Professional AC Installation in Dallas-Fort Worth
Installing a new air conditioning system is one of the most significant investments you'll make in your home's comfort. Get it wrong — wrong size, wrong brand, wrong installation — and you'll be paying for that mistake in higher energy bills and repair calls for years to come. Get it right, and a properly installed, high-efficiency system will keep your home cool and comfortable for 15–20 years with minimal maintenance. Not sure your current system has reached the end of the road? Check out our guide on signs your AC needs repair before committing to a replacement.
At LEX, we've been installing AC systems across the Dallas-Fort Worth Metroplex since 2004. As Certified Trane Comfort Specialists, our technicians are trained to the highest standard in the industry — and we back every installation with our white glove commitment from the first call to the final walkthrough.
Not sure if you need a repair or a full replacement? Our AC repair team can diagnose your current system and give you an honest recommendation. Read our AC repair vs. replacement guide if you want to think it through first — then call us when you're ready.
Types of AC Systems We Install
Every home is different. We install all major AC system types and help you choose the right solution for your home's layout, budget, and long-term efficiency goals.
Central Air Conditioning
The most common system type in DFW. A central AC system uses your home's existing ductwork to cool every room efficiently from a single outdoor unit and indoor air handler.
Best For: Ducted HomesHeat Pump Systems
Heat pumps provide both heating and cooling in a single, highly efficient system. Ideal for DFW's mild winters and hot summers — and they can cut your energy costs significantly year-round.
Best For: Year-Round EfficiencyDuctless Mini-Split
No ductwork? No problem. Mini-splits provide zoned comfort to individual rooms or additions without requiring duct installation. Also great for garages, sunrooms, and home offices.
Best For: No DuctworkPackaged Systems
All components in a single outdoor unit — ideal for homes without a dedicated indoor mechanical space. Common in older DFW homes and properties with slab foundations.
Best For: Limited Indoor SpaceNot sure which system type is right for your home? Our Comfort Advisors will evaluate your home during a free in-home estimate and walk you through your options with honest, no-pressure recommendations.
What SEER2 Rating Should You Choose?
SEER2 (Seasonal Energy Efficiency Ratio) measures how efficiently an AC system cools your home. Higher SEER2 = lower energy bills — but also a higher upfront cost. For most DFW homeowners, the sweet spot is 16–18 SEER2, where the energy savings justify the investment within a reasonable payback period.
| SEER2 Rating | Efficiency Level | Best For | Notes |
|---|---|---|---|
| 14–15 SEER2 | Standard | Budget-conscious installs | Meets minimum federal requirements |
| 16–18 SEER2 | High Efficiency | Most DFW homeowners | ★ Recommended for DFW |
| 20–22 SEER2 | Premium | Long-term homeowners | Best payback over 10+ years |
| 24+ SEER2 | Ultra Premium | Maximum efficiency goals | Variable-speed technology |
Use our SEER Savings Calculator to see exactly how much you could save by upgrading from your current system to a higher-efficiency model. The numbers might surprise you — many DFW homes still running 8–10 SEER systems are spending twice what they should on cooling every summer.
Our AC Installation Process
We've installed thousands of AC systems across the Metroplex. Here's exactly what to expect when you work with LEX:
Free In-Home Estimate
A LEX Comfort Advisor visits your home to perform a Manual J load calculation — the industry-standard method for properly sizing an AC system. We measure your home, assess insulation, window placement, and sun exposure to determine the exact system size you need. No guessing.
Upfront Quote — No Surprises
You'll receive a complete, itemized quote before we schedule anything. The price includes equipment, labor, permits, and any necessary ductwork modifications. What we quote is what you pay — guaranteed.
Installation Day
Our certified install crew arrives on time, puts down drop cloths and shoe covers, and gets to work. Most standard installations are complete in a single day. We handle all permits, inspections, and code compliance so you don't have to.
System Startup & Testing
Before we leave, we run a complete system test — checking refrigerant charge, airflow, electrical connections, and thermostat calibration. We won't sign off until every reading is dialed in perfectly.
Walkthrough & Warranty Registration
We walk you through your new system, show you how to use the thermostat, and register your warranty on your behalf. We also clean up completely — you'll barely know we were there.
Why Proper Sizing Matters
One of the most common mistakes we see — even from other HVAC companies — is installing an oversized AC system. It seems like bigger would be better, but an oversized system short-cycles: it cools the air too quickly, shuts off before removing enough humidity, and restarts repeatedly. The result is a home that feels clammy, a system that wears out faster, and energy bills that never get as low as they should.
Undersized systems have the opposite problem — they run constantly, can't keep up on the hottest days, and drive up your electricity bill trying to reach a temperature they can never hit.
The LEX standard: Every installation starts with a Manual J load calculation. It's the only accurate way to size a system for your specific home, and it's the standard we hold ourselves to on every job — no shortcuts.
Financing Options
A new AC system is a significant investment. LEX offers flexible financing options — including 0% interest plans with approved credit* — so you can get the system your home deserves without the financial strain of paying it all upfront.
Ask your Comfort Advisor about current financing promotions during your free estimate, or visit our financing page for more information.
*With approved credit. Ask for details.
Protect Your Investment with a Maintenance Plan
A new AC system is only as good as the maintenance it receives. Our Cool Club Maintenance Plan includes annual precision tune-ups, priority scheduling, and member-only discounts — everything you need to keep your new system running at peak efficiency for years to come. Most manufacturers also require regular maintenance to keep your warranty valid.
Related Services
LEX handles everything your home's comfort system needs — before and after installation:
Frequently Asked Questions
Most standard central AC installations take 4–8 hours in a single day. Full system replacements including a new air handler typically take 6–8 hours. Complex installations, new construction rough-ins, or jobs requiring ductwork modifications may require additional time. Your Comfort Advisor will give you a realistic timeline during your free estimate.
AC sizing depends on your home's square footage, insulation levels, ceiling height, window placement, orientation, and local climate. A LEX Comfort Advisor will perform a Manual J load calculation during your free estimate — the only accurate method for sizing a system to your specific home. Oversizing or undersizing leads to efficiency, comfort, and reliability problems.
AC installation costs in the Dallas-Fort Worth area typically range from $3,500 to $10,000+ depending on system size, equipment brand, efficiency rating (SEER2), and whether ductwork modifications are needed. If you're weighing repair against replacement, our AC repair cost guide breaks down what repairs typically run so you can compare. LEX provides free in-home estimates with complete, itemized, upfront pricing before any work begins. We also offer flexible financing with approved credit.
For DFW's climate, a 16–18 SEER2 system offers the best balance of upfront cost and long-term energy savings for most homeowners. Higher SEER2 systems (20+) make sense if you run your AC heavily or plan to stay in your home long-term. Use our SEER Savings Calculator to compare the numbers for your situation.
Yes. LEX offers flexible financing options including low-interest financing options with approved credit. Ask your Comfort Advisor about current promotions during your free estimate, or visit our financing page for details.
Not necessarily. If your existing ductwork is in good condition and properly sized, it can typically be reused with a new system. However, if your ducts are leaking, damaged, undersized, or more than 15–20 years old, replacement may improve system efficiency significantly. LEX will inspect your ductwork as part of the estimate process and give you an honest assessment. Learn more about our duct replacement services.
