Best Generac 9931 Deals of Nov 2026

Updated November 10, 2026Our site contains affiliate links for which we may be compensated.
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Generac

Generac 150 Amp Next Gen Automatic Generator Transfer Switch, SE Rated, SPD | Integrated Surge Protection Device, Service Entrance Rated, NEMA 3R Outdoor Enclosure, Fuse Control Board Generation

WHOLE-HOME STANDBY POWER FOR SINGLE-PHASE RESIDENTIAL SYSTEMS: Rated at 150 amps on a 120/240V single-phase circuit, this service entrance-rated ATS supports whole-home backup power for central AC, well pumps, water heaters, and all essential circuits
FULLY AUTOMATIC TRANSFER — NO MANUAL ACTION REQUIRED: The generator controller manages all power sensing, timing, and transfer commands automatically, so backup power activates within seconds of an outage without any intervention from the homeowner
OPEN-TRANSITION SWITCHING PREVENTS UTILITY BACKFEED: The open-transition design ensures utility and generator power are never connected simultaneously, physically blocking reverse current flow into the grid to protect utility workers and comply with NEC Article 702
FACTORY-INSTALLED WHOLE-HOME SURGE PROTECTION DEVICE: Integrated 50 kA-rated SPD redirects transient voltage spikes away from appliances and electronics during utility surges or generator transfer events — no separate surge protector installation required
NEMA 3R ALUMINUM ENCLOSURE RATED FOR OUTDOOR INSTALLATION: The corrosion-resistant aluminum enclosure with electrostatically baked powder coat deflects rain, sleet, snow, and ice, so the unit can be mounted indoors or outside at the service entrance
COMPATIBLE WITH GENERAC EVOLUTION AND POWER ZONE 200 CONTROLLERS: Engineered for single-phase Generac Home Standby and Guardian generators using Evolution or Power Zone 200 controllers, with a hardened control module that resists brownouts and power disturbances
FAST-MOUNT ENCLOSURE SYSTEM REDUCES PROFESSIONAL INSTALLATION TIME: Select models include an innovative fast-mount hanging system that can save a licensed installer 30 or more minutes, reducing labor costs compared to standard transfer switch installations
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Generac

Generac 6485 Scheduled Maintenance Kit for 20 kW Standby Generators, 999cc Engines

FITS 20KW, 22KW, 24KW, AND 26KW GENERAC STANDBY GENERATORS: Designed for air-cooled Generac, Honeywell by Generac, and Centurion by Generac standby generators with a 999cc V-Twin engine manufactured in 2013 or later
COMPLETE OEM SERVICE KIT WITH ALL REPLACEMENT PARTS INCLUDED: Contains one OEM air filter, one foam air pre-cleaner, one spin-on oil filter, and two pre-gapped spark plugs — every consumable component required for a full scheduled maintenance service
GENUINE GENERAC PARTS PROTECT ENGINE LIFE AND WARRANTY COMPLIANCE: Factory-engineered OEM components maintain the tolerances and performance standards required to keep your generator within Generac's factory warranty conditions at every service interval
INCLUDES ANGLED OIL FUNNEL, MICROFIBER CLOTH, AND REMINDER STICKER: The angled funnel prevents spills during oil changes, the microfiber cloth handles cleanup, and the maintenance tracking sticker records your next service date directly on the enclosure
SERVICE EVERY 200 HOURS OR 2 YEARS — ENGINE OIL NOT INCLUDED: Follow the factory-recommended interval to maintain reliability; generators in dusty environments may require more frequent service — purchase SAE 5W-30 full synthetic engine oil separately
STEP-BY-STEP INSTRUCTION MANUAL INCLUDED — NO SPECIAL TOOLS REQUIRED: The enclosed instruction manual guides you through each service step using standard hand tools, making this a straightforward DIY service for homeowners without professional technician experience
VERIFY YOUR ENGINE SIZE AND BUILD YEAR BEFORE ORDERING: This kit fits 999cc V-Twin engines built in 2013 or later only — check the model and serial number plate on your generator enclosure or owner's manual to confirm compatibility before purchasing
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Generac

Generac 150 Amp Next Gen Automatic Generator Transfer Switch, SE Rated, SPD | Integrated Surge Protection Device, Service Entrance Rated, NEMA 3R Outdoor Enclosure, Fuse Control Board Generation

WHOLE-HOME STANDBY POWER FOR SINGLE-PHASE RESIDENTIAL SYSTEMS: Rated at 150 amps on a 120/240V single-phase circuit, this service entrance-rated ATS supports whole-home backup power for central AC, well pumps, water heaters, and all essential circuits
FULLY AUTOMATIC TRANSFER — NO MANUAL ACTION REQUIRED: The generator controller manages all power sensing, timing, and transfer commands automatically, so backup power activates within seconds of an outage without any intervention from the homeowner
OPEN-TRANSITION SWITCHING PREVENTS UTILITY BACKFEED: The open-transition design ensures utility and generator power are never connected simultaneously, physically blocking reverse current flow into the grid to protect utility workers and comply with NEC Article 702
FACTORY-INSTALLED WHOLE-HOME SURGE PROTECTION DEVICE: Integrated 50 kA-rated SPD redirects transient voltage spikes away from appliances and electronics during utility surges or generator transfer events — no separate surge protector installation required
NEMA 3R ALUMINUM ENCLOSURE RATED FOR OUTDOOR INSTALLATION: The corrosion-resistant aluminum enclosure with electrostatically baked powder coat deflects rain, sleet, snow, and ice, so the unit can be mounted indoors or outside at the service entrance
COMPATIBLE WITH GENERAC EVOLUTION AND POWER ZONE 200 CONTROLLERS: Engineered for single-phase Generac Home Standby and Guardian generators using Evolution or Power Zone 200 controllers, with a hardened control module that resists brownouts and power disturbances
FAST-MOUNT ENCLOSURE SYSTEM REDUCES PROFESSIONAL INSTALLATION TIME: Select models include an innovative fast-mount hanging system that can save a licensed installer 30 or more minutes, reducing labor costs compared to standard transfer switch installations
Details & specs
Check Price
on Amazon.com
Disclaimer: While we make every effort to ensure accuracy, we cannot guarantee that all product specifications, pricing, discounts, and details are complete or error-free. Because information is subject to change, we recommend verifying all details directly with the retailer prior to making a purchase. As an Amazon Associate, we earn from qualifying purchases.

10 Generac 9931 deals are available from: Amazon, starting from $12.28.

The biggest discount we found is 18% on Generac 3,800 Watt Dual Fuel Portable Inverter Generator, Gas And Propane | 3,000 Running Watts, Ultra Quiet, Clean Stable Power, Home Backup, RV, Camping, Parallel Capable, 50 State Compliant (8946) at Amazon.

The lowest price we found is $12.28 while the highest is $8,241.20. Prices for the best Generac 9931 deals average at $1,879.76.