Diesel Generator for Sale
Quick Sizing Estimator
Enter your estimated total power requirements to get a sizing recommendation. For critical applications, consult with a professional electrician.
💰 Typical Price Ranges (2024)
Portable (5-15 kW)
Wheeled, gas start
$3K - $10K
Home Standby (15-30 kW)
Automatic transfer switch
$8K - $20K
Commercial (30-150 kW)
Three-phase capability
$15K - $80K
Industrial (150-500 kW)
Heavy-duty continuous
$80K - $300K
* Prices are for generator only. Add $3K-$40K for professional installation depending on complexity.
🏆 Top Diesel Generator Brands
Premium Tier
- • Cummins - Industry leader, 30K-50K hour life
- • Caterpillar - Industrial powerhouse
- • Kohler - Quiet residential specialists
- • Generac - Home standby market leader
Value Tier
- • Perkins - Solid reliability, lower cost
- • John Deere - Agricultural heritage
- • Kubota - Compact and reliable
- • Yanmar - Budget-friendly option
🔧 Maintenance Requirements
• Monthly: Exercise run (30 min at 50%+ load)
• Every 100 hours / Annually: Oil & filter change, fuel filter, air filter, battery check, load test
• Every 400 hours / 2 years: Coolant replacement, fuel system service
• Every 1,000 hours / 3-5 years: Valve adjustment, injector service, battery replacement
Professional maintenance contracts available: $400-$1,200/year depending on size
📋 New vs Used Decision Guide
Choose NEW if:
- ✓ Critical backup application (hospitals, data centers)
- ✓ Long-term ownership (20+ years)
- ✓ Latest emissions compliance required
- ✓ Manufacturer warranty important
- ✓ Financing needed (better rates)
Choose USED if:
- ✓ Budget-constrained (save 40-70%)
- ✓ Temporary/short-term need
- ✓ Non-critical backup application
- ✓ Immediate availability essential
- ✓ Experienced in generator maintenance
🛒 Where to Find Diesel Generators
• Authorized Dealers: Cummins, CAT, Kohler, Generac dealer networks (new + service)
• Industrial Equipment Distributors: Nationwide suppliers with multiple brands
• Online Marketplaces: MachineryTrader, EquipmentTrader (used equipment)
• Auction Sites: Ritchie Bros, IronPlanet (heavy equipment auctions)
• Rental Companies: United Rentals, Sunbelt (used rental fleet sales)
⚠️ Always get pre-purchase inspection for used units ($300-$800 well spent!)