Professional installation of Nest, Ecobee, Honeywell & all major smart thermostats with same-day service and expert WiFi setup
Upgrade your home comfort with professional smart thermostat installation from LEX Air Conditioning. Since 2004, we've helped thousands of homeowners across the DFW metroplex take control of their heating and cooling with cutting-edge smart thermostats from Nest, Ecobee, Honeywell, and Trane.
Texas summers and winters demand precision climate control. Our NATE-certified technicians ensure proper installation, C-wire setup, WiFi connectivity, and full configuration of all smart features including voice control, geofencing, and energy-saving schedules customized for your lifestyle.
Comprehensive installation and support for all thermostat types.
Professional installation of WiFi-enabled thermostats from Nest, Ecobee, Honeywell, and more. Includes C-wire verification, WiFi setup, and complete feature configuration.
Replace outdated manual or programmable thermostats with modern smart models. We handle all wiring, compatibility checks, and power adapter installation.
Install multiple smart thermostats for zoned HVAC systems, allowing independent temperature control for different areas of your home.
Diagnose and repair issues including blank screens, connectivity problems, incorrect readings, and wiring faults for all thermostat brands.
Professional C-wire installation for smart thermostats requiring continuous power. No expensive rewiring needed in most cases.
Configure your thermostat with Alexa, Google Assistant, Apple HomeKit, and other platforms. Voice control and automation setup included.
Nest Learning Thermostat learns your schedule automatically and adjusts temperatures based on weather and occupancy. Includes Nest Thermostat, Nest E, and budget models.
Ecobee SmartThermostat includes remote room sensor and Alexa built-in. SmartSensor technology ensures balanced temperatures throughout your home.
Honeywell T-Series offers professional-grade features with T9 and T10 Pro models including remote sensors and Total Connect Comfort app control.
Trane ComfortLink II provides advanced control for Trane systems with zoning capability, humidity control, and air quality monitoring.
Carrier Infinity & Côr offer advanced features including Infinity control for variable-speed systems and weather forecasting integration.
Lennox iComfort S30 features large touchscreen display, Alexa integration, and Schedule IQ technology that learns your preferences.
Is your current thermostat costing you money? Watch for these warning signs.
If your thermostat displays 72°F but your home feels like 78°F, the internal sensor may be failing. This causes inefficient operation and wasted energy.
Some rooms too hot while others are too cold? Smart thermostats with remote sensors measure temperature in multiple locations for balanced comfort.
Energy bills climbing despite normal usage? Smart thermostats optimize runtime based on occupancy and weather, reducing waste by 10-23%.
Coming home to a hot house after vacation? Smart thermostats let you adjust temperature from anywhere using your smartphone.
Technology has advanced dramatically. If your thermostat is more than 10 years old, you're missing smart features and better efficiency that pay for themselves.
Constantly replacing batteries? Blank screen? Smart thermostats with C-wire power provide reliable operation without battery changes.
Ready to upgrade? Get same-day installation and start saving on energy costs.
Call for Same-Day ServiceWhat to expect when you choose LEX for your thermostat upgrade.
We inspect your current wiring, HVAC equipment, and electrical system to verify compatibility with your chosen smart thermostat. We identify if C-wire installation is needed upfront.
Our NATE-certified technicians carefully remove your old thermostat, install your new smart thermostat, and set up C-wire power if needed—most installs don't require expensive rewiring.
We test all heating and cooling functions, verify WiFi connectivity, calibrate temperature sensors, and test advanced features like humidity control or zoning.
We connect to your home WiFi, configure the mobile app, set up voice control if desired, create schedules, and train you on all features. We don't leave until you're comfortable.
Most installations completed in 1-2 hours with same-day appointments available. Call by noon for same-day service in most DFW areas.
Know the exact cost before we start work. No hidden fees or surprises—just honest, transparent pricing you can trust.
Factory-trained on all major thermostat brands with expertise in smart home integration, C-wire installation, and WiFi troubleshooting.
If your system needs a C-wire for smart thermostat power, we'll install it correctly the first time without expensive rewiring in most cases.
We verify your HVAC system works with your chosen thermostat before installation. All major systems supported including heat pumps and dual-fuel.
We're not a franchise or big corporation. We're your neighbors, serving DFW families with 2,000+ five-star reviews for 22+ years.
"We upgraded to a Nest thermostat and LEX handled everything perfectly. The technician took time to explain all the features and even set up voice control with our Alexa. Our energy bills have already dropped noticeably. Highly recommend!"— Michael R., Plano, TX
We believe in transparent pricing. While every installation is different, here's what you can expect:
*Prices include labor, testing, WiFi setup, and training. Thermostat hardware sold separately. All installations include 1-year workmanship warranty.
Every home is different. Call us for a free assessment and upfront quote—no obligation, no surprises.
(972) 466-1917Financing available with approved credit
Thermostats like Nest and Ecobee learn your schedule over 1-2 weeks and create automatic schedules that reduce runtime when you're away or asleep.
Uses your smartphone's location to detect when you're leaving or approaching home, automatically adjusting temperature for comfort and savings.
Track heating and cooling usage by day, week, or month. See exactly how much energy you're using and get personalized tips to reduce consumption.
Smart thermostats monitor outdoor temperature and weather forecasts to optimize heating and cooling cycles, pre-cooling on hot days or adjusting for cold fronts.
Measure temperature in multiple rooms (Ecobee, Honeywell T9) to focus comfort where you are instead of where the thermostat is located.
According to Energy Star, smart thermostats save an average of $180 per year on heating and cooling costs in Texas—often 10-23% reduction.
Our technicians are trained to work on all major smart thermostat brands.
Don't see your brand? We service all makes and models. Call us to confirm compatibility.
We provide thermostat installation throughout the Dallas-Fort Worth metroplex with fast response from our Plano headquarters.
Response Time: 30-40 minutes from our Plano headquarters • Service Area: All of Dallas, Collin, and Denton counties
We offer complete home comfort solutions for your entire system.
Most smart thermostats (Nest, Ecobee, Honeywell) require a C-wire for continuous power. If your current thermostat doesn't have a C-wire, you have three options: (1) install a power adapter at the furnace (included with many thermostats), (2) run a new C-wire from the furnace to the thermostat, or (3) choose a battery-powered smart thermostat like Honeywell T5. LEX Air can assess your wiring and recommend the best solution—most installations don't require expensive rewiring.
According to Energy Star, smart thermostats save an average of $180 per year on heating and cooling costs in Texas. The exact savings depend on your current usage habits, home insulation, and HVAC system efficiency. Homes that previously had manual thermostats or left systems running 24/7 see the biggest savings (20-30%). Even upgrading from a basic programmable thermostat typically saves 10-15% through better optimization and automatic schedule adjustments.
Most smart thermostat installations take 1-2 hours including removal of old thermostat, wiring, installation, WiFi setup, and training. If C-wire installation is needed, add 30-60 minutes. Multi-zone installations or complex system configurations may take 2-3 hours. LEX Air offers same-day installation appointments—call by noon for same-day service in most DFW areas.
Smart thermostats are compatible with most HVAC systems including gas furnaces, electric heat pumps, dual-fuel systems, and multi-stage equipment. They work with single-stage, two-stage, and variable-speed systems. Some specialized systems like boilers, high-voltage baseboard heaters (120V/240V), or proprietary systems may have limited compatibility. LEX Air will verify compatibility during our assessment and recommend the best thermostat for your specific system.
While DIY installation is possible if you have existing C-wire and compatible HVAC wiring, professional installation ensures proper configuration and avoids common mistakes like reversed wiring (which can damage equipment), incorrect system settings, or WiFi connectivity issues. LEX Air installation includes verification of compatibility, proper C-wire setup if needed, system testing, app configuration, and training on all features. Many homeowners who attempted DIY installation call us to fix issues—it's worth doing it right the first time.
Both are excellent smart thermostats with similar energy-saving features, but there are key differences: Nest uses auto-learning (learns your schedule without programming), has a sleek circular design, and integrates best with Google smart home devices. Ecobee includes a remote room sensor (Nest charges $40 extra), has Alexa built-in for voice control, and offers more manual scheduling control. Nest is ideal if you want hands-off automation, while Ecobee is better if you want room sensors included and prefer Amazon Alexa over Google Assistant.
Professional installation with same-day service available. Call today or schedule online.
Serving DFW since 2004 • 2,000+ 5-Star Reviews • Licensed & Insured
