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Lennox L40 Smart Thermostat
Lennox International, Inc.Climate

Lennox L40 Smart Thermostat

CSA Certified2 retailers compared
$699.03

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Amazon

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2

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May 19, 2026

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Lennox L40 Smart Thermostat by Lennox. This CSA Matter certified smart home device brings seamless integration, enhanced security, and reliable performance to your ecosystem. Perfect for building a connected home.

Wi-Fi

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Check best deal on Amazon$699.03

Last checked: Mar 16, 2026

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Last checked: May 19, 2026Price confidence: recently verified
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$699.03

Last checked: Mar 16, 2026

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Specifications

Brand
Lennox International, Inc.
Category
Climate
Protocols
Wi-Fi
Price
$699.03
Certificate ID
CSA2592AMAT47228-24
Certified
Oct 14, 2025
Firmware
04.38.0087

Ecosystem Compatibility

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Best Matter Smart Thermostats 2026

Smart thermostats with Matter — save energy with universal compatibility.

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Lennox L40 Smart Thermostat

CSA certified• $699.03• Amazon

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