®The new Dave Lennox Signature Collection SLP99VK Gas Furnace achieves up to 99% efficiency and includes an integrated Refrigerant Detection System (RDS). ® DALLAS, Jan. 8, 2026 /PRNewswire/ -- Lennox Residential HVAC, a leader in energy-efficient home comfort solutions, announced today the release of the Dave Lennox Signature SLP99VK Gas Furnace, designed to deliver high-efficiency heating with built-in refrigerant detection capability. The SLP99VK is integrated with a Refrigerant Detection System (RDS), e ...