Last updated: March 2026

12.5kW

Power: 12.5kW LP / 11kW NG
Installed Cost: $7,500–$11,000
Noise: 63 dB
Weight: 427 lbs
Warranty: 10 years
Fuel: Dual-fuel (NG/LP)

Best for: Budget entry point with the best warranty in the industry. No remote monitoring.

The Champion 12.5kW is the budget entry into standby generators from the brand that, based on owner reviews, scores highest among the brands we compared. At $4,199 with a 10-year warranty — double what anyone else offers — the value proposition is straightforward.

What This Generator Keeps Running

On propane (12.5 kW): 2-ton AC (tight), refrigerator, freezer, furnace, sump pump, lighting, home office, CPAP. With 100A 16-circuit select panel.

Limitations: On NG (11 kW): central AC isn't realistic. Essentials territory.

What It Actually Costs

Unit price

$4,199

Installed

$7,500–$11,000

$4,199 with 100A ATS included: most complete budget package. A Generac 10kW with ATS runs $4,269 for less power and half the warranty.

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How Loud Is It?

63 dB. one of the quieter generators at any size. Distance not explicitly stated for this model.

How Big Is It?

49.1" × 28" × 28.3". 427 lbs.

Maintenance

Champion Milwaukee Series (717cc V-Twin). Annual service. No remote monitoring capability.

Pros & Cons

Why it wins on value

✓10-year warranty: double industry standard, no extra cost
✓$4,199 with ATS included: most complete budget package
✓63 dB: quieter than most competitors at this size
✓Free lifetime tech support
✓Consumer Reports Best Buy
✓Based on reviews, highest-rated among brands we compared (3.6/5 on PissedConsumer)
✓12.5 kW on LP gives 25% more power than Generac 10kW

What you give up

✗Zero remote monitoring: no app, no WiFi, no notifications
✗11 kW on NG: central AC isn't realistic on natural gas
✗100A select-circuit ATS means choosing 16 circuits, not whole-house
✗Not BBB accredited
✗Transfer switch quality concerns (blown fuses reported)
✗Finding Champion standby service techs may be harder

Frequently Asked Questions

Is the Champion 12.5kW a good generator?▾

Consumer Reports gave it Best Buy. Based on owner reviews, Champion scores 3.6/5 on PissedConsumer — highest among the brands we compared. 10-year warranty and price are unmatched. Downsides: no monitoring and some owners have reported ATS quality issues.

Can the 12.5kW run central AC?▾

On propane (12.5 kW) a 2-ton system is possible but tight. On NG (11 kW) no, not realistically. If AC is important, the Champion 14kW aXis is the next step.

Why doesn't Champion have monitoring?▾

Champion built their reputation on portable generators where monitoring wasn't expected. The standby line inherited that gap. The aXis 'Wi-Fi Direct' on newer models is local-only for installer setup: not cloud-based.

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