2025 Generac 25kW Standby Generator
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Overview
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Brochure
Year2025
MakeGenerac
Model25kW Standby Generator
Product Features
Description
Standby Generator, 25 kW | 3600 RPM | CA-MA Emissions
Thousands of homeowners and business owners trust their Protector Series automatic backup generator to power their entire home or business during a power outage. A Protector Series generator senses a power outage, turns on automatically, and delivers power for your entire home, including all large appliances and sensitive electronics. Sound levels are quieter with no change in level or tone. This allows you to continue living life comfortability and keep business operating without interruption.
Features
- Quiet-Test™: Runs At A Lower, Quieter Speed For A Five-Minute Test To Ensure The System Is Running Properly While Consuming Less Fuel. Quiet-Test Mode Can Be Programmed To Run Weekly, Biweekly, Or Monthly.
- Cellular Connectivity: Reliable, Constant Connection Enables The Generator Owner To Monitor Function Using Mobile Link And The Supporting Generator Servicer Using Fleet.
- Truepower Technology: Delivers Superior Power Quality With Less Than 5% Total Harmonic Distortion For Reliable Operation Of Sensitive Electronics And Appliances.
- Surge Capacity: Designed To Start And Power Large Electrical Loads For Homes And Businesses.
- Small Footprint: Generac Liquid-Cooled Generators More Power Into A Small Footprint – Ideal When Space Is A Premium. The Neutral Styling, Color And Small Footprint Fits Unobtrusively Into Landscaping.
- Generac Designed & Built Engine: Purpose-Built Exclusively For Generator Use. Utilizes The First In Class, Dual-Valve Ultra-Low Pressure Fuel Delivery System And Intelligent Proprietary Engine Controls That Manage Over 100 Performance Functions To Ensure Peak Efficiency In All Temperature Ranges And Elevations.
- Built In The Usa*: Generac generators and engines are engineered and built in the USA. *Assembled in the USA using domestic and foreign parts.
- 24/7/365 Customer Support Team: Standing By All Day, Every Day From Our Headquarters In Wisconsin To Answer Any Questions You Might Have.
Generator Specifications
- Type: Synchronous
- Rotor Insulation: Class H
- Stator Insulation: Class H
- Telephone Interference Factor (Tif): <50
- Alternator Output Leads 1-Phase: 4 Wire
- Alternator Output Leads 3-Phase: 6 Wire
- Bearings: Sealed Ball
- Coupling: Flexible Disc
- Excitation System: Direct
Voltage Regulation
- Type: Electronic
- Sensing: Single Phase
- Regulation: ±1%
Governor Specifications
- Type: Electronic
- Frequency Regulation: Isochronous
- Steady State Regulation: ± 0.25%
Electrical System
- Battery Charge Alternator: 12 Volt 15 Amp
- Static Battery Charger: 2 Amp
- Recommended Battery (Battery Not Included): Group 26, 525 Cca
- System Voltage: 12 Volts
Generator Features
- Revolving field heavy duty generator
- Directly connected to the engine
- Operating temperature rise 135° C above 25° C ambient
- Class H insulation is NEMA rated
- All models fully prototyped tested
Enclosure Features
- Aluminum Weather Protective Enclosure: Ensures Protection Against Mother Nature. Electrostatically Applied Textured Epoxy Paint For Added Durability.
- Enclosed Critical Grade Muffler: Quiet, Critical Grade Muffler Is Mounted Inside The Unit To Prevent Injuries.
- Small, Compact, Attractive: Makes For An Easy, Eye Appealing Installation.
- Sae: Sound Attenuated Enclosure Ensures Quiet Operation
Engine Specifications
- Make: Generac
- Type: In-Line
- Cylinders: 4
- Displacement (Liters): 45778
- Bore (In / Mm): 3.05 / 77.4
- Stroke (In / Mm): 3.13 / 79.5
- Compression Ratio: 11:1
- Intake Air System: Naturally Aspirated
- Lifter Type: Hydraulic
Engine Lubrication System
- Oil Pump Type: Gear
- Oil Filter Type: Full Flow Spin-On Cartridge
- Crankcase Capacity (Qt/L): 4 / 3.8
Engine Cooling System
- Type: Closed
- Water Pump: Belt Driven
- Fan Speed (Rpm): 2,484
- Fan Diameter (In / Mm): 17.7 / 449.6
- Fan Mode: Pusher
Fuel System
- Fuel Type: Natural Gas, Propane Vapor
- Carburetor: Down Draft
- Secondary Fuel Regulator: Standard
- Fuel Shut Off Solenoid: Standard
- Lp Fuel Pressure: 5 - 14 In Water Column / 9 - 26 Mm Hg
- Ng Fuel Pressure: 5 - 14 In Water Column / 9 - 26 Mm Hg
Engine Cooling
- Air Flow (Inlet Air Including Alternator And Combustion Air In Cfm / M?/Min): 2,490 / 70.5
- System Coolant Capacity (Us Gal / L): 2 / 7.6
- Heat Rejection To Coolant (Btu Per Hr/Mj Per Hr): 112,000 / 118.2
- Maximum Operation Air Temperature On Radiator (°F / °C): 140 / 60
- Maximum Ambient Temperature (°F / °C): 122 / 50
Combustion Requirements
- low at rated power (CFM / m3 /min): 62 / 1.8
Sound Emissions
- Sound output in dB(A) at 23 ft (7 m) with generator in exercise mode*: 59
- Sound output in dB(A) at 23 ft (7 m) with generator operating at normal load*: 72
Exhaustengine Parameters
- Exhaust flow at rated output (cfm / cmm): 203 / 5.7
- Exhaust temperature at muffler outlet (°F / °C): 1,100 / 593
Power Adjustment For Ambient Conditions
- Temperature Deration: 25°C (77°F) before derate; 3% for every 10°C above 25°C (1.65% for every 10°F above 77°F)
- Altitude Deration: 1% for every 100 m above 183 m (3% for every 1,000 ft. above 600 ft.)
Engine
Engine Type | 4-cyl In-line |
Dimensions
Weight | 777 lb. (352 kg.) |
Shopping Tools
Quote by Phone

2025 Generac 25kW Standby Generator
(540) 399-1627
T & K Small Engines
21201 Yellow Bottom Road |
Lignum
VA
22726
United States
- Store Hours Open Close
- Mon - Fri: 8:00 a.m. 5:00 p.m.
- Sat: By appointment only
- Sun: Closed