
10B99 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $62.95 | Condition is New, Lennox 10B99 Relay White-Rodgers 93-222636-25320R, shipping cost = $4.86 | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $74.99 | Condition is New – Open box, Lennox 10B99 Relay White-Rodgers 93-222636-25320R, FREE SHIPPING | 99.9% |

Introducing the Lennox 10B99 Relay, a high-performing and reliable component designed specifically for use with Lennox heating and cooling systems. Manufactured by White-Rodgers, this 25A, 24V AC coil-operated relay is engineered to ensure optimal system operation.
The Lennox 10B99 Relay boasts a compact design, measuring just 3.3 inches long, 2.1 inches wide, and 1.1 inches high. Its white finish complements most HVAC system aesthetics, allowing it to blend seamlessly with the surrounding components.
This relay is an essential part of your heating and cooling system, responsible for controlling various system functions based on electrical signals. It features a coil-operated design, which means that the relay contacts are closed when an electrical current is applied to the coil. This makes it an ideal solution for applications where precise control and dependability are crucial.
The Lennox 10B99 Relay is rated for a maximum current of 25 amperes and a maximum voltage of 24 volts AC. It comes with two normally open (NO) contacts and one common (C) terminal, allowing for three contact configurations. This versatility makes it suitable for a range of applications within your heating and cooling system.
Additionally, the relay features a built-in diode that ensures proper direction of current flow and protects against inductive loads. It is also designed with a latching mechanism that retains the contact position even after the coil voltage is removed. This ensures that the system maintains its desired state even when power is temporarily lost.
The Lennox 10B99 Relay is not only a reliable performer but also an easy-to-install component. It comes with securing screws and a mounting bracket to facilitate a quick and secure installation. The relay is also RoHS compliant, meaning that it is free from certain hazardous materials, making it an environmentally-friendly choice.
In summary, the Lennox 10B99 Relay is a high-performing and versatile component designed specifically for use with Lennox heating and cooling systems. Its compact design, reliable operation, and easy installation make it an essential addition to your system. With its white finish, it also complements most HVAC system aesthetics. Trust White-Rodgers, a leading manufacturer in HVAC control solutions, to deliver a top-quality relay that ensures optimal system performance.
Lennox 10B99 Relay vs. White-Rodgers 93-222636-25320R: A Comparative Analysis
Introduction:Both Lennox 10B99 and White-Rodgers 93-222636-25320R are heating relays used in HVAC systems. These relays are essential components in controlling the heating operation of your furnace. In this analysis, we will discuss the pros and cons of each relay to help you make an informed decision.
Lennox 10B99 Relay: Pros:1. Designed specifically for Lennox furnaces, ensuring a perfect fit and seamless integration.
2. Reliable and durable, with a long lifespan.
3. Easy to install, with clear instructions and a user-friendly design.
Cons:1. Limited compatibility with other brands and models of furnaces.
2. Higher price point compared to some aftermarket alternatives.
White-Rodgers 93-222636-25320R Relay: Pros:1. Universal compatibility with various brands and models, making it a versatile choice.
2. Affordable price point, which can save you money in the long run.
3. Compact design, allowing for easy installation in tight spaces.
Cons:1. May not work perfectly with some specific models or brands, requiring additional troubleshooting.
2. Potentially lower build quality compared to OEM alternatives, which could lead to replacement more frequently.
Conclusion: When deciding between the Lennox 10B99 relay and the White-Rodgers 93-222636-25320R relay, consider the following factors:1. If you own a Lennox furnace, opting for the Lennox 10B99 relay ensures a perfect fit and seamless integration with your system.
2. If you have a multi-brand HVAC system or plan to upgrade in the future, the universal compatibility of the White-Rodgers relay may be more convenient.
3. If budget is a concern, the more affordable White-Rodgers relay might be the better choice.
4. If reliability and durability are your top priorities, the Lennox 10B99 relay may be worth the investment.
Recommendation:Based on the analysis, if you own a Lennox furnace and prioritize a perfect fit and long-term reliability, we recommend the Lennox 10B99 relay. However, if you have a multi-brand HVAC system, are budget-conscious, or don't mind troubleshooting potential compatibility issues, the White-Rodgers 93-222636-25320R relay could be a suitable alternative.
Details:
Lennox 10B99 relay white-rodgers 9 0r.
specifications maxohvac:
- brand: Lennox
- mpn: 10b99
- type: Relay
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- wallet: google-pay
- credit card: visa
- other
offer maxohvac:
- in stock #: 2
- started: may 26, 2026
- prices: $62.95–$74.99
- item condition:
- New
- New – Open box
- availability: in stock
- options: ship-to-home
- sold #: 5
shipping maxohvac:
- carrier: usps
- service: usps ground advantage
- class: standard
- transit: 3-9 days
- type: fixed
returns maxohvac:
- time: 30 days
- policy: returns accepted
- paid by: buyer
- method: money back
seller maxohvac:
- # reviews: 4651
- rating: 99.8%
- city: raymond, nebraska
Also Viewed:
- 58327: MOTOR, Lennox
- R8330J-1001-87163-P-8-10414: , Lennox Ducane Armstrong Allied Honeywell
- 45C02: KIT, Lennox Klixon
- 58K7301: FURNACE VALVE, Lennox
- 67K65: CONTROL FAN, Lennox
- 91-132016-13041: FURNACE, Essex
- 56L68-56L6801-23614-70: CONTROL BLOWER, Lennox Deltrol
- 36E32201-28G1401-28G14: VALVE, Lennox Pulse
- R8222B: COIL, Lennox Honeywell
- 1F90-371: CARRIER THERMOSTAT, Carrier
- 23490-71: COIL, Lennox

