Best Portable Generators for Home Backup Power

When the power goes out, a portable generator keeps your furnace running, your fridge cold, and your phones charged. For winter storm preparedness, it’s one of the most valuable pieces of equipment you can own.

This guide covers what size generator you need, the best models for home backup, and critical safety information.

Quick Picks

How to Size a Generator

Step 1: List your essential loads

Step 2: Add your running watts Example: Furnace (400) + Fridge (150) + Lights (30) + Phone (10) = 590 running watts

Step 3: Add highest starting watts Furnace starting surge: 800W Total needed: 590 running + 800 starting = ~1400 watts minimum

Recommendation: For most homes, a 2000-3500W inverter generator handles furnace + fridge + lights comfortably.

Inverter vs Conventional Generators

For home backup: Inverter generators are worth the premium. They’re quieter (neighbors will thank you), more fuel-efficient, and safer for sensitive electronics.

Top Generators for Home Backup

Honda EU2200i — Best Overall

The Honda EU2200i is the gold standard for portable inverter generators. It’s whisper-quiet, bulletproof reliable, and sips fuel.

Specs:

• Running watts: 1800W
• Starting watts: 2200W
• Noise: 48-57 dB (quieter than conversation)
• Runtime: 8.1 hours at 25% load
• Weight: 47 lbs

Why it’s the best:

• Legendary Honda reliability
• Parallel-capable (link two for 4400W)
• Incredible fuel efficiency
• 3-year warranty
• Excellent resale value

Drawbacks:

• Premium price
• May need parallel kit for large loads

Best for: Those who want the best and can afford it.

Champion 3400W Dual Fuel — Best Value

The Champion 3400 offers more power than the Honda at half the price, plus it runs on gas or propane.

Specs:

• Running watts: 3100W (gas) / 2790W (propane)
• Starting watts: 3400W (gas) / 3060W (propane)
• Noise: 59 dB
• Runtime: 7.5 hours at 25% load (gas)
• Weight: 95 lbs

Why we like it:

• Dual fuel flexibility (propane stores forever)
• Electric start
• More power than most 2000W units
• Great warranty support
• Excellent price-to-performance

Drawbacks:

• Heavier than smaller inverters
• Not as quiet as Honda

Best for: Budget-conscious buyers who want flexibility.

Westinghouse iGen4500 — Best Large Capacity

When you need to run more than the basics, the iGen4500 handles larger loads while staying relatively quiet.

Specs:

• Running watts: 3700W
• Starting watts: 4500W
• Noise: 52 dB at 25% load
• Runtime: 18 hours at 25% load
• Weight: 98 lbs

Why it stands out:

• Powers furnace + fridge + sump pump + more
• Very long runtime
• Remote start option
• LED data center display
• RV-ready (TT-30R outlet)

Drawbacks:

• Heavy
• Large fuel tank to fill

Best for: Larger homes or those who need to run multiple high-draw appliances.

Predator 3500 — Budget Pick

Harbor Freight’s Predator line offers solid performance at aggressive prices.

Specs:

• Running watts: 3000W
• Starting watts: 3500W
• Noise: 57 dB
• Runtime: 11 hours at 25% load
• Weight: 100 lbs

Why it works:

• Excellent price
• Good power output
• Readily available at Harbor Freight
• Electric start
• CO secure shutoff on newer models

Drawbacks:

• Mixed reliability reports
• Heavier than premium brands
• Shorter warranty

Best for: Budget-focused buyers willing to trade some reliability for savings.

Generator Safety

Location:

• Run ONLY outdoors
• At least 20 feet from any window, door, or vent
• Point exhaust away from house
• Never in garage, even with door open

Operation:

• Let cool before refueling
• Use fresh fuel (add stabilizer if stored)
• Don’t overload (causes damage and fire risk)
• Use heavy-duty outdoor-rated extension cords

Never do this:

• Run indoors or in enclosed space
• Backfeed into house wiring (hire electrician for transfer switch)
• Refuel while running
• Touch with wet hands

Fuel Storage Tips

• Store gasoline in approved containers
• Use fuel stabilizer (gas goes bad in 3-6 months)
• Store away from living areas and ignition sources
• 10-15 gallons is a reasonable emergency supply
• Rotate fuel every 6-12 months

Generator Maintenance

Before storm season:

• Run generator for 15-30 minutes monthly
• Check oil level before each use
• Change oil per manufacturer schedule
• Inspect air filter
• Test all outlets with a load

After each use:

• Run until fuel is used OR add stabilizer
• Turn off fuel valve if equipped
• Store in dry location

Related Guides:

• Generator vs Power Station: Which Is Right for You?
• Winter Storm Preparedness
• Power Outage Heating
• Best Portable Power Stations