OffGrid Compare

Kohler Generators

3 models from $9,000 to $20,000 installed

Last updated: March 2026

Kohler is the premium choice in standby generators. They've been making generators since 1920 — over a century — and they build them like it. Heavier enclosures, beefier engines, and a reputation for durability that puts them squarely at #2 behind Generac. You'll pay 15–20% more than a comparable Generac. Whether that premium is worth it depends on how much you value build quality over selection.

The Company

Founded 1873 (first generator 1920). Spun off as Rehlko in September 2024, now majority-owned by Platinum Equity. Kohler Co; retains minority stake. Home generator line still uses the Kohler brand name.

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Which Kohler Is Right for You?

Kohler 14RCA

14RCA

14kW LP / 12kW NG69 dB

$9,000–$13,000 installed

1,500–2,000 sq ft homes where premium build quality matters more than price.

Kohler 20RCA

20RCA

20kW LP / 18kW NG69 dB

$11,000–$16,000 installed

2,000–3,000 sq ft homes. Premium whole-house pick. Randy's generator.

Kohler 26RCA

26RCA

26kW LP / 24kW NG67 dB

$14,000–$20,000 installed

3,000+ sq ft homes. Heaviest residential standby on the market at 625 lbs.

Warranty

5-year / 2,000-hour limited. Currently offering a FREE 10-year warranty with qualifying purchases: a significant deal worth $1,400+. Ask your dealer if it's still running.

Monitoring

OnCue Plus included at no cost. Alexa and Google Assistant integration. The app was recently updated and lost push notification capability: a step backward that hasn't been fully fixed.

Pros & Cons

What Kohler does well

  • ✓Premium build quality: heaviest units in every size class.
  • ✓Based on 300+ owner reviews, Kohler scores 4.4/5 on ConsumerAffairs.
  • ✓100+ years in power generation. Admiral Byrd took Kohler to Antarctica.
  • ✓PowerBoost technology for large AC compressor startups.
  • ✓Free 10-year warranty promotion (if still active).

Where Kohler falls short

  • ✗15–20% price premium over Generac at comparable sizes.
  • ✗Only 3 residential sizes (14, 20, 26 kW): gaps at 10, 18, 22, 24, 28.
  • ✗Expensive repairs: controller replacement: $1,200–$5,000.
  • ✗Transfer switch always sold separately ($600–$800 extra).
  • ✗OnCue Plus lost push notifications in recent app update.

Frequently Asked Questions

Are Kohler generators worth the extra cost?▾
If build quality and longevity are your top priorities, yes. Kohler units are heavier, use more robust materials, and based on owner reviews tend to score higher on satisfaction. The current free 10-year warranty promotion also tips the value equation. If you're price-sensitive or need a size Kohler doesn't offer, Generac is the better fit.
How much does a Kohler generator cost?▾
$4,899–$7,299 for the unit. $9,000–$20,000 fully installed (including transfer switch, labor, pad, gas line, and permits). The 20RCA runs about $11,000–$16,000 installed.
Is Kohler now called Rehlko?▾
The corporate parent is now Rehlko (since September 2024), owned by Platinum Equity. The home generator products still carry the Kohler brand name. Same engineers, same factory, same product: different corporate structure.
Kohler vs Generac: which is better?▾
Generac wins on selection (7 sizes vs 3), dealer network (9,200+), and price. Based on owner reviews, Kohler tends to score higher on satisfaction, and the current 10-year warranty promotion adds value. Most buyers pick Generac for practicality. Buyers who value quality over price lean Kohler.

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Sources & Citations

Claim / StatisticSource
Kohler owner reviews (4.4/5 from 300+ reviews)consumeraffairs.com(accessed 2025-03)
Kohler Power rebranded to Rehlko (Sept 2024)rehlko.com(accessed 2025-03)
PissedConsumer generator brand reviewspissedconsumer.com(accessed 2025-03)
ConsumerAffairs generator reviewsconsumeraffairs.com(accessed 2025-03)
U.S. Energy Information Administration (fuel costs)eia.gov(accessed 2025-03)

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