The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2026
Filed:
Apr. 12, 2023
Lennox Industries Inc., Richardson, TX (US);
Payam Delgoshaei, Addison, TX (US);
Sridhar Venkatesh, Irving, TX (US);
Eric Berg, The Colony, TX (US);
Lennox Industries Inc., Richardson, TX (US);
Abstract
A method for heating, ventilation, and air conditioning (HVAC) system diagnostics includes, in response to determining that a triggering event has occurred, entering a filter diagnostics mode. A first instruction is sent to a thermostat to shut down an HVAC system. A user is instructed to locate and remove a filter. The filter is classified as acceptable or dirty. In response to classifying the filter as acceptable, the user is instructed to the turn on the HVAC system. In response to determining based on the triggering event that a desired mode is a cooling mode, a first value of a room temperature is determined. The user is instructed to set a temperature setpoint below the first value. A second value of the room temperature is determined. In response to determining that the second value is less than the first value, it is determined that the HVAC system operates properly.