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First Source Energy is a dealer and full service provider fo
Cummins Generators
Explore our CUMMINS products at First Source Houston, your go-to destination in Houston, Texas. We offer a range of solutions including: Home Standby Generators for situations when utility power fails or is intermittent. Our selection also features RV Generators, both installed and portable, perfect for travel and off-grid power needs. Additionally, we provide Portable Generators ideal for camping, tailgating, and other short-term emergency events like storms and hurricanes. Trust First Source Houston TX for all your generator needs.
Best Selling Home Standby Generators
Our Best Selling Home Standby Generator
The QuietConnect™ series of home standby generators is enhanced with features – like weather protective, sound insulated enclosures – for a best-in-class 65dB or lower noise, approximately the same volume as a normal conversation.
NOTE: Automatic Transfer Switch must be purchased separately.
Automatic Transfer Switch (purchased separately)
When utility power fails, your home standby generator starts automatically and the automatic transfer switch flips your home electrical supply away from the utility to the generator power.
The generator provides power to vital appliances like the refrigerator, freezer, air conditioner, heater, medical devices, sump pump and also wall outlets.
After utility power is restored, the ATS will disconnect the power from the generator and reconnect your home to utility power, requiring you to do nothing. Your generator will then automatically cool down and shut down until it’s needed again.
We offer a full line of transfer switches to match your generator.
Best Selling RV Generators
Installed RV Generators
Installed RV generators are always available when you need it, without having to connect or plug anything in.
Inverter Generators
The new Onan QG 2800i / 2500i LP is a high efficiency gasoline generator with reduced noise and vibration levels, while providing a returnless EFI system to improve performance.
Portable Generators
Portable Generators
Portable generators are independent of your RV or motor home.
They can be used anywhere such as a cabin or remote campsite where no power is available.
Onan P9500DF Portable Generator
Running watts: 7500 gas | 6750 propane
Peak watts: 9500 gas | 8550 propane
Noise level: As low as 74 dBA
- Push button and remote start - Pull cord backup
- Dual fuel with the flip of a switch - Easily switch from gas to propane with a fuel capacity of 6.6 gallons
- Essential data display - VFT Data Center displays volts, frequency, run time, maintenance reminders, and lifetime hours
- Fuel efficient - 6.6 gallon fuel tank that runs 12 hours at 25% load on gasoline, 9 hours on a 20 lb. propane tank
Great for:
- Large appliances
- Home emergency backup
- Food trucks
- General contractor work
- Heavy-duty chores
Portable Inverter Generators
Onan P4500iDF Portable Inverter Generator
Running watts: 3,700 gas | 3,330 propane
Peak watts: 4,500 gas | 4050 propane
Noise level: As low as 52 dBA
- Push button and remote start - Pull cord backup
- Dual fuel with the flip of a switch - Easily switch from gas to propane with a fuel capacity of 3.6 gallons
- Lightweight - 104.7 lbs, with a telescopic handle and wheels, easy to manage
- Fuel efficient - 3.4 gallon fuel tank that runs 15.6 hours at 25% load on gasoline, 16.9 hours on a 20 lb. propane tank
Great for:
- Medium appliances
- RV use
- Motor sports
- Camping