
X400 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $250.00 | Condition is Used, BECKETT OIL BURNER UNIT MODEL AF AFG - Weil Mclain Boiler Furnace Water Heater, shipping cost = $123.65 | 99.7% |

The Beckett X400 Oil Burner Unit, model AF-AFG, is a versatile and efficient solution for heating your home or business using a Weil-McLain boiler or furnace-water heater. This burner unit is designed to provide reliable and consistent performance, even in the most demanding heating conditions.
The X400 burner features a robust, cast iron construction that ensures durability and longevity. The burner head is equipped with a high-efficiency, swirl-flow combustion system that maximizes fuel utilization and minimizes emissions. The burner also includes a fully modulating, adjustable control system that allows for precise temperature control and optimal fuel efficiency.
The X400 oil burner unit is compatible with a wide range of fuel oils, including #1 and #2 oil. It also includes a built-in, automatic nozzle cleaning system that ensures consistent fuel delivery and prevents nozzle clogging. The burner also includes a spark ignition system that provides reliable ignition even in low temperature conditions.
The AF-AFG version of the X400 oil burner unit includes a factory-installed AFUE (Annual Fuel Utilization Efficiency) rated, Weil-McLain low NOx burner housing. This housing reduces nitrogen oxide emissions, making it an excellent choice for environments where low emissions are a priority.
The X400 oil burner unit is easy to install and maintain. It includes a clear, easy-to-read window that allows for easy monitoring of the burner's operation. The burner also includes a service door that provides easy access to the internal components for routine maintenance and repairs.
Overall, the Beckett X400 Oil Burner Unit, model AF-AFG, is a high-performance, efficient, and reliable solution for heating your home or business using a Weil-McLain boiler or furnace-water heater. Its robust construction, advanced combustion system, and easy-to-use controls make it an excellent choice for homeowners and contractors alike.
The Beckett X400 Oil Burner Unit AF AFG Weil-McLain Boiler Furnace Water Heater is a popular choice for those looking to heat their homes or businesses efficiently using oil. Here are some pros and cons of investing in this particular oil burner unit:
Pros:1. High-Efficiency: This oil burner unit has an AFG (Advanced Gas) rating, which means it meets or exceeds the efficiency standards set by the Environmental Protection Agency (EPA).
2. Durability: Weil-McLain is a well-known brand for manufacturing high-quality heating equipment. The X400 oil burner unit is made with sturdy materials and has a long lifespan.
3. Versatility: This oil burner unit can be used with both water and warm air heating systems, making it a versatile option for various heating applications.
4. Easy Installation: The X400 oil burner unit comes with pre-wired controls, which simplifies the installation process.
5. Safety Features: The oil burner unit comes with several safety features, such as a low-oil shut-off switch, an automatic air pump, and a pressure switch, which help ensure safe and efficient operation.
Cons:1. Cost: The Beckett X400 Oil Burner Unit AF AFG Weil-McLain Boiler Furnace Water Heater can be more expensive than some other oil burner units on the market.
2. Complexity: While the installation process is simplified with pre-wired controls, the oil burner unit itself can be complex, and professional installation is recommended.
3. Maintenance: Regular maintenance is required to ensure the oil burner unit operates efficiently and safely, which can add to the overall cost.
In conclusion, the Beckett X400 Oil Burner Unit AF AFG Weil-McLain Boiler Furnace Water Heater is a high-efficiency, durable, and versatile heating solution, but it comes with a higher cost and requires professional installation and regular maintenance.
If you are looking for a cost-effective option, this oil burner unit may not be the best choice. However, if you prioritize high efficiency, durability, and versatility, and are willing to invest in professional installation and maintenance, then the Beckett X400 Oil Burner Unit AF AFG Weil-McLain Boiler Furnace Water Heater may be the right choice for you. Ultimately, it is essential to consider your specific heating needs and budget before making a decision.
Details:
Unit was removed from an working system weil mclain boiler, it tested and is working fine. Note: comes with by-pass plug for 2 pipe system if necessary, new combustion head f3, gaskets and manual.
specifications centrafurn:
- brand: Beckett
- mpn: X400
- type: Central Furnace
- power source: Oil
- heating system: Furnace
shipping centrafurn:
- transit: 3-8 days
- carrier: usps
- class: expedited
- service: usps priority mail
- type: calculated
payments centrafurn:
- credit card: mastercard
- wallet: google-pay
- other
offer centrafurn:
- price: $250.00
- item condition: Used
- started: april 13, 2026
- options: ship-to-home
- in stock #: 1
- sold #: 4
- availability: in stock
returns centrafurn:
- method: money back
- paid by: buyer
- policy: returns accepted
- time: 60 days
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
seller centrafurn:
- # reviews: 5034
- rating: 99.7%
- city: newark, new jersey
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