Lennox Authorized dealer — Serving Chicago Since 2010

Lennox International has been manufacturing HVAC equipment in the United States since 1895. Their product line spans from entry-level Merit series equipment to the ultra-premium Dave Lennox Signature Collection, which includes the SLP99V furnace — the most efficient gas furnace available at 99% AFUE.

D's Air & Heating, Inc. holds Lennox Premier dealer status — the highest tier in the Lennox dealer program. Premier dealers are required to meet Lennox's standards for installation quality, technical training, and customer satisfaction. This status gives us access to the full Lennox product catalog, priority technical support, and Lennox promotional financing programs.

Chicago's climate demands the best in heating and cooling equipment. Lennox's variable-capacity furnaces and inverter-driven heat pumps are engineered to maintain precise indoor temperatures even during Chicago's polar vortex winters and humid summers.

The Lennox product line is organized into three tiers: the Dave Lennox Signature Collection (top tier, variable-capacity, highest efficiency), the Elite Series (mid-tier, two-stage, high efficiency), and the Merit Series (entry-level, single-stage, standard efficiency). Each tier offers a complete system — furnace, condenser, air handler, and thermostat — designed to work together for optimal efficiency ratings.

Lennox's iComfort S30 and M30 smart thermostats integrate with Lennox equipment for whole-home comfort control, including zoning, humidity management, and air quality monitoring. The iComfort platform also provides remote diagnostics, allowing us to identify issues before they become failures.

All Lennox installations include proper sizing using Manual J load calculations, refrigerant charge verification, startup commissioning, and warranty registration. We also offer Lennox annual maintenance plans.