Briggs & Stratton PowerProtect 22kW
Home Standby Generator
$6,037

Briggs & Stratton

Briggs & Stratton PowerProtect 22kW

4.4(60 reviews)

Briggs' PowerProtect 22kW has one spec nobody else in the class matches: NGMax tuning delivers the full 22,000 watts on natural gas — no derate — where Generac's 22kW drops to 19.5kW and Kohler's 20kW to 18kW. If your home runs on NG, that's effectively a size-class upgrade for free. The commercial-grade Vanguard 993cc V-twin (Briggs' premium engine line) drives it, the aluminum enclosure is rated for 186-mph hurricane winds, and the 7-year parts/labor/travel warranty beats the standard 5-year offers. So why isn't it everywhere? Owner threads point to the thin dealer network, slower parts distribution since Briggs' 2020 bankruptcy and KPS acquisition, and low retail visibility — Lowe's is the main storefront. At 68 dBA normal / 64 dBA idle-mode it's mid-pack for noise.

Price
$6,037
Running Watts
22,000W
Fuel
NG/LP
Best For
Natural-gas homes that want maximum NG output per dollar and a longer warranty than the big two.

Specifications

Running Watts
22,000W
Starting Watts
22,000W
Runtime
Continuous (runs on home NG/LP supply); full 22kW on both LP and NG (NGMax)
Type
Home Standby Generator
Fuel
NG/LP
Noise
68 dB
Outlets
None — hardwired via automatic transfer switch (40783 bundle adds 200A ATS)
Transfer-Switch Ready
Yes
Weight
465 lbs
Warranty
7-year limited
Model
040786

Highlights

Full 22kW on natural gas7-year warrantyVanguard commercial engine

Pros

  • No NG derate — 22kW on either fuel, unique in class
  • 7-year parts, labor, and travel warranty
  • Vanguard 993cc commercial engine with strong 45kVA starting
  • Enclosure rated for 186-mph winds
  • 16-second weekly quiet test barely disturbs anyone
  • Usually undercuts Generac 24kW package pricing

Cons

  • Dealer and service network is the thinnest of the majors
  • Parts availability has been slower since the KPS acquisition
  • 68 dBA normal operation is mid-pack, not quiet
  • Few retailer reviews — smaller installed base to learn from
  • Transfer switch extra on this SKU
Generac Guardian 22kW
$5,999
Home Standby Generator
4.7(9,200)

For years the best-selling home standby generator in America, and the sheer volume of owner reviews shows why: the 22kW carries most whole homes — two AC units with load management — and every electrician and gas fitter in the country has installed one. The G-Force 1000 engine and 67 dB noise level are unremarkable but proven; owners report units sailing through week-long outages after hurricanes. The flip side of ubiquity is that the complaint threads are equally deep: Evolution controller replacements, dealers backlogged after storms, and Generac support that owners describe as polite but powerless. The newer 24kW (7209/7210) has largely replaced it at similar money, but the 7042 remains widely stocked, slightly cheaper, and the known quantity — a big deal when your installer has done fifty of them.

America's best-selling standbyWhole-house power for most homesEvery installer knows it
NG/LP22,000W running67 dBTransfer-Switch Ready
Best for: Whole-house backup buyers who want the most-installed, most-understood generator on the market.
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Cummins QuietConnect RS20A
$5,926
Home Standby Generator

The RS20A is what owners buy when the nightly drone of a 70 dB generator is a dealbreaker: Cummins holds it to 65 dB at 23 feet — dishwasher territory — while still starting a 5-ton air conditioner and managing four loads with its built-in intelligent load control. The same QSJ999G V-twin as the RS13A runs harder here, delivering 20kW on propane and 18kW on natural gas, and it ships cold-weather-ready to 0°F out of the box. Owner reviews read like Kohler's best: uneventful, reliable, quiet enough that neighbors ask if it's running. The trade-offs also mirror the RS13A — sparse residential dealer coverage makes pre-purchase service planning essential, stock frequently slips to pre-order, and the app is functional but bare-bones. For sound-sensitive neighborhoods it's arguably the class benchmark.

65 dB — quietest in classStarts a 5-ton ACBuilt-in 4-load management
NG/LP20,000W running65 dBTransfer-Switch Ready
Best for: Noise-sensitive neighborhoods and HOAs that still need full whole-house starting power.
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Kohler 20kW RCA
$5,699
Home Standby Generator
4.7(500)

The 20RCA is Kohler's volume whole-house unit and the direct rival to Generac's 22/24kW, built around the bigger CH1000 V-twin. Its party trick is 41kVA of motor-starting capacity — owners regularly confirm it starts a 5-ton AC without dropping the rest of the house, which smaller-surge competitors need load-shedding modules to manage. The RDC2 controller has a strong reliability reputation, and long-term owners (this platform has been around for years) report exceptionally boring, dependable service — the best compliment a standby can get. Trade-offs are the familiar Kohler ones: 18kW on natural gas, 70 dB at full-speed operation is on the loud side, OnCue Plus monitoring trails Generac's app, and you may wait longer for both the unit and a certified installer depending on your region.

41kVA starts a 5-ton ACProven RDC2 controllerCommercial CH1000 V-twin
NG/LP20,000W running70 dBTransfer-Switch Ready
Best for: Whole-house buyers with big AC loads who want maximum motor-starting muscle and proven long-term reliability.
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