🧰 Buying guide · 2026

Best Accessories & Maintenance

A generator that won't start is worse than no generator — you planned around it. Fuel treatment, covers, maintenance kits, and a CO alarm are cheap insurance on a four-figure investment, and most of it ships Prime.

Editor's Choice

#1

First Alert CO710 Carbon Monoxide Alarm

A 10-year sealed-battery CO alarm — mandatory equipment for generator owners.

9.1
/ 10

Pros

  • +Sealed 10-year lithium battery — immune to the outage itself
  • +Digital display shows low-level CO before it's an emergency
  • +Electrochemical sensor, UL 2034 listed

Cons

  • Whole unit is replaced at end of 10-year life (by design)
  • One per sleeping area is the actual recommendation — buy multiples
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$44.69on Amazon

Price as of Aug 4, 12:19 AM ET — subject to change.

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Editor's Choice

#2

GenTent Universal Open-Frame Running Cover

Run your generator in rain, snow, and ice — the problem every outage actually has.

8.9
/ 10

Pros

  • +Rated for 70 mph winds, heavy rain, 18" snow loads
  • +Installs on the frame in minutes; stays on for storage
  • +Keeps outlets/electronics dry — the actual failure point in rain

Cons

  • $160 for what looks like a tiny tent causes sticker blink — until the first storm
  • Inverter/enclosed generators need their specific models
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$159.99on Amazon

Price as of Aug 4, 12:19 AM ET — subject to change.

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Best Value

#3

STA-BIL Storage Fuel Stabilizer (32 oz)

About thirteen dollars against the #1 cause of generators that won't start.

8.6
/ 10

Pros

  • +Keeps stored gas fresh up to 24 months
  • +Prevents gum and varnish from forming in the carburetor
  • +Counters ethanol water-absorption corrosion

Cons

  • Can't resurrect already-stale gas — start fresh
  • Running the carb dry for storage is still best practice alongside it
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$12.48on Amazon

Price as of Aug 4, 12:19 AM ET — subject to change.

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#4

Generac Scheduled Maintenance Kit (Guardian air-cooled)

Oil, filters, and plugs matched to your Guardian — annual service in one box.

8.3
/ 10

Pros

  • +Everything for one annual service, correct parts guaranteed
  • +Matched oil viscosity for the G-Force engines
  • +Keeps 5-year warranty maintenance requirements documented

Cons

  • Verify the kit matches your engine (8kW–24kW kits differ)
  • DIY service still requires following the maintenance schedule log
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$16.99on Amazon

Price as of Aug 4, 12:19 AM ET — subject to change.

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Budget Pick

#5

Westinghouse Universal Generator Storage Cover

A fitted storage cover that keeps dust, UV, and mouse nests out between outages.

8.0
/ 10

Pros

  • +Durable polyester with elastic hem actually stays on
  • +Blocks dust, UV, and drips in garage/shed storage
  • +Sized variants fit small inverters up to 12kW frames

Cons

  • Storage only — never run the generator covered
  • Won't stop a determined mouse; drop a rodent repeller nearby too
Read full review

$17.30on Amazon

Price as of Aug 4, 12:19 AM ET — subject to change.

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