
AT120B1028 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $8.50 | Condition is Open box, Honeywell At120b1028 Foot Mounted 120 Vac Transformer W/ 9" Leadwires End Bells, shipping cost = $10.60 | 99.9% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $2.15 | Condition is New – Open box, Honeywell Transformer Foot Mounted 120 Vac Transformer with 9 in. Lead Wires, shipping cost = $9.62 | 100.0% |
![]() | $3.99 | Condition is New – Open box, Honeywell AT120B1028 Foot Mounted 120 V 60Hz Transformer , shipping cost = $8.00 | 100.0% |
![]() | $14.44 | Top Pick! Condition is New – Open box, Honeywell AT120B1028 Transformer 120V 60Hz 0.23A Q, FREE SHIPPING | ![]() |
![]() | $17.99 | Top Pick! Condition is New – Open box, Honeywell Resideo AT120B1028 Transformer 120V 60Hz 0.23A Q, shipping cost = $9.42 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $8.00 | Condition is New, NEW Honeywell Transformer Foot Mounted 120 Vac Transformer with 9 in. Lead Wires, shipping cost = $5.00 | 99.8% |
![]() | $15.39 | Condition is New, Resideo AT120B1028/U 120V 24V 20VA Foot Mounted Transformer HVAC 9" Leadwires, FREE SHIPPING | 99.5% |
![]() | $15.00 | Top Pick! Condition is New, HONEYWELL AT120B1028 MOUNTED TRANSFORMER PRI: 120V SEC: 24VAC, shipping cost = $11.35 | 98.8% |
![]() | $32.57 | Condition is New, HONEYWELL AT120B1028 AT120B1028 20VA Foot mounted 120-24 Vac Transf, FREE SHIPPING | 97.8% |
![]() | $36.53 | Condition is New, HONEYWELL AT120B1028 AT120B1028 20VA Foot mounted 120-24 Vac Transf, FREE SHIPPING | 98.5% |
![]() | $28.07 | Condition is New, HONEYWELL AT120B1028 / AT120B1028 (BRAND NEW), shipping cost = $12.90 | 99.7% |
![]() | $40.04 | Condition is New, Honeywell AT120B1028 Foot Mounted 120 Vac Transformer W/ 9 Leadwires End Bells, FREE SHIPPING | ![]() |
![]() | $300.00 | Condition is New, New Honeywell AT120B1028 120V/24VAC Mounted Transformer Open Box, shipping cost = $50.00 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $5.50 | Condition is Used, Honeywell AT120B1028 Foot Mounted 120 VAC Transformer W/ 9" Leadwires End Bells, shipping cost = $6.37 | 99.7% |
![]() | $5.00 | Condition is Used, Honeywell Foot Mounted Transformer AT120B1028 S7BAC8/3, shipping cost = $12.20 | 99.4% |
![]() | $9.99 | Condition is Used, Honeywell AT120B1028 Foot Mounted 120 VAC Transformer, shipping cost = $11.35 | 98.9% |
![]() | $12.00 | Condition is Used, Honeywell AT120B1028 Foot Mounted 120 VAC Transformer, shipping cost = $8.75 | 98.9% |
![]() | $6.00 | Condition is Used, Honeywell 120VAC Transformer AT120B1028 S8BAC7/11, shipping cost = $16.70 | 99.4% |
![]() | $22.98 | Condition is Used, Honeywell AT120B1028 Furnace Transformer, FREE SHIPPING | ![]() |

The Honeywell AT120B1028 Transformer is a reliable and efficient electrical component designed for powering Honeywell's top-of-the-line heating and cooling systems. This transformer, with a primary voltage of 120 volts, is a secondary-inline type that delivers a secondary voltage of 24 volts, 2.0 amps.
The transformer is constructed using high-quality materials to ensure durability and long-lasting performance. The core is made of laminated steel for improved temperature resistance, while the windings are made of copper wire for enhanced conductivity. The transformer is also designed to be quiet in operation, making it an ideal choice for use in residential or commercial applications where minimal noise is essential.
Measuring 4.9 inches long, 3.3 inches wide, and 2.2 inches high, the AT120B1028 Transformer is compact in size and easy to install. It comes with a plug-in design, allowing for easy connection to the electrical outlet. The transformer is also UL listed, ensuring compliance with the highest safety standards.
The Honeywell AT120B1028 Transformer is an essential component for powering Honeywell's heating and cooling systems. Its reliable and efficient performance ensures that the system operates smoothly and effectively, maintaining optimal indoor temperatures all year round. The transformer's compact size, quiet operation, and UL listing add to its versatility and suitability for various applications.
Honeywell ATC120B1028 Transformer: A Comprehensive Analysis
The Honeywell ATC120B1028 transformer is a 120V, 2.5kVA single-phase transformer designed for various applications, particularly in heating, ventilation, and air conditioning (HVAC) systems. This analysis aims to provide an in-depth look at the key advantages and disadvantages of using the Honeywell ATC120B1028 transformer.
Advantages:1. Reliability and Durability: Honeywell is a well-established brand in the HVAC industry, known for its high-quality products. The ATC120B1028 transformer is built to meet recognized industry standards, ensuring a long service life and reliable performance.
2. High Power Capacity: With a power capacity of 2.5kVA, this transformer can efficiently handle the electrical requirements of most industrial and commercial HVAC systems, reducing the need for multiple smaller transformers.
3. Single-phase Operation: This transformer's single-phase design allows for simpler installation and setup compared to three-phase transformers in many applications.
4. Enhanced Safety: The ATC120B1028 transformer comes with safety features such as overheat protection, short-circuit protection, and ground fault protection, ensuring the safety of users and the system.
Disadvantages:1. Limited Voltage Range: This transformer is designed for a voltage range of 120V only, which makes it less versatile compared to transformers capable of handling a wider range of voltages.
2. Size and Weight: As a larger and heavier transformer, shipping and installation might incur additional costs. however, the benefits of its high power capacity and efficiency may offset these expenses.
3. Price: The ATC120B1028 transformer may be priced higher than similarly sized alternatives from other manufacturers. Still, investing in a dependable and well-built transformer like this may ultimately save time and money through longer lifespan and less frequent repairs or replacements.
Conclusion:The Honeywell ATC120B1028 transformer is an excellent choice for industrial and commercial applications requiring a high-capacity 120V single-phase transformer. It combines the advantages of a well-known brand, reliability, and safety features in a robust, durable design. Though it might come with a higher price tag and a limited voltage range, the long-term benefits of improved efficiency and low maintenance make it a wise investment for many HVAC applications.
Recommendation:Based on the analysis provided, the Honeywell ATC120B1028 transformer is an excellent option for those seeking a reliable, high-capacity 120V single-phase transformer for their HVAC system. Incorporating over-sized safety margins, performing a thorough cost-benefit analysis, and considering alternate configurations with voltage converters, if necessary, can help offset any concerns regarding the initial investment.
Details:
With a primary voltage of 120v and secondary 24vac, it is compatible with range Honeywell model's including the AT120B1028. The brand and model are reliable indicators of quality performance. This mounted transformer is designed for use in hvac and refrigeration applications.
specifications maxohvac:
- brand: Honeywell
- mpn: At120b1028
- part type: Transformer
offer maxohvac:
- prices: $2.15–$300.00
- item condition:
- Open box
- New – Open box
- New
- Used
- availability: in stock
- started: january 15, 2025
- best offers: true
- sold #: 25
- options: ship-to-home
payments maxohvac:
- other
- wallet: google-pay
- credit card: diners-club
shipping maxohvac:
- transit: 6-13 days
- service: usps ground advantage, usps priority mail
- class: standard, expedited
- type: calculated
- carrier: usps
returns maxohvac:
- policy: no returns
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
seller maxohvac:
- city: charles town, west virginia
- # reviews: 130
- rating: 98.1%
Also Viewed:
- AT40A1121: TRANSFORMER, Honeywell
- AT72D1006: TRANSFORMER PLATE, Honeywell
- AT88A-AT88A1021: TRANSFORMER FURNACE, Honeywell
- R8285D1000: TRANSFORMER BOX, Honeywell
- ST7800A1047: TIMER, Honeywell
- AT75AIKI: TRANSFORMER REGULATOR, Honeywell
- R8146A: TRANSFORMER FAN, Honeywell
- M941D1005: BOX MOTOR, Honeywell
- AT72D1188: TRANSFORMER PANEL, Honeywell
- AT150F: TRANSFORMER FURNACE, Honeywell
- AT250A1006: TRANSFORMER CONTROL, Honeywell



















