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Last updated: March 2026

PowerProtect 22kW standby generator

PowerProtect 22kW

Power
22kW LP / 22kW NG
Installed Cost
$12,000–$16,000
Noise
68 dB
Weight
465 lbs
Warranty
7 years
Fuel
Dual-fuel (NG/LP)

Best for: 2,500–3,500 sq ft on natural gas. Best value per kW: 22kW on both fuels via NGMax.

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$6,037 for 22 kW on both propane and natural gas. That's $274 per kilowatt; the lowest cost per kW of any standby generator in its class.

What This Generator Keeps Running

3-4 ton AC (with 45 kVA motor starting), electric water heater alongside AC, full kitchen, refrigerator, freezer, all lighting, home office, everything a 22kW on NG typically can't: because this one doesn't lose power on NG.

Limitations: Level 2 EV charger + 5-ton AC simultaneously. Load management handles most other combinations.

What It Actually Costs

Unit price

$6,037

Installed

$12,000–$16,000

$82 less than the Generac 22kW at unit level. Best value per kW in the industry.

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How Loud Is It?

68 dB: 1 dB over Generac (67). Barely perceptible difference between these two. 3 dB over Cummins (65) is noticeable.

How Big Is It?

46.5" × 26.8" × 28.4". 465 lbs. same as the 18kW (shared platform).

Maintenance

Same Vanguard M61 as the 18kW. Same parts, same service, same cost.

Pros & Cons

Why NG homeowners love it

  • ✓22 kW on both fuels. NGMax advantage most valuable at this popular size
  • ✓$274/kW: lowest cost per kilowatt in the 22kW class
  • ✓7-year comprehensive warranty
  • ✓45 kVA motor starting
  • ✓Dual 200A ATS option for complex electrical setups
  • ✓Vanguard commercial-grade engine

The tradeoffs

  • ✗68 dB: louder than Generac (67) and Cummins (65)
  • ✗Paid monitoring ($100/yr)
  • ✗B&S customer service reputation
  • ✗Bankruptcy/PE ownership concerns
  • ✗Weekly test run failures reported by some owners

Frequently Asked Questions

Is the B&S 22kW really the best value?▾
On a cost-per-kilowatt basis, yes: $274/kW is the lowest in the 22kW class. Factor in the 7-year warranty ($495+ value vs Generac), and the total value proposition widens. The tradeoff is paid monitoring and weaker customer service.
How does 22kW on NG compare to Generac's 19.5kW?▾
2.5 kW more usable capacity on natural gas. The difference between comfortably running a 3-ton AC + electric water heater simultaneously, versus doing the same and running lean.
Should I worry about B&S going out of business?▾
B&S is operational, manufacturing, and honoring warranties. KPS Capital Partners acquired them in 2020. The product is well-regarded. The concern is customer service and PE ownership uncertainty: not whether they'll exist next year.

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