Lennox 12S77 Heater
The Lennox 12S77 (Model ECB25-12.5CB-9) is a high-performance 12.5KW electric heater kit specifically engineered for seamless integration with CBX25UH and CBX25UHV series air handlers. This auxiliary heat section provides reliable supplemental or emergency heating, ensuring system setpoints are maintained during extreme ambient drops. Designed for three-phase power applications, the unit operates across a versatile voltage range of 208V to 230/460V, providing the thermal lift required for commercial and demanding residential configurations.
This OEM Lennox electric heat kit features an integrated 60-amp circuit breaker, simplifying field installation by providing built-in overcurrent protection and a local disconnect point. The compact design allows for efficient fitment within the cabinet, while the heavy-duty heating elements are built to resist oxidation and thermal stress. As a veteran-preferred HVAC replacement part, the 12S77 is the standard for contractors requiring precise supplemental electric heat capacity without the need for extensive field-fabricated safety controls.
Key Benefits
- Dual Voltage Compatibility: Engineered for 208-230/460V three-phase systems, offering flexibility for various job site electrical requirements.
- Integrated Safety: Includes a factory-installed 60-amp circuit breaker to ensure proper overcurrent protection and simplified servicing.
- High Thermal Output: Delivers a consistent 12.5KW (42,650 BTU) of supplemental heat to support heat pump systems during defrost cycles or high-demand periods.
- Direct OEM Fit: Guaranteed mechanical compatibility with Lennox CBX25 series air handlers, reducing labor time and ensuring correct airflow across the elements.
Common Questions
Can this heater be installed in a single-phase system?
No, the 12S77/ECB25-12.5CB-9 is specifically designed for three-phase electrical configurations. For single-phase applications, verify the appropriate ECB25 series model that matches your site's phase and voltage.
Which air handler models are compatible with this heat kit?
This kit is primarily designed for the Lennox CBX25UH and CBX25UHV series. Always check the physical cabinet size and the unit's rating plate to confirm the maximum allowable KW for your specific air handler model.
Does this unit include a sequence controller?
Yes, the assembly includes the necessary sequencers and high-limit safety switches required to manage the heating elements in conjunction with the indoor blower and thermostat calls.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $453.36
-65%$453.36
$158.68Lennox 12S77 Heater
The Lennox 12S77 (Model ECB25-12.5CB-9) is a high-performance 12.5KW electric heater kit specifically engineered for seamless integration with CBX25UH and CBX25UHV series air handlers. This auxiliary heat section provides reliable supplemental or emergency heating, ensuring system setpoints are maintained during extreme ambient drops. Designed for three-phase power applications, the unit operates across a versatile voltage range of 208V to 230/460V, providing the thermal lift required for commercial and demanding residential configurations.
This OEM Lennox electric heat kit features an integrated 60-amp circuit breaker, simplifying field installation by providing built-in overcurrent protection and a local disconnect point. The compact design allows for efficient fitment within the cabinet, while the heavy-duty heating elements are built to resist oxidation and thermal stress. As a veteran-preferred HVAC replacement part, the 12S77 is the standard for contractors requiring precise supplemental electric heat capacity without the need for extensive field-fabricated safety controls.
Key Benefits
- Dual Voltage Compatibility: Engineered for 208-230/460V three-phase systems, offering flexibility for various job site electrical requirements.
- Integrated Safety: Includes a factory-installed 60-amp circuit breaker to ensure proper overcurrent protection and simplified servicing.
- High Thermal Output: Delivers a consistent 12.5KW (42,650 BTU) of supplemental heat to support heat pump systems during defrost cycles or high-demand periods.
- Direct OEM Fit: Guaranteed mechanical compatibility with Lennox CBX25 series air handlers, reducing labor time and ensuring correct airflow across the elements.
Common Questions
Can this heater be installed in a single-phase system?
No, the 12S77/ECB25-12.5CB-9 is specifically designed for three-phase electrical configurations. For single-phase applications, verify the appropriate ECB25 series model that matches your site's phase and voltage.
Which air handler models are compatible with this heat kit?
This kit is primarily designed for the Lennox CBX25UH and CBX25UHV series. Always check the physical cabinet size and the unit's rating plate to confirm the maximum allowable KW for your specific air handler model.
Does this unit include a sequence controller?
Yes, the assembly includes the necessary sequencers and high-limit safety switches required to manage the heating elements in conjunction with the indoor blower and thermostat calls.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Lennox 12S77 (Model ECB25-12.5CB-9) is a high-performance 12.5KW electric heater kit specifically engineered for seamless integration with CBX25UH and CBX25UHV series air handlers. This auxiliary heat section provides reliable supplemental or emergency heating, ensuring system setpoints are maintained during extreme ambient drops. Designed for three-phase power applications, the unit operates across a versatile voltage range of 208V to 230/460V, providing the thermal lift required for commercial and demanding residential configurations.
This OEM Lennox electric heat kit features an integrated 60-amp circuit breaker, simplifying field installation by providing built-in overcurrent protection and a local disconnect point. The compact design allows for efficient fitment within the cabinet, while the heavy-duty heating elements are built to resist oxidation and thermal stress. As a veteran-preferred HVAC replacement part, the 12S77 is the standard for contractors requiring precise supplemental electric heat capacity without the need for extensive field-fabricated safety controls.
Key Benefits
- Dual Voltage Compatibility: Engineered for 208-230/460V three-phase systems, offering flexibility for various job site electrical requirements.
- Integrated Safety: Includes a factory-installed 60-amp circuit breaker to ensure proper overcurrent protection and simplified servicing.
- High Thermal Output: Delivers a consistent 12.5KW (42,650 BTU) of supplemental heat to support heat pump systems during defrost cycles or high-demand periods.
- Direct OEM Fit: Guaranteed mechanical compatibility with Lennox CBX25 series air handlers, reducing labor time and ensuring correct airflow across the elements.
Common Questions
Can this heater be installed in a single-phase system?
No, the 12S77/ECB25-12.5CB-9 is specifically designed for three-phase electrical configurations. For single-phase applications, verify the appropriate ECB25 series model that matches your site's phase and voltage.
Which air handler models are compatible with this heat kit?
This kit is primarily designed for the Lennox CBX25UH and CBX25UHV series. Always check the physical cabinet size and the unit's rating plate to confirm the maximum allowable KW for your specific air handler model.
Does this unit include a sequence controller?
Yes, the assembly includes the necessary sequencers and high-limit safety switches required to manage the heating elements in conjunction with the indoor blower and thermostat calls.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
