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Laars Heating Systems E2074501 SPST Pressure Switch 0.3" WC

Special Price $63.83 Regular Price $73.40
In stock
SKU
E2074501
The Laars Heating Systems E2074501 SPST Pressure Switch is an essential part of the HVAC system that provides safe and effective operation. The airflow and system pressure are monitored by this single-pole single-throw switch which activates at 0.3" water column. It is commonly used in boilers, furnaces and water heaters to stop the system from operating when pressure levels are outside the acceptable range. A reliable performance ensures system safety and prevents overheating as well as prolongs equipment life. This switch maintains proper pressure levels optimizing energy efficiency and providing consistent heating performance making it an essential part of high-quality HVAC system equipment.
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Specifications

  • Type: Pressure Switch
  • Switch Type: SPST
  • Pressure: 0.3" Water Column
Manufacturer Name: Laars Heating Systems
Product Number: E2074501
OEM Part Number: E2074501
Product Description: .3"Wc Spst Pressure Switch
Weight:0.15lbs/68.04g

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Customer Questions
What maintenance is required for the Laars Heating Systems E2074501 Pressure Switch?

Inspect pressure sensing ports regularly for dust, debris, or moisture buildup that can affect sensitivity. Ensure tubing connections remain secure and free of cracks or leaks. Clean gently using dry air and avoid damaging the diaphragm. Proper maintenance ensures accurate pressure detection and better system operation.

What are common issues with the Laars Heating Systems E2074501 Pressure Switch?

  • Failure to activate due to clogged pressure ports or blocked tubing.
  • Inconsistent switching caused by weak or damaged diaphragm.
  • Electrical contact failure leading to intermittent system operation.
  • False triggering from improper pressure calibration or air leaks.

Installation Steps

Step 1: Turn off power and gas supply to system.

Step 2: Remove old pressure switch and note tubing and wiring positions.

Step 3: Mount new switch at original bracket location.

Step 4: Connect pressure tube to inlet port without kinks.

Step 5: Wire terminals according to diagram.

Step 6: Tighten fittings and check mounting stability.

Step 7: Restore power and test cut-in and cut-out operation.