What are the specs for this Limit Switch?

The correct replacement for Goodman model AMS81405DNA — B1370155 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Goodman equipment which lists the model number AMS81405DNA — B1370155.

What symptoms indicate I need a new limit switch?

Common symptoms that indicate you need a new limit switch include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this limit switch compatible with Bryant or Payne systems too?

Many Goodman parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

IMAGE COMING SOON

Goodman

OEM Goodman 120°F Auxiliary Limit Switch for AMS81405DNA — B1370155

Name: OEM Goodman 120°F Auxiliary Limit Switch for AMS81405DNA — B1370155
Brand: Goodman
SKU: GOODMAN-7234
Price: 29.95 USD
Availability: InStock

SKU: GOODMAN-7234 Brand: Goodman

$29.95 $38.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The Goodman B1370155 Auxiliary Limit Switch is a genuine OEM temperature-limit safety control rated at 120°F, used on Goodman AMS81405DNA gas furnaces and compatible models. Typically mounted near the blower or secondary heat-exchanger area, it monitors for abnormal temperature rise from restricted airflow — a dirty filter, blocked return, or failing blower — and interrupts the heating circuit to protect the furnace from overheating.

Specifications

Type: Auxiliary / secondary limit switch
Trip temperature: 120°F
OEM Part Number: B1370155
Compatible Model: AMS81405DNA (and select Goodman/Amana furnaces)
Function: Normally closed, opens on over-temperature
Fit: Direct OEM replacement

OEM vs. Generic

This genuine Goodman OEM limit switch is matched to the furnace's exact 120°F setpoint and mounting footprint, so it protects at the temperature the engineers intended. Generic substitutes with the wrong trip point cause short-cycling or fail to trip when needed. As a safety device, OEM is strongly recommended.

Installation Difficulty

Easy–Moderate (2/5). Disconnect power, photograph and remove the wiring, unscrew the switch from its mounting location, install the new B1370155, and reconnect. Roughly 15 minutes. If the switch had tripped, check the filter and blower for airflow restrictions before restarting.

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 info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Goodman 120°F Auxiliary Limi...

$29.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman AMS81405DNA — B1370155?

Yes. This is the factory-specified OEM limit switch for the Goodman AMS81405DNA — B1370155. 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 limit switch on my Goodman AMS81405DNA — B1370155?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new limit switch?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this limit switch compatible with Bryant or Payne too?

Many Goodman 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 Goodman limit 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.

Menu