Complete AC solutions from DFW's most trusted HVAC company. Repair, installation, maintenance, and 24/7 emergency service — all backed by over 22 years of experience.
Licensed & Insured (TACLA38788C) • Same-Day Service • 100% Satisfaction Guaranteed • Financing Available
When Texas heat hits triple digits, you need an AC company you can count on. LEX Air Conditioning has been keeping Dallas-Fort Worth homes cool and comfortable for over 22 years. From emergency repairs to complete system installations, our licensed technicians (TACLA38788C) deliver expert service with upfront pricing and a 100% satisfaction guarantee.
We're not a national franchise — we're a local, family-owned business headquartered in Plano with deep roots in the DFW community. Our technicians live in these neighborhoods, understand the unique demands Texas heat puts on cooling systems, and take pride in providing the kind of service that has earned us over 2,000 five-star reviews.
Whether you need a quick repair to get through a heat wave, a new high-efficiency system to lower your energy bills, or a maintenance plan to prevent future breakdowns, LEX has you covered. We service all major brands, offer same-day appointments, and stand behind every job we do.
Complete cooling solutions for every need — from emergency repairs to new system installations.
Fast, reliable repairs for all AC brands. Same-day service available with 24/7 emergency response. Our technicians diagnose problems accurately and fix them right the first time — guaranteed.
Learn MoreExpert installation of new air conditioning systems. We help you choose the right size and efficiency for your home, handle permits, and ensure proper setup for optimal performance and warranty protection.
Learn MoreTime to upgrade? We'll help you select a new high-efficiency system, remove your old unit, and install your new AC with minimal disruption. Financing available for qualified buyers.
Learn MorePreventive maintenance that catches small problems before they become expensive repairs. Our comprehensive tune-ups improve efficiency, extend system life, and keep your warranty valid.
Learn MorePerfect for room additions, garages, or homes without ductwork. Mini-splits offer zone control, high efficiency, and flexible installation options. We install and service all major brands.
Learn MoreUpgrade to a smart or programmable thermostat for better comfort and lower energy bills. We install Nest, Ecobee, Honeywell, and more — properly configured for your specific system.
Learn MoreLooking for heating services? We also offer furnace repair, heat pump service, and indoor air quality solutions.
What sets us apart from other air conditioning companies in Dallas-Fort Worth.
Don't wait until your system fails completely. Watch for these warning signs.
If your AC runs but only blows warm or lukewarm air, you may have a refrigerant leak, compressor issue, or frozen coils.
Grinding, squealing, banging, or rattling sounds indicate mechanical problems that will worsen without repair.
Water pooling around your indoor unit signals a clogged drain line, cracked pan, or frozen evaporator coil.
A sudden spike in electricity costs often means your AC is working harder than it should due to underlying issues.
Short cycling — turning on and off repeatedly — wastes energy and indicates thermostat, refrigerant, or electrical problems.
Musty smells suggest mold growth; burning odors could indicate electrical issues that pose a fire hazard.
Early intervention prevents minor issues from becoming major expenses. Call now for same-day diagnosis.
(972) 466-1917Factory-trained technicians experienced with all major air conditioning brands.
As a Trane Comfort Specialist, we receive advanced training and access to the full Trane product line. But we service and install all brands — whatever's best for your home and budget.
"We've used LEX for everything — AC repairs, a complete system replacement, and now we're on their maintenance plan. Every single experience has been fantastic. The technicians are knowledgeable and respectful, the pricing is always fair, and they stand behind their work. After trying other companies over the years, LEX is the only one we trust with our home."— Robert & Susan K., Frisco, TX
The best way to avoid emergency AC repairs is regular preventive maintenance. Our Cool Club membership includes everything your system needs to run efficiently and reliably year after year.
Regular tune-ups catch small problems before they leave you without AC on the hottest day of summer.
Starting at just $14/month
Same-day AC service throughout the Dallas-Fort Worth metroplex.
With our headquarters in Plano and technicians positioned across DFW, we deliver fast response times throughout Collin, Dallas, Denton, and Tarrant counties.
Not sure if we service your area? Call (972) 466-1917 — we cover the entire metroplex.
Common questions about AC services in Dallas-Fort Worth.
We recommend professional AC maintenance at least once a year, ideally in spring before the cooling season begins. This tune-up includes cleaning coils, checking refrigerant levels, inspecting electrical connections, lubricating moving parts, and testing overall system performance. Regular maintenance prevents 95% of breakdowns, improves efficiency, and extends your system's lifespan. Our Cool Club members receive two tune-ups per year — one for AC in spring and one for heating in fall.
In the Dallas-Fort Worth area, air conditioning systems typically last 12-15 years with proper maintenance. Texas heat puts more stress on cooling systems than milder climates, so systems here often have shorter lifespans than the national average. Factors affecting longevity include maintenance frequency, quality of installation, system quality, and how hard the system works (home insulation, sun exposure, etc.). Well-maintained premium systems can last 18-20 years, while neglected systems may fail in 8-10 years.
Proper AC sizing requires a professional load calculation that considers your home's square footage, insulation, windows, orientation, ceiling height, and other factors. An undersized system won't cool adequately; an oversized system short-cycles, wastes energy, and fails to dehumidify properly. As a rough guide, most DFW homes need 1 ton of cooling capacity per 500-600 square feet, but this varies significantly. Our technicians perform Manual J load calculations to ensure you get the right size system for optimal comfort and efficiency.
New AC system costs in DFW typically range from $5,000-$15,000+ depending on system size, efficiency rating (SEER), brand, and installation complexity. Basic single-stage systems start around $5,000-$7,000, while high-efficiency variable-speed systems can exceed $12,000-$15,000. The investment pays off through lower energy bills, fewer repairs, better comfort, and increased home value. We offer financing options to make upgrades affordable, and we'll always provide multiple options at different price points.
SEER (Seasonal Energy Efficiency Ratio) measures AC efficiency — higher numbers mean greater efficiency. As of January 2023, the industry transitioned to SEER2, which uses updated testing procedures that better reflect real-world conditions. SEER2 ratings appear about 4-5% lower than equivalent SEER ratings due to the stricter testing, not because systems are less efficient. The current minimum in Texas is 14.3 SEER2 (equivalent to 15 SEER). Higher-efficiency systems (18+ SEER2) cost more upfront but save significantly on energy bills over time.
Yes, we provide 24/7 emergency AC service throughout the Dallas-Fort Worth metroplex. We understand that AC failures don't wait for business hours, especially during brutal Texas summers. When you call our emergency line, we prioritize dispatch to get you cool as quickly as possible. Emergency service is available nights, weekends, and holidays. Response times vary by location and demand, but we typically arrive within 1-2 hours for true emergencies.
Consider replacement if: your system is 12-15+ years old, repair costs exceed 50% of replacement value, you're facing frequent breakdowns, your energy bills keep rising, or the system uses R-22 refrigerant (phased out and expensive). Consider repair if: the system is under 10 years old, the repair is relatively minor, and the system has been well-maintained. Our technicians provide honest recommendations based on your specific situation — we never push unnecessary replacements.
Homeowners can take several steps: change air filters monthly during cooling season (or per manufacturer recommendation), keep outdoor units clear of debris and vegetation (2+ feet clearance), ensure vents aren't blocked by furniture or curtains, keep blinds closed during peak sun hours, maintain consistent thermostat settings, and schedule professional maintenance annually. These simple practices reduce strain on your system, lower energy bills, and help prevent breakdowns.
Real reviews from DFW homeowners.
"LEX installed our new Trane system three years ago and has maintained it ever since. The installation crew was professional and thorough, and the system has performed flawlessly. Their Cool Club maintenance keeps everything running perfectly. Highly recommend!"
— Amanda P., Plano, TX"Called on a Sunday afternoon when our AC stopped working. They had a technician here within an hour, diagnosed the problem quickly, and had us cooling again before dinner. Fair price, great service, no hassle. This is how every company should operate."
— James M., McKinney, TX"After bad experiences with other HVAC companies, LEX restored my faith. They were honest about what my 12-year-old system needed, didn't try to upsell me on a new unit, and the repair has held up perfectly for two years now. Genuine integrity."
— Patricia L., Richardson, TXFrom repairs to installations, maintenance to emergencies — LEX has you covered. Call now for same-day service across DFW.
Serving DFW Since 2004 • 2,000+ 5-Star Reviews • Licensed & Insured (TACLA38788C)