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OEM Payne Pressure Switch PAY-PS-1820 for Model PA12NA018000AAAA
Payne

OEM Payne Pressure Switch PAY-PS-1820 for Model PA12NA018000AAAA

SKU: payne-pressure-switch-pa12na018000aaaa Brand: Payne
$48.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Payne Pressure Switch PAY-PS-1820 for Model PA12NA018000AAAA

This OEM Payne pressure switch (PAY-PS-1820) is a key safety control on your PA12NA018000AAAA air conditioner, watching refrigerant pressure and cutting power before damaging high or low pressure conditions can reach the compressor. When it fails, you may notice short-cycling, a no-start condition, or recurring pressure-fault lockouts. This factory-matched replacement uses the precise trip and reset points your model calls for, delivering accurate protection and steady performance. Installation is quick: disconnect power, isolate refrigerant per code if required, unthread the old switch, and connect the new one with its quick-connect terminals — a 20 to 30 minute task for most technicians. Installing the correct OEM switch eliminates nuisance trips and protects your most expensive component from costly failure. Genuine Payne construction holds its cut-out calibration reliably year after year. In stock and ready — orders placed before 3PM CST ship the same day so your system gets back to safe, dependable cooling fast. Don't risk your compressor on an out-of-spec generic part.

Compatibility

This part is compatible with Payne model PA12NA018000AAAA.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $75
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Pressure Switch fit my Payne Model PA12NA018000AAAA?
Yes. This is the factory-specified OEM pressure switch for the Payne Model PA12NA018000AAAA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the pressure switch on my Payne Model PA12NA018000AAAA?
Difficulty: Medium (20–30 min)
Step 1: Turn off power. Step 2: Locate pressure switch near draft inducer. Step 3: Note tubing orientation. Step 4: Disconnect tubing and wires. Step 5: Remove screw, install new switch. Step 6: Reconnect tubing and wires, restore power.
My furnace shows a pressure switch error. What do I replace?
Furnace LED showing pressure switch error = switch not detecting draft inducer airflow. Try first: clear the rubber tubing to the switch (often clogged with condensation). If problem persists, replace the pressure switch.
Is this pressure switch compatible with Bryant or Payne too?
Many Payne parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Payne pressure switch?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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