1. Water Heaters New/Used Products
  2. sku: 6275797397820741
  3. SMITH 100074252

A.O. SMITH 100074252 Fuse Overheat Tankless 020363190507 319143-067 EX02A

319143-067 A.o. Smith 100074252 Ex02a Fuse Overheat Cutoff - Tankless

( Brand: A.o. Smith ), ( Manufacturer Part Number: 100074252 ), ( Model: 100074252 319143-067 EX02A ), ( Compatible Brand: A.o. Smith, Takagi ), ( Type: Water Heater Fuse Overheat Cutoff ), ( Compatible Model: Models Vary ), ( California Prop 65 Warning: California Proposition 65 Warning, Go To Www.p65warnings.ca.gov. ), ( UPC: 020363190507 )

Review A.O. SMITH .o. Ex02a.o. Fuse Overheat Cutoff Tankless

The A.O. Smith 100074252 319143-067 EX02A Fuse is an essential component in the safety system of tankless water heaters manufactured by A.O. Smith. This fuse is specifically designed for the model EX02A, ensuring the efficient and reliable operation of the water heater.

This fuse is engineered to protect the water heater from potential overheating issues. It functions by monitoring the electrical current flowing through the system. If the current exceeds a safe level, the fuse will break the circuit to prevent damage to the water heater.

The A.O. Smith EX02A Fuse is a cartridge fuse, which means it is housed in a replaceable ceramic cartridge. The fuse is rated at 15 amps and 250 volts, making it suitable for the electrical requirements of most tankless water heaters.

This fuse is easy to replace, requiring no special tools or expertise. To replace the fuse, simply turn off the power to the water heater, remove the old fuse, and insert the new one in its place. A visual inspection of the fuse can help determine if it needs to be replaced, as a blown fuse will appear as a darkened or melted strip.

The A.O. Smith 100074252 319143-067 EX02A Fuse is a critical safety component for your tankless water heater. Regularly checking the fuse and replacing it as needed will help ensure the continued safe and efficient operation of your water heater.

The A.O. Smith 100074252 319143-067 EX02A fuse is a crucial component in the safety system of certain A.O. Smith tankless water heaters. This fuse is designed to protect the heating system from overheating and potential damage. Here are some pros and cons of buying this fuse:

Pros:

1. Safety: This fuse is an essential safety feature that helps prevent potential damage to the water heater and reduces the risk of fires or other hazards.

2. Easy to replace: If the fuse blows, it is a relatively simple process to replace it. This can save homeowners the cost and inconvenience of calling a professional plumber or electrician.

3. Cost-effective: The cost of this fuse is relatively low, making it an affordable solution for ensuring the safe and efficient operation of a tankless water heater.

Cons:

1. Limited lifespan: The fuse may need to be replaced periodically, which can be an inconvenience for homeowners.

2. Potential for false alarms: In some cases, the fuse may trip without an actual overheating issue, which can lead to unnecessary replacement costs and inconvenience.

In conclusion, the A.O. Smith 100074252 319143-067 EX02A fuse is an essential safety component for certain tankless water heaters. While it does come with some potential drawbacks, such as a limited lifespan and the possibility of false alarms, the benefits of ensuring safe and efficient water heating make it a worthwhile investment for most homeowners.

Recommendation: If you own an A.O. Smith tankless water heater and are experiencing issues with overheating or other safety concerns, it is recommended that you replace the fuse as a precaution. Additionally, it may be a good idea to consider investing in a reliable water heater maintenance program to help prevent future issues and reduce the need for frequent fuse replacements.

Details:

100074252 319143-067 EX02A.O. Smith Fuse Overheat Cutoff - Tankless, condition: New Genuine OEM Part,: Replacement fuse overheat cutoff for select.O. Smith / Takagi tankless water heater model's.

part #: 100074252 prices

  • $15.49-$40.06

specifications wateheat:

  • brand: A.o. Smith
  • mpn: 100074252
  • model: 100074252 319143-067 Ex02a
  • compatible brand: A.o. Smith, Takagi
  • type: Water Heater Fuse Overheat Cutoff
  • compatible model: Models Vary
  • california prop 65 warning: California Proposition 65 Warning, Go To Www.p65warnings.ca.gov.
  • upc: 020363190507

payments wateheat:

  • wallet: Paypal
  • credit card: Discover
  • other

returns wateheat:

  • paid by: Buyer
  • method: Money back
  • policy: Returns Accepted
  • time: 14 Days

shipping wateheat:

  • service: UPS Ground, UPS Next Day Air
  • cost: $13.00
  • class: Standard, One-day
  • transit: 3-5 Days
  • type: Fixed
  • carrier: UPS

general wateheat:

  • condition: New
  • Heating, Cooling Air > Water Heaters > Water Heater Parts

seller wateheat:

  • city: Arlington height, Illinois
  • # reviews: 7266
  • rating: 100.0%

offer wateheat:

  • started: December 13, 2025
  • sold: 0
  • quantity: 2
  • availability: In Stock
  • options: Ship-to-home
compatible brand: a.o. smith, takagi, type: water heater fuse overheat cutoff, compatible model: models vary, california prop 65 warning: california proposition 65 warning, go to www.p65warnings.ca.gov.,
category: home & garden > heating, cooling air > water heaters > water heater parts, sku: 6275797397820741,

A.o. Smith 100074252 Is Similar To:

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3 offers $15.49–$40.06 USD
  • Offer #1: $15.49 price + $13.00 shipping estimate = $28.49* total.+$13.00 shipping
  • Offer #2: $40.06 price + $0.00 shipping estimate = $40.06* total. OVERHEAT CUTOFF FUSE.FREE SHIPPING
  • Offer #3: $31.97 price + $0.00 shipping estimate = $31.97* total. Smith OVERHEAT CUTOFF FUSE Manufacturer: Lochinvar & A.O.FREE SHIPPING

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