Lennox L40 Smart Thermostat
No certified firmware update since October 14, 2025
Lennox L40 Smart Thermostat by Lennox International: certified Matter device (Thermostat). Radio: Wi-Fi. Matter 1.3.
Price comparison
No price comparison has been set up for this device yet.
Compatibility with smart home platforms
Whether the platform supports this device type (Thermostat). This is an assessment based on the platforms’ lists, not a guarantee for every feature.
- Google HomeDevice type supported
- Amazon AlexaDevice type supported
- Apple Home *Device type usually supported
- SmartThings *Device type usually supported
- Home Assistant *Device type usually supported
Data as of 2026-10-28. Platforms keep adding support; check the manufacturer’s information before buying. Platforms marked * publish no list of their own, so the entries are based on reports.
Technical data
- Manufacturer
- Lennox International
- Product type
- Heating, cooling & water
- Device type
- Thermostat
- Radio protocol
- Wi-Fi
- Matter version
- Matter 1.3
- Model number
- 108275
- First certified
- September 24, 2025
- Latest certification
- October 14, 2025
- Certificate ID
- CSA25B3CMAT47758-24
- Vendor / product ID (VID/PID)
- 0x1356 / 0x0002 (4950 / 2)
Factory reset
General advice
- First remove the device in your smart home app (controller) so its pairing is deleted there.
- Reset the device as the manufacturer describes – often a reset button or a fixed sequence of power cycles. The exact sequence differs per device; use the manual.
- The device then starts in pairing mode. Set it up again with its QR code or setup code.
Resetting erases the device’s settings and assignments.
Manufacturer links
Update history (certified firmware versions)
2 certified versions, latest on October 14, 2025. New versions appear here automatically once they are listed in the certification database.
| Version | Certified on | Matter | Certificate ID |
|---|---|---|---|
| 04.38.0087current | October 14, 2025 | 1.3 | CSA25B3CMAT47758-24 |
| 04.38.0081First certification | September 24, 2025 | 1.3 | CSA2592AMAT47228-24 |
Source: Distributed Compliance Ledger of the Connectivity Standards Alliance (as of November 3, 2026). No guarantee.