eco-friendly,saving your electricity bill all year round.

Powerful Functions：Inflatable hot tub heater pump cover can protect your heater pump from Dirt, Hot Sun,Dust, Snowstorm,Rainstorm,High Wind,Hail, Bird Droppings etc.

Product Size：Insulated cover is 16.9"D x 14.9"W x 21.2"H.Suitable for multiple brands spa heating pump,please measure the size of your heater pump before purchasing,only include the cover.

Clear PVC Window: Transparent PVC top window allows you to monitor pump settings without removing the cover, providing easy access while keeping the pump protected.

Wind Belt Design：Simple to install with 2 pcs adjustable wind straps for a secure fit.Easily removable for maintenance and compact storage, making it hassle-free for every use.

【Hot Tub Insulated Pump Cover】:This inflatable hot tub pump cover will keep off snow, dust, and rain from ruining your hot tub spa heater pump.

【Outside Units Hot Tub Pump Enclosure】:Size is 16.9"D x 14.96"W x 21.2"H.Suitable for most Inflatable hot tub spa heater pump on market.Please note that:Cover only.

【Waterproof Anti-UV】: Made of water resistant 600D oxford and plush fabric for maximum resistance against rain, sun, snow,and outside elements.Extend the service life of the hot tub spa heater pump.

【Upgrade Design】:Our inflatable Hot Tub pump cover is designed with Zipper and Velcro opening, which lets you do not need to remove the hoses for installationand no need to remove the cover when using,simple and convenient.Equipped with 2 elastic force buckle straps to securely tie up the sand filter pump, and prevent it from being blown up by the wind.

【Good Shopping Experience】: If you have any questions about quality and instructions during use, we will be happy to assist you.Warrantied for 1-year . We want our customers to be 100% happy.

【Exclusive Design】The hot tub spa heater pump cover adopts top transparent PVC window and zipper opening design, which can easily operate without unzip. Better protect your heater pump well when spa, make your spa treatment comfortable.

【High Quality Material】Our spa pump cover is made of 600D oxford heavy-duty fabric with PVC coating at back, more durable and heavier than other 210D flimsy material. Maximum resistance against rain, sun and outside elements. Extend the service life of the hot tub spa heater pump.

【Optimized Size】We refer to the hot tub heater cover on the market, in order to make the cover fit the heater pump better we optimize the size, and for easy to install and remove,our cover is designed to be little larger than the spa heating pump. our spa heater pump cover size is 16.5''W*15''D*18''H. Kind Tips: please measure your hot tub heater pump size before order.

【Easy to Install】Our inflatable hot tub pump cover is designed with Zipper and Velcro opening, which lets you do not need to remove the hoses for installation and no need to remove the cover when using, simple and convenient.

【Comprehensive Protection】2 adjustable elastic drawstring at the bottom, 1 buckle on the side of the cover, 1 inch top extend edge and 2 velcros in the front of the heat pump cover make the cover can cover well your spa heater pump unit. All-Weather protection keeps your spa heater pump clean, dry, and looking like new.

316 Food-Grade Stainless Steel Water Heater: Compared with other 304 water heaters, our 316 stainless steel fully submersible water heater is made of corrosion-resistant 316 material, ensuring longer durability. Especially during long-term use, this fully submersible heater provides excellent continuous heating performance. It can operate quietly even for a long time, making it an ideal choice for swimming pool heaters and ensuring long-term use without malfunctions.

Fast Heating for Instant Hot Water: Equipped with powerful heating capacity and Temperature Control, our 1300W heater significantly outperforms other 1000W models. This means faster and more efficient water heating, saving you time and money, particularly during cold winters and daily use. It enhances the comfort and quality of life for your family.

GFCI Leakage Protection: With built-in GFCI leakage and overload protection, our 316 Stainless Steel Portable Portable Fully Submersible Water Heater reduces the risk of electrical leaks and fires, greatly improving safety for you and your family. The rubber-insulated cable offers superior water insulation compared to others, with an added layer of protection to prevent accidents.

Precise Temperature Control: The Temperature Control panel is user-friendly and equipped with a corrosion-resistant, highly sensitive temperature sensor. Submerged in liquid, the thermostat Portable heater can precisely maintain the temperature within ±0.1°C, Long press SET for more than 3 seconds when the LED display blinks set your desired temperature, press the up and down buttons to increase or decrease the temperature, regular state press SET can be freely switched Fahrenheit degrees Celsius unit switching.

Versatile Applications: The Portable 316 Stainless Steel Portable Fully Submersible Water Heater is effective in any liquid environment, making it suitable for swimming pools, bathtubs, baptistries, buckets, hot tubs, aquariums, kitchen sinks, tanks, and livestock water troughs.

316 Food-Grade Stainless Steel Water Heater: Compared with other 304 water heaters, our 316 stainless steel fully submersible water heater is made of corrosion-resistant 316 material, ensuring longer durability. Especially during long-term use, this fully submersible heater provides excellent continuous heating performance. It can operate quietly even for a long time, making it an ideal choice for swimming pool heaters and ensuring long-term use without malfunctions.

Fast Heating for Instant Hot Water: Equipped with powerful heating capacity and Temperature Control, our 1800W heater significantly outperforms other 1300W models. This means faster and more efficient water heating, saving you time and money, particularly during cold winters and daily use. It enhances the comfort and quality of life for your family.

GFCI Leakage Protection: With built-in GFCI leakage and overload protection, our 316 Stainless Steel Portable Portable Fully Submersible Water Heater reduces the risk of electrical leaks and fires, greatly improving safety for you and your family. The rubber-insulated cable offers superior water insulation compared to others, with an added layer of protection to prevent accidents.

Precise Temperature Control: The Temperature Control panel is user-friendly and equipped with a corrosion-resistant, highly sensitive temperature sensor. Submerged in liquid, the thermostat Portable heater can precisely maintain the temperature within ±0.1°C, Long press SET for more than 3 seconds when the LED display blinks set your desired temperature, press the up and down buttons to increase or decrease the temperature, regular state press SET can be freely switched Fahrenheit degrees Celsius unit switching.

Versatile Applications: The Portable 316 Stainless Steel Portable Fully Submersible Water Heater is effective in any liquid environment, making it suitable for swimming pools, bathtubs, baptistries, buckets, hot tubs, aquariums, kitchen sinks, tanks, and livestock water troughs.

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.

【Precise Temperature Control】 You will experience safe and green heating with the advanced PTC heating system. The 1350W heater pump offers adjustable temperature settings from 68-104℉ and features a thermostatic design for prolonged massage sessions.

【Relaxing Bubble Massage】This SPA pump supports bubble massage function with 20-minute auto shutoff. The SPA pump releases a gentle stream of bubbles to alleviate stress and promote relaxation. Please note that the bubble and heating functions cannot be used simultaneously.

【Efficient Filtration Performance】The powerful SPA heater ensures effective water filtration for a clean and healthy experience. The circulating filtration system includes an auto reminder for filter replacement after 168 hours of filtration, maintaining optimal water quality.

【Easy to Operate】 Adjust settings with the touch panel and LED display, you could conveniently personalize your SPA experience. The control center offers additional safety measures such as freeze protection and a child lock feature for enhanced security.

【Advanced Safety Features】Designed for maximum protection, the heater pump features multiple safety designs including IPX5 waterproof rating, overheat protection, overload protection, and a GFCI plug. Note: The Heater Pump is not suitable for inflatable hot tubs of other brands.

Requires a 20A circuit(Connect 20A adapter or breaker),with 1.5" outlet , min 0.35MPA pressure,suggest work with at least 0.25HP,suitable small bathtub & spa tub /hot tub 2 KW /110V-120V.No plug, just 3 cables,Black Cable is Live,White Cable is Neutral,Green Cable is Grounded.

We suggest water capacity not more than 400 US gallon,the heater won't work if it exceeds the standard, see the picture 2.

We suggest the pump not less than 200 wat (3600 L/ h), small pump will cause the heater cannot work,see the picture 3.

Make sure the mount direction is correct,arrow direction is the water flow direction,wrong direction will not make the heater work. see the picture 4.

A quick method for detecting heating pipe damage,see the picture 5.

When the heater doesn't work,use a multimeter to test the 4 points to determine which component is damaged,see the picture 6.

If have any issues with heater,please take some photo of the using environment,including installation direction,set temperature,pump and water capacity,we will help you troubleshoot.

🫧【Optimal Heating System】 Enjoy the comfort of safe and energy-saving warmth with an advanced PTC heating mechanism. The 1350W heater pump allows for an adjustable temperature of 68-104℉ and has a thermostatic design for a long-time massage.

♨️【Enhanced Bubble Feature】 Immerse yourself in a cascade of calming bubbles. The 20-minute auto shutoff bubble mode of the SPA pump injects a stream of air to produce a gentle massage that will melt away your stress. The bubble function and heating function cannot be used at the same time.

🫧【Premium Filtration System】 The SPA heater is powerful to achieve efficient filtering and maintain crystal-clear water. In addition, it comes with an auto filter replacement reminder after 168 hours of filtration.

♨️【Stress-Free Operation】 Thanks to the touch panel with an LED display, you can easily adjust settings to create your perfect SPA session. Moreover, the control center offers frozen protection, auto or manual child lock, ensuring higher security.

🫧【More Safety Features】 Designed for perfect protection, the multifunctional heater pump boasts multiple safety designs, including IPX5, overheat protection, overload protection, GFCI plug, and more. Note: The heater pump is not suitable for other brands of inflatable hot tubs.

Note: The Heater Pump is not suitable for other brands of inflatable hot tubs.

POWERFUL 2000W HEATING: Powerful Pool heater is designed to deliver efficient fast heating for inflatable and above ground pools, allowing you to enjoy warm water in minutes. Swimming pool heater quickly heats up water to desired temperature.

TEMPERATURE CONTROL: bucket heater equipped with thermometer allows to monitor precision water temperature. Protable water heater will auto-off when reaches 158℉(70℃) temperature.

VERSATILE IMMERSION HEATER: Immersion water heater portable and submersible design makes it easy to use and convenient in various containers, submersible heater perfect for heating water in bathtubs, plastic and wood bucket, basin inflatable pool.

STURDY AND SAFE: UL Certified Pool heater for inflatable pool features US plug,and 304 stainless guard that ensures sturdy and protection against rust or corrosion, heater for pool is safe and reliable, last through repeated use.

FAST HEATING FOR LARGE VOLUMES: With its high power and efficient heating capability, electric hot water heater can heat up to 5-20 gallons of water in minutes. Please note that camping heater must be completely immersed in water during use.