Last updated: March 2026

26RCA

Power: 26kW LP / 24kW NG
Installed Cost: $14,000–$20,000
Noise: 67 dB (56 dB exercise)
Weight: 625 lbs
Warranty: 5 years
Fuel: Dual-fuel (NG/LP)

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

625 pounds. The Kohler 26RCA is the heaviest residential standby generator you can buy. But the spec that makes it genuinely unique isn't the weight: it's the exercise noise: 56 dB. That's the quietest weekly test run of any standby generator on the market.

What This Generator Keeps Running

26 kW on propane handles a large home completely: 4–5 ton AC, electric water heater, full kitchen, all lighting, everything. On NG (24 kW), still more capacity than a Generac 22kW on propane.

Limitations: Very few scenarios exceed 26 kW in a residential setting. Multiple Level 2 EV chargers + 5-ton AC + electric range simultaneously would be the edge case.

What It Actually Costs

Unit price

$7,299

Installed

$14,000–$20,000

$14,000–$20,000 installed: essentially the same range as Generac 26kW and B&S 26kW. The Kohler premium disappears at this size.

Get Free Quotes for the 26RCA

Get Free Quotes Not Sure on Size?

30 seconds. No phone call. No commitment.

How Loud Is It?

56 dB exercise / 67 dB full speed. 56 dB is quieter than a normal conversation. At 50 feet, roughly 44 dB: quieter than most refrigerators.

How Big Is It?

47" × 26.2" × 32.2". 625 lbs: requires a properly reinforced pad and delivery crew prepared for the weight.

Maintenance

Kohler CH1006 (999cc V-Twin). Same service schedule as the 14RCA and 20RCA.

Pros & Cons

What's good

✓56 dB exercise mode: quietest weekly test from any brand, any size
✓625 lbs of premium construction
✓24 kW on NG: retains more capacity than Generac's 26kW (22.5)
✓181 mph wind-rated enclosure
✓Free 10-year warranty promotion
✓At 26kW, Kohler's price premium effectively disappears

What's not

✗625 lbs requires careful delivery planning: narrow paths are a problem
✗67 dB at full speed during outages: louder than Cummins (65) and Generac (67 tied)
✗Transfer switch sold separately: always
✗39 kVA motor starting is lower than B&S 26kW (65.5 kVA)
✗OnCue Plus app issues persist
✗This is Kohler's ceiling: no residential option above 26kW

Frequently Asked Questions

Is 56 dB really that quiet?▾

Yes. Quieter than a normal conversation (60 dB), about the level of a quiet office. At your neighbor's property line, roughly 44 dB: quieter than most kitchen appliances. No other standby generator exercises this quietly.

Kohler 26RCA vs Generac 26kW?▾

Same installed cost range. Kohler is 107 lbs heavier, has the quietest exercise (56 vs 57 dB Quiet-Test), and retains 24 kW on NG vs Generac's 22.5. Generac has a larger dealer network and is lighter for easier placement.

Why is the motor starting lower than B&S?▾

Kohler 26RCA: 39 kVA. B&S 26kW: 65.5 kVA. If you have very large motor loads (multiple AC compressors starting simultaneously), B&S handles those surges with more authority. For most residential loads, 39 kVA is adequate.

Get Pricing for Your Home

Connect with licensed installers in your area.

Get Free Quotes for the 26RCA

30 seconds. No phone call. No commitment.

Based on verified specs. OffGrid Compare is independent: no brand deals, no manufacturer affiliations. Why we built this →