
45EG20AJX591 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $15.75 | Condition is New – Open box, Furnas Definite Purpose Controller 24V, 2 Poles # 45EG20AJX591, FREE SHIPPING | 100.0% |
![]() | $18.98 | Condition is New – Open box, Furnas 45EG20AJX591 Definite Purpose Controller L38-612, FREE SHIPPING | 99.7% |
![]() | $18.99 | Condition is New – Open box, nos NIB FURNAS 45EG20AJX591 CONTACTOR 2 POLE 30 AMP 24 V COIL STARTER 277-600 RE, shipping cost = $14.00 | 99.9% |
![]() | $49.99 | Condition is New – Open box, - Lot of 5 - Furnas 45EG20AJX591 Definite Purpose Contactor, FREE SHIPPING | 99.9% |
![]() | $49.99 | Condition is New – Open box, Furnas Definite Purpose Contactor 45EG20AJX591 SER. C P/N L38-612 NIB, FREE SHIPPING | 99.9% |
![]() | $50.00 | Top Pick! Condition is New – Open box, Furnas Definite Purpose Contactor 2-Pole 24V 45EG20AJX591 30A 40A Series C, shipping cost = $10.95 | 100.0% |
![]() | $150.00 | Condition is New – Open box, Furnas contactor-45EG20AJX591 1 Case (12 Per Case), FREE SHIPPING | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $12.00 | Condition is New, Furnas definite purpose contactor # 45EG20AJX591 PN L38-612 24VAC coil, shipping cost = $6.00 | 99.7% |
![]() | $14.99 | Condition is New, Siemens Furnas Definite Purpose Contactor 45EG20AJ 2P, 24V Coil Series C, shipping cost = $4.47 | 99.8% |
![]() | $18.95 | Condition is New, A/C Condenser Contactor Relay 2 Pole 30 Amp 24 volt Fits Furnas 45EG20AJX591, FREE SHIPPING | ![]() |
![]() | $12.00 | Condition is New, FURNAS 45EG20AJX591 30A 2P 24V DEFINITE PURPOSE CONTACTOR - NIB, shipping cost = $7.60 | 99.9% |
![]() | $13.49 | Condition is New, FURNAS Definite Purpose Controller 45EG20AJX591 FL 30 RES 40 Series C 24V, shipping cost = $8.60 | 99.5% |
![]() | $11.50 | Condition is New, * NIB Furnas Definite Purpose Contactor 24V, 2P Cat# 45EG20AJX591 .. YE-46, shipping cost = $11.95 | 99.9% |
![]() | $23.99 | Top Pick! Condition is New, Furnas 24 volt 30 Amp Contactor Relay 45EG20AJX591, FREE SHIPPING | ![]() |
![]() | $15.00 | Condition is New, FURNAS 45EG20AJX591 CONTACTOR 2 POLE 30 AMP 24VOLT COIL STARTER CONTACTOR, shipping cost = $10.00 | 100.0% |
![]() | $29.70 | Condition is New, Lot of 3 NEW Furnas Definite Purpose Contactor 45EG20AJX591 PN L38594 24VAC coil, FREE SHIPPING | 99.5% |
![]() | $155.00 | Top Pick! Condition is New, NEW CASE OF 12 FURNAS ELECTRIC CO 45EG20AJX591 DEFINITE PURPOSE CONTACTOR , shipping cost = $9.95 | ![]() |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $23.79 | Condition is Used, Furnas 45EG20AJX591 Condenser Contactor L38-612, FREE SHIPPING | ![]() |
![]() | $25.00 | Condition is Used, Furnas 24 volt 30 Amp Contactor Relay 45EG20AJX591 - TESTED, FREE SHIPPING | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $12.99 | Condition is Open box, Furnas 24 volt 30 Amp Contactor Relay 45EG20AJX591, shipping cost = $9.95 | 100.0% |

The Furnas 45EG20AJX591 Definate Controller L38-612 is a state-of-the-art HVAC (Heating, Ventilation, and Air Conditioning) control unit designed for residential and light commercial applications. This controller is engineered to deliver precise temperature control and optimal energy efficiency, ensuring maximum comfort for your living or working space.
The controller features a user-friendly LCD (Liquid Crystal Display) touchscreen interface, enabling easy operation and programming. The intuitive menu structure allows users to set temperature, humidity, fan speed, and other comfort preferences with just a few simple touches. The large, clear display ensures that all settings are easily visible at a glance.
This Furnas controller is compatible with both electric and hydronic heating systems, making it a versatile choice for various HVAC applications. It comes equipped with a built-in Wi-Fi module, allowing remote access and control via the Furnas Home app or other compatible platforms. This feature enables users to manage their HVAC system from anywhere, at any time, using their smartphone, tablet, or computer.
The Definate Controller L38-612 is designed with energy efficiency in mind. It utilizes advanced algorithms to optimize heating and cooling cycles, ensuring that energy is used only when necessary. The controller also features a smart recovery function, which learns your preferred temperature settings and adjusts the system accordingly to achieve optimal comfort levels with minimal energy consumption.
Additional features of the Furnas 45EG20AJX591 Definate Controller L38-612 include:* Compatibility with Amazon Alexa and Google Assistant for voice control
* Automatic changeover between heating and cooling modes based on outdoor temperature
* Adjustable fan delay for optimal air circulation
* Filter replacement reminders to ensure optimal system performance
* Programmable vacation mode to conserve energy while you're away
In summary, the Furnas 45EG20AJX591 Definate Controller L38-612 is a high-performance, energy-efficient HVAC control unit designed to deliver precise temperature control, optimal comfort, and easy remote access. Its user-friendly touchscreen interface, advanced features, and compatibility with various HVAC systems make it an excellent choice for homeowners and light commercial applications.
The Furnas L38-612 Definite Proportional Controller model Furnas 45EG20AJX591 is a popular choice for industrial automation applications due to its features and performance. Here are some pros and cons that can help you make an informed decision about purchasing this controller.
Pros:1. High Accuracy: The Furnas L38-612 Definite Pro proportional controller offers high accuracy and precise control of processes, making it suitable for critical applications where tight process control is essential.
2. Wide Input Range: The controller has a wide input range, which makes it flexible to use with various process variables and applications.
3. Easy-to-Use: The controller has a user-friendly interface, making it easy to operate and program. It also comes with pre-configured function blocks, which simplifies the programming process.
4. Durable: The controller is built to withstand harsh industrial environments, making it a reliable choice for long-term use.
5. Cost-Effective: The Furnas L38-612 Definite Proportional controller is cost-effective compared to other high-end controllers, making it an affordable option for small to medium-sized applications.
Cons:1. Limited Communication Interfaces: The controller has limited communication interfaces, which may not be sufficient for complex applications that require extensive data exchange between different devices.
2. Limited Display: The controller has a small display, which may not be suitable for applications where operators need to monitor multiple process variables at once.
3. Limited Memory: The controller has limited memory, which may not be sufficient for applications that require extensive data logging or complex algorithms.
Conclusion:The Furnas L38-612 Definite Proportional controller is a cost-effective and reliable choice for industrial automation applications where high accuracy and precise control are essential. It offers a wide input range, user-friendly interface, and durable construction. However, it may not be suitable for applications that require extensive data exchange between different devices or complex algorithms due to its limited communication interfaces and memory. If your application requires these features, you may want to consider a more advanced controller with more extensive communication interfaces and memory capacity.
Recommendation:If you are looking for a cost-effective and reliable controller for applications where high accuracy and precise control are essential, the Furnas L38-612 Definite Proportional controller is a great choice. However, if your application requires extensive data exchange between different devices or complex algorithms, you may want to consider a more advanced controller with more extensive communication interfaces and memory capacity.
Details:
This contractor is specifically designed for hvac and refrigeration systems, providing reliable efficient control your heating cooling needs. With its durable construction and precise engineering, the Furnas 45EG20AJX591 is a dependable choice for businesses industrial applications requiring temperature control.
specifications maxohvac:
- brand: Furnas
- mpn: 45eg20ajx591
- part type: Controller
- country/region of manufacture: China
- upc: 783087174580
seller maxohvac:
- city: stockton, california
- rating: 98.6%
- # reviews: 1469
offer maxohvac:
- prices: $11.50–$155.00
- item condition:
- New – Open box
- New
- Used
- Open box
- sold #: 23
- options: ship-to-home
- availability: in stock
- in stock #: 5
- started: may 22, 2025
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- wallet: paypal
- other
- credit card: mastercard
shipping maxohvac:
- service: usps ground advantage
- type: calculated
- class: standard
- carrier: usps
- transit: 6-9 days
returns maxohvac:
- policy: returns accepted
- method: money back
- time: 30 days
- paid by: buyer




















