LENNOX 1155-101 Armstrong Defrost Control Board Honeywell 20483901-B D335A

( Brand: Lennox ), ( Manufacturer Part Number: 1155-101 ), ( Model: 20483901-B ), ( Compatible Brand: For Armstrong, For Ducane, For Lennox ), ( Type: Defrost Control Circuit Board )

Review LENNOX Armstrong Defrost Control Board Honeywell Used #d335a

Lennox 1155-101 Armstrong Defrost Control Board (20483901-B) - Honeywell D335A

The Lennox 1155-101 Armstrong Defrost Control Board (20483901-B) is a critical component for maintaining the efficient operation of your heating and cooling system, specifically for Lennox heat pumps. This board, also known as the Honeywell D335A, is a high-quality replacement part designed to ensure seamless defrosting, thus preserving the performance and longevity of your system.

This control board is a direct replacement for the original component in your Lennox heat pump model 1155-101. It is engineered to work seamlessly with the Armstrong heating and cooling systems, offering a reliable solution for defrost control. The board is equipped with advanced technology that enables it to manage the defrosting process, preventing ice build-up on the outdoor heat exchanger during cold weather.

The Lennox 1155-101 Armstrong Defrost Control Board (20483901-B) is a user-friendly component. It is easy to install, thanks to its plug-and-play design. The board comes pre-programmed, eliminating the need for additional programming or adjustments, saving you time and effort during installation.

This replacement control board is a perfect choice for homeowners who prioritize system efficiency and performance. By ensuring proper defrosting, the Lennox 1155-101 Armstrong Defrost Control Board helps maintain optimal heat transfer, enabling your system to operate at its best. This, in turn, contributes to energy savings and reduced utility bills.

In summary, the Lennox 1155-101 Armstrong Defrost Control Board (20483901-B) is a high-quality, easy-to-install, and user-friendly replacement part designed to ensure efficient defrosting in your Lennox heat pump system. It is a reliable solution for maintaining the performance and longevity of your heating and cooling system.

**Product Review: Lennox 1155-101 Armstrong Defrost Control Board (20483901-B) vs Honeywell D335A**

**Lennox 1155-101 Armstrong Defrost Control Board (20483901-B)**

1. Compatible with various Lennox heating and cooling systems, ensuring a wide range of applicability.

2. Manufactured by a reputable brand, Lennox, known for their quality products and customer service.

3. Designed to provide efficient defrost control, ensuring optimal performance of the heating system.

1. Slightly more expensive compared to the Honeywell D335A.

2. Limited availability in some regions, which may result in longer shipping times.

**Honeywell D335A**

1. Lower price point compared to the Lennox 1155-101, making it a budget-friendly option.

2. Widely available, ensuring quick delivery times in most regions.

3. Compatible with a variety of heat pump systems, not just Lennox.

1. Some users have reported issues with the quality and durability of the Honeywell D335A.

2. May not be as efficient as the Lennox 1155-101 in defrost control, potentially leading to reduced system performance over time.

Both the Lennox 1155-101 Armstrong Defrost Control Board (20483901-B) and the Honeywell D335A have their strengths and weaknesses. If budget is a primary concern and you're not tied to the Lennox brand, the Honeywell D335A could be a suitable choice. However, if you prioritize efficiency and durability, and are willing to invest a bit more, the Lennox 1155-101 might be the better option. It's always a good idea to research user reviews and consult with a professional HVAC technician to make an informed decision.

Details:

There is no warranty on used parts. This is Lennox Armstrong Defrost Control Board 20483901-B Honeywell 1155-101 used assembly. Was in good working condition when removed. Most of the parts require specific knowledge and skills to be installed properly.

Purchasing used parts you agree with the statement that sometimes hidden defects or malfunctions may occur during installation continuous use. This part was removed by HVAC installer from a working unit. Please see more details from the images attached.

part #: 1155101 prices

• $150.25-$211.99

specifications fablowehva:

• brand: Lennox
• mpn: 1155-101
• model: 20483901-b
• compatible brand: For Armstrong, For Ducane, For Lennox
• type: Defrost Control Circuit Board

returns fablowehva:

• method: Money back
• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

offer fablowehva:

• quantity: 1
• started: October 23, 2025
• sold: 0
• options: Ship-to-home
• availability: In Stock

seller fablowehva:

• rating: 99.9%
• city: Glendale, California
• # reviews: 15277

shipping fablowehva:

• carrier: USPS
• transit: 4-7 Days
• type: Fixed
• service: USPS First Class, USPS Priority Mail
• class: Standard, Expedited
• cost: $0.00

general fablowehva:

• condition: Used
• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Fans Blowers

payments fablowehva:

• credit card: Mastercard
• other
• wallet: Google-pay

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