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The Pentair Thermistor Defrost Sensor Probe 473665 is a genuine OEM replacement for ThermalFlo Titanium and UltraTemp heat pumps. At 53.5 inches long, this sensor is a vital component in regulating the defrost cycle by monitoring temperature and preventing frost accumulation. By supporting efficient defrosting, it helps the system maintain heating performance while protecting equipment from strain. Constructed with OEM-grade materials, the probe delivers long-term reliability and compatibility. Designed to Pentair’s specifications, it installs easily and restores safe, efficient operation of your heat pump system.
Highlights
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System Compatibility: Works with Pentair UltraTemp and ThermalFlo Titanium heat pumps, offering seamless OEM integration and dependable function.
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Defrost Cycle Regulation: Monitors temperature conditions to control the defrost process, keeping heating performance consistent in varying climates.
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Prevents Efficiency Loss: Reduces frost buildup that can compromise heat pump output, ensuring the system remains efficient and reliable.
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Extended Probe Length: Measures 53.5 inches, providing the necessary reach for accurate placement and effective performance.
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OEM Quality Build: Manufactured with high-grade materials to Pentair’s standards for durable, long-lasting operation.
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Supports System Reliability: Helps reduce wear on the heat pump by preventing frost-related strain, extending equipment life.
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Authentic OEM Replacement: Designed as a genuine Pentair part, guaranteeing proper fit and reliable operation within compatible heating systems.
Includes
- (1) Pentair 473665 Defrost Probe
Compatibility
- Pentair UltraTemp Heat Pumps
- Pentair ThermalFlo Heat Pump Titanium
Additional Info
Searching for the OEM Pentair Thermistor Defrost Sensor Probe 473665? This section covers installation, troubleshooting, and maintenance tips for UltraTemp and ThermalFlo Titanium heat pumps, with a focus on local stock and pricing.
Installing the Pentair 473665 Defrost Probe
At 53.5 inches, the probe installs easily within Pentair heat pumps. Proper placement ensures reliable temperature monitoring for the defrost cycle.
How do I connect the Pentair 473665 probe to my ThermalFlo system?
Can I check local price and shop stock before buying the 473665 probe?
Does the 473665 work with all UltraTemp heat pump models?
Is this sensor probe supplied with wiring connectors in local stock?
Solving Defrost Performance Problems
When sensors fail, frost can accumulate and reduce efficiency. The 473665 ensures reliable temperature sensing to maintain smooth operation.
Why is my UltraTemp heat pump freezing up during cold weather?
Can replacing the 473665 fix repeated defrost failures?
How do I test the thermistor probe for accuracy before replacement?
Do local pool shops offer diagnostics for Pentair defrost sensors?
Local Stock and Pricing Options
Wholesale Pool Mart provides competitive local pricing and nearby availability for the 473665 probe, making it easy to replace faulty sensors quickly.
Where can I buy the Pentair 473665 defrost sensor near me?
Does Wholesale Pool Mart list the lowest local price for the 473665?
How can I confirm stock availability before heading over?
Are multiple 473665 probes available for contractors at local shops?
Diagram

Questions & Answers
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