Lennox L40 Smart Thermostat
The Lennox L40 is a sleek, ENERGY STAR® certified smart thermostat designed for universal compatibility with single-stage heating and cooling systems, including dual-fuel setups. Featuring a vibrant touchscreen display and intuitive navigation, it offers advanced comfort control with Schedule IQ™ technology and Smart Away® geo-fencing to optimize energy use. Enjoy remote access via the Lennox Home app or voice control through Amazon Alexa, Google Assistant, and Control4®. The L40 provides real-time energy reports, customizable maintenance reminders, and auto-changeover between heating and cooling. With smooth setback recovery, short-cycle protection, and a 5-year limited warranty, the L40 combines modern design with intelligent performance for effortless home comfort management.
Basic Information
- Certificate ID
- CSA25B3CMAT47758-24
- Company
- Lennox International, Inc.
- Added
- Oct 14, 2025
- Last Updated
- Dec 02, 2025
- Certification Date
- Oct 14, 2025
Technical Details
- Firmware Version
- 04.38.0087
- Hardware Version
- 0004
- Specification Version
- 1.3
Product Details
- Product ID
- 0x0002
- Vendor ID
- 0x1356
- Primary Device Type ID
- 0x0301
SKU Information
Transport Interfaces
- Wi-Fi Support
- Yes
- TIS/TRP Tested
- Yes
External Links
Other Certificates from Lennox International, Inc.
| Certificate ID | Title | Added | Actions |
|---|---|---|---|
| CSA25B3DMAT47759-24 | Lennox S40 Smart Thermostat | Oct 14, 2025 | |
| CSA25B3EMAT47760-24 | Lennox S40 Smart Thermostat | Oct 14, 2025 | |
| CSA2592AMAT47228-24 | Lennox L40 Smart Thermostat | Sep 24, 2025 | |
| CSA2592BMAT47229-24 | Lennox S40 Smart Thermostat | Sep 24, 2025 | |
| CSA25928MAT47226-24 | Lennox S40 Smart Thermostat | Sep 24, 2025 |