A whole home generator automatically powers your entire house during outages, unlike portable generators that only run a few appliances. This comprehensive backup power system seamlessly takes over when the electrical grid fails, keeping your lights on, refrigerator running, and air conditioning working without you lifting a finger.
Understanding how these systems work helps you make informed decisions about protecting your home and family from power disruptions that can last hours or even days.
What a Whole House Generator Does
A whole house generator serves as your home’s complete backup power solution. When installed properly, it monitors your home’s electrical supply 24/7 and automatically starts within seconds of detecting a power outage.
Key differences from portable generators:
Portable generators require manual setup during storms, run on gasoline that can be difficult to find during emergencies, and typically power only essential appliances through extension cords. Whole home generators eliminate these limitations entirely.
Primary benefits include:
- Automatic operation: No manual starting, fuel mixing, or extension cord management. The system activates automatically and shuts down when utility power returns.
- Whole-home coverage: Powers your entire electrical panel, meaning every outlet, light fixture, and hardwired appliance continues working normally during outages.
- Peace of mind: Whether you’re home or away, your generator protects against food spoilage, frozen pipes, security system failures, and the discomfort of extended power loss.
These systems typically run on natural gas or propane, providing reliable fuel sources that don’t require refilling during extended outages. Most whole home generators can operate continuously for weeks if needed, automatically performing self-tests to ensure readiness.
For DFW and Greater Houston homeowners, where severe weather can cause multi-day outages, a whole house generator transforms a potentially dangerous situation into a minor inconvenience. Learn more about preparing for severe Texas weather to protect your home and family during storm season.
How a Whole House Generator Works
A whole house generator operates through three main components working together to deliver seamless backup power to your home.
Automatic transfer switch: This electrical control panel continuously monitors your home’s power supply from the utility grid. The moment it detects voltage drop or complete power loss, it signals the generator to start and automatically disconnects your home from the utility lines to prevent dangerous backfeed.
Fuel source: Most residential units connect directly to your home’s natural gas line or a dedicated propane tank. This eliminates the need to store gasoline or manually refuel during outages.
Engine and alternator: The generator’s engine burns fuel to spin an alternator, converting mechanical energy into electrical power. Modern units produce clean, stable electricity that safely powers sensitive electronics like computers and medical equipment.
The complete power outage sequence:
- Detect: Within 10-20 seconds of power loss, the automatic transfer switch identifies the outage and sends a start signal to the generator.
- Start: The generator engine automatically starts and reaches optimal operating speed within another 10-20 seconds.
- Transfer: Once the generator stabilizes, the transfer switch disconnects your home from the utility grid and connects it to generator power.
- Run: Your generator continues supplying power automatically, monitoring engine performance and electrical output while running regular maintenance cycles.
- Restore: When utility power returns, the system automatically transfers back to grid power, runs a brief cool-down cycle, then shuts down until needed again.
What Powers a Whole House Generator?
Whole house generators run on three main fuel types, each offering distinct advantages for different home situations and budgets.
Natural gas generators connect directly to your existing gas line, providing unlimited runtime during extended outages. Natural gas costs typically range from $1.50-$3.00 per hour of operation for an average home. Installation is often simpler since gas lines already exist, though you’ll need adequate gas pressure and flow capacity.
Propane generators offer excellent reliability and cleaner combustion than other fuels. A standard 500-gallon propane tank provides approximately 5-7 days of continuous power for most homes. Propane costs roughly $3.00-$5.00 per hour but stores indefinitely without degrading, making it ideal for infrequent use or areas without natural gas service.
Diesel generators are less common for residential use but offer exceptional fuel efficiency and longevity. Diesel units typically cost $2.00-$4.00 per hour to operate and can run for thousands of hours between major maintenance intervals. However, diesel requires regular fuel rotation and may not start reliably in very cold weather.
For most Texas homeowners, natural gas provides the most convenient and cost-effective solution, especially in established neighborhoods with existing gas infrastructure. Propane works better for rural properties or homes where natural gas isn’t available.
Running time depends on your generator’s size and your home’s electrical load, but most properly sized units can operate continuously for weeks when connected to adequate fuel supplies.
What to Consider Before Installing
Several important factors determine the right generator solution for your home and budget. Understanding these considerations helps ensure you get a system that meets your needs without overspending.
Sizing the system: Generator capacity is measured in kilowatts (kW), typically ranging from 7kW to 26kW for residential applications. A 7-10kW unit handles essential loads like refrigeration, lighting, and a few outlets, while 20-26kW systems power your entire home including central air conditioning and electric water heaters.
Most Texas homes need 16-20kW capacity to maintain normal comfort during summer outages when air conditioning is critical. Your electrical panel’s main breaker size and your home’s peak electrical demand help determine the right generator size.
Placement and permits: Generators require level concrete pads positioned at least 5 feet from windows and air intake vents. Local building codes typically mandate 18-60 inches clearance from property lines and structures. Most installations require electrical permits and inspections, which professional installers handle as part of the service.
Maintenance and service: Whole home generators need annual professional servicing including oil changes, filter replacements, and system testing. Most manufacturers require maintenance every 200 hours of operation or annually, whichever comes first. Expect $300-$500 per year for professional maintenance to keep warranties valid.
Estimated costs: A whole home generator typically costs between $20,000-$25,000 for complete installation, with professional installers handling all electrical work and permit requirements.
Read more: Is a whole house generator worth it?
How to Choose the Right Generator Installer
Selecting the right installation company affects your generator’s performance, reliability, and long-term satisfaction. Several key factors separate professional installers from less experienced contractors.
Local expertise: Choose companies with extensive experience in your specific area’s electrical codes, permit requirements, and weather challenges. DFW and Greater Houston installers understand local soil conditions, flooding risks, and utility interconnection requirements that affect generator placement and performance.
Bacon Plumbing Heating Air Electric has served the DFW area for years, building relationships with local inspectors and understanding regional installation challenges that affect system reliability.
Warranty and service support: Look for installers who offer comprehensive warranties covering both equipment and installation work. Quality providers maintain factory certifications with major generator manufacturers, ensuring they can perform warranty service and have access to genuine parts.
Ask about response times for emergency service calls and whether they stock common replacement parts locally. Generator problems often occur during storms when you need immediate assistance.
Certifications and licensing: Verify your installer holds current electrical licenses, manufacturer certifications, and proper insurance coverage. Licensed electricians ensure safe connections to your electrical panel and compliance with local codes.
Financing and incentives: Many providers offer financing options to spread installation costs over time. Some utility companies provide rebates for standby generators that reduce grid strain during peak demand periods. Professional installers help identify available incentives and handle paperwork for rebate programs.
Request detailed written estimates that include all components, labor, permits, and cleanup. Quality installers provide transparent pricing without hidden fees or surprise charges.
Why Choose Bacon Plumbing Heating Air Electric
Bacon Plumbing Heating Air Electric brings over a decade of electrical expertise to every generator installation. We’ll have your backup power system operates reliably when you need it most.
Experience and credentials: At Bacon, we specialize exclusively in Generac whole home generators. Our team has completed hundreds of residential installations across the DFW metroplex and Greater Houston area, giving us a detailed understanding of local codes, soil conditions, and utility coordination.
Our licensed electricians follow manufacturer-approved installation methods to ensure safe, efficient performance and long-term reliability. From panel integration to permitting, every install is handled with precision and care to meet Texas homeowners’ needs.
Customer testimonials:
Service guarantees: We stand behind every installation with comprehensive warranties covering both equipment and our workmanship. Our service department maintains emergency response capabilities and stocks common replacement parts to minimize downtime when you need repairs.
All installations include thorough testing, customer training, and detailed documentation for future service needs. We also provide annual maintenance reminders to keep your warranty valid and your generator ready.
Frequently Asked Questions
Are whole house generators loud?
Modern whole house generators operate at about 65-75 decibels, similar to a conversation or dishwasher. Most neighbors won’t notice the sound, especially during storms when ambient noise is higher. Units automatically run brief weekly tests during daytime hours to minimize any disturbance.
How often do whole house generators need maintenance?
Professional maintenance is required annually or every 200 hours of operation, whichever comes first. This includes oil changes, filter replacements, and system testing. Most homeowners spend $300-$500 annually on professional maintenance to keep warranties valid.
Do I need a permit to install a whole house generator?
Yes, generator installations require electrical permits and inspections in most Texas municipalities. We handle all permit applications and coordinate inspections as part of our installation service, ensuring full code compliance without hassle for you.
Contact Us for a Whole House Generator Quote
Ready to protect your home with reliable backup power? Our generator experts are standing by to help you choose the right system for your needs and budget. Call 469-213-6505 for immediate assistance and consultation scheduling.
All consultations include honest assessments of your power needs, transparent pricing, and no-pressure recommendations. We provide 24/7 emergency service for existing generator customers, ensuring your backup power system stays ready when you need it most. We’re committed to helping DFW and Greater Houston homeowners find the right generator solution for their specific situation and budget.
