# Best Home Standby Generators (2026): Real Costs

Compare the best home standby generators, Generac, Kohler, Briggs, Cummins and Champion, with the real installed cost of $12,000 to $18,000.

- Canonical: [https://generators.guide/guides/best-home-standby-generators](https://generators.guide/guides/best-home-standby-generators)
- Markdown: [https://generators.guide/guides/best-home-standby-generators.md](https://generators.guide/guides/best-home-standby-generators.md)
- Published: 2026-07-04
- Updated: 2026-07-04
- Author: Anna Persson

## Quick answer

The best all-around home standby generator is a Generac Guardian, because nothing else matches its dealer and parts network. But the machine is the smaller half. Air-cooled whole-house units run $3,000 to $6,000 for the box and $12,000 to $18,000 installed, and that installed number barely changes between brands. Kohler, Briggs & Stratton, Cummins, and Champion are all credible, so the real tie-breakers are warranty length and which brand your local dealer actually services.

The best all-around home standby generator for most people is a Generac Guardian, because no other brand comes close to its dealer and parts network. But the machine is the smaller half of the decision. A common 22kW to 24kW air-cooled unit runs $3,000 to $6,000 for the box and $12,000 to $18,000 installed, once you add the pad, gas line, transfer switch, permits, and two trades.

Generac, Kohler, Briggs & Stratton, Cummins, and Champion all build credible whole-house units. We don't sell generators. We save you from buying the wrong one, and in this lane the wrong one is usually the right brand at the wrong size, or the right unit with a dealer three hours away. That installed number barely moves between badges, so the real tie-breakers are warranty, dealer coverage, and how the unit behaves in your yard.

If you are still weighing standby against a portable, start with [standby vs portable](/guides/standby-vs-portable-generator). If you want the full money picture first, read [the real cost of a whole-house generator](/guides/real-cost-of-a-whole-house-generator), because that decision moves your budget more than the brand does.

## Quick Answer: The Best Home Standby Generators Compared

| Brand and line | Air-cooled range | What the standard warranty actually covers | CPSC recall record, home standby | Typical installed |
|---|---|---|---|---|
| Generac Guardian | 10-28kW | 5 years. Parts, labor and travel in years 1 and 2, parts only in year 3, engine short block and alternator parts only in years 4 and 5. No hour cap in the US | One, in 2006: a flex fuel hose on Guardian air-cooled units, about 20,000 units, no incidents reported | $12,000-$18,000 |
| Kohler RCA | 14-26kW | 5 years or 2,000 hours, parts, labor and travel for the full period | One, in 2018: RXT-JFNC 100ASE automatic transfer switch, about 6,600 units, fire hazard | $12,000-$18,000 |
| Briggs & Stratton PowerProtect | 13-26kW | Advertised as 7 years parts, labor and travel, 10 years on the 26kW and DX models. Briggs publishes no warranty document | None found in CPSC records for any Briggs generator | $12,000-$18,000 |
| Cummins QuietConnect | 13-20kW | 5 years or 2,000 hours, but parts, labor and travel only in years 0 to 2. Years 3 to 5 are parts only | One, in 2007: stationary natural gas and propane units, about 3,300 units, fuel shut-off valve | $12,000-$18,000 |
| Champion aXis | 14-22kW | 10 years or 2,000 hours. Parts, labor and mileage in years 1 and 2, parts only in years 3 to 10. Requires dealer activation and service records | None found for home standby | $12,000-$18,000 |

### How we compared, and when

Every cell above was read on August 16, 2026 from a primary document, not from a retailer listing. Five criteria, in the order they change a buying decision:

1. **Air-cooled range** from each manufacturer's current product listing or spec sheet, not from last year's brochure.
2. **Warranty terms** from the manufacturer's own warranty PDF where one exists, read past the headline number to the year-by-year schedule.
3. **Recall record** from the CPSC SaferProducts database, filtered to generators, and separated into home standby and portable because they are different products with different records.
4. **Rated output on natural gas and on propane** from the current spec sheet, because the badge on the box is the propane number.
5. **Published sound level in dB(A)**, with the distance and the load condition the manufacturer states.

Two things that table shows and the marketing does not. Notice what does not change down the installed column: air-cooled whole-house units land in the same $12,000 to $18,000 band regardless of badge, because most of that number is the pad, the gas line, the transfer switch, permits, and the two trades. The machine itself runs $3,000 to $6,000 and varies less than the marketing suggests.

And notice that the headline warranty number is the least useful thing in the warranty column. Champion's 10 years and Generac's 5 both collapse to parts-only after year 2. Kohler's 5 years is the only one on this list that carries parts, labor and travel the whole way through, which makes it a stronger 5 than Generac's 5 and arguably a stronger 5 than Champion's 10. Read the schedule, not the badge.

## Generac Guardian: The Default for a Reason

Generac is the brand most installers stock, most electricians know, and most parts depots carry. When a control board fails in year four, that network is the difference between a two-day fix and a two-week wait. The Guardian air-cooled line now runs 10kW to 28kW, and the 28kW is a shipping product with its own spec sheet rather than a preview. Units are WiFi-enabled through Mobile Link so you see a fault before your neighbor does.

On noise, Generac publishes 67 dB(A) at 23 feet at normal load and 55 dB(A) in Quiet-Test low-speed exercise mode on the current 22kW to 28kW units. The weekly test runs at a reduced engine speed against a 3,600 rpm normal operating speed, and the exercise duration is adjustable from 5 to 20 minutes with 5 minutes set at the factory.

**Right for:** almost anyone who wants the safest bet on service and parts, anywhere in the country.

**Skip it if:** you have a strong local Kohler or Briggs dealer and you want a longer standard warranty or a quieter unit.

**The one tradeoff:** Generac ships the shortest standard warranty in this group at 5 years, and it front-loads it hard. Read Generac's own warranty schedule and years 1 and 2 cover parts, labor and travel, year 3 drops to parts, and years 4 and 5 cover only engine short block and alternator parts. Travel is capped at 100 miles and three hours per occurrence. The one place Generac beats Kohler and Champion outright is that the US warranty carries no hour cap, where both of those stop at 2,000 hours. And because there are far more Generacs in the ground than anything else, you will find far more complaint threads too. Volume cuts both ways.

## Kohler: Quieter, Aluminum, and Worth It Near a Dealer

Kohler builds a quiet, corrosion-resistant unit and backs it well. The air-cooled RCA line runs 14kW to 26kW, in an aluminum enclosure with Kohler's corrosion-resistant Power Armor finish that shrugs off salt air, which matters on the coast. One naming note: Kohler's power business is now branded Rehlko, and its technical documents live under that name, though the generators are still sold as Kohler.

The quiet reputation is real but model-specific, and the gap inside Kohler's own line is bigger than the gap between brands. Kohler publishes 56 dB(A) during engine exercise for the 26RCA and 66 dB(A) for the 20RCA, both measured at 23 feet. That is a 10 dB(A) difference between two units from the same family. If a silent yard is why you are buying Kohler, buy the 26RCA.

The standard warranty is 5 years or 2,000 hours, covering parts, labor, and dealer travel for the entire period, and you can extend it to 7 or 10 years. That full-period labor and travel coverage is the best structure in this roundup, and it is the reason a Kohler 5 outperforms a Champion 10 in the years you are most likely to need a repair.

**Right for:** buyers with a good local Kohler dealer who want the quieter self-test and the aluminum build, especially near salt water.

**Skip it if:** the nearest Kohler dealer is far away. Thin coverage turns a warranty into a waiting room.

**The one tradeoff:** the dealer and parts network is real, but thinner than Generac's across much of the country, so confirm who services it locally before you sign.

## Briggs & Stratton: More Warranty From a Known Engine Name

Briggs & Stratton advertises more coverage than the premium defaults. The PowerProtect air-cooled line spans 13kW to 26kW in four steps, 13, 18, 22 and 26, and Briggs markets 7 years covering parts, labor and travel, with 10 years on the 26kW and the DX models.

One caveat we will not paper over: Briggs is the only brand here that publishes no warranty document at all. Its support pages point you to the operator's manual, and its spec sheets sit behind a viewer that will not open to the public. So the 7-year figure is marketing copy we can read, not legal terms we can read. Ask your dealer for the actual warranty statement in writing before you let it decide the purchase.

On the corporate question buyers keep asking: Briggs & Stratton went through a Section 363 asset sale to KPS Capital Partners in September 2020. The home standby line is alive, sold today under Briggs & Stratton Energy Solutions, with current product pages and an active dealer library. It is not a discontinued brand.

**Right for:** buyers who want a long warranty without paying for an extension, from a familiar engine brand.

**Skip it if:** your area has few Briggs standby dealers. Warranty length means little if nobody nearby honors it quickly.

**The one tradeoff:** the home-standby dealer footprint is smaller than Generac's, so parts and service can run slower depending on where you live.

## Cummins QuietConnect: Built for Hard Cold

Cummins is a serious engine and genset name, and its home standby line brings real cold-weather engineering. The QuietConnect air-cooled range covers 13kW, 17kW, and 20kW, and Cummins publishes 65 dB(A) at 23 feet at normal load across the air-cooled line.

The cold-weather spec is better than it is usually reported, including by us until we re-read the sheet. Cummins states that the standard generator is designed to operate down to 0F out of the box, and that the Extreme Cold Weather models perform down to -40F out of the box with no kit needed. A standard unit going below 0F needs the extreme cold weather kit, part A054B984. So the factory cold models are a -40F product, not an 0F product.

The standard warranty is 5 years or 2,000 hours, extendable to 10, but the footnote matters: parts, labor and travel are covered in years 0 to 2, and years 3 to 5 are parts only. That is the same shape as Generac's, so do not table Cummins' 5 against Briggs' advertised 7 as if they were like for like.

**Right for:** buyers in cold climates who want the Cummins name and a unit engineered for sub-zero starts, with a Cummins dealer nearby.

**Skip it if:** there is no local Cummins home-standby dealer. Cummins is strongest in commercial and RV power, and residential dealer density is thinner in many areas.

**The one tradeoff:** the air-cooled lineup tops out at 20kW, so a large all-electric home may push you to a liquid-cooled unit, which is a bigger and more expensive project.

## Champion aXis: The Value Pick With the Longest Warranty

Champion is the value pick, and it backs that with the longest headline warranty in the category. The aXis line covers 14kW and 22kW, rated 12.5kW and 19.8kW on natural gas, at 62 and 67 dB(A) respectively at 23 feet, and the 24-volt starting system is rated to operate down to -22F.

Read the warranty terms rather than the number. Champion's own document says 10 years or 2,000 hours, whichever comes first, from successful activation by an authorized Champion home standby dealer. Years 1 and 2 cover parts, labor and mileage. Years 3 through 10 are parts only. The transfer switch carries 24 months, counted from factory shipment rather than from your install date. It is still a long warranty, and the parts coverage in years 6 through 10 is genuinely more than anyone else offers, but it is not ten years of the coverage the first two years give you.

Its Power Line Carrier tech lets the generator talk to the transfer switch over the existing L1 and L2 conductors between the two, which can simplify the install. Champion's marketing describes this as using your home's existing wiring, which is looser than its own installation manual.

**Right for:** budget-minded buyers who want the longest standard warranty and a potentially simpler, cheaper install.

**Skip it if:** you want the deepest dealer and parts network or the longest track record. Champion is newer to whole-house standby than the others.

**The one tradeoff:** a long warranty is only as good as the service behind it, and Champion's home-standby dealer and repair network is less established than Generac's, so weigh local support before you commit.

## Before You Buy Standby: Is a Portable Plus Interlock Enough?

Here is the recommendation no standby dealer will offer you. If your outages are occasional and short, a couple of six-hour blips a year, a whole-house standby is a lot of money asleep in the yard. A $700 to $2,500 portable wired to your panel through a $400 to $850 interlock kit keeps the essentials on for a fraction of a $12,000 to $18,000 install. It is not automatic and it is not silent, but for the right outage pattern it is the better buy, not a compromise. We lay out both lanes in [standby vs portable](/guides/standby-vs-portable-generator) and the legal connection in [interlock kit vs transfer switch](/guides/interlock-kit-vs-transfer-switch).

And if your outages are short and you care more about silence and indoor safety than multi-day runtime, a home battery may beat both. For a week-long hurricane outage a generator still wins on fuel and runtime, but for the six-hour variety the math often favors a battery. We cover it straight in [generator vs home battery](/guides/generator-vs-home-battery), and our sister site [homebattery.guide](https://homebattery.guide) has the battery shortlist.

## Size It Before You Shortlist

The most expensive mistake in this lane is buying the wrong kW. Oversize and you pay more up front and burn more fuel on every weekly test. Undersize and your AC or well pump trips the unit on startup. Run your loads through [what size generator do I need](/guides/what-size-generator-do-i-need) before you take a single dealer quote, so you walk in knowing whether you need 18kW, 22kW, or 26kW. Then compare the two brands most buyers land on in [Generac vs Kohler](/guides/generac-vs-kohler).

When you are ready to match a brand to a vetted local installer, start with the [brand directory](/brands), and use the [sizing tools](/tools) to check capacity before a salesperson sizes it for you.

## Frequently Asked Questions

### What is the best home standby generator brand?

For most homeowners it is Generac, because its dealer and parts network is the largest in the country by a wide margin, which means faster service almost anywhere. Kohler, Briggs & Stratton, Cummins, and Champion are all credible alternatives, and the right one usually comes down to which brand has a strong dealer near you and how long a warranty you want.

### How much does a whole-house standby generator cost installed?

Plan for $12,000 to $18,000 installed for a typical 22kW to 24kW air-cooled unit, even though the machine itself is only $3,000 to $6,000. The rest is the concrete pad, gas line sizing, a possible meter upgrade, the automatic transfer switch, permits, and the electrician and plumber. Get two or three quotes after a site survey, not before.

### Is Generac better than Kohler?

Both are credible, and the installed cost is the same for either. Generac wins on dealer and parts network reach, so service is faster in more places. Kohler counters with a quieter self-test and an all-aluminum enclosure that suits coastal, salt-air homes. If you have a strong local Kohler dealer, it is a real alternative. The full breakdown is in [Generac vs Kohler](/guides/generac-vs-kohler).

### Which standby generator has the best warranty?

Champion has the longest headline at 10 years, and Briggs advertises 7, but the headline is the wrong thing to compare. Read the schedules and Champion pays labor only in years 1 and 2, Generac only in years 1 and 2, and Cummins only in years 0 to 2. Kohler is the outlier: its 5 years or 2,000 hours covers parts, labor and travel for the entire period, which is the strongest structure on this list even though it is the shortest term. Champion and Kohler both cap at 2,000 hours; Generac's US warranty has no hour cap. Longer coverage only helps if a dealer nearby will honor it.

### Are Champion standby generators any good?

Yes, especially for the price and the parts coverage. Champion aXis units carry the longest headline warranty in the category, 10 years or 2,000 hours, and a Power Line Carrier design that can simplify the install. Three conditions are easy to miss: the clock starts only at successful activation by an authorized Champion dealer, labor is covered only in years 1 and 2, and the transfer switch gets 24 months counted from factory shipment rather than your install date. The other catch is that Champion is newer to whole-house standby than Generac or Kohler, so its dealer and repair network is less established. Confirm local support before you buy.

### Do I really need a standby generator, or is a portable enough?

It comes down to your outage pattern. If you lose power for days at a time, a standby earns its $12,000 to $18,000 with automatic switchover and unlimited fuel. If you lose power for a few hours a few times a year, a $700 to $2,500 portable plus a $400 to $850 interlock covers it for a fraction of the price. Match the spend to the outages, not the fear.

## What we could not verify

- **Dealer and service location counts per brand.** No manufacturer publishes a national count of authorized home standby service points, and the dealer locators return results by ZIP code rather than a total. The dealer-network claims on this page are qualitative for that reason. Check your own ZIP on each brand's locator before you decide.
- **Briggs & Stratton's warranty document.** Briggs publishes no generator warranty PDF and its spec sheets sit behind a viewer that does not open to the public. The 7-year and 10-year figures here are read off Briggs' own product pages as marketing copy, not off legal terms.
- **The "70 percent market share" figure for Generac.** It traces to Generac's 2010 IPO prospectus, where the company described it as its own estimate based primarily on internally generated data, and Generac has not restated a share figure in an SEC filing since 2012. We do not use it as a fact on this site.
- **cpsc.gov recall pages block automated retrieval.** The recall records above were pulled from the CPSC SaferProducts API rather than the HTML recall pages, which return 403. The recall URLs are CPSC's own and load normally in a browser.
- **Machine and installed price bands.** The $3,000 to $6,000 and $12,000 to $18,000 figures are this site's own bands built from the six state cost pages and manufacturer catalogues. The national cost aggregators that publish averages block automated retrieval, so nothing on this page is sourced to one.

## Sources

- [Generac: Home Standby Generators product listing](https://www.generac.com/residential-products/standby-generators/)
- [Generac: air-cooled standby generator spec sheet, 22kW to 28kW (Part No. A0005151077, Rev. C 04/29/2026)](https://productmanuals.generac.com/api/manualfiles/G0072610/A0005151077/0)
- [Generac: 22kW Guardian Series Home Standby Generator, model G0072600](https://www.generac.com/residential-products/standby-generators/gaseous/standby-generator-22kw-7260/)
- [Generac: Five Year Limited Warranty for Air-Cooled Standby Generators (Part No. 0K2374, Rev. D 09/14)](https://www.generac.com/globalassets/products/residential/standby-generators/warranty/5-year-limited-warranty-air-cooled-standby-generator-warranty.pdf)
- [Kohler: 26RCA and 26RCAL home standby spec sheet (document G4-315)](https://resources.kohler.com/power/kohler/residential/pdf/g4315.pdf)
- [Kohler: 20RCA and 20RCAL home standby spec sheet (document G4-272)](https://resources.kohler.com/power/kohler/residential/pdf/g4272.pdf)
- [Kohler: Operation Manual, 14RCA, 20RCA and 26RCA with RDC2 controller (TP-7092)](https://resources.kohler.com/power/kohler/residential/pdf/tp7092.pdf)
- [Briggs & Stratton Energy Solutions: Residential Standby Generators](https://energy.briggsandstratton.com/en-us/products/residential-standby-generators)
- [Briggs & Stratton: announcement of the sale to KPS Capital Partners, September 2020](https://www.briggsandstratton.com/en-us/news-room/briggs-and-stratton-announces-sale-to-kps-capital-partners)
- [Cummins: QuietConnect RS13A, RS17A, RS20A and RS20AC spec sheet](https://www.cummins.com/calculator/cummins-generator-calculator/spec-sheets/RS20A-EN.pdf)
- [Champion Power Equipment: 10 Year Limited Warranty, air-cooled home standby](https://www.championpowerequipment.com/wp-content/uploads/2018/02/Warranty-10Yr-HSB-EN.pdf)
- [Champion Power Equipment: aXis Whole House fact sheet, 14kW and 22kW](https://www.championpowerequipment.com/wp-content/uploads/2024/10/aXis-Whole-House-Fact-Sheet.pdf)
- [CPSC SaferProducts recall database, generator recalls](https://www.saferproducts.gov/RestWebServices/Recall?format=json&ProductName=generator)
- [CPSC: recall of fuel hoses sold with Generac Guardian home generators (2006)](https://www.cpsc.gov/Recalls/2006/CPSC-Generac-Power-Systems-Inc-Announce-Recall-of-Fuel-Hoses-Sold-with-Guardian-Home-Generators)
- [CPSC: Kohler recalls automatic transfer switches for Kohler generators due to fire hazard (2018)](https://www.cpsc.gov/Recalls/2018/Kohler-Recalls-Automatic-Transfer-Switches-for-Kohler-Generators-Due-to-Fire-Hazard)
- [Generac Holdings: Form 10-K for fiscal year 2025 (market position and home standby penetration)](https://www.sec.gov/Archives/edgar/data/1474735/000143774926004568/gnrc20251231_10k.htm)