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Factory Authorized Parts™ HH18HA490 Rollout Limit Switch 290°F Manual Reset SPST

Factory Authorized Parts™ HH18HA490 Rollout Limit Switch 290°F Manual Reset SPST

Regular price $35.00 USD
Regular price Sale price $35.00 USD
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Factory Authorized Parts™ - HH18HA490 Rollout Limit Switch 290°

  • Critical Combustion Safety: Instantly cuts power to the gas valve if flames exit the burner box, protecting your home from fire.

  • OEM Factory Calibration: Engineered by Factory Authorized Parts™ to match the exact thermal footprint of Carrier and Bryant high-efficiency units.

  • Manual Reset Protection: Ensures a human inspection occurs after a failure, preventing the dangerous cycling of a compromised furnace.

  • Heavy-Duty Construction: Features a Klixon disc design that resists heat fatigue and electrical arcing for long-term monitoring.

  • Fast Diagnostic Turnaround: Replacing a "weak" or carbon-fouled rollout switch can resolve intermittent safety lockouts and restore heating.

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Specifications

Product Details

  • Brand: Factory Authorized Parts™ (Carrier/Bryant/Payne)
  • Manufacturer: Klixon / United Technologies
  • Part Number: HH18HA490
  • Weight: 0.10 lbs
  • Voltage: 24V / 120V (Pilot Duty)
  • Amps: 0.5A @ 24V / 375 VA @ 120 VAC
  • Open Temperature: 290°F (143°C)
  • Reset Type: Manual Push-Button

description

Factory Authorized Parts™ HH18HA490 Rollout Limit Switch 290°F Manual Reset SPST

The Ultimate Flame-Safe Guardian

The HH18HA490 is a critical high-temperature safety component engineered as the primary defense against "flame rollout" in high-efficiency gas furnaces. Serving as a localized sensor near the burner assembly, this switch acts as a secondary "brain" for combustion safety. It is specifically designed for Carrier, Bryant, and Payne gas furnace families, monitoring the burner compartment for diverted flames caused by heat exchanger failure or flue blockages. When it detects a hazardous temperature rise to 290°F, it instantly breaks the control circuit, shutting down gas flow to prevent catastrophic equipment damage or fire.

Key Features

  • Genuine OEM Part Number: Exact replacement for HH18HA490, ensuring your furnace maintains its original UL safety certification and engineering specifications.
  • Manual Reset Security: Features a "trip-only" manual reset button that prevents the furnace from automatically restarting until a technician has identified and cleared the underlying rollout cause.
  • Precise 290°F Calibration: Optimized to trigger at a high thermal threshold, distinguishing between normal radiant heat and dangerous flame diversion.
  • Normally Closed SPST Logic: Utilizes a Single-Pole, Single-Throw (SPST) configuration that remains closed during safe operation and opens immediately upon thermal emergency.
  • Corrosion-Resistant Disc Design: Built with a durable Klixon-style disc for reliable performance in the harsh, high-heat environment of a burner box.

Product Details

  • Brand: Factory Authorized Parts™ (Carrier/Bryant/Payne)
  • Manufacturer: Klixon / United Technologies
  • Part Number: HH18HA490
  • Weight: 0.10 lbs
  • Voltage: 24V / 120V (Pilot Duty)
  • Amps: 0.5A @ 24V / 375 VA @ 120 VAC
  • Open Temperature: 290°F (143°C)
  • Reset Type: Manual Push-Button

🛠️ HVAC Depot Pro Tip

"Never Just Push the Button!" While a tripped HH18HA490 can be reset by pressing the red center button, a trip is a symptom of a serious safety issue—not a nuisance. Take a picture of the switch's location and the surrounding burner soot before resetting. If the switch has tripped, perform a "Visual Burner Check": look for wavy or "lazy" yellow flames that roll out of the burner opening. This usually indicates a cracked heat exchanger or a soot-clogged flue that must be professionally inspected before the system is safe to operate.

Cross-Reference

  • Legacy / Superseded Numbers: HH18HA291, HH18HA292, HH118HA490A
  • Drawing Numbers: 95-314680, 95-314860, 1NT08L-2696
  • Equivalent Brands: ICP (ArcoAire, Comfortmaker, Heil, Tempstar), White-Rodgers / Emerson

Model Compatibility

58DXT Series (Suffixes: 060-12112, 060-11112, 060-10112)

310A/J Series (Suffixes: 024040, 036040, 036060, 048080, 060100)

58SB/SC Series (Suffixes: 040-08, 040-12, 060-12, 080-16, 100-20)

PG8M Series (Suffixes: 045040, 045070, 070110)

 



Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

At HVAC Parts & Equipment Depot, customer satisfaction is important to us. This Refund & Return Policy explains how returns, exchanges, and refunds are handled for purchases made through TopHVACParts.com.

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.

Non-Returnable Items

The following items are not eligible for return or refund:

  • Installed or used parts.
  • Products showing signs of installation, modification, or damage caused after delivery.
  • Items missing original packaging.
  • Sale or clearance items.
  • Special-order or custom-order products.
  • 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.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

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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