
21220 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $1447.85 | Condition is New, LENNOX Scratch & Dent Central Air Conditioner R-454B Air Handler CBK45UHVT-024-2, shipping cost = $149.00 | 99.0% |

The Lennox 21220 Damper, also known as part number 21Z20, is an essential component of gravity exhaust systems designed for Lennox heating and cooling equipment. This damper plays a crucial role in ensuring efficient and effective performance of your HVAC system.
This damper is meticulously crafted using high-quality materials that are resilient to the rigors of frequent use. Its robust design includes a heavy-duty steel construction, ensuring durability and longevity. The damper is specifically designed to fit seamlessly into Lennox gravity exhaust systems, ensuring a secure and snug fit.
The Lennox 21220 Damper is a gravity exhaust damper, meaning it relies on the natural flow of exhaust gases to operate. It features a simple yet effective design that includes a heavy-duty damper blade, which is engineered to provide optimal exhaust flow while minimizing energy loss. The damper blade is meticulously balanced to ensure smooth operation, reducing the potential for noise and vibration.
One of the key features of this damper is its ability to modulate exhaust flow based on temperature requirements. This feature is essential for maintaining the optimal operating temperature of your heating and cooling system, ensuring maximum energy efficiency and consistent performance. The damper is also designed to automatically close when the system is not in use, preventing exhaust gases from escaping and helping to maintain indoor air quality.
The Lennox 21220 Damper is easy to install, making it a popular choice among HVAC professionals and DIY enthusiasts alike. It comes with clear installation instructions, ensuring a hassle-free installation process. The damper is also backed by Lennox's industry-leading warranty, providing peace of mind and protection against manufacturing defects.
In summary, the Lennox 21220 Damper is a high-performance, durable, and easy-to-install component that is essential for the efficient and effective operation of Lennox gravity exhaust heating and cooling systems. Its robust design, temperature modulation capabilities, and automatic closing feature make it a must-have addition to any Lennox HVAC system.
The Lennox 21220 damper, also known as a gravity exhaust panel or a draft inducer, is a component used in heating systems to improve combustion efficiency and airflow. This part can be an essential addition to your Lennox heating system. Here are some pros and cons of buying this damper:
Pros:1. Enhances Combustion Efficiency: A gravity exhaust panel draws room air into the furnace, creating a better seal and reducing the loss of warm air. This results in improved combustion efficiency and better heat output.
2. Increases Airflow: The damper helps to create a more uniform airflow through the furnace, which leads to more even heating throughout your home.
3. Reduces Drafts: By sealing the exhaust vent more effectively, this damper helps to reduce drafts, which can save you energy and make your home more comfortable.
4. Long-Lasting: Lennox is a reputable brand known for manufacturing high-quality heating components, and the 21220 damper is no exception. It is designed to be durable and long-lasting, which can save you money in the long run.
Cons:1. Cost: The Lennox 21220 damper is not an inexpensive component. It may be more costly than some aftermarket alternatives or older models.
2. Installation: Installing the damper may require professional help, which can add to the overall cost. However, a professional installation can ensure that the damper is installed correctly and functioning optimally.
3. Size and Compatibility: This damper is designed specifically for Lennox heating systems, and it may not be compatible with other brands or models. Be sure to check the compatibility before making a purchase.
In conclusion, the Lennox 21220 damper can be a valuable addition to your heating system, providing improved combustion efficiency, increased airflow, reduced drafts, and long-lasting durability. However, it comes with a higher cost and may require professional installation. Ultimately, the decision to purchase this damper depends on your heating system's specific needs and your budget. If you have a Lennox heating system and are looking for optimal performance, this damper could be a worthwhile investment.
Details:
Have 15 in stock new.
specifications maxohvac:
- brand: Lennox
- mpn: 21220
- type: Damper
- color: Beige, Silver
- material: Metal
seller maxohvac:
- # reviews: 6
- rating: 0.0%
- city: rogers, arkansas
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
returns maxohvac:
- policy: no returns
offer maxohvac:
- availability: in stock
- sold #: 6
- started: april 3, 2026
- best offers: true
- price: $1447.85
- item condition: New
- options: ship-to-home
shipping maxohvac:
- transit: 5-11 days
- carrier: usps
- type: calculated
- service: usps ground advantage
- class: standard
payments maxohvac:
- money order
- other
- wallet: google-pay
- credit card: discover
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