Generator Repair & Maintenance Services in North Texas
Cantwell Home Generators is an industry leader for generator maintenance, service and repair. We have been serving the north Texas for over 50 years. All of our technicians are factory trained and certified. We service all major brands of generators and automatic transfer switches.
Preventative Generator Maintenance & Routine Care
We have been serving the North Texas for over 50 years. All of our technicians are factory trained and certified. We service all major brands of generators and automatic transfer switches.
- Non emergency service calls responded to within 24 hours.
- Maintenance contracts available monthly, quarterly, bi-annually, and annually.
- Load banking service available on any size unit.
- Turnkey installations available on generators and transfer switches. Building analysis performed for proper sizing on all new installations and/or upgrades.
- All used oil, fuel, and antifreeze are disposed of properly to ensure environmental conservation.
Consistent generator maintenance is the foundation of long-term reliability. A comprehensive maintenance service typically includes:
- Full system inspection by a trained technician
- Oil and air filter replacement
- Battery testing
- Automatic transfer switch evaluation
- Diagnostic review and performance verification
Professional scheduled maintenance helps prevent unexpected failures, extend equipment life, and maintain manufacturer warranty standards.
A whole-house generator needs regular maintenance even if it rarely runs during an outage.
Current manufacturer guidance varies significantly by:
- brand
- model
- engine
- air-cooled vs liquid-cooled design
- operating hours
- calendar age
- climate
- dust and environmental conditions
- whether the generator has just run continuously through a long outage
Generator Service & Repair
Whether your whole home or standby generator system was purchased, installed and/or serviced by Cantwell Home Generators or another company, you can take advantage of our rapid-response generator repair and troubleshooting services.
Cantwell Home Generators is certified as a warranty repair dealer with all major manufacturers of residential generator systems including but not limited to Generac, Kohler. Working with Cantwell Home Generators provides peace of mind because we handle everything from the initial claim to communicating with the manufacturer and making the final generator repairs.
BENEFITS OF CHOOSING US:
- Extend the lifetime of your generator system
- Reduce the chance of breakdown
- Priority urgent response
We also perform inspections and preventive maintenance service for all standby generators, currently maintaining diesel, natural gas and propane units of all sizes throughout North Texas and beyond.
Certified technicians diagnose performance concerns quickly and perform necessary repairs and services using genuine parts designed for Generac or Kohler Generators. Whether the issue involves fuel delivery, electrical components, or transfer switch response, professional standby generator repair ensures safe and accurate resolution.
Fast response matters when your home depends on reliable backup support.
A backup generator that does not work during an outage is worse than an inconvenience.
It means you own backup equipment that failed at the exact moment it was supposed to earn its keep.
Generator repair can involve anything from:
- dead starting battery
- low oil
- tripped breaker
- fuel-supply problem
- failed starter
- controller fault
- transfer-switch problem
- charging-system failure
through to much more expensive engine or electrical repairs.
The important distinction is:
troubleshooting does not always mean DIY repair.
There are several simple homeowner checks worth making.
But once the problem involves:
- fuel pressure
- internal wiring
- transfer equipment
- repeated breaker trips
- controller faults
- engine internals
You should generally move to a qualified generator technician rather than throwing parts at the machine.
Current manufacturer guidance from Generac, Kohler/Rehlko consistently directs owners towards authorised service when basic troubleshooting does not resolve the fault.
Load Bank Services
Performing load bank testing on your generator is critical to ensuring that the unit is operating properly and running at peak performance. As the state continues to enforce load banking standards, particularly with life safety, Cantwell Home Generators is committed to helping you meet those requirements in accordance with NFPA 110 standards.
FREQUENTLY ASKED QUESTIONS:
The following is a compilation of common questions and their corresponding answers that are often asked by customers or users
What can I expect during home standby generator installation?
Home standby generator installation usually includes setting the generator in place, connecting it to the electrical system through an automatic transfer switch, and tying it into the fuel source. Depending on your home, the process may also involve permits, inspections, and site preparation. We will outline the steps and timeline before installation begins.
Why can’t I get a home generator quote online?
While we can provide MSRP pricing for home generators and accessories, a full
installation quote requires a personalized home assessment. That’s because generator
installation costs vary based on several factors, including:
* Your preferred fuel source (natural gas or propane) and whether it's already
connected to
your home
* Local permitting requirements, which your certified KOHLER dealer will manage for
you
* Generator placement on your property, which impacts materials, labor, and code
compliance
To ensure an accurate price, we will perform a free on-site consultation to
evaluate your home’s layout and recommend the right generator size, location, and
installation plan.
What is a minor and major preventative maintenance visit?
A “Minor PM Service” is a complete evaluation of your generator including the ATS (automatic transfer switch) and associated systems. We top off all fluids (coolant, fuel, and oil), clean the generator and its enclosure, startup and test the generator.
A “Major PM Service” includes the same services from the Minor PM Service and more. It includes the replacement of normal maintenance materials including lubricating oil, fuel filters (as needed), topping off coolant, cleaning, and inspection as well as a start-up and test.
We complete our 23-Point Checklist at every PM visit and give you a report on the condition of the unit and any recommended parts or repairs.
Why do I need to have service twice a year?
We recommend servicing the unit twice a year so that the fluids and condition of the unit every few months is closely monitored and reported- this helps to avoid major issues when you need your generator most. The generators have mechanical and electrical components, some things can be damaged from being outside or simple usage over time. It’s always better to keep an eye on your unit than to find them during an outage when the unit is needed.
Why is my generator running, we have power?
Generators are programmed to exercise every week for roughly twenty minutes. Some units don’t account for daylight savings so throughout the year the time may vary by an hour or so. This is a normal function of the unit and nothing to be alarmed about.
What size generator do I need for my small business or home?
The best size generator for your home or small business depends on the type of appliances it needs to fuel, such as appliances, pumps, air conditioners, and other electronic devices. The typical home uses around 140 to 160 amps of 240 volts of power to simultaneously operate everything. Larger appliances typically utilize 240 volts of power, while lights and smaller appliances account for 120 volts of power. You will need to determine the number of amps and watts you need in order to find the best generator for you. At Cantwell Home Generators, we configure the best option for you during our free home consultation.
How long will it take to install my generator?
Installations vary from home to home due to the layout and configuration of certain homes and units. After receiving permit approvals from local town officials, we will schedule the electrical work to be performed and the generator to be set, taking roughly 1-3 days. After the electrical work is completed, we schedule the plumbing to be completed which is an additional 1-3 days depending on the house layout. Finally, we will call for inspection for each trade.
What is an automatic transfer switch?
The ATS (automatic transfer switch) is responsible for transferring power from a standard source to emergency power. It recognizes when the grid power fails and automatically jumpstarts the generator into action. When the grid regains power, the ATS automatically transfer power back to the original source and turns the generator off.