What are the specs for this Limit Switch?

The correct replacement for Goodman model ADS81155CNA — B1370194 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 ADS81155CNA — B1370194.

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.

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Goodman

OEM Goodman 250°F Primary Limit Switch for ADS81155CNA — B1370194

Name: OEM Goodman 250°F Primary Limit Switch for ADS81155CNA — B1370194
Brand: Goodman
SKU: GOODMAN-3128
Price: 56.34 USD
Availability: InStock

SKU: GOODMAN-3128 Brand: Goodman

$56.34 $76.06

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Goodman B1370194 Primary High-Limit Switch (250°F)

The B1370194 is a genuine OEM 250°F primary high-limit switch for the Goodman ADS81155CNA furnace and compatible Goodman/Amana models. Mounted on the heat exchanger or burner bulkhead, this is the furnace's main overheat safety: if supply-air temperature climbs too high — from a dirty filter, failed blower, or closed registers — the switch opens, cuts the gas valve, and prevents heat-exchanger damage. A furnace that short-cycles on heat or repeatedly trips out often has a faulty primary limit.

Specifications

Trip temperature: 250°F (auto reset)
Type: Normally closed primary high-limit
Function: Primary overheat / heat-exchanger protection
Fit: Goodman ADS81155CNA and compatible furnaces
OEM Part Number: B1370194

OEM vs. Generic

This genuine Goodman OEM limit is factory-set to the precise 250°F open point and exact bracket profile your model uses. Generic substitutes with mismatched trip points or insertion depths can cause nuisance lockouts or, worse, fail to protect the heat exchanger. For the primary safety control, OEM is the right call.

Installation Difficulty

Easy to Moderate — 15–25 minutes. Power down, note the orientation and insertion depth, remove the mounting screws, transfer the wiring, and seat the new switch fully against the bulkhead. Address the underlying airflow restriction (filter, blower) so the new limit isn't tripped again.

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 250°F Primary Limit ...

$56.34

Frequently Asked Questions

Does this Limit Switch fit my Goodman ADS81155CNA — B1370194?

Yes. This is the factory-specified OEM limit switch for the Goodman ADS81155CNA — B1370194. 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 ADS81155CNA — B1370194?

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.

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