What are the specs for this Switch?

The correct replacement for ICP model Model 48TM482583 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 ICP equipment which lists the model number Model 48TM482583.

What symptoms indicate I need a new switch?

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

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ICP

ICP Limit Ls Switch HH18HA178 for Model 48TM482583

Name: ICP Limit Ls Switch HH18HA178 for Model 48TM482583
Brand: ICP
SKU: ICP-48TM482583-HH18HA178
Price: 54.95 USD
Availability: InStock

SKU: ICP-48TM482583-HH18HA178 Brand: ICP

$54.95

Market price $64.64

SAVE $9.69 (15%) vs market

Genuine ICP OEM part · Guaranteed to fit your unit

✓ Guaranteed to fit 48TM482583 — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Genuine OEM ICP switch,limit(ls), part HH18HA178 — the factory-exact replacement for the 48TM482583. Fitment guaranteed — free returns if it doesn't fit.

Specifications

Function	temperature activated switch
Manufacturer	Carrier
Note	Exact PN listed as 'Carrier HH18HA178 Temperature Activated Switch' on hvacdiscounters.com, but no open_temp/close_temp/reset_type published there or on any second domain. Product identity confirmed; temperature values insufficient (suffix does not encode temp, no inference).
OEM Part Number	HH18HA178
Brand	ICP
Condition	New — genuine OEM

Symptoms of a failing switch

Watch for: Error codes tracing to this component, the system short-cycles or locks out, performance that degrades under load. Catching it early protects the components around it.

Replacement guide

Swap the part, torque fasteners evenly, and route wires away from hot or moving surfaces. Run a complete cycle and verify normal operation before closing the panel.

FAQ

Is this the exact OEM part for my 48TM482583? Yes — verified factory fitment for that model.

Not sure of your model? Chat with Mike with the number from your unit's nameplate and we'll confirm before you order.

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 $99
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

ICP Limit Ls Switch HH18HA178 fo...

$54.95

Frequently Asked Questions

Does this Switch fit my ICP Model 48TM482583?

Yes. This is the factory-specified OEM switch for the ICP Model 48TM482583. 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 switch on my ICP Model 48TM482583?

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 switch?

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

Is this switch compatible with Bryant or Payne too?

Many ICP 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 ICP 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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