12 best flow sensors for pool heaters of 2025

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The 12 best flow sensors for pool heaters of 2025

Updated: May, 08 2025

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In this September 2025 review, we explore the 12 best flow sensors for pool heaters options available. Our expert analysis, led by Antonio Smitham, ensures you find the perfect fit.

009577F Pool Temperature Sensor Lid Units Replacement for Heater Spa, Compatible with Heater 206A, 207A, 266A, 267A, 336A, 337A, 406A, 407A, 3 Wire NTC 100K

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best flow sensors for pool heaters

009577F Pool Temperature Sensor Lid Units Replacement for Heater Spa, Compatible with Heater 206A, 207A, 266A, 267A, 336A, 337A, 406A, 407A, 3 Wire NTC 100K

4.1

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Funmit 42002-0024S Stack Flue Sensor Replacement for Pentair Sta-Rite MasterTemp Max-E-Therm Pool and Spa Heater Electrical System SR200 SR333 SR400

4.5

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Water Heaters Flow Sensors Flow Switch Accessories Flow Rate Turbine Flow Meter Direct Replaces Easy Installation Hall Effect

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IDXLFLS1930 Flame Sensor Replacement fit for Hayward Pool Heater Parts, Pool Heater Ignitor Compatible with Hayward Universal H-Series Induced Draft and Gas Heater H250IDL H300IDL H400IDL H150FD

4.1

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Funmit 42002-0024S Stack Flue Sensor Replacement for Pentair Spa Heater Elecrical System and Sta-Rite MasterTemp Max-E-Therm Pool

4.6

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RAMATA 42001-0061s Air Flow Switch Pressure Switch Electrical System AFS Replacement for Pentair Mastertemp and Sta Rite Max E Therm Pool Spa Heater, Also Replaced Old OE # 42001-0059s

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Pentair 42001-0061S Electrical System Air Flow Switch Replacement Pool and Spa Heater

4.4

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Hayward Flow Switch, GLX-FLO-RP for Hayward Goldline Aquarite Salt System Pool Flow Sensor Suitable Hayward Salt Cell and Chlorine Generator with 15ft Cable Pool Flow Switch

4.6

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GLX-FLO-RP Flow Switch Assembly, Pool Flow Sensor Compatible with Goldline and Aquarite Salt Systems Pool Flow Switch with 15 ft. Cable

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DELEYAPARS Flow Switch Assembly GLX-FLO-RP for Hayward/Goldline Aquarite Salt Systems, Pool Flow Sensor Suitable for Hayward Salt Cell and Salt Chlorine Generator System

3.9

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Upgraded R0456500 Temperature Sensor, for Zodiac Jandy Legacy LRZE / LRZM / JXI / LXI 125 175 200 250 260 300 325 400 Pool / Spa Heaters, Replace R0456600 R0523900 R0477300 6204-209 Thermistor Sensor

4.6

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Pool Heater Temperature Sensor 009577F Compatible with Raypak Heaters 206A, 207A, 266A, 267A, 336A, 337A, 406A, 407A, 3 Wire NTC 100K Replacement for Raypak Temperature Sensor Lid Units

4.6

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Antonio Smitham

contributing writer

I'm passionate about making the world a better place. With over a decade of experience working in a number of industries, I've been fortunate enough to meet people who care about the world, and whose actions make a difference. Whether it's volunteering with organizations that create environmental changes, or working with companies that are committed to making ethical decisions, I'm motivated to be a part of the change. Contributing Writer.