The 7 best pool thermometer replacements of 2025

Lid replacement

Fits Pentair SwimQuip, Swimrite, Jacuzzi, Hayward Pool and spa skimmers

Includes thermometers

Available in white color

Measures 9-7/8-inch

Well Replacement

Fits Pentair Pool And Solar Inline Thermometers

Made Of Nylon

Brand: Pentair

✔Measures pool and spa water temperature and provide accurate reading

✔Large temperature reading display, in Fahrenheit and Celsius. Reads Up to 120 Fahrenheit and 50 Celsius

✔Premium quality, Built from Durable Material & Shatter Resistant

✔For All Outdoor & Indoor Swimming Pools, Spas, Hot Tubs, Aquariums & Fish Ponds

🏊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.

🐢🦩Double the Fun: Each set includes two adorable designs - a flamingo and a turtle - 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%; Kerosene 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: Water 90.1%; Kerosene 9.9%.

🐡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.

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.