Best Home Standby Generators: 14 Picks for 2026

Refreshed Oct 23, 2026

The Generac 28kW Whole Home Generator leads this guide because it offers the highest capacity of any model we considered, and it bundles a transfer switch and cellular monitoring. To pick the rest, we compared every standby generator in our pool of 14 on capacity, fuel flexibility, and included components, using only the specifications published in the product listings. These are our recommendations; we did not run these units ourselves.

14 picks from 19 generators that match this guide with a price we can quote today, made by 14 makers. Live prices throughout, each with the moment it was read.

The list in brief

Which pick fits you?

• For whole-home backup: Choose a high-capacity model like the Generac 28kW to keep an entire large home powered during an outage. See pick 1
• For dual-fuel flexibility: If you need the option to run on natural gas or propane, consider the Champion 22kW Dual Fuel or the Generac Protector 25kW. See pick 5
• For smaller homes: A 10kW or 14kW unit from Generac can cover essential circuits without overbuilding. See pick 14

The full list of 14

1 Best overall

Generac 28kW Whole Home Generator

Type

Standby

Watts

Over 9000 W

$8,387.10 (as of 10/22/2026 23:09 PDT - Details)

View on Amazon

This Generac offers the highest capacity in our list at 28kW, and it bundles a transfer switch and cellular monitoring in one package. It is the most powerful option here and includes the two features that matter most for whole-home backup.

Pros

• 28kW capacity, the highest in this list
• Automatic transfer switch included
• Cellular capability for remote monitoring
• Brand is Generac, a well-established manufacturer

Cons

• Dual fuel operation not stated by the seller
• Likely requires professional installation and a larger fuel line

Good fit if

• Homes with high electrical loads, such as multiple HVAC systems
• Buyers who want remote monitoring without buying a separate module

Skip if

• You have a small home with minimal power needs
• You prefer a dual fuel unit for fuel flexibility

Verdict: The Generac 28kW is the top pick for whole-home backup thanks to its high capacity and all-in-one feature set.

2 Best for large homes

Generac 26kW Whole Home Generator

Type

Standby

Watts

Over 9000 W

$7,253.10 (as of 10/22/2026 23:09 PDT - Details)

View on Amazon

At 26kW, this Generac is second only to the 28kW in capacity, and it still includes a transfer switch and cellular monitoring. It is a solid choice for homes that need near-maximum backup without going to the very highest output.

Pros

• 26kW capacity
• Automatic transfer switch included
• Cellular capability
• Strong specification set from a leading manufacturer

Cons

• Dual fuel not stated
• Less capacity than the 28kW model

Good fit if

• Large homes with central air conditioning and electric heating
• Buyers who want remote monitoring and a bundled transfer switch

Skip if

• You need more than 26kW for simultaneous high loads
• You want a dual fuel option

Verdict: The Generac 26kW is an excellent choice for large homes that need high capacity without paying for the absolute top of the range.

3 Best with cellular monitoring

Generac 24kW Whole Home Generator

Type

Standby

Watts

Over 9000 W

$6,875.10 (as of 10/22/2026 23:09 PDT - Details)

View on Amazon

With 24kW of capacity, a transfer switch, and cellular capability, this Generac provides a strong balance. The integrated cellular monitoring is a standout feature for homeowners who want to check status from a phone app.

Pros

• 24kW capacity
• Automatic transfer switch included
• Cellular capability for remote alerts
• Good mid-to-high power level

Cons

• Dual fuel not stated
• Not the highest capacity in this list

Good fit if

• Homeowners who travel and want remote status updates
• Mid-to-large homes with typical electrical demands

Skip if

• You need more than 24kW
• You prefer a simpler, nonconnected unit

Verdict: The Generac 24kW stands out for its built-in cellular monitoring, making it the pick for tech-savvy homeowners.

4 Best dual fuel high capacity

Generac Protector Series 25kW Natural Gas or Propane Standby Generator

Type

Standby

Fuel

Dual Fuel

Watts

Over 9000 W

$16,694.75 (as of 10/22/2026 23:09 PDT - Details)

View on Amazon

This Generac Protector Series runs on natural gas or propane and provides 25kW of power. It is the only dual fuel option among the higher-capacity picks, making it versatile for areas with uncertain fuel supply.

Pros

• Dual fuel (natural gas or propane)
• 25kW capacity
• Single phase output for home use
• A premium line from Generac

Cons

• No transfer switch mentioned in the listing
• No cellular monitoring mentioned

Good fit if

• Homes with access to both natural gas and propane
• Buyers who want the flexibility to switch fuels during shortages

Skip if

• You need a bundled transfer switch
• You want remote monitoring included

Verdict: The Generac Protector 25kW is the best choice for those who want high capacity and the option to run on two fuel types.

5 Best dual fuel with transfer switch

Champion 22,000-Watt Dual Fuel

Type

Standby

Fuel

Dual Fuel

Watts

Over 9000 W

$6,399.00 (as of 10/22/2026 22:44 PDT - Details)

View on Amazon

This Champion provides 22kW and runs on liquid propane or natural gas, and it comes with a 200-amp automatic transfer switch in the same package. It is a rare combination of capacity, fuel flexibility, and a bundled transfer switch.

Pros

• Dual fuel (liquid propane or natural gas)
• 22kW capacity
• 200-amp automatic transfer switch included
• Complete system in one listing

Cons

• No cellular monitoring
• Brand may be less familiar to some buyers

Good fit if

• Buyers who want a full system without buying parts separately
• Homes that need both fuel options and a robust transfer switch

Skip if

• You want remote monitoring capability
• You prefer a brand with a broader nationwide service network

Verdict: The Champion 22kW offers the best blend of dual fuel operation and a built-in 200-amp transfer switch.

6 Best air-cooled design

Kohler 26RCAL-200SELS Air-Cooled Standby Generator

Type

Standby

Watts

Over 9000 W

$8,349.00 (as of 10/22/2026 23:28 PDT - Details)

View on Amazon

This Kohler model is air-cooled, which is a simpler and often lighter design compared to liquid-cooled units. It still delivers 26kW and includes a 200-amp transfer switch.

Pros

• 26kW capacity
• Air-cooled engine, which is generally easier to maintain
• 200-amp transfer switch included
• From Kohler, a respected generator manufacturer

Cons

• No dual fuel option
• No cellular monitoring

Good fit if

• Buyers who prefer air-cooled engines for simplicity
• Large homes that want high capacity without liquid cooling complexity

Skip if

• You need dual fuel capability
• You want remote monitoring

Verdict: The Kohler 26RCAL is the best air-cooled standby generator in this list, offering strong capacity and a transfer switch.

7 Best with 200-amp transfer switch

20kW Standby Generator with 200amp TS

Type

Standby

Watts

Over 9000 W

$6,848.00 (as of 10/23/2026 00:36 PDT - Details)

View on Amazon

This Kohler model provides 20kW of power and comes with a 200-amp transfer switch, making it a straightforward choice for homes that need a complete transfer solution without extra purchases.

Pros

• 20kW capacity
• 200-amp transfer switch included
• From Kohler, a trusted name
• Simpler sizing for mid-to-large homes

Cons

• No dual fuel option
• No cellular monitoring

Good fit if

• Homes that already have a separate monitoring system
• Buyers who want a single package with a 200-amp switch

Skip if

• You need more than 20kW
• You want dual fuel flexibility

Verdict: The Kohler 20kW is a solid mid-range option with a generous 200-amp transfer switch.

8 Best air-cooled alternative

RCA 26,000-Watt Air-Cooled Whole House Generator

Type

Standby

Watts

Over 9000 W

$7,399.00 (as of 10/23/2026 00:00 PDT - Details)

View on Amazon

This RCA-branded unit (with Kohler listed as the brand) delivers 26kW from an air-cooled engine. It offers high capacity without the complexity of liquid cooling and does not include a transfer switch, so you would purchase one separately.

Pros

• 26kW capacity
• Air-cooled design
• Good for very large homes

Cons

• No transfer switch included
• No dual fuel option
• No cellular monitoring

Good fit if

• Buyers who already have a transfer switch
• Those who want air-cooled high capacity at a lower upfront cost

Skip if

• You need a bundled transfer switch
• You prefer remote monitoring

Verdict: The RCA 26kW is a strong air-cooled choice for those who already have a transfer switch installed.

9 Best for 22kW capacity

Generac 22kW Whole Home Generator

Type

Standby

Watts

Over 9000 W

$6,506.10 (as of 10/22/2026 23:09 PDT - Details)

View on Amazon

This Generac offers 22kW, a popular size for many homes, and includes a transfer switch and cellular monitoring. It is a well-rounded package without the highest price in the range.

Pros

• 22kW capacity
• Automatic transfer switch included
• Cellular capability
• Good balance of power and features

Cons

• No dual fuel
• Not the highest capacity

Good fit if

• Mid-to-large homes with typical loads
• Homeowners who want a complete package with monitoring

Skip if

• You need more than 22kW
• You want fuel flexibility

Verdict: The Generac 22kW is an excellent all-around choice for many homes, bundling power, transfer switch, and monitoring.

10 Best for mid-size homes

Generac 18kW Whole Home Generator

Type

Standby

Watts

Over 9000 W

$5,975.10 (as of 10/22/2026 23:09 PDT - Details)

View on Amazon

At 18kW, this Generac is well suited to medium-sized homes with typical electrical needs, and it still includes a transfer switch and cellular monitoring.

Pros

• 18kW capacity
• Automatic transfer switch included
• Cellular capability
• Good size for many suburban homes

Cons

• Less capacity than larger models
• No dual fuel option

Good fit if

• Homes with a central AC but not electric heating
• Buyers who want a balanced system with monitoring

Skip if

• You have a large home with multiple high-demand appliances
• You need dual fuel

Verdict: The Generac 18kW is a practical pick for mid-size homes, offering essential features in a sensible package.

11 Best with cellular at 14kW

Generac 14kW Whole Home Generator

Type

Standby

Fuel

Dual Fuel

Watts

Over 9000 W

View on Amazon

This Generac 14kW unit provides cellular monitoring but does not include a transfer switch. It is a good option if you already have a transfer switch installed or prefer to buy one separately.

Pros

• 14kW capacity
• Cellular capability for remote monitoring
• Lower capacity suitable for smaller homes

Cons

• No transfer switch included
• No dual fuel option

Good fit if

• Buyers with an existing transfer switch
• Small homes that want to monitor generator status remotely

Skip if

• You need a transfer switch in the box
• You have high power demands

Verdict: The Generac 14kW with cellular is a smart choice for those who already have a transfer switch and want remote monitoring.

12 Best dual fuel compact

Honeywell 14kW Home Standby Generator

Type

Standby

Fuel

Dual Fuel

Watts

Over 9000 W

View on Amazon

This Honeywell runs on natural gas or propane and provides 14kW of power. It is a compact dual fuel option that is easier to install in smaller spaces.

Pros

• Dual fuel (natural gas or propane)
• 14kW capacity
• Automatic backup power

Cons

• No transfer switch mentioned
• No cellular monitoring

Good fit if

• Homes with limited space for a generator
• Buyers who want the flexibility of two fuels

Skip if

• You need a transfer switch in the package
• You require higher capacity

Verdict: The Honeywell 14kW is a compact dual fuel generator that suits smaller homes and those who value fuel flexibility.

13 Best compact with transfer switch

Champion Power Equipment 100837 14kW Home Standby Generator System

Type

Standby

Watts

Over 9000 W

$5,499.00 (as of 10/22/2026 22:44 PDT - Details)

View on Amazon

This Champion offers 14kW and includes a 200-amp automatic transfer switch, making it a complete system in a smaller footprint. It is a good fit for homes that want a full package without moving up to a much larger unit.

Pros

• 14kW capacity
• 200-amp automatic transfer switch included
• Compact size likely makes installation easier
• Complete system in one listing

Cons

• No dual fuel option
• No cellular monitoring

Good fit if

• Smaller homes that want a bundled transfer switch
• Buyers who prefer a single purchase without extras

Skip if

• You need more than 14kW
• You want remote monitoring

Verdict: The Champion 14kW with its 200-amp transfer switch is a great compact complete system.

14 Best for small homes

Generac 10kW Whole Home Generator

Type

Standby

Watts

Over 9000 W

$3,896.10 (as of 10/22/2026 23:09 PDT - Details)

View on Amazon

This Generac provides 10kW of power, the lowest capacity in our list, but it still includes a transfer switch and cellular monitoring. It is ideal for powering essential circuits during an outage.

Pros

• 10kW capacity, sufficient for essential loads
• Automatic transfer switch included
• Cellular capability
• Potential lower installation cost due to smaller size

Cons

• Lower capacity may not run all large appliances simultaneously
• No dual fuel option

Good fit if

• Small apartments, condos, or homes with minimal power needs
• Buyers who want a complete system for essentials

Skip if

• You need to run central AC or electric heat
• You have a large home

Verdict: The Generac 10kW is the best pick for small homes or budget-conscious buyers who only need to keep basics running.

The specs, compared

Why these made the list

Our pool contained 14 home standby generators from major manufacturers. We shortlisted based on three criteria: stated capacity from the product name, whether the listing specified dual fuel operation, and whether an automatic transfer switch or cellular monitoring was included. We also favored models from established brands and those in new condition. Prices shown on this page are live from the retail listings and may change. We have not tested any of these units; all comparisons are based on the specifications published by the seller.

Things to weigh before buying

How much power do you need?

Start by listing the appliances you want to run during an outage. Add up the running watts and the starting watts of motor-driven items like air conditioners and well pumps. A general rule is that a 10kW to 14kW generator can cover refrigerators, lights, and a few circuits, while homes with central air conditioning or multiple high-load devices may need 20kW or more. The capacity is stated in each product name, so compare those numbers to your calculated load.

Natural gas, propane, or both?

Most standby generators run on natural gas, which is delivered through a permanent connection. Others can switch to propane using a tank. If your home has access to both, a dual fuel model gives you flexibility during fuel shortages. Check the specs to see if a unit is listed as dual fuel. If not, the seller may not state the fuel type, so you would need to confirm with the manufacturer or installer.

Transfer switch: automatic and manual

A transfer switch is a safety device that disconnects your home from the utility grid and connects it to the generator. An automatic transfer switch (ATS) senses a power outage and starts the generator on its own, which is what makes a standby generator hands-off. Some models include the ATS in the box; others do not. If a generator does not include one, you must buy a separate switch and have it installed by a professional electrician.

Monitoring and connectivity

Many modern generators offer cellular monitoring, letting you check status, receive alerts, and run diagnostic tests from a smartphone app. If you travel often or want peace of mind, this feature is valuable. Others rely on a basic control panel at the unit. Compare the specifications to see if cellular capability is included, since adding it later may not be possible on every model.

Safety: carbon monoxide and placement

Standby generators are installed outdoors, but you must still follow carbon monoxide (CO) safety rules. The U.S. Consumer Product Safety Commission (CPSC) warns that generators produce deadly CO and should never be operated inside a home, garage, or basement. Place the generator well away from windows, doors, and vents, and install battery-operated CO alarms on every level of your home. Always have the generator installed by a qualified professional to ensure proper venting and electrical connections.

Installation and permits

A standby generator is a permanent fixture that requires a natural gas line (if applicable), a concrete pad, and an electrical connection. You will need a licensed electrician and often a local permit. Some municipalities have noise or placement restrictions. Factor in installation costs when budgeting, as they can add to the total price. Before buying, check with your utility and local codes to understand requirements.

Questions

How big a standby generator do I need for my house?

The size depends on your home's electrical load. A 10kW to 14kW unit is usually enough for a small home with essential circuits like lights, refrigerator, and a few outlets. Homes with central air conditioning, electric water heating, or a well pump may need 20kW or more. Add up the running and starting watts of the appliances you want to power and match that to the generator's capacity. It is always better to oversize slightly than to risk overloading.

What is a transfer switch and why is it important?

A transfer switch is an electrical device that safely separates your home's wiring from the utility grid when the generator is supplying power. It prevents backfeeding, which could injure utility workers or damage equipment. An automatic transfer switch (ATS) starts the generator automatically when the grid power goes out, so you do not need to manually switch. Some standby generators include the ATS; if not, you must purchase and install one separately.

Can I run a standby generator on propane?

Yes, but only if the generator is designed for dual fuel operation. Models that are labeled dual fuel can run on natural gas or liquid propane. If a unit is not marked dual fuel, the seller may not specify the fuel type, and you should assume it is natural gas only unless you verify with the manufacturer. Propane tanks offer an alternative when natural gas lines are unavailable or during outages when gas pressure may drop.

Do I need a professional to install a standby generator?

Yes. Standby generators must be installed by a licensed electrician and sometimes a plumber or gas fitter. The installation involves connecting the generator to your fuel source, mounting it on a compliant pad, and wiring it to your electrical panel through a transfer switch. Permits are often required, and local codes may dictate placement and noise limits. Professional installation ensures safety and correct operation, and it is usually required for warranty coverage.

How can I prevent carbon monoxide poisoning with a standby generator?

Standby generators are installed permanently outdoors, but you must still keep them away from windows, doors, and vents. The CPSC recommends installing battery-operated carbon monoxide alarms on every level of your home and outside sleeping areas. Never operate any generator indoors or in an attached garage. Follow the manufacturer's clearance distances and have the unit serviced regularly to ensure exhaust systems work properly.

Latest changes

• 2026-10-04: First published.

Sources

• CPSC Generators and Engine-Driven Tools
• CDC Carbon Monoxide Poisoning Basics
• EPA Carbon Monoxide's Impact on Indoor Air Quality
• EIA Natural Gas Explained