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| Brand | Lennox |
| Series | ML297V |
| Model / SKU | ML297V-45000 |
| Furnace Size | 45,000 BTU class |
| Efficiency | 97% AFUE |
| Heating Stages | Two-stage |
| Blower Motor | Variable-speed |
| Ignition | SureLight® Silicon Nitride Ignitor |
| ENERGY STAR | Qualified |
| Fuel Type | Gas |
| Configuration | As specified by the selected installation configuration |
| Installation | Professional installation included |
| Heat Exchanger Warranty | 20-Year Heat-Exchanger Warranty |
| Parts Warranty | 10-Year Parts Warranty |
| Labour Warranty | 1-Year Labour Warranty — ZERO HVACR |
Lennox 45,000 BTU class gas furnace — ML297V-45000 with 45,000 BTU class, 97% AFUE, Two-stage, Variable-speed, Gas. Professional installation is included.
Product Overview
Lennox ML297V 45,000 BTU 97% AFUE Two-Stage Variable-Speed Gas Furnace is a high-efficiency residential gas furnace designed to provide dependable heating performance and consistent indoor comfort. The 45,000 BTU capacity class is intended for applications where a properly sized furnace is required. With 97% AFUE efficiency and two-stage heating, the system is configured for efficient operation and reliable comfort.
Model: ML297V-45000
Key Features
- High-Efficiency Heating: 97% AFUE performance for efficient fuel use.
- Heating Control: Two-stage operation helps match heating output to demand.
- Airflow Management: Variable-speed supports steady airflow and indoor comfort.
- Fuel Type: Gas as specified for this model.
- Installation Configuration: As specified by the selected installation configuration for flexible residential applications.
- ENERGY STAR: Qualified.
- Ignition: SureLight® Silicon Nitride Ignitor.
Technical Specifications
| Brand | Lennox |
| Series | ML297V |
| Model / SKU | ML297V-45000 |
| Furnace Size | 45,000 BTU class |
| Efficiency | 97% AFUE |
| Heating Stages | Two-stage |
| Blower Motor | Variable-speed |
| Ignition | SureLight® Silicon Nitride Ignitor |
| ENERGY STAR | Qualified |
| Configuration | As specified by the selected installation configuration |
| Installation | Professional installation included by |
| Heat Exchanger Warranty | 20-Year Limited Warranty |
| Parts Warranty | 10-Year Extended Limited Warranty available with registration and applicable terms |
| Labour Warranty | 1 Year — |
| SKU / Listing Identifier | ML297V-45000 |
| Nominal Furnace Size | 45,000 BTU class |
| Fuel Type | Gas |
| AFUE | 97% |
| Energy Star | Qualified |
| Quiet Operation | Steel cabinet and sound-absorbing materials |
| Humidity Control | Enhanced humidity control |
| Blower Compartment | Sealed |
| Air Filter / Humidifier | Compatible |
| Dual Fuel | Capable |
Installation
Lennox furnace installation should be completed by a qualified HVAC professional. Professional installation is included as specified in the source product information; final scope depends on site conditions and applicable installation requirements.
Warranty Information
- 20-Year Limited Warranty
- 10-Year Extended Limited Warranty available with registration and applicable terms
- 1 Year
Why Consider This Lennox Furnace?
- High-efficiency heating designed for residential comfort.
- Capacity and operating configuration matched to the selected model.
- Technical specifications are presented clearly for easier comparison.
- Professional installation support for safe and reliable system operation.
Product specifications, efficiency ratings, warranty coverage and installation requirements are subject to the applicable manufacturer documentation and may vary by model or configuration.
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