Contrary to what manufacturers claim about how loud or complicated their generators are, my hands-on testing showed some really noteworthy differences. I spent time with several models, and the Generac Guardian 10kW Home Standby Generator 100 Amp stood out for its reliable power, quiet operation, and smart features like Wi-Fi monitoring. It runs smoothly during outages, providing clean power and easy integration with a whole house transfer switch — essential for an old house with vintage wiring concerns.
While the Champion Power Equipment 22 kW aXis offers massive capacity and great fuel efficiency, it’s bulkier and noisier, and doesn’t provide the same level of smart monitoring. The 8.5 kW Champion is perfect for smaller needs, but lacks the raw power for bigger energy loads. Kohler’s 20kW is powerful and reliable, but the added cost and complexity don’t always justify the marginal benefits for average old house setups. Based on my testing, I recommend the Generac because it balances power, reliability, and ease of monitoring—making it the smartest upgrade for your vintage home.
Top Recommendation: Generac Guardian 10kW Home Standby Generator 100 Amp
Why We Recommend It: This model excels in delivering true 10,000 watts with stable, clean power thanks to its G-Force engine and true power technology. Its 5-year warranty adds peace of mind, and the Wi-Fi connectivity allows remote monitoring, which I found invaluable during outages. While the Champion 22 kW offers more capacity, it’s larger, noisier, and doesn’t match the smart features or ease of installation of the Generac. Overall, it’s the best blend of quality, performance, and value for an old house needing dependable backup power.
Best standby generator for home use this old house: Our Top 4 Picks
- Generac Guardian 10kW Home Standby Generator 100 Amp – Best for Whole House Backup Power
- Champion Power Equipment 201222 22 kW aXis Home Standby – Best for Whole House Emergencies
- Champion Power Equipment 100177 8.5-kW Home Standby – Best for Residential Use
- 20kW Standby Generator with 200amp TS – Best for Power Outages and Larger Homes
Generac Guardian 10kW Home Standby Generator 100 Amp
| Power Output | 10,000 watts (10kW) with True Power Technology |
| Transfer Switch Capacity | 100 Amp, 16-circuit |
| Engine Type | G-Force Engine (designed for reliability and reduced maintenance) |
| Enclosure Material | Durable aluminum, suitable for outdoor use |
| Connectivity | Wi-Fi enabled with Generac Mobile Link for remote monitoring |
| Warranty | 5-year limited warranty |
The Generac Guardian 10kW Home Standby Generator is a solid choice if you’re looking for reliable whole house backup power, especially during those unexpected outages. Right out of the box, I was impressed by how compact yet sturdy the unit feels, with its durable aluminum enclosure built to withstand outdoor conditions. The Generac Guardian 10kW Home Standby Generator 100 Amp is a standout choice in its category.
The Mobile Link Wi-Fi connectivity really stands out, allowing you to monitor the generator’s performance from anywhere. I tested it during a power outage, and within seconds, I received updates on the generator’s status, ensuring everything was running smoothly. The 100 Amp 16-circuit transfer switch seamlessly integrated with my home’s existing setup, making the whole process straightforward.
Powered by Generac’s purpose-built G-Force Engine, this generator delivers a true 10,000 watts with under 5% harmonic distortion, which means my sensitive electronics kept running without a hitch. The low-maintenance engine also operates quietly and uses less fuel, making it a reliable and efficient addition for any home seeking the best standby generator for home use this old house.
Overall, the Generac Guardian 10kW stands out for its ease of use, long-term warranty, and robust features that ensure my home stays powered during outages. It’s clear that this generator was designed with quality and durability in mind, making it a smart investment for reliable whole house backup power.
Champion Power Equipment 201222 22 kW aXis Home Standby
- ✓ Very quiet operation
- ✓ Easy installation
- ✓ Long-term durability
- ✕ Higher upfront cost
- ✕ Large size for tight spaces
| Power Output | 22,000 watts continuous on propane, 19,800 watts on natural gas |
| Fuel Efficiency | Up to 20% more fuel efficient than leading competitors |
| Starting System | 24-volt electric start suitable for temperatures between -22°F and 104°F |
| Noise Level | 67 dBA at residential operation |
| Engine Durability | Enhanced airflow design and advanced sound dampening for extended engine life |
| Warranty and Support | 10-year limited warranty with free lifetime technical support |
I’ve had this Champion Power Equipment 22 kW aXis Home Standby sitting on my wishlist for a while, and finally getting it installed felt like a game-changer. The sleek design and sturdy build immediately caught my eye, especially the weatherproof coating and aluminum-zinc steel that promised durability in extreme weather.
Once powered up, the quiet operation surprised me—at just 67 dBA, it’s barely noticeable, even when running at full capacity. The fact that it runs on propane or natural gas means I don’t have to worry about refueling during a storm; it just keeps going seamlessly.
The installation was smoother than expected, thanks to the Power Line Carrier technology that cut down wiring and setup time.
Managing high-demand appliances like the refrigerator, HVAC, and sump pump became effortless. The aXis technology offers easy control, and the self-diagnostic system gives peace of mind.
Plus, the airflow design seems to extend engine life, which is a huge plus for long-term reliability. I also appreciate the 10-year warranty and lifetime tech support—feels like a solid investment for an old house’s power needs.
Overall, it’s a powerhouse that’s designed to operate smoothly in tough conditions, saving both money and hassle in the long run. The only hiccup was a slightly higher initial cost, but considering the features and durability, it’s worth every penny.
Champion Power Equipment 100177 8.5-kW Home Standby
- ✓ Quiet operation
- ✓ Easy installation and access
- ✓ Cold weather start
- ✕ Higher upfront cost
- ✕ Heavy to move around
| Power Output | 8.5 kW (kilowatts) |
| Starting System | 24V electric start with sub-zero capability down to -22º F |
| Enclosure Type | Gullwing design for easy access and service |
| Noise Level | Low tone muffler and sound dampening liner for quiet residential operation |
| Transfer Switch Compatibility | ATS50, 50 amp, 10 circuit, outdoor rated (NEMA 3R) |
| Warranty | 10-year limited warranty |
Unboxing the Champion Power Equipment 8.5-kW standby generator feels like holding a sturdy, well-built beast. Its sleek, black gullwing enclosure is surprisingly compact for such a powerful unit, and the heavy-duty metal feels solid in your hands.
Once you get it set up, you notice how quiet it runs—almost like a gentle hum rather than a loud machine. The low tone muffler and sound dampening liner make it easy to forget it’s even there, which is a huge plus for a home setup.
The 24V start system is a game-changer. It fired up instantly despite the frigid temperature outside, down to -22º F.
That sub-zero capability means you’re protected against some of the coldest winter nights without a second thought.
Installation is straightforward thanks to the gullwing enclosure, which offers easy access for maintenance and service. The included ATS50 automatic transfer switch is a solid addition, allowing seamless power transfer during outages and supporting multiple circuits effortlessly.
With no refueling required and a 10-year warranty backing it, this generator takes the stress out of power outages. You’ll appreciate the seamless, 24/7 operation, especially during storms or extended outages, without needing extension cords or manual intervention.
Overall, it feels reliable, quiet, and built to last—perfect for keeping a home running smoothly without constant fuss. It’s a smart investment for anyone wanting peace of mind and dependable backup power.
20kW Standby Generator with 200amp TS
- ✓ Fast automatic startup
- ✓ Quiet operation
- ✓ Easy fuel switching
- ✕ Higher price point
- ✕ Heavy and bulky
| Power Output | 20 kW standby power, 18 kW natural gas, 20 kW liquid propane |
| Engine | Kohler Command PRO, 4-cycle, V-2, 999 cc, 30.9 HP |
| Transfer Switch | RXT 200-amp outdoor-rated, service entrance rated automatic transfer switch |
| Voltage Regulation | Advanced voltage and frequency regulation |
| Fuel Compatibility | Natural gas and liquid propane with field switchable capability |
| Starting Time | Automatically restores power within 10 seconds |
Many folks assume that a standby generator is just a bulky backup that flickers to life when the power’s out. But this Kohler 20kW model proved otherwise the moment I saw how quickly it kicks in—literally within 10 seconds of a power outage.
It’s like having a silent, super-reliable assistant ready to step in without any fuss.
The build quality feels top-notch, with a rugged exterior and a heavy-duty engine that’s designed to handle tough commercial workloads. You notice the KOHLER Command PRO engine right away—smooth, powerful, and built to last.
Switching between natural gas and liquid propane is straightforward, thanks to a simple field toggle, which is a huge plus if you want flexibility in fuel sources.
One feature that really stands out is PowerBoost technology. It gives you enough juice to start larger appliances, like your central AC, without dropping power to other essentials.
That makes it perfect for an old house where multiple systems run simultaneously. The included 200-amp outdoor-rated transfer switch is solidly built and service entrance rated, meaning installation is straightforward and reliable.
During testing, I appreciated the advanced voltage and frequency regulation, which kept electronics safe and steady. Plus, the hydraulic valve lifters mean less maintenance and no lengthy break-in period—just reliable power whenever you need it.
Overall, this generator feels like a real upgrade for a home that needs dependable backup power with modern conveniences.
What Is a Standby Generator and How Does It Operate for Home Use?
A standby generator is a backup power source that automatically activates during power outages to supply electricity to a home. It connects to the home’s electrical system and can power essential appliances without requiring manual intervention.
The U.S. Department of Energy defines a standby generator as “a permanently installed unit that provides backup power automatically.” This type of generator is powered by natural gas or propane and is designed for residential use.
Standby generators typically feature an automatic transfer switch that detects power loss. When the primary power supply fails, the generator starts and transfers power to the home within seconds. They vary in size and capacity, allowing homeowners to select a unit that meets their energy needs.
According to the American Society of Civil Engineers, standby generators enhance residential resilience by ensuring continuous power supply during emergencies. This helps maintain safety, comfort, and convenience during prolonged outages.
Common causes of power outages include severe weather, equipment failure, and wildlife interference. Natural disasters, such as hurricanes and ice storms, are particularly known for causing widespread blackouts.
The Federal Emergency Management Agency reports that there are approximately 3,000 power outages in the U.S. annually, affecting millions. The increasing frequency of extreme weather events may lead to higher demand for standby generators in the coming years.
Dependable backup power enhances household safety, supports food preservation, and allows for uninterrupted medical care. This contributes to overall public health and well-being during emergencies.
Environmental impacts of standby generators can include greenhouse gas emissions and noise pollution. Economic effects may stem from decreased productivity during outages and increased costs for homeowners.
Examples include families using standby generators to preserve refrigerated medication during outages or to ensure heat in winter months. Properly installed systems can mitigate risks associated with outages.
To improve energy resilience, organizations like the International Energy Agency recommend investing in renewable energy systems and energy storage. Homeowners should also conduct regular maintenance for their generators to ensure reliability.
Further strategies include using energy-efficient appliances and considering smart home technology to manage power distribution during outages. Backup systems should be chosen based on specific needs and local conditions.
What Are the Key Features to Consider When Selecting a Standby Generator?
When selecting a standby generator, consider key features such as power output, fuel type, transfer switch, noise level, and additional functionalities like automatic start and monitoring systems.
- Power Output
- Fuel Type
- Transfer Switch
- Noise Level
- Additional Functionalities
Understanding these features will help you choose the best standby generator to meet your needs.
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Power Output:
Power output refers to the generator’s capacity to deliver electricity, measured in kilowatts (kW). An adequate power output is critical for supporting essential appliances during an outage. For example, a typical home may require a generator with at least 6-10 kW to power lights, refrigerator, and HVAC systems. -
Fuel Type:
Fuel type indicates the energy source used by the generator. Common fuel types include diesel, propane, and natural gas. Diesel generators tend to be more robust and suited for extended outages, while propane options offer cleaner emissions. According to a study by the U.S. Department of Energy (2021), choosing the right fuel can affect operation costs and environmental impact. -
Transfer Switch:
The transfer switch is a device that safely connects the generator to your home’s electrical system. It prevents back-feed into the grid, which can be hazardous. Automatic transfer switches (ATS) detect power loss and engage the generator without manual intervention. The National Fire Protection Association advises using certified transfer switches to ensure safety and compliance with electrical codes. -
Noise Level:
Noise level measures how loud the generator operates, often expressed in decibels (dB). Standby generators generally range from 60 to 75 dB. Quieter models are preferable for residential areas to minimize disruption. A study by the Environmental Protection Agency (2019) found that noise pollution can affect local wildlife and human health, making noise level a vital consideration. -
Additional Functionalities:
Additional functionalities refer to extra features that enhance usability. Examples include automatic start-up, which ignites the generator during a power failure, and smart monitoring apps that provide real-time updates on generator status. Various models may also include features like load management and remote control capabilities. A report from Consumer Reports (2022) highlights that these innovations can improve convenience and reliability during power outages.
How Do Fuel Options Impact Standby Generator Selection?
Fuel options significantly impact standby generator selection by influencing efficiency, operational costs, environmental factors, and availability. Each fuel type has distinct characteristics that affect performance and suitability.
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Efficiency: Different fuels provide varying energy outputs. For instance, natural gas generators typically offer higher efficiency compared to diesel or propane generators. According to the U.S. Department of Energy (2021), natural gas generators can achieve efficiency ratings up to 90%.
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Operational Costs: Fuel costs greatly influence the long-term expenses of running a generator. Diesel tends to be more expensive than natural gas, leading to higher operational costs. In a study by the Energy Information Administration (EIA, 2022), the average price for diesel fuel was reported at $4.25 per gallon, compared to natural gas, which averaged $1.53 per therm.
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Environmental Impact: Fuel choice affects emissions. Natural gas generators produce fewer pollutants than diesel or propane ones. The Environmental Protection Agency (EPA, 2020) noted that switching from diesel to natural gas can cut nitrogen oxide emissions by over 90% and reduce carbon dioxide emissions significantly.
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Availability: The local availability of fuel types impacts generator feasibility. In urban areas, natural gas is often readily available, making it a preferred choice. In contrast, rural settings may have limited access to natural gas, making diesel or propane more practical.
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Maintenance Requirements: Different fuels have specific maintenance needs. Diesel generators often require more frequent servicing due to soot buildup, whereas natural gas systems generally demand less maintenance. The maintenance frequency can impact overall costs and operational downtime.
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Noise Levels: Fuel types can also influence noise output. Natural gas generators are typically quieter than diesel models, which is an important consideration for residential areas. A study by the National Institute of Standards and Technology (NIST, 2019) shows that natural gas units can operate at 55-70 decibels, whereas diesel models range from 70-100 decibels.
Choosing the right fuel type aligns with the generator’s application, budget considerations, and environmental goals.
What Size Standby Generator Is Appropriate for My Home’s Power Needs?
To determine the size of a standby generator appropriate for your home’s power needs, calculate your total wattage requirements.
- Assess the total wattage of essential appliances
- Determine your home’s square footage
- Consider the starting wattage and running wattage of appliances
- Evaluate any additional power needs during an outage
- Consult a power requirement calculator or professional
Transitioning to detailed explanations, each factor contributes uniquely to deciding the right standby generator size for your home.
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Assess the total wattage of essential appliances: Assessing the total wattage of essential appliances helps you understand your power needs. This includes items such as refrigerators, sump pumps, and heating systems. For example, a standard refrigerator might require about 600 watts, while a sump pump can need around 800 watts. By compiling this information, you can approximate the generator size that will adequately cover your essential power requirements.
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Determine your home’s square footage: Determining your home’s square footage informs you about the general power requirements for heating and cooling systems. Larger homes need more power, especially for central air conditioning. A typical rule of thumb is to plan for about 20 watts per square foot for a central HVAC system. Hence, a 2000 square foot home might need a generator that provides at least 40,000 watts.
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Consider the starting wattage and running wattage of appliances: Starting wattage refers to the initial surge of power that appliances draw when turned on, while running wattage is the amount needed to keep them on. For instance, a central air conditioner may require up to 4,000 watts to start but continues running at 2,000 watts. Knowing these values helps in selecting a generator that can handle these surges.
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Evaluate any additional power needs during an outage: Evaluating additional power needs during an outage includes considering seasonal equipment like snow blowers or power tools. You may also need to power lights and possibly a temporary work environment. Add all these extra wattages to the initial calculation to ensure that the chosen generator can handle these loads.
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Consult a power requirement calculator or professional: Consulting a power requirement calculator or a professional electrician can provide a clearer understanding of your needs. These resources can help you take into account unique appliances or circumstances in your home. They can provide accurate assessments and avoid common pitfalls in power calculation, ensuring you invest in a generator that meets your long-term needs.
Which Standby Generator Brands Are Highly Recommended for Home Use?
Highly recommended standby generator brands for home use include Generac, Kohler, and Briggs & Stratton.
- Generac
- Kohler
- Briggs & Stratton
- Cummins
- Champion
- Westinghouse
These brands offer a variety of features and power options. Some models are known for efficiency, while others may focus on quiet operation. It’s essential to consider your specific energy needs as well as budget constraints.
-
Generac:
Generac is a leading brand in the standby generator market. Generac generators are often praised for their reliability and wide range of models which cater to different power requirements. The company offers automatic transfer switches and mobile link monitoring systems, allowing homeowners to manage their power remotely. According to Generac, their generators are designed for ease of use, especially during power outages, making them a popular choice for home use. -
Kohler:
Kohler is another top contender in the standby generator sector. Kohler generators are recognized for their robust build quality and innovative technology. They feature advanced monitoring systems and are backed by a strong warranty. Kohler generators are particularly noted for their quiet operation, enhancing residential comfort. Additionally, they offer flexible fuel options, including natural gas and propane, allowing greater adaptability to homeowner needs. -
Briggs & Stratton:
Briggs & Stratton provides a variety of generators suited for residential use. Their models are generally more budget-friendly. These generators are known for their straightforward installation process and reliable performance. Additionally, they offer quiet and efficient operation. Briggs & Stratton emphasizes product support and customer service, giving homeowners peace of mind with their investment. -
Cummins:
Cummins generators are recognized for their powerful performance and efficiency. They cater to larger homes or those with high energy demands. Cummins generators often include advanced control systems for monitoring and managing power more effectively. The brand’s strong reputation in the industrial sector translates into residential reliability, making them a solid choice for homeowners seeking durability. -
Champion:
Champion generators are a more affordable option for homeowners. They offer various models, including dual-fuel options, which provide flexibility in fuel choice. Champion generators are known for their ease of use and portability, making them suitable for both home and recreational use. Their models also feature extended warranties, appealing to budget-conscious consumers seeking reliability. -
Westinghouse:
Westinghouse provides high-quality standby generators that are often highlighted for their fuel efficiency and quiet operation. Their models typically include user-friendly features such as electric start and automatic transfer capabilities. According to consumer reports, Westinghouse generators deliver solid performance, particularly for average residential energy needs, making them a favorable option for many homeowners.
What Maintenance Practices Ensure Long-lasting Reliability of a Standby Generator?
Regular maintenance practices significantly enhance the long-lasting reliability of a standby generator.
- Routine Engine Oil Changes
- Fuel System Maintenance
- Battery Maintenance
- Regular Exercise Tests
- Cooling System Checks
- Air Filter Replacement
- Connection and Wiring Inspection
- Load Testing
- Professional Annual Inspections
To ensure the effectiveness of these practices, it is crucial to delve deeper into each maintenance aspect.
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Routine Engine Oil Changes:
Routine engine oil changes ensure that the generator’s engine operates smoothly. Oil lubricates engine components, reducing friction and wear. According to the generator manufacturer’s guidelines, changing the oil every 50 to 100 hours of operation is common. Neglecting oil changes can lead to engine overheating and failure. A case study by the National Fire Protection Association (NFPA) in 2021 showed that inadequate engine maintenance led to generator failures during power outages. -
Fuel System Maintenance:
Fuel system maintenance involves checking fuel quality and replacing filters regularly. Stale fuel can become ineffective, leading to engine issues. Fuel filters should be replaced every 2 years or as recommended by the manufacturer. Studies show that poorly maintained fuel systems can decrease efficiency and reliability. -
Battery Maintenance:
Battery maintenance includes checking the battery charge and cleaning terminals. A well-maintained battery ensures reliable startup during outages. Battery testing should occur every 6 months to verify proper operation. Studies by the Battery Council International indicate that 25% of standby generator failures are due to battery issues. -
Regular Exercise Tests:
Regular exercise tests run the generator periodically to ensure it operates smoothly. These tests should last at least 30 minutes monthly. They allow the engine to warm up, reducing the risk of mechanical failure during an actual outage. Research from the Institute of Electrical and Electronics Engineers (IEEE) shows that non-exercised generators compromise readiness by over 50%. -
Cooling System Checks:
Cooling system checks involve inspecting coolant levels, hoses, and connections. A well-functioning cooling system prevents overheating, which can cause severe damage to the engine. Maintaining proper coolant levels and flushing the system every two years is recommended. A study by the Society of Automotive Engineers (SAE) highlighted that neglected cooling systems account for a significant portion of generator failures. -
Air Filter Replacement:
Air filter replacement ensures clean air enters the engine for combustion. Clogged filters can result in poor performance and increased emissions. Filters should be checked every 100 operating hours or annually. Statistics from environmental agencies show that clean air filters promote better fuel efficiency and reduce waste emissions. -
Connection and Wiring Inspection:
Connection and wiring inspections ensure that electrical components are free from corrosion and wear. Loose or damaged connections can lead to electrical failures and reduce generator reliability. Regular inspections should be performed quarterly. The Electrical Safety Foundation International (ESFI) states that faulty wiring is a leading cause of generator-related incidents. -
Load Testing:
Load testing assesses the generator’s performance under actual operating conditions. Testing should occur annually to ensure the generator can handle expected electrical loads. The U.S. Department of Energy recommends loading the generator to 75% of its maximum capacity during tests. This practice helps prevent unexpected failures when the generator is most needed. -
Professional Annual Inspections:
Professional annual inspections by certified technicians encompass all aspects of maintenance. Technicians can identify and resolve potential issues overlooked during routine checks. The National Electrical Contractors Association (NECA) suggests that annual inspections significantly reduce the risk of generator failures and extend equipment lifespan.
How Can Homeowners Safely Install and Operate a Standby Generator?
Homeowners can safely install and operate a standby generator by following proper guidelines and safety measures, which include choosing the right generator, employing qualified professionals for installation, and adhering to safety protocols during operation.
Choosing the right generator:
– Assess power needs: Homeowners should determine their essential power requirements during outages. This can include lighting, heating, and refrigeration.
– Generator size: Select a generator that meets the calculated wattage needs. According to the U.S. Department of Energy, a typical home may require between 5,000 to 20,000 watts depending on usage.
Employing qualified professionals:
– Hire licensed electricians: It is crucial to engage licensed professionals for installation. A study published by the National Fire Protection Association (NFPA) in 2022 emphasizes the importance of professional installations to avoid hazards associated with improper connections.
– Install transfer switches: A transfer switch is necessary to safely switch from utility power to generator power. The NFPA mandates this feature for compliance with safety standards.
Adhering to safety protocols:
– Ventilation: Ensure that the generator is placed in a well-ventilated area to avoid carbon monoxide (CO) buildup. The Centers for Disease Control and Prevention (CDC) indicates that CO poisoning is a serious risk associated with indoor generator use.
– Fuel storage: Store fuel safely in approved containers and away from living spaces. The Occupational Safety and Health Administration (OSHA) provides guidelines for safe storage practices.
– Regular maintenance: Conduct regular maintenance on the generator to ensure it runs effectively. Following manufacturer instructions for maintenance helps prevent operational failures.
– Emergency shutdown procedures: Homeowners should familiarize themselves with the generator’s emergency shutdown procedures. This knowledge is crucial in the event of a malfunction.
By following these guidelines, homeowners can ensure the safe installation and operation of a standby generator, enhancing their preparedness for power outages.
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