Table Of Content
- GUARDIAN 22KW GENERATOR FEATURES AND BENEFITS
- From 800 watts to 2 Megawatts
- How much does a home generator cost?
- Remote Monitoring (5%)
- What size generator for a whole house?
- Generac Guardian 3-Phase 20kW Automatic Standby Generator Wi-Fi Enabled
- Prepare for the next power outage with the #1 selling brand of home standby generators
- Home generator costs by size

You can read more about our editorial guidelines and the whole house generators methodology for the ratings below. If you decide to take the plunge for a whole-house generator, given your investment in installation, you’ll want a unit that performs well, which is where our ratings come in. If you wish to share feedback with us about product selection, pricing, ordering, delivery, or other customer service issues, please do not submit this feedback through a product review. True Power™ Technology delivers best-in-class power quality with less than 5 percent total harmonic distortion for clean, smooth operation of sensitive electronics and appliances.
GUARDIAN 22KW GENERATOR FEATURES AND BENEFITS

Generac's comprehensive suite of residential energy solutions added to management software for home builders, remodelers and contractors. You'll never have to run an extension cord through a window or door again. Your Generac home backup generator safely delivers power right to your home's electrical panel.
Best Whole House Generators Of April 2024 – Forbes Home - Forbes
Best Whole House Generators Of April 2024 – Forbes Home.
Posted: Tue, 09 Apr 2024 07:00:00 GMT [source]
From 800 watts to 2 Megawatts
Selecting whole house provides a backup generator recommendation based on your home's size and corresponding outlets and lighting requirements and assumes natural gas appliances in the baseline calculation. You can add these items below to accurately reflect your home's specific backup power needs. Whether a power failure is simply not an option, or you just want an advantage over your competitors during a power outage, Generac standby generators make sure you're open for business during a power outage. Whole house generators either use liquid propane from a tank or natural gas from a utility line (or custom tank). Propane is cheaper and less contaminating, but using natural gas means you won’t have to refill a tank (although this isn’t an option if you’re looking to go off the grid).
How much does a home generator cost?
On the other hand, manual transfer switches are more budget-friendly and necessitate manual intervention to redirect power. Assess your essential appliances and systems that need backup power during outages. This evaluation will help you determine the generator’s capacity that suits your needs without overspending.
If your home or small business needs dependable 3-phase power back-up look no further than this Generac Guardian. This generator has all the features you’ve come to love of a Generac, easy-installation, Wi-Fi control and monitoring, and durable, all-weather construction that’s built to last. With a noise level of 67 dbA, this unit’s noise is impressively low for the level of power output. The only thing missing from this package is an automatic transfer switch, which is sold separately. The best small whole-house generators in our ratings put out less than 10,000 watts of power but often run longer on propane than larger standby generators. Note that while smaller models are less expensive to purchase, the installation costs are comparable to a larger model, so your overall savings on the project might not be as large as you expect.

What size generator for a whole house?
With an automatic voltage regulator, efficient alternator and smartphone app control over Wi-Fi, you never have to worry about damaging sensitive electronics with surges nor under-powering your high-voltage appliances. The generator can also be run on a low-speed mode to reduce noise, save fuel and tighten your control. With a few clicks of your mouse you can find the optimal home backup power solution for your needs. Use our interactive Home Generator Sizing Calculator to find your system.
Whole house generators can help you disconnect from the grid entirely or keep your appliances running during extended power outages or emergencies when a portable or standby generator would otherwise fail. The purchase of a home backup generator will give you peace of mind for years to come, but it’s a big investment. That is why we want to give you as much information as possible so you can make the right decision based on your needs and budget. The options below will help you understand how the entire process works, what your financing options are, and how to choose the right backup power solution. Whole home natural gas or liquid propane generators cost $2,000 to $6,000 without installation. When shopping for a whole house generator, it’s important to make sure you purchase the right transfer switch.
Prepare for the next power outage with the #1 selling brand of home standby generators
Each generator was evaluated based on whether or not it offered the high temperature shutdown option. Whether or not each generator offered an electric start feature gained or lost a generator points to amount to 5% of the total ranking. For the comfort of the homeowner, 10% of the total ranking went to noise level (dbA). Each generator’s noise level was evaluated and from there was scored based on the loudness (or softness) of its average level.
Home generator costs by size
Choosing the right whole house generator based on your budget involves careful consideration of your power needs and available options. While these generators offer excellent backup power solutions, your choice should align with your financial constraints. To determine how much power you’ll need for your generator, you can either use an online wattage calculator, the wattage information on your appliances or your electrical bill. We recommend multiplying the total wattage of your appliances by 1.5 to give yourself a safe margin of error. A small to medium-size house in the U.S. typically uses a minimum of 5,000 to 7,000 watts, so you should expect most generators to have a minimum of 8,500 to 10,000 watt outputs.
Be sure to purchase the right type of generator for the fuel you’re looking to use, or check to see if it can be easily converted from one fuel source to the other (most can be). Generac Guardian 3-Phase 20kW Automatic Standby Generator Wi-Fi Enabled runs about $5,599 on average. The Generac PowerPact 7,500 Watt Standby Generator runs about $2,049 on average.
Generac home backup generators are the most cost effective on the market. Installation costs vary by system size, installation considerations, and local building codes. We recommend you getting a free assessment from a Generac dealer near you.
CR members can read on for reviews of the best home standby generators in our ratings. Mobile Link™ Remote Monitoring FREE with every Guardian Series Home standby generator allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet, or PC. Easily access information, such as the current operating status and maintenance alerts. Learn more about Mobile Link24/7•365 Customer Support Team standing by all day, every day from our headquarters in Wisconsin to answer any questions you might have.
Generac has signed an agreement to acquire ecobee Inc., a pioneer in the smart thermostat market. Generac announced a minority equity investment in WATT Fuel Cell Corp., a leading developer and manufacturer of low emissions Solid Oxide Fuel Cell stacks and systems. The two companies plan to collaborate on the design and development of low-emission resiliency solutions. The expansion supports the trend of the lawn and landscape market to focus on heavy-duty, electric-powered equipment.
One of the most powerful air-cooled generators on the market today, the Guardian® Series 22 kW automatic home standby generator can provide whole-house backup power for many homes. A whole-home generator costs $30 to $170 per day to run all day depending on the size and fuel source. Whole-house 15 to 20 kW standby generators consume 133 to 330 cubic feet of natural gas or 3.16 to 3.45 gallons of liquid propane per hour.