Smart Thermostats

What Is a Smart Communicating Thermostat?

A smart communicating thermostat is the next evolution of home climate control. Unlike a basic programmable thermostat that simply tells your heating and cooling system when to turn on and off, a smart communicating thermostat talks two-way with your HVAC equipment in real time, constantly exchanging information about temperature, humidity, air quality, and system performance to keep your home perfectly comfortable.

The Lennox S40 puts precise, app-connected comfort control on your wall and in your hand.

How It Works

Sensors built into your heating and cooling equipment continuously share data with the thermostat. The thermostat uses that information to make small, intelligent adjustments throughout the day, fine-tuning fan speed, runtime, and humidity to maintain the exact comfort level you want, while using only the energy your home actually needs.

The result: a home that holds steady at your target temperature, lower utility bills, and the ability to control everything from your phone, whether you're upstairs or out of state.

What Makes “Smart” Actually Smart

Today's leading smart thermostats go far beyond Wi-Fi connectivity. They learn your routine, sense when you've left the house, and adapt automatically to your schedule. They monitor outdoor air quality and pollen levels and can clean your indoor air before it becomes a problem. They even diagnose system issues and alert your service technician before a small problem becomes an expensive repair.

Why Choose a Smart Thermostat?

• Precise comfort, automatically: Smart communicating thermostats hold your home's temperature within 0.5° of your set point, so you feel consistent comfort in every room instead of the temperature swings you get with older thermostats. Feels Like technology factors in humidity along with temperature to deliver the comfort you actually want, not just the number on the screen.
  

A modern smart thermostat puts whole-home comfort control right at your fingertips.

• Real energy savings: Heating and cooling make up nearly half of the average household's energy bill. A smart communicating thermostat learns when you're home, when you're away, and when you're asleep, and automatically adjusts to save energy when full comfort isn't needed. GPS-based Smart Away mode detects when you leave the house and shifts your system to an efficient setting, then restores comfort right before you return.
• Cleaner indoor air: Premium smart thermostats monitor outdoor air quality and pollen levels by zip code. When outdoor pollutants spike, the system automatically circulates your indoor air through your filter, protecting your family without you having to think about it.
• Total control from anywhere: Adjust temperature, view energy reports, and check on your system from your phone, tablet, or voice assistant, whether you're in the kitchen or across the country. The best smart thermostats integrate with Amazon Alexa, Google Assistant, and Apple HomeKit, so your HVAC becomes part of your whole connected home.
• Proactive maintenance alerts. Because the thermostat is in constant communication with your equipment, it can detect issues early and even share diagnostics directly with your service technician. That means fewer unexpected breakdowns, fewer service calls, and a longer life for the equipment you've invested in.

Why Choose Smart Thermostat Installation?

• Expert installation, done right the first time: Smart communicating thermostats only deliver their full benefits when they're paired correctly with your HVAC system and properly configured. Our certified technicians have installed and serviced thousands of smart thermostats across Chicagoland. We know the equipment, the wiring, the home integrations, and the most common pitfalls, so you get a system that works exactly as promised from day one.
• Compatible with your existing system: Not every home is ready for a smart thermostat without a few adjustments. We assess your current setup, identify compatibility considerations, and recommend the right thermostat for your specific equipment, whether you have a brand-new variable-speed system or a furnace that's been running reliably for 15 years.
• Local support when you need it: Because we're your local Chicagoland HVAC partner, not a national call center, we can remotely diagnose issues, push software updates, and resolve most problems without ever needing to come to your home. When an on-site visit is required, we're nearby and responsive.
• Ongoing peace of mind: With the TOPTEC Home Care Club®, your smart thermostat and HVAC system are covered with priority service, regular maintenance, and member savings on parts and repairs. We monitor, you relax.

Ready to Upgrade Your Home's Comfort?

Get a free, no-obligation consultation from TOPTEC's certified technicians. We'll help you choose the right smart thermostat for your home and HVAC system, and provide a clear, upfront installation quote.

TOPTEC Is a Lennox Premier Dealer

As a Lennox Premier Dealer, TOPTEC is certified to install and service the full Lennox smart thermostat lineup. At the top sits the Lennox S40, the flagship communicating thermostat and the command center for a Lennox Ultimate Comfort System™, built to work with premium Lennox communicating, variable-capacity equipment.

The Lennox S40 smart thermostat, shown with the companion sensors that fine-tune comfort room by room.

For homes with other types of systems, the newer Lennox E40 is a universally compatible smart thermostat that brings many of the same advanced features to virtually any brand of multi-stage equipment, and it's ENERGY STAR® certified. The compact Lennox M40 is a great fit for smaller or simpler setups.



A note on compatibility: the S40 is designed specifically for premium Lennox communicating equipment, so if your home has a non-Lennox or non-communicating system, the E40 or M40 is usually the right path. During your consultation, our team will assess your existing equipment and recommend the model that's truly best for your home, whether that's the S40, E40, M40, or another option.