Chicago's Authorized Lennox dealer Since 2010 | D's Air & Heating
D's Air & Heating is an Authorized Lennox dealer serving Chicago since 2010, providing expert Lennox installation, repair, maintenance, and replacement services throughout Chicago and the surrounding communities.
Lennox Smart Zoning
Systems & Components
Stop heating and cooling rooms you're not using. Lennox Smart Zoning divides your Chicago home into separate comfort zones — sending conditioned air only where it's needed.
IL License #2183457 · D's Air & Heating, Inc. · Chicago, IL · No Contracts
What Is Smart Zoning?
A zoning system divides your home into separate temperature zones, each controlled independently. Instead of heating or cooling your entire home to one temperature, you can set different temperatures for different areas — keeping bedrooms cooler at night, warming the living room in the morning, and ignoring unused spaces entirely. The result is improved comfort and lower energy bills.
Lennox Smart Zoning System
Formerly iHarmony — the brain of your Lennox zoning system
The Lennox Smart Zoning System (formerly iHarmony) is the central controller for a Lennox zoning installation. It coordinates up to 4 independent zones, manages damper positions, and communicates with your Lennox equipment and S40 thermostat to deliver precise, efficient comfort throughout your home.
- Controls up to 4 independent comfort zones
- Fully communicating — integrates with iComfort and S40 thermostat
- Coordinates damper positions with system operation
- Prevents pressure buildup with bypass damper control
- Works with variable-speed and two-stage Lennox equipment
- Reduces energy use by conditioning only occupied zones
Damper Control Module (DCM) — 10C16
Controls motorized dampers in each zone
The Lennox Damper Control Module (DCM) 10C16 controls the motorized dampers in each zone of your zoning system. One DCM is installed per zone branch, communicating with the Smart Zoning System controller to open and close dampers based on each zone's demand.
- Controls motorized dampers to open and close each zone
- One DCM per zone branch
- Communicates with the Smart Zoning System controller
- 24V operation — compatible with standard HVAC wiring
- Precise damper positioning for accurate zone control
- Required for each zone in a Smart Zoning installation
Zone Sensor — 17A30
Temperature sensor for each zone
The Lennox Zone Sensor 17A30 monitors the temperature in each zone of your zoning system. Installed on the wall in each zone, it reports local temperature to the Smart Zoning System controller so each zone can be conditioned independently.
- Monitors temperature in each zone independently
- Wall-mounted in each zone for accurate local readings
- Communicates zone temperature to the Smart Zoning controller
- Low-voltage wiring — easy installation
- Required for each zone in a Smart Zoning installation
- Works with the Smart Zoning System and DCM modules
Discharge Air Temperature Sensor — X2658
Monitors supply air temperature to protect equipment
The Lennox Discharge Air Temperature Sensor X2658 monitors the temperature of supply air leaving the system. It's a required component in Smart Zoning installations — it prevents the AC coil from freezing or the furnace heat exchanger from overheating when multiple zones are closed and airflow is restricted.
- Monitors supply air temperature in the plenum
- Prevents freezing (AC) or overheating (furnace) from low airflow
- Required for proper Smart Zoning system operation
- Installed in the supply plenum near the air handler or furnace
- Protects equipment when multiple zones are closed simultaneously
- Works with the Smart Zoning System controller
Zoning Accessories & Transformers
High Pressure Switch — 27W13
Required for heat pump zoning installations — prevents high-pressure faults when zones close
Transformer — 10P17
40VA transformer for Smart Zoning system power
Transformer — 10P87
75VA transformer for larger Smart Zoning installations
Transformer — 12P61
Transformer for specific Smart Zoning configurations
Ready to Zone Your Chicago Home?
D's Air & Heating, Inc. · (773) 940-0965 · dsairheating@gmail.com · IL License #2183457
Why Chicago Homeowners Trust D's Air & Heating
Licensed & Insured
IL License #2183457
Serving Chicago
Since 2009
Authorized Dealer
Multiple Brands
No Contracts
Ever — Guaranteed
Permit Pulled
Every Installation
Professional Standards
Code-Compliant Work
EPA Certified
Mainstream Engineering
R-410A Certified
Mainstream Engineering
Why Choose D's Air & Heating, Inc.?
Chicago's trusted HVAC company since 2009 — licensed, insured, and committed to honest workmanship on every job.
Experience Since 2009
D's Air & Heating has served Chicago homeowners and businesses since 2009. Over 15 years of local HVAC experience means we've seen every type of system, every Chicago building configuration, and every challenge the city's climate presents.
Manufacturer-Trained Technicians
Our technicians receive ongoing manufacturer training and certification. We install Lennox, Goodman, Amana, Daikin, Sinclair, Weil-McLain, Peerless, and other leading brands — and we know each system inside and out.
Licensed, Insured & Permitted
D's Air & Heating holds Illinois HVAC License #2183457 and carries full liability insurance. We pull City of Chicago permits on every installation — protecting you legally and ensuring the work meets code.
Honest Recommendations
We tell you what you need — not what generates the highest invoice. If your system can be repaired cost-effectively, we'll say so. If replacement makes more sense, we'll explain exactly why. No pressure, no upselling.
Local Chicago Expertise
We know Chicago's housing stock — two-flats, greystones, bungalows, vintage buildings with steam heat, modern construction with forced air. We size and install equipment for the specific demands of Chicago homes and Chicago winters.
Long-Term Customer Support
Our relationship doesn't end at installation. We register your equipment for warranty, remain available for follow-up questions, and provide ongoing maintenance to keep your system running at peak efficiency for years.
Indoor Air Quality in Chicago — What Homeowners Should Know
Why Indoor Air Quality Matters
The EPA estimates that indoor air is 2–5 times more polluted than outdoor air. Chicago homes — especially older buildings with limited ventilation — accumulate dust, allergens, volatile organic compounds (VOCs), combustion byproducts, and biological contaminants. Modern HVAC systems can address all of these with the right equipment.
Air Filtration — MERV Ratings Explained
MERV (Minimum Efficiency Reporting Value) rates how effectively a filter captures particles. Standard 1-inch filters are MERV 1–4 and capture only large particles. MERV 8 filters capture most dust and pollen. MERV 13 filters capture fine particles including bacteria and smoke. High-efficiency media filters (MERV 13–16) provide hospital-grade filtration without restricting airflow.
Humidity Control
Chicago winters are extremely dry — indoor relative humidity can drop below 20% when it's cold outside. Low humidity causes dry skin, static electricity, wood shrinkage, and increased susceptibility to respiratory infections. A whole-home humidifier connected to your HVAC system maintains 35–45% relative humidity automatically. In summer, a whole-home dehumidifier prevents mold growth and improves comfort.
UV Air Purification
UV-C light systems installed in the air handler kill bacteria, viruses, and mold spores as air passes through. Lennox PureAir and similar systems combine UV-C with activated carbon filtration to address both biological contaminants and chemical pollutants (VOCs, odors). These systems are particularly valuable for households with allergy or asthma sufferers.
What to Expect From Your D's Air IAQ Installation
Assessment
We evaluate your current system, identify IAQ concerns, and recommend targeted solutions.
Equipment Selection
We recommend the right combination of filtration, humidification, and purification for your home.
Installation
Our technicians install IAQ equipment integrated with your existing HVAC system.
Airflow Verification
We measure static pressure and airflow after installation to confirm the system is not restricted.
Customer Training
We walk you through filter replacement schedules, humidity settings, and UV lamp replacement intervals.
Follow-Up
We remain available for questions and annual maintenance of your IAQ equipment.
D's Air IAQ Installation Standards
- IAQ assessment — identify specific pollutants and sources
- Filter upgrade recommendation based on system airflow capacity
- Humidifier sized to building volume and infiltration rate
- UV system positioned for maximum exposure of air stream
- ERV/HRV sized for building volume and occupancy
- All IAQ equipment integrated with existing HVAC controls
- Airflow verified after any filter upgrade — static pressure checked
- Equipment registered for full manufacturer warranty
What Our Customers Say
Based on Google Reviews — D's Air & Heating, Inc.
Marcus T.
Furnace Replacement
"D's Air & Heating did an outstanding job replacing my furnace. Darryl was professional, on time, and explained everything clearly. The installation was clean and the system works perfectly. Highly recommend."
Latoya W.
Boiler Repair
"Called D's Air when my boiler stopped working in January. They came out the same day, diagnosed the problem quickly, and had it running again within hours. Fair pricing and excellent service."
James R.
AC Installation
"Installed a new central AC system for us this summer. The crew was respectful of our home, cleaned up after themselves, and the system runs quietly and efficiently. Very satisfied."
Ready to Work With Chicago's Trusted HVAC Company?
D's Air & Heating, Inc. — Serving Chicago Since 2009. Licensed, Insured, No Contracts.
Why Choose Lennox?
D's Air & Heating is an Authorized Lennox dealer — Serving Chicago Since 2010.
Lennox products are recognized for advanced technology, quiet operation, exceptional efficiency ratings, and dependable performance in Chicago's demanding climate. Lennox systems are engineered for long-term reliability, comfort, and energy savings.
Why Choose D's Air & Heating?
D's Air & Heating is an Authorized Lennox dealer — Serving Chicago Since 2010.
Since 2010, our company has helped Chicago homeowners and businesses install and service Lennox equipment. We provide expert sizing, installation, startup, testing, maintenance, and long-term support for every Lennox product we install.
Lennox Smart Zoning Features
- Improved indoor air quality and comfort
- Removes allergens, dust, and contaminants
- Compatible with Lennox heating and cooling systems
- Smart controls and monitoring
- Lennox manufacturer warranty coverage
- Quiet, efficient operation
- Healthier home environment year-round
Professional Lennox Installation
Every installation includes equipment evaluation, proper system sizing, removal of existing equipment, professional installation, safety testing, airflow verification, and system commissioning to manufacturer standards. City of Chicago mechanical permits included on every installation.
Financing & Warranties
D's Air & Heating offers flexible financing options for qualified customers on all Lennox equipment installations. Ask about current Lennox rebates, manufacturer promotions, and seasonal offers available through our dealership.
- Lennox 10-Year Limited Parts Warranty — registered at installation
- Lennox 20-Year Heat Exchanger Warranty (select furnace models)
- 2-Year D's Air & Heating Workmanship Warranty
- Financing available for qualified customers — ask about current offers
- Current Lennox rebates and manufacturer promotions available
- No-contract service — no annual maintenance agreement required
Request Your Free Estimate
D's Air & Heating is an Authorized Lennox dealer — Serving Chicago Since 2010.
Contact D's Air & Heating today to schedule a free Lennox Smart Zoning installation estimate and discover why Chicago homeowners continue to choose Lennox for dependable comfort and efficiency.
(773) 940-0965