Lennox S40 Smart Thermostat
CSA Matter certified (certificate CSA25B3DMAT47759-24). Uses Wi-Fi, so it needs no Thread border router, only your platform’s Matter controller.
At a glance: Matter certified: Yes, Oct 14, 2025 · Connectivity: Wi-Fi · Thread border router: Not needed (uses Wi-Fi)
- Works with
- Matter certified as a thermostat, so it can work with Matter apps such as Apple Home, Google Home, Alexa and SmartThings when the app supports its device type; supported features vary by app. The maker hasn’t named platforms on a page we hold.
- CSA certificate
- CSA25B3DMAT47759-24, certified Oct 14, 2025
- Network & hub
- Wi-Fi; needs no Thread border router, only your platform’s Matter controller
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Amazon
Where to buy
1 store
Check the model, region and pack size at the retailer. Prices and availability are confirmed there.
CSA Matter Certified
Certificate: CSA25B3DMAT47759-24Lennox S40 Smart Thermostat is a smart thermostat. It is listed as connecting over Wi-Fi. It is CSA Matter certified (October 14, 2025), so it can work with Matter apps such as Apple Home, Google Home, Alexa and SmartThings when the app supports its device type; supported features vary by app.
Specifications
- Brand
- Lennox
- Category
- Thermostats
- Protocols
- Wi-Fi
- Certificate ID
- CSA25B3DMAT47759-24
- Certificate holder
- Lennox International, Inc.
- Certified
- Oct 14, 2025
- Firmware
- 04.38.0087
Ecosystem compatibility
Quick answers
- Is the Lennox S40 Smart Thermostat Matter certified?
- Yes. MatterCatalog matches it to CSA Matter certificate CSA25B3DMAT47759-24, certified Oct 14, 2025.
- Does the Lennox S40 Smart Thermostat use Thread or Wi-Fi?
- Wi-Fi. Its catalog record lists Wi-Fi, so it joins your Wi-Fi network and does not need a Thread border router. You still need your platform’s Matter controller.
- Where can I buy the Lennox S40 Smart Thermostat?
- MatterCatalog has verified store links for it at Amazon. Check the current price, model and pack size at the store.
From this product’s catalog record, not hands-on testing. Editorial policy
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Lennox S40
CSA certified