CSA Matter Certified
Certificate: CSA25B3CMAT47758-24LennoxThermostats
Lennox L40 Smart Thermostat
CSA Certified2 retailers comparedWorks with major ecosystems
$699.030
Share:
Compare merchants before you buy
Top offers surfaced above the fold for faster checkout decisions.
Lennox L40 Smart Thermostat with Matter support from Lennox. CSA-certified smart thermostat for major smart home ecosystems.
Wi-Fi
Compare Prices
2 retailers — find the best deal2 verified offers
Data Quality: High
Buy on Amazon$699.03
Last checked: Mar 16, 2026
Price and availability can change fast — compare retailers before checkout.
Last checked: Mar 16, 2026Price confidence: recently verified
LennoxVerified
Check price
Last checked: Mar 3, 2026
We may earn a commission when you buy through our links.
Specifications
Ecosystem Compatibility
🔗Matter
🍎Apple Home
📢Alexa
🏠Google Home
⚡SmartThings
📖
Best Matter Smart Thermostats 2026
Smart thermostats with Matter — save energy with universal compatibility.
Read the full buying guide →
More from Lennox
See all →
Customer Reviews
No reviews yet
Be the first to review Lennox L40 Smart Thermostat!
Customers also viewed
More Matter devices similar by category and brand.
Lennox
Lennox S40 Smart Thermostat
$699.03
Lennox
Lennox L40 Smart Thermostat
$699.03
Warmup
Warmup 7iE Smart Matter WiFi Thermostat
$283.50
Google
Google Nest Learning Thermostat (4th Gen)
$268.99
Google
Google Nest Thermostat (2020)
$99.99
Resideo
Resideo Technologies, Inc. FocusPro S200 / X2S Smart Thermostat
$87.99
Resideo
Resideo Technologies, Inc. ElitePRO/X8/X7 Smart Thermostat
$195.00
Aqara
Aqara Lumi United Technology Co., Ltd. Thermostat Hub W200
$66.64
Stay Updated
Get notified when new Matter-certified devices launch.
No spam. Unsubscribe anytime.
Lennox L40 Smart Thermostat
CSA certified• $699.03