Houston’s Trusted Electrical Contractor for KOHLER, Duromax & Generac Generators
Standby Power Services for Homes and Businesses Across Greater HoustonColwell Electric installs and services top-tier standby generators from industry leaders like KOHLER, Duromax, and Generac—each known for reliable performance, smart automation, and long-term durability. Whether you need backup power for a single-family home, commercial facility, or critical care environment, we’ll match you with the right generator and install it to code.
As an authorized KOHLER dealer—and a trusted installer of Duromax and Generac systems—we handle the full process from sizing and product selection to installation, permitting, and inspection. Every generator we install is built to start automatically when the power goes out, keeping your essential systems running—HVAC, refrigeration, internet, medical devices, and more.
Our electricians are trained, locally based, and experienced in Houston’s unique weather and grid conditions. We service backup power systems to handle real-world outages, so you can stay protected when it matters most.
Additional Services
Which Generator Brand Is Right for You?
Not sure whether KOHLER, Duromax, or Generac is the best fit for your home or business? We help you compare features, fuel options, and performance ratings to find the right system for your power needs, budget, and long-term goals. Each brand we offer has distinct advantages:
Our team walks you through the pros and cons of each, answers your questions, and recommends a system sized specifically for your home or facility. With Colwell Electric, you get expert guidance and lasting peace of mind.
Generator Brands We Service
Choosing a generator is about selecting the right partner to install and maintain it properly. Colwell Electric delivers full-service generator support for homes and businesses across Houston. From local permitting to storm-season readiness, our team understands what it takes to keep your power on when the grid goes down.
Houston’s Best Generator Service Contractors
Very professional, quality work.
“No other company came close to the cost I was quoted from Colwell Electric. A family-owned business that I highly recommend.”
Kind and responsive service.
“10/10 we loved working with Mike and his team. Mike was always so responsive and I love how creative he is when it came to redoing our electric and making it still aesthetically pleasing. Can’t recommend these guys enough!”
Quick, efficient, and thorough!
“Our Ting sensor kept sending multiple warnings. After two other electricians and the power company came to check it out, nothing was found. Trent from Colwell Electric diagnosed and found the problem. Repaired it and we’ve had no other issues!”
What a great service you offer!!!
“As Realtors, we are always looking to add value to our clients. I’m excited about the new product Colwell is offering to monitor the electric connections in my home. I have worried about shorts…..not anymore.”
Quality and quick service!
“They were always on time. Prices were competitive. Cleaned up afterwards. I will use them again.”
Team was excellent!
“I contacted Colwell Electric because lightning struck my home and damaged quite a few outlets and light fixtures. Mike D. took great care of me. He was helpful and answered all my questions. I am very pleased with their work and professionalism.”
Generator Brand FAQs
Choosing the right standby generator is a major decision, and it’s normal to have questions before committing to a system. Below, we’ve answered some of the most common questions about Kohler, Duromax, and Generac generators, including sizing, automatic functionality, lifespan, certification, and installation timelines.
The right generator size depends on how much of your property you want to power during an outage. Some homeowners choose to support only essentials like lights, refrigeration, HVAC, or medical devices. Others opt for full-property coverage. For commercial properties, size depends on your facility’s square footage, load requirements, and power continuity needs.
We perform detailed site assessments to determine the best system for your application—whether it’s a 20 kW Generac for a mid-sized home, a 26 kW Kohler for whole-house power, or a Duromax system for budget-conscious dual-fuel flexibility. We’ll size the unit correctly, ensure local code compliance, and guide you through the entire process.
Yes, all three brands—Kohler, Duromax, and Generac—offer models with automatic start capability using transfer switches. These systems detect a power failure and switch to generator power without manual intervention.
- Automatic Detection: System senses the outage within seconds
- Fast Startup: Generator powers up and transfers the load automatically
- No Manual Switching: Fully hands-off operation, even when you’re away
- Seamless Return to Utility Power: System reverts and shuts down when the grid is restored
This ensures your lights, appliances, and critical systems stay on—without lifting a finger.
With proper installation and regular maintenance, most standby generators can last 10 to 20 years or longer. Factors like run-time frequency, environmental conditions, and service intervals all affect overall lifespan. Kohler and Generac are engineered for longevity and heavy-duty operation. Duromax offers durable designs at a more accessible price point, ideal for less frequent use or smaller systems.
Colwell Electric offers long-term maintenance plans for every brand we install. We handle oil changes, battery checks, firmware updates, and part inspections to keep your system in peak condition. Preventive care not only extends the life of your generator—it ensures it’s ready to run when it matters most.
Yes. Colwell Electric is an authorized KOHLER dealer and a trusted installer for Duromax and Generac systems. Our electricians receive factory training and have hands-on experience across all three brands.
- Certified Installers: Compliant with manufacturer standards and best practices
- Warranty-Backed Work: Installation meets requirements for full coverage
- Product Knowledge: We help you compare brands and choose the right system
- Expert Setup: Configured for performance, safety, and long-term reliability
No matter the brand, we install every generator to code and to the highest standards in the industry.
Installation timelines depend on permit processing, utility coordination, system availability, and weather conditions. In many cases, Colwell Electric can complete installation in just a few weeks. For complex or high-demand systems, it may take longer depending on supply chains and inspection scheduling.
Once we complete your site evaluation, we’ll provide a clear project timeline with no surprises. We manage the entire process in-house—from design and permitting to trenching, installation, and inspection—ensuring your system is up and running with minimal disruption.
Explore More Power Insights on Our Blog
Want to learn more about how standby generators work, how to prepare for an outage, or what to expect during installation? Check out our blog for tips, comparisons, and expert guidance:
Contact Colwell Electric for Back-Up Power Generator Installation
Whether you’re investing in a Kohler, Duromax, or Generac standby generator, Colwell Electric is the team to trust. We’ve been helping Houston homeowners and business owners protect their power since 1990, with expert installation, honest advice, and long-term service you can count on.
From initial sizing and permitting to final inspection and maintenance, we do it all in-house. We understand Houston’s climate, infrastructure, and power demands better than anyone. Contact us today to schedule a consultation with a certified generator specialist.