The 12 best pool thermometers with heater integration of 2025

Fantastic Colorful Light Show: Imagine your pool giving off a mesmerizing light show as the sun goes down. This is Pircaath's unique digital pool thermometer, the only one that projects a light onto the bottom of your pool. It includes 7 dynamic and static light modes to choose from, projecting vivid diamond light patterns in your water. Pircaath light up pool thermometer extends the art of sunset into the night and makes your backyard look vibrant and alive.

Solar Pool Thermometer: The floating pool thermometer is powered by solar energy. It is fully charged in the sun during the day and auto turns on the light at night when the button is turned on. Never need to change a battery, we greatly reduce our dependence on traditional batteries and make a positive contribution to environmental protection. Meanwhile, the solar light show adds extra performance to it, adding more atmosphere to your water activities at night.

Integrated Seal Design: Our pool temperature thermometer is designed with the highest level of IP68 waterproof, and it's improved compared with previous version. The upgraded waterproofness and the double sealing ring design can 100% ensure that the internal parts of the thermometer will not be soaked by water. This can effectively extends the life of the pool thermometer, allowing the pool temperature gauge to accompany you through several summers.

Accurate and Easy to Read: The probe on this pool thermometer adopts a high precision sensor, which can reach up to 5 inches underwater to provide you with accurate water temperatures. It also features a large LCD display with a 35° tilt, which allows you to clearly see the reading on the thermometer without having to bend over. If you want an accurate and easy to read digital thermometer, Pircaath floating hot tub thermometer must be the best choice.

User-friendly: This pool temperature gauge can be switched between Celsius and Fahrenheit. The temperature measurement range is -4℉ to 158℉, which is perfect whether you use it in a hot tub, spa or ice bath. It can record the highest and lowest temperatures of the day, allowing you to closely track changes in water temperature. Pircaath pool thermometers are protected by patent No. US D1027680 S/EU 015048299-0001/CN ZL202420149256.8

Solar-Powered and Environment-Friendly: The WEBEST swimming pool thermometer floating easy read is equipped with a solar battery that charges under sunlight, making it an energy-efficient and environmentally friendly choice for monitoring your pool's temperature.

IPX-8 Waterproof Design: With its IPX-8 waterproof rating, WEBEST floating pool thermometer is built to withstand water immersion, ensuring accurate temperature readings even when submerged in the pool.

Easy Reading LCD Screen: The large, easy-to-read LCD screen provides clear and precise temperature measurements in both Celsius and Fahrenheit, allowing you to monitor your pool temperature with ease by WEBEST digital pool thermometer floating.

More Accurate Measurement: The WEBEST swimming pool temperature gauge offers a measuring range of -20°C to +50°C (-4°F to 122°F) with an accuracy of +/-1°C (2°F) between 0°C to 50°C, and +/-2°C (4°F) outside of that range. This ensures you get accurate readings every time.

Durable Construction with String: Made from high-quality materials, WEBEST pool temperature thermometer is built to last. It features a durable construction that can withstand the elements and comes with a string for easy retrieval and secure attachment.

Tube thermometer

High-quality pool and spa thermometers help deliver accurate temperature readings for greater enjoyment of recreational water

Pool thermometers also provide crucial information about the performance of pool heating systems

Comes with ABS case and 3-feet cord

Measures 8-1/4-inch length by 9-3/4-inch height by 8-1/4-inch width

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.

Solar Energy, Never Powered Off: BaldrTherm wireless pool thermometer is equipped with solar cells. In bright environments, solar panels can provide permanent energy, whether it's light or sunlight.

Dual Screen Display & More Accurate and Sensitive: This swimming pool thermometer features dual screen display and angled design, allowing you to quickly read data whether you are by the pool or in the water. The solar pool thermometer uses high-precision sensors to ensure more accurate and reliable data (Accuracy: ±1°F/°C). And the thermometer automatically updates data every 5 seconds, keep you updated on the temperature changes in the swimming pool at all times.

No Fogging: The digital swimming pool thermometer is a fully sealed structure, using waterproof rings and ultrasonic technology, with a double-layer waterproof structure. Water vapor is difficult to enter the interior of the product, so it can be used with confidence even in warm water.

IP68 Waterproof & Dual-Temperature Display: BaldrTherm floating pool thermometer adopts a waterproof shell, Even when the product is immersed in water, it can ensure accurate readings without affecting normal use. It can easily switch between Celsius and Fahrenheit, making it very suitable for users around the world.

Applicable Scenarios: The BaldrTherm floating wireless pool thermometer has a compact and exquisite appearance, making it perfect for use in swimming pools, hot tubs, aquariums, baby showers, spas, koi pools, and other places where liquid temperature needs to be measured.

Cute Design: Adorable Dolphin shape designs - that will add a touch of whimsy to your pool or spa.

Keep your pool or spa at the perfect temperature with our easy-to-read thermometer. Temperature reading range：20 to 120 °F / -10 to 50 °C.

Large size and clear display make it easy to read from a distance. The pool thermometer liquid ingredients: Water 90.1%; Liquid Nitrogen 9.9%.

Includes a rope tether to keep the thermometer from floating away.

Suitable for use in a variety of water sources, including swimming pools, hot tubs, baby pools, fish ponds, spas, large aquariums, and more.

🏊Includes rope tether to keep the thermometer from floating away.

🏊The pool thermometer liquid ingredients: Glycerol 100%.

🏊Temperature reading range：20 to 120 °F / -10 to 50 °C.

🏊Suitable for Paddling Pools, Swimming Pools, Hot tubs, Baby Pool, Fish ponds, Spas and Large Aquariums, etc.

No more guesswork with accurate temperature readings.

Solar Pool Thermometer: Pircaath solar pool thermometer is our new version. The pool Thermometer is built with a highly efficient solar panel that absorbs the sun during the day to recharge the batteries and monitors the temperature of your pool anytime, making it an energy-efficient and environmentally friendly choice. And there is no need for battery replacement, saving you time and money. At night, the solar pool thermometer will light up the pool and create a very nice atmosphere.

Pool Thermometer with Light Show: Pircaath pool thermometer is the unique on the market where vibrant light patterns can be projected onto the bottom of the pool! The floating pool thermometer has 7 different light shows, including dynamic and static. It not only provides you with accurate temperatures, but the lights itself displays are a beautiful addition! Just like having your own little light show when the sun goes down and adds to your nighttime pool decor.

Easy to Read: The spa thermometer's oversized LCD screen is tilted to make it more clear and easy to read even under strong sunlight. It switches between Celsius and Fahrenheit. Whether you want to ice bath in winter or have a pool party in summer, our thermometer provides accurate temperatures. (Measurement range: -20℃ to 70℃/ -4℉ to 158℉). This digital pool thermometer records the day's max and min temp, allowing you to keep track of water temperature changes.

IP68 Waterproof and Floating Design: Pircaath floating pool thermometer has an IP68 waterproof rating, and double seal ring protection, thus ensuring that the battery is completely sealed inside. 100% waterproof and weather-resistant. The floating design make sure that the pool thermometer always stays upright in the water. Besides, we design a tether loop. You can fix it with a string to prevent it from floating into skimmers or other cleaning products.

Perfect for Various Water Environments: The pool temperature thermometer is made of quality and thick materials. Whether it's in a hot tub, spa, pool, or pond, Pircaath pool temperature gauge is always your ideal choice. Monitor the temperature of your water and enjoy a comfortable and relaxing swimming experience. Our products are protected by patent No. US D1027680 S/EU 015048299-0001/CN ZL202420149256.8

🔆【Solar Powered】 BALDR pool thermometer uses upgraded solar panels and larger capacity batteries, the charging efficiency and range has been greatly improved, which means you no longer need to replace the battery, even if it is left outdoors for a long time, you do not need to maintain it, whether it is rainy or cloudy days.

💹【Environmental & Energy Saving】 The pool thermometer floating utilizes advanced solar technology and consumes only ⅓ of the energy compared to traditional dry cell pool thermometers. By utilizing solar energy, we greatly reduce our dependence on traditional batteries and make a positive contribution to environmental protection.

♨【Faster & Accurate】Tis digital pool thermometer is equipped with a sensitive metal probe imported from Sweden, it only takes 10 seconds to get the data easily and refreshes the most accurate water temperature of the moment for you every 10 seconds, with an accuracy error of ±1.8℉. Temperature range: -4℉-122℉, suitable for ice bath tubs, cold plunge, hot tubs and hot springs.

💦【IPX8 Waterproof】BALDR pool temperature thermometer is sealed with ours unique ultrasonic welding technology. Even in the rain or submerged in water, the thermometer remains waterproof, ensuring a longer battery life.

👓【Prevent Fogging】We innovatively added desiccant inside the pool thermometer to ensure that the inside of the device stays dry and rust-free. This not only provides waterproof double protection, but also prevents the screen from fogging.

🌡【Convenient and Easy to Read】Large digital display allows you to read the water temperature value at a glance, no need to bend over or take the thermometer out of the water.

👒【High Quality and Safe Material】The pool thermometer wireless is made of high quality shatterproof material, high temperature resistant, UV ultraviolet resistant, no deformation, no color fading, you don't need to worry that this pool thermometer will be harmful to the pool and human body.Therefore, it can also be used as a bath thermometer.

💬【Customer Service】We are committed to maintaining a good shopping experience for every customer, based on confidence in product quality, we provide 3 years warranty. 99% of after-sales problems will be solved within 24 hours (by phone or e-mail), to ensure that you worry-free shopping, please rest assured that you use our products.

Precise Temperature Monitoring: Take the guesswork out of pool care with advanced floating thermometer. It delivers accurate, real-time water temperature readings, ensuring a safe and comfortable swimming experience.

Energy-Efficient Design: Operating on battery power (batteries not included), pool thermometer floating is energy-efficient, helping you keep operational costs low without sacrificing performance.

Durable Waterproof Construction: Engineered to withstand harsh pool environments, the IPX8-rated waterproof design offers exceptional durability and reliability in all weather conditions.

Indoor Temperature Display: Check the temperature from the comfort of your home. The large, user-friendly display allows you to easily monitor your pool’s temperature without stepping outside, even during cold or rainy days.

Eco-Friendly Pool Management: Keep your pool in top shape while being environmentally conscious with eco-friendly approach to temperature monitoring. It's a smart choice for sustainable pool care.

Upgraded Waterproof Ability: The pool thermometer has better sealing and a Screw-on battery cover; Please tighten it as much as you can after installing the batteries

Upgraded Durable Materials: The floating thermometer is more UV resistant and high-temperature tolerance , ideal for outdoor swimming pools and hot tub

Probe More Resistant: The wireless pool thermometer is upgraded to be more resistant to chemicals in the water; You could even put it in an aquarium without worries

Max 300 feet Wireless Range: The floating thermometer syncs the pool temperature or hot tub to the indoor thermometer so that you can check the water temperature in another room

Optional Upgraded to WiFi: Compatible with INKBIRD gateway IBS-M1 and IBS-M2 (SALE SEPARATELY), to get temperature readings without distance limit

Fahrenheit or Celsius Switchable: Let the device get used to your habits

NOTE: Battery not included

🐊🦀Double the Fun: Each set includes two adorable designs - a crocodile and a crab - that will add a touch of whimsy to your pool or spa.

🐊🦀Keep your pool or spa at the perfect temperature with our easy-to-read thermometer. Temperature reading range：20 to 120 °F / -10 to 50 °C.

🐊🦀Large size and clear display make it easy to read from a distance. The pool thermometer liquid ingredients: Water 90.1%; Liquid Nitrogen 9.9%.

🐊🦀Includes a rope tether to keep the thermometer from floating away.

🐊🦀Suitable for use in a variety of water sources, including swimming pools, hot tubs, baby pools, fish ponds, spas, large aquariums, and more.