Whole House Generators

Whole House Generators Running on Natural Gas: A Reliable and Convenient Power Solution

champion stand by generator

Whole house generators running on natural gas are becoming increasingly popular as reliable and convenient power solutions for homeowners. Natural gas generators offer several advantages, including continuous fuel supply, reduced maintenance requirements, and quieter operation compared to other fuel types. In this article, we will explore the benefits, working principle, installation considerations, and maintenance aspects of whole house generators powered by natural gas.

DuroMax XP15000EH, whole house generator

Advantages of Natural Gas Whole House Generators:

  1. Continuous Fuel Supply: Unlike portable generators that require frequent refueling, whole house generators running on natural gas are connected to your home’s gas supply. This uninterrupted fuel source ensures a continuous power supply without the need for manual intervention.
  2. Automatic Operation: Natural gas whole house generators are equipped with automatic transfer switches that detect power outages and automatically start the generator. This seamless process eliminates the need for homeowners to be present during an outage, providing peace of mind and convenience.
  3. Cost-Effective: Natural gas is typically less expensive than other fuel options, such as propane or diesel. Over time, this can lead to cost savings, especially for those who experience frequent or prolonged power outages.
  4. Quieter Operation: Natural gas generators generally produce less noise compared to diesel or gasoline generators. This quieter operation is especially beneficial for residential areas where noise regulations may apply.
  5. Eco-Friendly: Natural gas is considered a cleaner-burning fuel compared to diesel or gasoline. Natural gas generators produce lower emissions, reducing their impact on the environment.
  6. Low Maintenance: Natural gas generators have fewer moving parts than diesel or gasoline engines, resulting in reduced maintenance requirements. Additionally, natural gas burns cleaner, leading to fewer carbon deposits and extended engine life.

Working Principle of Natural Gas Whole House Generators:

Natural gas whole house generators function based on the same principles as other internal combustion engines. Here is an overview of their working principle:

  1. Automatic Transfer Switch (ATS): When the main power supply is functioning correctly, the automatic transfer switch keeps the generator in standby mode. It continuously monitors the utility power supply.
  2. Power Outage Detection: In the event of a power outage, the ATS senses the loss of utility power and signals the generator to start.
  3. Generator Start-Up: Once the generator receives the signal from the ATS, it automatically starts its internal combustion engine.
  4. Power Generation: The engine drives an alternator that produces electricity. The generator output is then sent through the ATS to your home’s electrical panel.
  5. Power Restoration: As the generator starts producing electricity, the ATS switches the power supply from the utility grid to the generator, restoring power to your home. The switch is seamless and automatic, ensuring a smooth transition without interruption to your electrical devices and appliances.
  6. Utility Power Return: When the utility power is restored, the ATS detects the return of electricity and switches the power supply back to the utility grid. The generator is then shut down, returning to standby mode until needed again.

Installation Considerations:

Proper installation is crucial for the safe and efficient operation of a natural gas whole house generator. Consider the following factors during installation:

  1. Professional Installation: Natural gas generators require professional installation by licensed electricians and qualified technicians. Improper installation can lead to safety hazards, reduced performance, and voiding of warranties.
  2. Location: Choose a suitable location for the generator that complies with local building codes and regulations. It should be installed outdoors and away from doors, windows, and ventilation openings to prevent exhaust fumes from entering the home.
  3. Fuel Connection: Ensure a secure and leak-free connection to the natural gas supply. Gas piping must be properly sized and pressure-tested to meet safety standards.
  4. Exhaust System: Proper ventilation is essential to direct exhaust gases away from the generator and the living areas. Install an exhaust system that complies with local codes and keeps harmful emissions away from the home.
  5. Automatic Transfer Switch: The ATS should be installed close to the electrical panel for efficient power transfer. It must be appropriately sized to handle the electrical load of your home.
  6. Permits and Inspections: Obtain any necessary permits and schedule inspections as required by local authorities to ensure compliance with safety regulations.
Whole house generators running on natural gas

Maintenance of Natural Gas Whole House Generators:

Proper maintenance is essential to keep your natural gas whole house generator running smoothly and efficiently. Regular maintenance tasks include:

  1. Scheduled Maintenance: Follow the manufacturer’s maintenance schedule for tasks such as oil changes, filter replacements, and spark plug checks.
  2. Fuel Quality: Ensure the natural gas supply is free from impurities and contaminants that could affect the generator’s performance.
  3. Battery Maintenance: Check the generator’s battery regularly and replace it when needed to ensure reliable start-ups.
  4. Exercise the Generator: Regularly run the generator on a schedule specified by the manufacturer. This exercise helps keep the engine lubricated and ensures it remains in good working condition.
  5. Keep the Area Clean: Regularly inspect the generator area and keep it free from debris, leaves, and other materials that could hinder ventilation or attract pests.


Natural gas whole house generators offer a reliable and convenient solution for uninterrupted power supply during outages. Their automatic operation, continuous fuel supply, lower emissions, and reduced maintenance make them an excellent choice for homeowners seeking peace of mind and comfort during emergencies. When considering a natural gas whole house generator, ensure professional installation, proper maintenance, and adherence to safety regulations to ensure optimal performance and longevity. With a properly installed and maintained natural gas generator, you can rest assured that your home will remain powered and comfortable during unexpected power outages.