Generators & Engines: warranties compared
12 brands. We read every warranty so you don't have to. Checked through October 2026.
8 of 12 brands cover generators & engines in full for one year or less. The longest full coverage is 3 years, from Champion Power Equipment, Honda and Honda Power Equipment. 7 brands keep some parts covered after full coverage ends.
Every brand, side by side
- 1Champion Power Equipment43/100Full: 3 yearsNo partial coverageCheck your model's manual
- 2Honda43/100Full: 3 yearsNo partial coverage
- 3Honda Power Equipment43/100Full: 3 yearsNo partial coverage
- 4Powerhorse32/100Full: 2 yearsNo partial coverageCheck your model's manual
- 5Firman26/100Full: 1 yearPartial: to 3 yearsPartial covers: Parts
- 6Westinghouse26/100Full: 1 yearPartial: to 3 yearsPartial covers: Parts (years 2-3)Varies by model lineCheck your model's manual
- 7Westinghouse Outdoor Power26/100Full: 1 yearPartial: to 3 yearsPartial covers: Replacement parts; Emission control system
- 8DuroMax23/100Full: NonePartial: to 5 yearsPartial covers: Whole generator (iH, iHT, HX, HXT series); Whole generator (most models)
- 9Kohler23/100Full: NonePartial: to 5 yearsPartial covers: Whole generatorUnverified
- 10Generac21/100Full: 1 yearPartial: to 3 yearsPartial covers: Parts onlyVaries by model line
- 11Predator13/100Full: 3 monthsNo partial coverageVaries by model line
- 12WEN11/100Full: NonePartial: to 3 monthsPartial covers: Commercial or professional use
From each maker's published warranty. “Unverified” means we couldn't confirm the terms on the maker's own site. How we rate warranties
What these warranties often leave out
- Normal wear and tear9 of 12 brands
- Stopping working from outside causes6 of 12 brands
- Water damage5 of 12 brands
- Accidental breaks and misuse3 of 12 brands
- Batteries3 of 12 brands
- Scratches, dents and looks2 of 12 brands
How long stores give you to return it
Longest return window first, for generators & engines.
- CostcoMost itemsNo fixed deadline
- Sam's ClubMost itemsNo fixed deadline
- BJ's Wholesale ClubMost items365 days
- Camping WorldMost items90 days
- Harbor FreightMost items90 days
- WalmartMost items90 days
Show all 17 stores
- Blain's Farm & FleetUpper Midwest storesMost items90 days
- Theisen's Home Farm AutoUpper Midwest storesMost items90 days
- Ace HardwareMost items30 days
- Do it BestMost items30 days
- Tractor SupplyMost items30 days
- Murdoch's Ranch & Home SupplyMountain West storesMost items30 days
- The Home DepotGas generators and gas pressure washers7 days
- Lowe'sGas portable generators, pressure washers, chainsaws and pole saws48 hours from delivery
- Northern Tool + EquipmentGenerators, engines and gas or diesel equipment once fueled or oiledNo returns
- Family Farm & HomeGreat Lakes storesGas-powered equipment such as mowers, trimmers and generatorsNo returns
- Rural KingMidwest storesGas and diesel powered equipment (mowers, chainsaws, generators, pressure washers, tractors, ATVs/UTVs)No returns
From each store's published return policy, using its rule for generators & engines where it has one. Member and holiday extensions aren't counted. Check yours before you buy.
More Outdoor & Garden warranties
- Outdoor Furniture: warranties compared28 brands
- Smokers & Pellet Grills: warranties compared16 brands
- Lawn Mowers: warranties compared14 brands
- Garden Tools: warranties compared13 brands
- Gas Grills: warranties compared13 brands
- Hoses & Watering: warranties compared13 brands
- Hot Tubs & Swim Spas: warranties compared13 brands
- Pools & Pool Equipment: warranties compared12 brands
- Riding Mowers & Tractors: warranties compared12 brands
- Fire Pits: warranties compared11 brands
- Sheds & Outdoor Storage: warranties compared10 brands
- Outdoor Lighting: warranties compared9 brands
Questions shoppers ask
Which brand of generators & engines has the best warranty?
On paper, Champion Power Equipment scores highest, with 3 years of full coverage.
Is a long warranty on generators & engines really that long?
Often not for the whole product. Many longer warranties cover only certain parts after the first year or two, and you usually pay for the labor. The bars above show full and partial coverage separately.
Do I need to register to get the warranty?
1 of 12 brands require registration for some of their coverage, often within a set number of days. Keep your receipt either way.
Forward the receipt and I-BUY.AI tracks the return window and warranty for you.