Professional air conditioner installation serving Stonebridge Ranch, Craig Ranch, Adriatica, and all McKinney neighborhoods. Our Plano-based team provides expert AC system installation with 15-20 minute response times throughout McKinney.
Trusted AC installation experts serving McKinney since 2004.
Fast response times to McKinney from our Plano headquarters.
Three generations of honest work since 2004.
Fully licensed, bonded, and background-checked technicians.
4.8-star average across Google, Facebook, and Yelp.
McKinney's rapid growth has transformed it from a charming historic town into one of North Texas's most desirable communities. From the master-planned neighborhoods of Stonebridge Ranch and Craig Ranch to the Mediterranean-inspired village of Adriatica and the beautifully preserved Historic Downtown, McKinney homes demand reliable cooling systems to handle brutal Texas summers. Whether you're building in one of McKinney's newer developments or replacing an aging system in an older home, proper AC installation is critical for comfort, efficiency, and long-term performance. Many McKinney homes built in the last 15-20 years are now facing their first major system replacement, while newer construction requires high-efficiency systems to meet modern building codes and homeowner expectations.
Based in nearby Plano, LEX Air Conditioning has been serving McKinney homeowners since 2004. Our technicians make the short 15-20 minute drive to all McKinney neighborhoods, providing expert air conditioning services with small-town responsiveness and big-company expertise. We hold Texas HVAC license TACLA38788C and maintain full insurance and bonding. When you choose LEX for your McKinney air conditioning needs, you're working with a family-owned company that's been building relationships throughout Collin County for over two decades. We understand McKinney's unique housing stock—from sprawling estates in Stonebridge Ranch to cozy historic homes downtown—and we size and install systems that match your home's specific requirements.
Our AC installation process goes far beyond simply swapping out equipment. We perform detailed Manual J load calculations to determine the exact cooling capacity your home requires, evaluate your ductwork for leaks and proper sizing, assess your electrical service to ensure it can handle modern high-efficiency equipment, and present you with multiple system options at different SEER ratings so you can choose the right balance of upfront cost and long-term energy savings. We install premium brands including Carrier, Trane, Lennox, and American Standard, and every installation includes proper refrigerant charging, thorough system testing, and a complete walkthrough so you understand your new equipment. We also offer flexible financing options to make high-efficiency systems accessible to more McKinney families, because we believe everyone deserves reliable comfort without breaking the bank.
Complete air conditioning installation solutions for every McKinney home
Full AC system replacement including outdoor condenser, indoor air handler or furnace, thermostat upgrade, and refrigerant line sets. We remove your old equipment, install the new system with proper sizing and load calculations, and ensure everything is tested and operating at peak efficiency before we leave your McKinney home.
Learn MoreUpgrade to a high-SEER air conditioner (16-20+ SEER) and dramatically reduce your summer cooling costs. Modern variable-speed and two-stage systems provide superior comfort, quieter operation, better humidity control, and significant energy savings—crucial for McKinney's long cooling season and high electricity costs.
Learn MoreBuilding a new home in Craig Ranch or another McKinney development? We work with builders and homeowners to design and install the perfect HVAC system for your floor plan. We ensure proper ductwork design, correct equipment sizing, and compliance with all current building codes and energy standards.
Learn MoreYour AC system is only as good as the ductwork delivering the air. We design and install properly sized duct systems for new installations, replace damaged or undersized ducts, seal leaks that waste energy, and ensure balanced airflow throughout your McKinney home for consistent comfort in every room.
Learn MoreMaximize your new AC system's efficiency with a smart thermostat installation. We install and configure WiFi thermostats from Nest, Ecobee, Honeywell, and other leading brands, allowing you to control your McKinney home's temperature from anywhere, create custom schedules, and track energy usage for optimal savings.
Learn MoreLarge McKinney homes in Stonebridge Ranch or multi-story layouts benefit enormously from zoned HVAC systems. We install zone dampers and multiple thermostats so you can control temperature independently in different areas, eliminating hot and cold spots while reducing energy waste in unused spaces.
Learn MoreNot sure if it's time to replace your air conditioner? Watch for these warning signs that indicate your McKinney home needs a new AC installation:
Air conditioners typically last 12-15 years in Texas heat. If your system is approaching or exceeding this age, you're likely spending more on repairs and energy costs than a new high-efficiency system would cost. Older systems also use R-22 refrigerant, which is now expensive and being phased out.
If your summer cooling costs keep climbing despite similar usage patterns, your AC system is losing efficiency. Modern systems use 30-50% less energy than units installed 10-15 years ago, meaning a new installation can pay for itself through energy savings over time.
The "5,000 rule" is a good guideline: multiply the repair cost by your system's age. If the result exceeds 5,000, replacement is usually the smarter financial choice. If you're calling for AC repairs multiple times per summer, it's time to consider a new system for your McKinney home.
Hot and cold spots, rooms that never get comfortable, or a system that runs constantly but can't maintain temperature indicate sizing problems, ductwork issues, or a failing compressor. A properly sized new AC installation will eliminate these comfort problems and provide consistent cooling.
Grinding, squealing, or banging noises from your outdoor condenser unit often indicate failing bearings, loose components, or compressor problems—all expensive repairs on aging equipment. New AC systems operate much more quietly, thanks to improved fan designs and sound-dampening technology.
If your McKinney home feels clammy or muggy even when the AC is running, your system may be oversized or failing to remove moisture properly. Modern variable-speed and two-stage systems provide superior dehumidification, improving comfort and indoor air quality while reducing that sticky feeling Texas summers bring.
"LEX installed a new Carrier AC system in our Stonebridge Ranch home after our 16-year-old unit finally died during a heat wave. They had someone here within 20 minutes to assess the situation, provided three different system options with clear pricing, and completed the installation the very next day. The new system is so much quieter and our electric bill dropped by almost $80 the first month. Highly recommend them to anyone in McKinney!"
We serve every neighborhood in McKinney.
ZIP Codes: 75069, 75070, 75071
We're based in Plano, just 15-20 minutes from McKinney, which allows us to respond quickly for consultations and typically complete installations within 1-3 days depending on system complexity and availability. For emergency replacements during heat waves, we prioritize McKinney customers and often have your new system running the same day or next day. Call us at (972) 466-1917 to discuss your timeline.
AC installation costs typically range from $5,500-$12,000+ depending on system size, SEER rating, brand, and installation complexity. A standard 3-ton 16-SEER system for an average McKinney home runs $6,500-$8,500 installed, while high-efficiency 18-20 SEER systems cost $8,500-$12,000+. We provide free in-home consultations with upfront pricing and offer flexible financing options to make installation affordable.
Proper sizing requires a Manual J load calculation that considers your home's square footage, insulation levels, window count and quality, ceiling height, and sun exposure. Most McKinney homes need 2.5-5 ton systems. Oversized systems short-cycle and waste energy while undersized systems run constantly and can't keep up with Texas heat. We perform detailed load calculations on every installation to ensure perfect sizing.
In McKinney's climate with long, hot summers and high electricity costs, higher SEER ratings (16-20+) typically pay for themselves within 5-8 years through energy savings. A 16-SEER system uses about 30% less electricity than an older 10-SEER unit, saving $50-100+ monthly. We help you analyze upfront costs versus long-term savings to find the right balance for your budget and home.
Yes! We offer flexible financing options with approved credit, including promotional periods with low or no interest. This allows McKinney homeowners to install high-efficiency systems without the full upfront cost, and your monthly financing payment is often less than your energy savings. Ask about current financing promotions when you call for your free consultation.
Yes. LEX holds Texas HVAC license TACLA38788C. All technicians are fully licensed, insured, and background-checked. We've been serving McKinney since 2004.
Call LEX today for fast, reliable service from your local experts.
