--- product_id: 590884430 title: "Generac 22,500 Starting Watt Portable Gas Generator" brand: "generac" price: "¥2823275" currency: JPY in_stock: true url: https://www.desertcart.jp/products/590884430-generac-22-500-starting-watt-portable-gas-generator store_origin: JP region: Japan --- # 22,500 starting watts 9-hour runtime @ 50% load COsense automatic safety shutoff Generac 22,500 Starting Watt Portable Gas Generator **Brand:** generac **Price:** ¥2823275 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your life with unstoppable energy and smart safety! ## Quick Answers - **What is this?** Generac 22,500 Starting Watt Portable Gas Generator by generac - **How much does it cost?** ¥2823275 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/590884430-generac-22-500-starting-watt-portable-gas-generator) ## Best For - generac enthusiasts ## Why This Product - Trusted generac brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Safety First:** COsense carbon monoxide detection continuously monitors and automatically shuts down the generator to keep your environment safe. - • **Clean & Safe Energy:** TruePower Technology ensures less than 5% total harmonic distortion, protecting your sensitive electronics and smart devices. - • **Built to Move & Last:** Heavy-duty steel frame with never-flat 12-inch wheels for rugged durability and easy transport across any terrain. - • **Effortless Reliability:** Push-button electric start with included battery means instant power when you need it—no manual priming required. - • **Powerhouse Performance:** Delivers a massive 18,000 running watts and 22,500 starting watts to keep your home and jobsite fully powered without compromise. ## Overview The Generac GP18000EFI portable gas generator delivers industry-leading 18,000 running watts and 22,500 starting watts, perfect for whole-home backup and demanding jobsite power. Featuring TruePower Technology for clean, stable electricity, an efficient 816cc EFI engine providing up to 9 hours runtime at half load, and COsense safety that automatically shuts down on dangerous carbon monoxide levels. Its rugged steel frame and never-flat wheels ensure durability and portability, while push-button electric start offers hassle-free operation. Backed by a 3-year residential warranty, this generator is engineered for modern professionals who demand reliable, safe, and powerful energy on the go. ## Description The Generac GP18000EFI is Generac's highest-wattage portable generator, delivering 18,000 running watts and 22,500 starting watts for whole-home backup power, demanding jobsite operations, and emergency preparedness. When an outage strikes, it provides the capacity to run central air conditioning, well pumps, refrigerators, freezers, lighting, and critical appliances at the same time. Clean power for every device you own. TruePower Technology holds total harmonic distortion below 5%, producing the clean, stable output required to safely operate sensitive electronics — including home office equipment, entertainment systems, and powered medical devices — right alongside heavy-duty loads. This makes the GP18000EFI a reliable power solution for modern households that depend on electronics as much as appliances. An engine built around fuel efficiency. The 816cc G-Force OHVI engine with Electronic Fuel Injection (EFI) continuously adjusts fuel delivery to match actual load demand. The result is reduced fuel consumption and up to 9 hours of runtime at 50% load from the 14.2-gallon steel tank. An integrated fuel gauge removes guesswork, and an hour meter with maintenance resets helps protect the engine long-term. Always-on CO protection. COsense Technology monitors carbon monoxide levels throughout operation and triggers an automatic shutoff the moment dangerous concentrations are detected. A visual alert activates simultaneously. No manual monitoring is required — protection is built in and always active. The GP18000EFI is compatible with the Generac HomeLink Manual Transfer Switch for whole-home backup capability. The 120/240V 50A receptacle supports RV connections, and all seven outlets are circuit-breaker protected for added safety under load. The push-button electric start requires no manual priming — the battery ships in the box. ## Features - HOME BACKUP AND JOBSITE POWER: Produces 18,000 running watts and 22,500 starting watts to keep HVAC systems, refrigerators, sump pumps, and power tools running during outages or high-demand worksites - TRUEPOWER TECHNOLOGY FOR SENSITIVE ELECTRONICS: Maintains less than 5% total harmonic distortion (THD) so laptops, televisions, smart home devices, and medical equipment run safely without voltage damage - ELECTRIC START WITH 22,500-WATT STARTING CAPACITY: Push-button electric start with included battery and 22,500 starting watts handle motor-driven equipment — air conditioners, well pumps, and compressors — without struggle - COSENSE CARBON MONOXIDE DETECTION — STOPS, ALERTS, SAVES: Continuously monitors CO levels and automatically shuts down the generator if dangerous concentrations are detected, protecting everyone nearby - 816CC EFI ENGINE FOR EXTENDED RUNTIME: Generac's G-Force 816cc Electronic Fuel Injection engine delivers optimized fuel delivery at every load, providing up to 9 hours of runtime at 50% load on the 14.2-gallon tank - 7 CIRCUIT-BREAKER PROTECTED OUTLETS: Includes a 120/240V 50A RV-ready outlet, (2) 120V 20A GFCI duplex outlets, a 120/240V 30A locking receptacle, and a 120V 30A locking outlet for simultaneous multi-device use - HEAVY-DUTY FRAME WITH NEVER-FLAT WHEELS: A hardened 1¼-inch steel tube cradle and 12-inch never-flat wheels provide structural durability and effortless transport across your property, job site, or in any emergency - WHAT'S INCLUDED: Generac GP18000EFI 18,000W portable gas generator, electric start battery, never-flat wheel kit, and owner's manual — backed by a 3-year residential limited warranty ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CK2MPX3F | | Additional Features | Portable | | Best Sellers Rank | #227,835 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #595 in Outdoor Generators | | Brand | Generac | | Brand Name | Generac | | Color | No Finish | | Customer Reviews | 4.1 out of 5 stars 21 Reviews | | Engine Displacement | 816 Cubic Centimeters | | Engine Type | 816cc EFI Engine | | Frequency | 50 Hz | | Fuel Type | Gasoline | | Ignition System Type | Electronic | | Included Components | Generator, Owner's manual | | Item Dimensions L x W x H | 58.5"L x 30.9"W x 36.5"H | | Item Type Name | Portable Generator | | Manufacturer | Generac | | Manufacturer Part Number | GP18000EFI | | Model Name | GP18000EFI | | Model Number | 8917 | | Output Wattage | 18000 Watts | | Power Source | Fuel Powered | | Recommended Uses For Product | Residential | | Running Wattage | 18000 Watts | | Runtime | 9 hours | | Starting Wattage | 22500 Watts | | Tank Volume | 14.2 Imperial Gallons | | Total Power Outlets | 3 | | UPC | 696471101324 | | Unit Count | 1.0 Count | | Voltage | 120 Volts | | Warranty Description | 3-year residential warranty | | Wattage | 18000 watts | ## Product Details - **Brand:** Generac - **Color:** No Finish - **Fuel Type:** Gasoline - **Included Components:** Generator, Owner's manual - **Output Wattage:** 18000 - **Power Source:** Fuel Powered - **Recommended Uses For Product:** Residential - **Special Feature:** Portable - **Voltage:** 120 Volts - **Wattage:** 18000 watts ## Images ![Generac 22,500 Starting Watt Portable Gas Generator - Image 1](https://m.media-amazon.com/images/I/817W9Lms94L.jpg) ![Generac 22,500 Starting Watt Portable Gas Generator - Image 2](https://m.media-amazon.com/images/I/81qO9wtHAuL.jpg) ![Generac 22,500 Starting Watt Portable Gas Generator - Image 3](https://m.media-amazon.com/images/I/71n1HahwHdL.jpg) ![Generac 22,500 Starting Watt Portable Gas Generator - Image 4](https://m.media-amazon.com/images/I/81YnfOkwNUL.jpg) ![Generac 22,500 Starting Watt Portable Gas Generator - Image 5](https://m.media-amazon.com/images/I/812zyAsXMNL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - Generac 8917 GP18000EFI 18,000-Watt Gas-Powered Electric-Start Portable Generator with Cosense & EFI Engine, Transfer Switch Compatible - GEARit 30-Amp Generator Extension Cord (25 Feet) 4-Prong 120/250-Volt 7500W, NEMA L14-30P/L L14-30R, 10 Gauge SJTW Locking Power Cord for Manual Transfer Switch, Portable Generators, Power Outage 25ft - Reliance Controls Generators Up to 7,500 Running Watts PB30 30-Amp NEMA 3R Power Inlet Box, Gray --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/590884430-generac-22-500-starting-watt-portable-gas-generator](https://www.desertcart.jp/products/590884430-generac-22-500-starting-watt-portable-gas-generator) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-01*