Facebook Pixel
Sign-Up Bonus
Get 500 Reward Points instantly when you join.
Redeem Instantly
50 points = $1 off at checkout.
Earn as You Shop
$1 spent = 1 point every time you order.
Member Perks
Unlock exclusive member-only savings and offers.

Observance of Labor day 09/07, Monday we are closed [No shippings and deliveries ], Orders received after 3.00pm CST on 09/04/2026 will be shipping out on Tuesday 09/08/2026.

Register and Earn 500 Reward Points
Toggle Nav
Search
Toggle Nav
Join Our Loyalty Program
main product photo

Lochinvar & A.O. Smith 100111550 Transformer 120V PRI 24V SEC 8.4VA

Rating:
5 5 1
1  Review Add Your Review
Special Price $98.20 Regular Price $112.93
In stock
SKU
100111550
The Lochinvar & A.O. Smith 100111550 is a Transformer 120V PRI, 24V SEC, 8.4VA which is one of the essential electrical parts of water heaters and boilers. transformer reduces the voltage from the initial voltage of 120 volts to a rolling 24 volts, which powers the control circuits as well as safety features. It is particularly developed for Lochinvar and A.O. Smith HVAC systems to improve performance and safety. Advantages include voltage stability, increased system efficiency, and anti-interference performance of electronic devices to achieve the efficient and safe operation of heating systems.
Add to Wish List
HVAC Controls & Electrical, Transformers
Manufacturer:
https://www.partshnc.com/media/catalog/product/1/0/100111550.jpg

Specifications

  • Type: Transformer
  • Primary Voltage:120V
  • Secondary Voltage: 24V
  • Current: 8.4VA
Manufacturer Name: Lochinvar & A.O. Smith
Product Number: 100111550
OEM Part Number: 100111550
Product Description: Transformer
Weight:0.78lbs/353.8g

Choose the best HVAC equipment parts and supplies from PartsHnC!

  • Same Day Shipping

  • Best Quality And Best Price

  • Wide Range of Inventory

  • Best Customer Service

Have More Questions or Need Help to Place The Order?
Reach us at (866)773-0907 or [email protected]

Reviews 1
Write Your Own Review
You're reviewing:Lochinvar & A.O. Smith 100111550 Transformer 120V PRI 24V SEC 8.4VA
Your Rating
Product Questions (2)
Customer Questions
What maintenance is required for the Lochinvar & A.O. Smith 100111550 Transformer?

Regularly inspect the transformer for dust, debris, or signs of overheating. Ensure all wiring connections are secure and free of corrosion. Keep the surrounding area well-ventilated and avoid contact with live terminals during inspection.

What are common issues with the Lochinvar & A.O. Smith 100111550 Transformer?

  • Inconsistent voltage output due to loose connections.
  • Overheating from poor ventilation or overloading.
  • Humming or buzzing noises.
  • Insulation degradation causing short circuits.

Installation Steps

Step 1: Turn off power to the system to ensure safety.

Step 2: Locate the existing transformer in the control panel.

Step 3: Disconnect wiring from the old transformer, noting connections for reference.

Step 4: Remove the old transformer from its mounting.

Step 5: Mount the new transformer in the same location.

Step 6: Reconnect wires according to the original configuration, restore power, and test output voltage for proper operation.