Power outages have become more common in the United States. The U.S. Energy Information Administration (EIA) reports that the average American experiences over 8 hours of power outages per year. Longer outages are common during storms and heatwaves. A whole house generator provides a solution to this problem.
Whole house generators supply backup power automatically. They connect to your home’s electrical system and switch on when a power failure occurs.
This guide will explain how whole house generators work, their benefits, drawbacks, and what to consider before buying one.
Key Takeaways
- Whole house generators provide automatic backup power.
- They are connected directly to your home’s electrical system.
- They use natural gas or propane as a fuel source.
- An automatic transfer switch (ATS) controls activation.
- Proper installation and maintenance are important.
- Alternatives include portable generators and solar systems.
What is a Whole Home Generator?
A whole house generator is a standby generator that provides electrical power to your home during an outage. A house generator is different from a portable generator. It connects permanently to your home’s wiring. It uses an automatic transfer switch to detect when the power goes out.
Whole house generators differ from other backup solutions. Solar and battery systems store energy but can be limited by battery capacity and sunlight availability. Portable generators offer less power and require manual setup.
How Whole House Generators Work
Whole house generators work through a simple process:
- The automatic transfer switch monitors your utility power.
- When a power failure is detected, the switch signals the generator.
- The generator automatically starts and supplies power to your home.
- It connects to your home’s electrical system and powers selected circuits or the entire home.
- When utility power returns, the system switches back, and the generator shuts down.
Benefits of Whole House Generators
Whole house generators offer several benefits.
- Instant Power Restoration: Whole house generators automatically restore power, keeping your home connected and comfortable.
- Protect Critical Appliances: Refrigerators, HVAC systems, and medical devices continue to operate without interruption.
- Safety: No need for extension cords or gasoline refills. Generators are permanently connected and safer.
- Home Value Boost: Real estate experts say a standby generator can raise home value. It gives buyers peace of mind.
- Long-Term Savings: Costs from food spoilage, hotel stays, and home damage are reduced.
Disadvantages You Should Know
Whole house generators also have some disadvantages.
- High Upfront Cost: Equipment and installation can cost between $8,000 and $15,000.
- Ongoing Maintenance Requirements: Regular servicing is needed to keep the generator system in working condition.
- Fuel Storage Issues: Natural gas or propane must be readily available, especially during long outages.
- Noise and HOA Concerns: Generators can be noisy and may require approval from homeowner associations.
How to Choose the Right Whole House Generator
Choosing the right generator depends on your home’s needs.
Sizing Guide
To size your generator, calculate the total wattage of the appliances and systems you want to power. Common wattages:
| Appliance | Wattage (Running) |
|---|---|
| Refrigerator | 600-800 W |
| HVAC System | 3,000-5,000 W |
| Lights | 60-300 W each |
| Sump Pump | 1,000 W |
Decide if you want full-home backup or essential circuits only.
Fuel Type Comparison
| Fuel Type | Pros | Cons |
|---|---|---|
| Natural Gas | Unlimited supply, clean | Requires gas line hookup |
| Propane | Storage flexibility | Limited by tank size |
| Diesel | Efficient, powerful | Requires onsite storage |
| Dual-Fuel | Flexibility | Higher initial cost |
Budget Planning
Factor in generator cost, installation fees, and maintenance over 5 years. Check for any available tax credits or rebates.
Generator Installation Process
Installation involves site selection, permitting, and professional work.
Installers place the generator on a concrete pad near the home. They connect it to the fuel source and electrical system. Permits ensure local compliance. DIY installation is risky and may void warranties.
Maintenance Checklist
Regular maintenance ensures the generator works when needed.
Routine Tasks
- Oil changes.
- Battery inspections.
- Coolant checks.
How Often?
- Monthly: Visual inspections.
- Annual: Professional servicing.
- After Storms: System tests.
Smart Maintenance Tips
- Run the generator monthly.
- Keep fuel tanks full.
- Replace worn parts promptly.
Alternatives to Whole Home Generators
Some homeowners consider other backup power options.
- Portable Generators: They are affordable but require manual setup and fuel management.
- Solar + Battery Storage: Systems like Tesla Powerwall offer clean energy but are limited by storage capacity.
- Hybrid Systems: Combining a generator and solar provides flexibility and extended backup.
Common Mistakes to Avoid
Avoid these mistakes for better performance.
- Undersizing Your Generator: Always calculate total wattage accurately.
- Poor Site Selection: Avoid areas prone to flooding or poor ventilation.
- Neglecting Fuel Supply Planning: Ensure fuel sources are reliable.
- Skipping Maintenance: Increases the chance of failure during an outage.
Trust Right Touch Electrical for Whole Home Generator Installation
Whole house generators provide seamless backup power and protect your home. Choosing the right generator and ensuring professional installation is important.
Right Touch Electrical serves Houston, TX and surrounding areas. Our team delivers “quality with a master’s touch,” providing reliable generator installation.
FAQs
How long can a whole house generator run continuously?
Most standby generators can run for several days as long as the fuel supply is steady. Natural gas provides continuous fuel, while propane and diesel depend on tank capacity.
Do I need a permit for a generator?
Yes. Local codes typically require permits for generator installation to ensure safety and compliance.
How noisy are standby generators?
Noise levels vary, but most produce between 60 and 70 decibels, similar to an air conditioner.
How much fuel does a generator consume per day?
Fuel consumption depends on load and generator size. A 20kW generator running at half load uses about 3-5 gallons of propane or natural gas per hour.
