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:
Mar. 31, 2026
Filed:
Jan. 12, 2024
Lennox Industries Inc., Richardson, TX (US);
Vickey Bhardwaj, Kancheepuram, IN;
Sangameshwaran Sadhasivam, Kanchipuram, IN;
Patric Ananda Balan Thobias, Chennai, IN;
Lennox Industries Inc., Richardson, TX (US);
Abstract
A method operating an HVAC system is provided. The method includes receiving a concentration of refrigerant. The method includes operating the HVAC system in a leak diagnostic mode if the concentration exceeds a gas concentration threshold. The method includes receiving a first suction pressure of the refrigerant while the first compressor is turned off. The method includes waiting for a duration and receiving a second suction pressure of the refrigerant while the compressor is turned off. The method includes determining that a first refrigerant circuit includes a refrigerant leak if a difference between the first suction pressure and the second suction pressure exceeds a suction pressure threshold value.