When the power goes out, your home doesn't have to.
A whole-home standby generator starts automatically within seconds of an outage — protecting your family, your food, your AC, and everything you depend on. No extension cords. No noise in the garage. No thinking about it.
10% Off Your Total Project
Free In-Home Estimate No obligation. A licensed LEX electrician visits your home, assesses your needs, and gives you an honest quote — no pressure.
In-Home Generator Consultation & Estimate
We visit your home, assess your electrical panel and power needs, and give you a clear, upfront quote. Zero pressure.
Texas had the most power outages of any state last year — and summer heat puts the grid under maximum strain.
You don’t have to panic-buy a portable generator at Home Depot the night before a storm. A whole-home standby generator sits quietly outside, runs on natural gas or propane, and turns itself on the moment power fails. Most homeowners only think about it after they needed one.
Power goes out. Your home never notices.
A whole-home standby generator works completely automatically — no switches to flip, no cords to run, no garage trips in the dark.
Grid Power Fails
T = 0 seconds
Utility power goes out — storm, grid overload, or a tripped line. Your neighborhood goes dark.
Generator Detects It
T = 8–10 seconds
The automatic transfer switch detects the outage and signals your generator to start. No action required from you.
Generator Starts & Syncs
T = 10–30 seconds
The generator reaches operating speed, stabilizes, and the transfer switch safely disconnects from the grid.
Your Home Has Power
T = 30 seconds
Lights stay on. AC keeps running. Refrigerator holds temp. You barely notice the outage happened at all.
Portable generator vs. whole-home standby
They both generate power — but that’s about where the similarity ends.
What size generator does your home need?
Generator capacity is measured in kilowatts (kW). Here’s a simple way to think about it — we’ll size yours precisely during the free estimate.
10–14 kW
Covers:
Lights & outlets throughout
Refrigerator & freezer
Window AC or small central unit
TV, internet, phone charging
Well pump (if applicable)
18–22 kW
Covers:
Everything in essentials, plus:
Full central air conditioning
Electric range or oven
Washer & dryer
Home office & medical equipment
Security & smart home systems
24–38 kW
Covers:
Everything in popular, plus:
Multiple HVAC systems
Pool pump & hot tub
EV charger
Home theater & large appliances
Guest house or ADU
Everything handled, start to finish.
We’re not just dropping off equipment. From permit to startup, LEX manages the entire project.
Free In-Home Assessment
A licensed LEX electrician evaluates your electrical panel, fuel source, home load, and ideal generator placement — and gives you an upfront, all-in quote with no surprises.
Permits & Utility Coordination
We pull all required permits and coordinate with your gas utility for the fuel connection. You don't have to make a single call — we handle the paperwork.
Professional Installation
Our crew installs the generator, transfer switch, fuel line, and all electrical connections to code. Most residential installations are completed in one day.
Transfer Switch & Panel Work
We install and configure the automatic transfer switch that detects outages and switches your home's power within seconds — safely and without you lifting a finger.
Load Test & Full Walkthrough
We simulate an outage to verify everything works perfectly. Then we walk you through maintenance, weekly self-tests, and how to monitor your system remotely.
Ongoing Service & Support
Generators need annual maintenance to stay ready. LEX offers service plans to keep your system in peak condition — so when you need it, it works.
The grid works — until it doesn't.
Texas operates its own power grid (ERCOT), independent from the national network. That means when Texas has a problem, Texas deals with it alone — without the ability to draw from neighboring states.
Winter Storm Uri in February 2021 left over 4 million Texas homes without power, some for more than a week in freezing temperatures. Over 240 people lost their lives.
#1
4M+
in Winter Storm Uri
8+
240+
Winter Ice Storms
DFW sees ice events that knock out power for days. In February heat drops below freezing — without power, pipes burst and homes become uninhabitable.
Summer Grid Strain
ERCOT issues emergency conservation requests every summer during heat waves. Rolling outages during 105° days with no AC are dangerous — especially for elderly family members.
Medical Equipment & Special Needs
CPAP machines, oxygen concentrators, insulin refrigeration, home dialysis — for some families, power isn't a convenience. It's a medical necessity.
Home Office & Remote Work
If you work from home, a power outage means lost income. A generator keeps your internet, computer, and work environment running no matter what.
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Dallas-Fort Worth’s Trusted Home Service Experts Since 2004
For more than 20 years, LEX Air Conditioning and Heating has helped homeowners across the Dallas-Fort Worth metroplex stay comfortable with reliable HVAC, plumbing, and electrical services. By doing the job the right way, we’ve earned the trust of the communities we serve—and more than 2,500 five-star reviews.
Complete Home Services for North Texas Homes
What began as a small HVAC company has grown into a full-service home comfort provider serving more than 40 communities throughout North Texas. Whether you need AC repair, furnace repair, plumbing services, or electrical services, LEX delivers the expertise to keep your home running smoothly.
Local Technicians. Trusted Service.
Our technicians live and work in the same communities they serve, including Plano, Frisco, Carrollton, Richardson, Dallas, and surrounding areas. As a Trane Comfort Specialist dealer, we offer premium heating and cooling systems backed by industry-leading warranties.
One Call for Every Home Comfort Need
From emergency slab leak repair and EV charger installation to seasonal AC tune-ups, LEX Air Conditioning and Heating provides the essential home services you need—all from one trusted company.