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Goodman | B1370735 | Furnace Fan Time Delay Relay | 24V Coil | 120V NO

Goodman | B1370735 | Furnace Fan Time Delay Relay | 24V Coil | 120V NO

11 in stock

Regular price $32.43 USD
Regular price Sale price $32.43 USD
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Reliable Fan Sequencing & Comfort

  • Eliminates Cold Drafts: Ensures the heat exchanger is hot before the blower starts.

  • Standard 24V Logic: Compatible with all standard residential thermostats and transformers.

  • Heavy-Duty Contacts: Rated for high-amperage blower motor startups without arcing.

  • Compact Mounting: Small footprint allows for easy installation in tight electrical vestibules.

  • System Longevity: Post-cycle cooling delay protects the heat exchanger from thermal stress.

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Specifications

Product Details

  • Brand: Goodman / Amana
  • Manufacturer: Daikin Comfort Technologies
  • Part #: B1370738
  • UPC/SKU: 193031101720
  • Shipping Weight: 0.3 lbs
  • Coil Voltage: 24 VAC
  • Contact Voltage: 120 VAC / 240 VAC
  • Terminals: 1/4" Male Quick-Connect

description

Goodman B1370735 Furnace Fan Time Delay Relay - 24V Coil - 120V NO


The Goodman B1370738 is a genuine OEM replacement fan time delay relay (TDR) specifically engineered for Goodman GMS8, GDS8, and GMT series gas furnaces. This specialized component acts as the sequencing bridge between the thermostat's call for heat and the high-voltage blower motor circuit. Unlike universal sequencers, this relay is calibrated to the precise millisecond delay required to allow the heat exchanger to reach optimal temperature before airflow begins, preventing the circulation of cold air into the living space. It is the factory-authorized solution for systems utilizing standalone fan control rather than integrated circuit boards.

Key Features

  • Genuine OEM Part #B1370738: This is the direct factory-spec replacement for the B13707-38, ensuring correct timing sequences for Goodman and Amana air handlers.
  • Optimized Delay Calibration: Engineered with a specific "on-delay" to maximize heat exchanger efficiency and an "off-delay" to purge residual heat after the burner shuts down.
  • Fixes Blower Failures: Specifically designed to resolve issues where the indoor fan fails to energize during the heating cycle or stays running indefinitely due to stuck internal contacts.
  • Thermal Protection Legacy: Replaces older B13707 series relays with upgraded internal thermal elements that resist "drifting" timing issues common in high-heat environments.

Product Details

  • Brand: Goodman / Amana
  • Manufacturer: Daikin Comfort Technologies
  • Part #: B1370738
  • UPC/SKU: 193031101720
  • Shipping Weight: 0.3 lbs
  • Coil Voltage: 24 VAC
  • Contact Voltage: 120 VAC / 240 VAC
  • Terminals: 1/4" Male Quick-Connect

🛠️ HVAC Depot Pro Tip

Take a Picture First: The B1370738 uses a mix of low-voltage (24V) and line-voltage (120V) connections. Photograph the wire colors on the NC/NO terminals before removal to prevent a short circuit that could blow the transformer. Diagnostic Check: If your furnace burners light but the fan never kicks on, jump the "R" to the "G" terminal at the thermostat; if the fan still doesn't start but you hear the relay click, the internal contacts of the B1370738 are likely pitted and need replacement.

Cross-Reference

  • Superseded: B13707-38, B13707-38S, B1370735
  • Legacy: 12S20, 12S22, 120-21332-402
  • Drawing Numbers: Z-B13707-38, 40665-001
  • White-Rodgers/Emerson Equivalents: 50A55 series (replaces standalone TDR functionality) or White-Rodgers 90-340 relay series.

Model Compatibility

  • GMS8 (Suffixes: 0403AX, 0703AX, 0904BX, 1155CX)
  • GDS8 (Suffixes: 0403AX, 0703AX, 0804BX, 1005CX)
  • GMT (Suffixes: 0453AX, 0704BX, 0905CX, 1155DX)
  • GMN0 (Suffixes: 0603AX, 0804BX, 1005CX)
  • ARUF (Suffixes: 182416, 303016, 364216)

Specification

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Last Updated: June 2026

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

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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.

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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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