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Factory Authorized Parts™ HH18HA498 Furnace Rollout Limit Switch 180°F Manual Reset

Factory Authorized Parts™ HH18HA498 Furnace Rollout Limit Switch 180°F Manual Reset

Low stock: 1 left

Regular price $35.00 USD
Regular price Sale price $35.00 USD
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Factory Authorized Parts™ - Limit Switch

  • Critical Safety Monitoring: Shuts down the heating cycle instantly if flames are detected outside the combustion chamber.

  • Factory Authorized Quality: Ensures the exact temperature setpoint required for Carrier, Bryant, and Payne warranty compliance.

  • Manual Reset Safety: Prevents dangerous automatic restarts, forcing a necessary safety check of the furnace heat exchanger.

  • Direct Mechanical Fit: Features the standard OEM mounting bracket for a 5-minute "screws-in, wires-on" installation.

  • Durable Bi-Metal Disc: Designed for high-duty cycles to ensure the switch remains accurate over years of operation.

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Specifications

Product Details

  • Brand: Factory Authorized Parts™ (Carrier/Bryant/Payne)
  • Manufacturer: United Technologies / Klixon
  • Part Number: HH18HA498
  • Weight: 0.12 lbs
  • Voltage: 24V / 120V (Pilot Duty)
  • Amps/Watts: 0.5A @ 24VAC / 125VA @ 120VAC
  • Ignition Type: Compatible with Spark and Hot Surface Ignition systems
  • Open Temperature: 180°F
  • Reset Type: Manual Push-Button

description

Factory Authorized Parts™ HH18HA498 Furnace Rollout Limit Switch 180°F Manual Reset

The Combustion Chamber Guardian

The HH18HA498 is a high-precision safety component designed to act as the "eyes" of your furnace’s burner assembly. As a Factory Authorized Parts™ rollout switch, this device is the primary defense against diverted flames—a condition known as "rollout"—which occurs when combustion gases cannot exit through the heat exchanger. Specifically engineered for Carrier, Bryant, and Payne gas furnaces, this switch monitors the temperature within the burner cabinet. If it detects a thermal spike reaching 180°F, it instantly breaks the electrical circuit to the gas valve, preventing fire hazards and protecting the internal "brain" (control board) from heat damage.

Key Features

  • OEM Safety Certification: Engineered as a direct replacement for part number HH18HA498, maintaining the rigorous safety standards required for Carrier-family heating equipment.
  • 180°F Thermal Precision: Calibrated to trip at exactly 180°F, ensuring rapid response to flame rollout while preventing nuisance trips during standard operation.
  • Manual Reset Protocol: Designed with a manual reset button that requires physical intervention, ensuring the system cannot restart until the underlying safety issue is inspected.
  • High-Heat Durability: Constructed with a specialized bi-metal disc housed in a corrosion-resistant bracket to withstand the extreme environment of the burner compartment.
  • Fail-Safe Design: The Single-Pole, Single-Throw (SPST) normally closed logic ensures that if the switch fails or a wire is disconnected, the furnace will fail into a safe "off" state.

Product Details

  • Brand: Factory Authorized Parts™ (Carrier/Bryant/Payne)
  • Manufacturer: United Technologies / Klixon
  • Part Number: HH18HA498
  • Weight: 0.12 lbs
  • Voltage: 24V / 120V (Pilot Duty)
  • Amps/Watts: 0.5A @ 24VAC / 125VA @ 120VAC
  • Ignition Type: Compatible with Spark and Hot Surface Ignition systems
  • Open Temperature: 180°F
  • Reset Type: Manual Push-Button

🛠️ HVAC Depot Pro Tip

"Take a Picture of the Soot!" Before you reset a tripped HH18HA498, use your phone to take a picture of the area around the switch. Look for black carbon "soot" or scorched paint on the burner box. This switch trips because flames are literally "rolling out" of the heat exchanger. After installing the new switch, perform a diagnostic check: if the flames are "pulling back" into the heat exchanger when the blower motor kicks on, your heat exchanger is likely cracked and requires immediate professional attention.

Cross-Reference

  • Superseded Numbers: HH18HA214, HH18HA215
  • Legacy Numbers: HH18HA398, 1013444
  • Drawing Numbers: 313362-446, 1NT08L-2446
  • White-Rodgers Equivalent: 3L05-180

Model Compatibility

58STA/STX Series (Suffixes: 045-12, 070-12, 090-14, 110-20, 135-22)

310A/J Series (Suffixes: 024045, 036070, 048090, 066110, 066135)

912S/915S Series (Suffixes: 30040S, 36060S, 42080S, 60100S)

PG8M Series (Suffixes: 045045, 070070, 090090, 110110)



Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

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Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

  • The item must be unused, uninstalled, and in its original condition.
  • The item must be returned in its original packaging.
  • Model numbers and serial numbers must match the original purchase records.
  • Proof of purchase or order confirmation is required.

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The following items are not eligible for return or refund:

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  • Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

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To request an exchange, contact us at:

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Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

  • Refunds will be issued to the original payment method.
  • Processing typically takes 7–14 business days after approval.
  • Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

  • Our shipping error,
  • A defective product,
  • A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Michel & Siso are very knowledgeable and explain everything to where I could understand! Amazing experience! Thank you will always come here for any AC needs. Trustworthy and excellent customer service.

Celest G.
Verified Customer
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