10 Best Whole House Generator of December 2025

• 5-Year limited Warranty for automatic standby generators.
• Up to whole house protection with the 200 Amp, NEMA 3R (aluminum outdoor enclosure) smart switch
• Smart, User-friendly controls. Generac’s evolution controller features a multilingual LCD display that allows you to Monitor Battery status and track maintenance intervals to ensure your generator is always in top operating condition.

Generac

• Convenient transfer switch kit, ideal for your circuitry and multi-wiring needs, is also made for reliably-fast installation in both residential and commercial applications
• Designed specifically for generators up to 7,500 maximum running watts
• 18-inch flexible conduit whip attaches easily to the load center
• Maximum single-pole circuits: 10 / Maximum double-pole circuits: 5
• Features a rugged, powder-coated steel cabinet. six combination knockouts and more

Reliance Controls

• True Power Technology delivers best-in class power quality (less than 5% THD) for smooth operation of sensitive electronics and appliances
• Includes a 200 Amp NEMA 3 (indoor / outdoor rated) whole house smart transfer switch
• Generac's Evolution Controller features LED indicators for generator status, utility power presence or maintenance required
• Tough, durable all-weather aluminum enclosure offers 3 removable sides for easy access for installation, service and maintenance
• Battery Not Included. Generac battery model 5819 sold separately.

Generac

• Compatible with all air-cooled models
• Large wheels and a wide handle take the hassle out of transportation
• Allows a single person to move the generator without additional people or tools
• Is easy to use and lifts the generator through leverage
• 2 year warranty

Generac

• Whole house 24/7 power - the Ats200 whole house transfer switch with demand control Provides seamless, managed power to your entire home during an outage
• Quietest-in-class - thanks to advanced sound dampening and a specially designed low-tone muffler, This generator operates at a residential-friendly 63 dba noise level
• Reliable - 24-volt starting system operates in sub-zero or extreme heat (between -22 Degree F and 104 Degree F) with no warming kit necessary, plus the generator performs weekly self-diagnostic tests
• Powerful - the 14-kilowatt generator provides 14, 000 watts of continuous power on propane and 12, 500 watts on natural gas, with no refueling, no manual operation and no Extension cords needed
• Champion support - includes 10-year limited with free lifetime technical support from dedicated experts

Champion Power Equipment

• Digital readout helps manage oil changes and maintenance schedule
• Features electric start, low-oil shutdown, an automatic voltage regulator and overload protection to maximize safety
• CARB and EPA III meet requirements for sale in all 50 states
• Includes wheel kit and foldable handles for easy transport
• 223cc engine provides 4,750 surge watt and 3,750 rated watt

WEN

• True power technology delivers best-in class power quality (less than 5% thd) for Smooth operation of sensitive electronics and appliances
• Includes a 200 amp NEMA 3 (indoor/ outdoor rated) whole house Smart transfer switch
• Generac evolution controller features LED indicators for generator status, utility power presence or maintenance required
• Tough, durable all-weather aluminum enclosure offers 3 removable sides for easy access for installation, service and maintenance
• Battery not included. Generac Battery 7043 5819 Sold Separately.

Generac

• Dual Fuel: Operate your 3800-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 0.6-quarts of oil (included) and has a low oil shut-off sensor
• Electric Start: Power up the 224cc Champion engine with the handy toggle switch, battery included
• Intelligauge: Keep track of voltage, hertz and run-time hours to easily monitor power output and track maintenance intervals
• Outlets: One 120V 30A RV outlet (TT-30R), one 120V 30A locking outlet (L5-30R) and two 120V 20A household outlets (5-20R) - trust Volt Guard built-in surge protector to prevent overloads
• Champion Support: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts

Champion Power Equipment

• Features Two GFCI (Ground Fault Circuit Interrupter) 5-20R 120V Household Duplex Receptacle and One L14-30R 120/240V Twist-Lock Receptacle; All Outlets Have Rubber Covers for Added Safety
• Plug-and-Play: Comes with a Remote Start Key Fob, 12V Battery Charger, Oil, an Oil Funnel, a Tool Kit, and a User's Manual to Get You Started Right Out of the Box (Minimal Assembly Required)
• Powered by a 420cc Westinghouse 4-Stroke OHV Engine Featuring a Long-Lasting Cast Iron Sleeve with Automatic Low Oil Shutdown and Digital Hour Meter. Noise Level-72 dBA
• All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA and CARB Compliant; Backed by 3-Year Limited Service, Labor, and Parts Coverage with Nationwide Customer Service Network
• 7500 Running Watts and 9500 Peak Watts; Remote Start With Included Key Fob, Electric and Recoil Start; Up to 11 Hours of Run Time on a 6.6 Gallon Fuel Tank With Fuel Gauge

Westinghouse

• Your purchase includes One DuroMax XP4400EH 4400 watt Dual Fuel Hybrid generator with Electric Start, One oil funnel, One spark plug wrench, tools set, wheels and handle kit, DC charging cables and owner’s manual
• Portable Generator dimensions: 24” L x 17" W x 17" H. Product weight: 127 lbs
• Specifications: Noise level – 69 dB. Fuel tank capacity (GASOLINE) – 3.96 gallons. Suggested tank size (PROPANE) – 20 gallons
• The ability to run on Propane or Gasoline allows the Freedom and Flexibility of Fuel Choice
• With 4,400 starting watts and 3,500 running watts, this unit can handle heavy loads from lights and a refrigerator to a home air conditioner and high amperage power tools. Operate at both 120 V and 240 V simultaneously, or at 120 only with full power

DuroMax