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Lennox 14A45 Dual Pressure Switch 0.50/0.90" WC

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5 5 4
4  Reviews Add Your Review
Special Price $62.63 Regular Price $72.03
In stock
SKU
14A45

The Lennox 14A45 is a critical dual-pressure switch that ensures your HVAC system runs smoothly and safely. It monitors the air pressure inside your furnace or air handler, acting as a vigilant watchdog. The mechanism is signaled to start operating when the pressure drops below the predetermined 0.50" WC threshold. It initiates a switch-off when it reaches the greater 0.90" WC limit, averting possible harm from high pressure. This two-phase process maximizes efficiency and comfort. This dependable part is used in a variety of Lennox gas furnaces and air handlers, protecting them against damaging pressure changes. The 14A45 helps to prolong equipment life, enhance system efficiency, and ultimately, provide you with tranquility of thoughts by maintaining ideal pressure levels.

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HVAC Controls & Electrical, Switches, Pressure Switches
Manufacturer:
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Manufacturer Name: Lennox
Product Number: 14A45
OEM Part Number: 14A45
Product Description:  The 14A45 Lennox Pressure Switch is a vital component for maintaining optimal HVAC system performance. Designed with precision and reliability in mind, this .50/.90 pressure switch ensures your heating and cooling systems operate at their best. Weighing just 0.6lbs (272.16g), this pressure switch is lightweight yet robust. Its compact design makes installation a breeze, saving you time and effort during maintenance or replacement.

Key Features:

  • Precision-engineered for HVAC efficiency.
  • Reliable performance for heating and cooling systems.
  • Compact and lightweight for easy installation.
  • Ensures optimal system functionality.
  • Durable construction for long-lasting use.
  • Trustworthy Lennox quality.

Weight:0.6lbs/272.16g

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Product Questions (5)
Customer Questions
What is the purpose of a pressure switch in HVAC systems?

A pressure switch in HVAC systems ensures safety by monitoring and controlling pressure levels, preventing system damage.

Is the 14A45 Lennox Pressure Switch compatible with other HVAC brands?

No, this switch is specifically designed for Lennox systems to ensure seamless integration and reliable performance.

What is the pressure range (.50/.90) and why is it important?

The range indicates the switch's activation thresholds, crucial for maintaining the desired pressure levels in HVAC systems.

 

What maintenance is required for the Lennox 14A45 Dual Pressure Switch?

Regularly inspect the pressure switch for dust, debris, or corrosion. Ensure tubing connections are secure and free of leaks. Proper maintenance prevents inaccurate pressure readings and ensures safe system operation. Handle carefully to avoid bending or damaging components.

What are common issues with the Lennox 14A45 Dual Pressure Switch?

  • Incorrect pressure readings.
  • Leaks at tubing or connection points.
  • Switch sticking or failing to reset.
  • Intermittent or inconsistent system responses.

Installation Steps

Step1: Turn off the HVAC system and disconnect power to prevent electrical shock.

Step2: Locate the existing pressure switch on the furnace or air handler and remove it carefully.

Step3: Disconnect the tubing and wiring from the old switch.

Step4: Connect the new dual pressure switch, attaching tubing and wiring securely.

Step5: Ensure tubing is free of kinks and connections are tight.

Step6: Restore power and test system operation to verify proper pressure response.

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