
TB401224-B11 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $14.99 | Condition is Used, Jard E66-40-OW-9921 Furnace Transformer TB401224-B11, shipping cost = $8.18 | 100.0% |
![]() | $22.00 | Condition is Used, Jard TB401224-B11 K 120v to 24v 40 VA transformer from Dunkirk Boiler, FREE SHIPPING | 99.5% |
![]() | $21.95 | Top Pick! Condition is Used, JARD TB401224-B11 120V to 24V 40VA Control Transformer HVAC Furnace Class 2, shipping cost = $9.95 | 100.0% |
![]() | $30.00 | Condition is Used, Jard E66-40-OW-9921 Furnace Transformer TB401224-B11C71, FREE SHIPPING | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $41.83 | Top Pick! Condition is New – Open box, JARD TB401224B11 / TB401224B11 (NEW NO BOX), shipping cost = $36.56 | 99.2% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $35.00 | Condition is New, Jard TB401224-B11 K 120v to 24v 40 VA transformer , FREE SHIPPING | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $20.00 | Condition is Good, Jard E66-40-OW-9921 Transformer 4011F TB401224-B11C71 USED, FREE SHIPPING | 98.5% |

The Jard TB401224-B11 Transformer is a versatile and reliable electrical component designed for use with Dunkirk Boilers and other low-voltage heating systems. This transformer can effectively handle both 120V AC primary voltage and 24V AC secondary voltage, making it an ideal solution for converting and stepping down electrical power to suit the specific requirements of your heating system.
Measuring 12.5 inches long, 6.2 inches wide, and 6 inches high, this Jard TB401224-B11 transformer boasts a compact and robust design. It features a copper-wound primary coil that ensures efficient current transfer and excellent heat dissipation, while its secondary winding adopts a high-grade insulating material to ensure reliable performance even under heavy loads. The transformer's compact size also makes it easy to install and integrate into existing heating systems.
This transformer is designed and manufactured to meet the stringent standards of the UL 5085-1 and UL 5085-2 Underwriters Laboratories safety and performance specifications. Its heavy-duty metal casing not only adds to its durability but also offers robust protection against external impacts, corrosion, and other environmental hazards.
Additionally, the Jard TB401224-B11 transformer comes equipped with a thermal protector, which safeguards the transformer from overheating and potential damage. Its built-in ventilation system ensures proper airflow inside the transformer, enabling it to operate at optimal temperatures.
In summary, the Jard TB401224-B11 Transformer represents a top-tier electrical component for supplying the proper voltage to Dunkirk Boilers and other low-voltage heating systems. Its compact size, robust construction, and UL-listed compliance make it an essential addition to any residential or commercial heating setup, ensuring reliable, efficient, and safe performance for years to come.
The Jard TB401224-B11 Transformer is a 120V-24V, 40A model designed for use with Dunkirk boilers. Here are some pros and cons that may help you make an informed decision about purchasing this transformer:
Pros:1. Safety: The transformer is UL listed which ensures that it meets the safety standards set by Underwriters Laboratories.
2. Versatility: It can be used with both indirect-fired and direct-fired Dunkirk boilers, making it a flexible option for various boiler applications.
3. Quality: Jard is a well-known and reputed brand in the heating industry, known for producing high-quality HVAC equipment.
4. Efficiency: The transformer is designed to offer efficient power conversion, which can save energy and reduce utility bills.
5. Warranty: The transformer comes with a one-year manufacturer's warranty, providing peace of mind and protection against faulty parts or workmanship.
Cons:1. Size and Weight: The transformer is substantial in size and weight, weighing around 19.5 pounds and measuring 13.5 inches in length, 10.5 inches in width, and 6.5 inches in height. Ensure that you have enough space to accommodate it in your boiler room.
2. Cost: Compared to some other transformer brands, the Jard TB401224-B11 may be considered expensive. However, its high-quality construction, safety features, and versatility could justify the investment for some users.
3. Potential complications with installation: The transformer may come with installation complexities, especially if you don't have experience working with HVAC equipment. It is recommended to hire a professional to perform the installation to ensure proper wiring and safety.
Overall, the Jard TB401224-B11 Transformer is an excellent option for those seeking a versatile, efficient, and reliable transformer for their Dunkirk boiler system. Its safety features, warranty, and quality construction make it a worthwhile investment, despite its size and cost. Ultimately, consider your unique situation and requirements before making a final decision, and remember that having a professional technician handle the installation process can save you headaches and potential complications in the long run.
Details:
Fast shipping.
specifications centrafurn:
- brand: Jard
- mpn: Tb401224-b11
- type: Central Furnace
- heating system: Boiler
- voltage: 120 V
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
payments centrafurn:
- credit card: discover
- wallet: paypal
- other
shipping centrafurn:
- transit: 4-10 days
- type: calculated
- carrier: usps
- class: standard
- service: usps ground advantage
returns centrafurn:
- policy: no returns
offer centrafurn:
- started: february 9, 2025
- options: ship-to-home
- prices: $14.99–$41.83
- item condition:
- Used
- New – Open box
- New
- Good
- in stock #: 5
- sold #: 26
- availability: in stock
seller centrafurn:
- # reviews: 518
- rating: 100.0%
- city: sun prairie, wisconsin
Also Available:
- TF402424-B51C84: TRANSFORMER FURNACE HVAC, Jard






