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Reliable Backup Power Solutions from a Trusted Generac Dealer
Unexpected outages can disrupt your comfort, productivity, and safety. Whether due to severe weather, grid overload, or unpredictable failures, losing power can put your home and family at risk. That’s why Top Flow Plumbing proudly offers Generac® whole-home generators—America’s #1 trusted backup power solution.
As a professional plumbing and power services provider and authorized Generac supplier, we provide sales, installation, maintenance, and full support for Generac generators in McKinney, TX, and surrounding North Texas communities.
Generac is an industry leader in residential and commercial backup power solutions & the #1 selling brand of home standby generators in the U.S., known for its:
Generac generators seamlessly detect power loss and restore power within seconds—keeping your HVAC system, lights, appliances, security systems, and essential technology running without interruption.
Most modern Generac generators include Mobile Link™ Technology, allowing you to monitor your unit directly from a smartphone or tablet. Receive automatic alerts and performance status, whether you’re at home or traveling.
Financing Options Available:
We offer flexible financing options to make owning a Generac generator affordable. Ask about:
Home Standby Generators: Automatic, quiet, and dependable—ideal for whole-home or essential circuit backup.
Portable Generators: Convenient for job sites, RVs, outdoor activities, or temporary power.
Commercial & Industrial Units: Designed for small businesses, retail shops, offices, and commercial properties
Clean Energy + Solar Backup: Generac PWRcell storage systems for higher energy efficiency and renewable power options.
We assess your power needs, home size, fuel availability, and budget to recommend the ideal Generac generator system.
Our licensed team provides complete, code-compliant installation including system design, ATS setup, WiFi activation, and final testing.
We diagnose and repair all Generac generator issues, including startup failures, error codes, fuel problems, and ATS malfunctions.
Our scheduled maintenance plans keep your generator ready with inspections, oil changes, battery testing, software updates, and full diagnostics.
We assist with warranty registration, claims, and eligible repairs while providing genuine Generac replacement parts.
If your generator shows warning lights, fails to start, or performs abnormally, our team provides fast diagnostic and repair service.
Step 1. Utility power fails
Step 2. The generator detects the outage within seconds
Step 3. Automatic transfer switch activates
Step 4. Generator powers your home with natural gas or propane
Step 5. When power returns, your generator shuts off and resets
Your home stays powered—without lifting a finger.
Prices vary depending on size, home electrical demand, and installation requirements. Most homeowners spend between $5,500 – $15,000 for installation. Request a free on-site quote for accurate pricing.
Installation typically takes 4–8 hours, depending on electrical and gas line requirements.
With proper fuel supply and maintenance, a Generac generator can run continuously for days or even weeks.c
Homes usually require 10kW–26kW, depending on square footage and energy demands. Our experts will size the correct unit for you.
Yes—electrical and gas permits are typically required. Top Flow Plumbing handles all permitting for you.
Yes—Generac home standby generators run on natural gas or LP propane for continuous, automatic operation.
With proper maintenance, Generac standby generators typically last 20–30 years.
Yes. Annual service is recommended for optimal reliability, especially before storm season.
Absolutely. Backup power is a premium feature and can significantly increase property value—especially in Texas.
Yes, financing options may be available for qualifying installations.
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