Buying a Lennox S40: What to Know

Important Information When Purchasing Lennox S40 Smart Thermostats

At Lennox, your comfort and confidence in your home’s technology matters to us. We’re sharing this information to help you avoid potential issues and better understand recent concerns involving certain Lennox S40 Smart Thermostats.

Lennox has identified that some S40 Smart Thermostats reported as stolen are being offered for sale on unauthorized third-party online marketplaces. While these listings may appear legitimate, products sold outside proper Lennox channels may not be supported.

Every Lennox S40 Smart Thermostat is uniquely identified. If a thermostat is confirmed to be stolen:

• Warranty coverage may not apply

• Smart features and app connectivity may be restricted or unavailable

• The thermostat may be disabled to prevent improper use

What to Do Next

If your thermostat displays a message, alert and/or error code identifying it as part of a stolen shipment, we recommend the following next steps:

• Attempt to return the thermostat through the original place of purchase, following that seller’s return or refund process.

• Purchase a replacement thermostat from a Lennox Dealer to ensure full warranty coverage, reliable performance, and smart connectivity.

If you have questions or are concerned about a recent purchase, please contact your local Lennox Dealer or Lennox Customer Support for guidance: 1 (800) 953-6669

Lennox stands behind every properly sourced product, helping ensure full support, reliable performance, and peace of mind.

Thank you for choosing Lennox.

Why is Lennox sharing this notice?

Lennox has identified stolen S40 Smart Thermostats that are being sold through some unauthorized third-party online marketplaces. This information is shared to help homeowners avoid purchasing products that may not be supported.

How can I tell if I purchased from an authorized Lennox seller?

If a thermostat has been identified as stolen, a message, alert and/or error code will be displayed directly on the device with a QR code and link directing homeowners to information about next steps.

Only thermostats identified as stolen include these messages, alerts and/or error codes.

What happens if my S40 was identified as stolen?

Thermostats identified as stolen may not be eligible for warranty coverage, technical support, or full smart functionality. Connectivity may be limited or the device may be disabled.

We recommend attempting to return the thermostat through the original place of purchase, then contacting your local Lennox Dealer for help with replacement options. Lennox Customer Support is also available if you need guidance: 1 (800) 953-6669

Can a stolen S40 still work?

It may appear to work initially, but functionality is not guaranteed. Smart features or app connectivity may be restricted.

Will Lennox provide warranty or technical support for these thermostats?

Lennox may not provide warranty service, replacements, or technical support for stolen products.

What should I do if my thermostat is already installed?

If you’re concerned about where your thermostat was purchased, contact your local Lennox Dealer or Lennox Customer Support for guidance. They can help review your situation and discuss next steps.

Why are some S40 thermostats sold at much lower prices online?

Prices that are significantly below normal market value are often a warning sign. These listings may involve stolen products.

How can I protect myself when buying Lennox products?

To ensure full support and peace of mind, always purchase Lennox products through a local Lennox Dealer. If a deal seems unusually low or unclear, it’s best to verify before buying.

Who should I contact if I have questions or concerns?

Please contact your local Lennox Dealer or Lennox Customer Support.