Home generator buying guide

{{whyLabel}}: Sizing a generator correctly prevents equipment damage and ensures life-saving devices (like CPAPs or oxygen concentrators) stay powered.

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• List 'Must-Haves': Refrigerator (approx. 700W), Sump Pump (800W), Heating System (600W), and LED Lights (10W each).
• List 'Comfort-Haves': Microwave (1200W), Wi-Fi Router (20W), and Phone Chargers (10W).
• Note the 'Starting Watts' for motorized items; they typically need 3x their running power to kick on.

{{doneWhenLabel}}: [A complete list of appliances with their corresponding running and starting wattages is documented.]

{{whyLabel}}: Buying a generator that is too small will cause it to trip under load, while one too large wastes fuel and money.

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• Use the formula: (Sum of all Running Watts) + (The single highest Starting Wattage value).
• Example: 2000W total running + 1800W starting for the fridge = 3800W total.
• Apply the '80% Rule': Choose a generator where your total load is only 80% of its rated continuous capacity to prevent engine strain.

{{doneWhenLabel}}: [A final 'Target Wattage' number is defined, including a 20% safety buffer.]

{{whyLabel}}: Each type serves a different frequency of use and budget level.

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• Portable (Open-Frame): Best for budget-conscious users; loud but powerful (5kW-10kW). Requires manual setup.
• Inverter: Best for sensitive electronics (laptops, TVs) and quiet neighborhoods; highly fuel-efficient but more expensive per watt.
• Standby (Permanent): Best for frequent/long outages; starts automatically and runs on natural gas/propane. Costs $5,000+.

{{doneWhenLabel}}: [The specific category of generator is selected based on your home's infrastructure.]

{{whyLabel}}: Gasoline degrades in 3-6 months, making it unreliable for rare emergencies unless treated.

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• Propane (LPG): Recommended for emergency use because it has an indefinite shelf life and won't gum up the carburetor.
• Gasoline: High energy density and easy to find, but requires 'Fuel Stabilizer' for storage.
• Dual-Fuel Units: The 2025 standard for flexibility; allows switching between gas and propane depending on availability.

{{doneWhenLabel}}: [A primary and secondary fuel source are decided upon.]

{{whyLabel}}: Carbon Monoxide (CO) is the leading cause of death during outages; modern units (2025/2026) feature sensors that kill the engine if CO levels rise.

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• Look for units labeled with 'CO Guard', 'CO Shield', or 'CO Sense'.
• Ensure the unit has at least two 120V GFCI outlets and one 30A/50A locking outlet if connecting to a house panel.

{{doneWhenLabel}}: [A generator meeting the wattage and safety requirements is purchased.]

{{whyLabel}}: Even with an outdoor generator, CO can seep into the home through vents or windows.

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• Install one detector on every level of the home.
• Place them specifically near sleeping areas.
• Use models with a 10-year sealed battery to ensure they work during a power loss.

{{doneWhenLabel}}: [Detectors are installed and tested in the home.]

{{whyLabel}}: 'Backfeeding' (plugging a generator into a wall outlet) is illegal and can kill utility workers. A proper switch isolates your home from the grid.

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• Interlock Kit: A sliding metal plate for your main panel; cheapest and most flexible (allows any circuit to be powered).
• Manual Transfer Switch: A dedicated sub-panel for 6-10 specific critical circuits; more 'foolproof' for beginners.
• Automatic Transfer Switch (ATS): Only for permanent standby units; handles everything without human intervention.

{{doneWhenLabel}}: [The connection method is chosen and hardware is acquired.]

{{whyLabel}}: Electrical codes (NEC) are strict regarding generator inlets to prevent fire and electrocution.

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• Have the electrician install a 'Power Inlet Box' on the exterior of the house.
• Ensure they use a 10-gauge or 8-gauge heavy-duty cord (depending on amperage) to connect the generator to the inlet.
• Verify the system is grounded according to the manufacturer's specifications.

{{doneWhenLabel}}: [The electrical connection is certified safe and code-compliant by a professional.]

{{whyLabel}}: You cannot rely on gas stations during a widespread outage (pumps need power too).

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• Store at least 15-20 gallons of gasoline in UL-listed containers (enough for ~2-3 days).
• Add a high-quality fuel stabilizer (e.g., generic 'Fuel Treatment') to every can immediately after filling.
• If using propane, keep at least two 20lb tanks full and stored in a shaded, outdoor area.

{{doneWhenLabel}}: [A 72-hour fuel reserve is safely stored and stabilized.]

{{whyLabel}}: Stress and darkness make the first real setup difficult; practice ensures you know the sequence.

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• Move the generator to its operating spot (at least 20 feet from the house).
• Connect the power cord and start the engine.
• Flip the transfer switch/interlock and verify that the refrigerator and lights receive power.
• Practice 'Load Management': Turn off the AC before starting the microwave to avoid overloads.

{{doneWhenLabel}}: [The system has been successfully tested under a simulated load.]

{{whyLabel}}: Generators fail most often due to old oil, dead batteries, or gummed-up carburetors.

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• Monthly: Run the generator for 20 minutes under load to circulate oil and dry out moisture.
• Bi-Annually: Check the spark plug and air filter.
• Every 100 Hours (or Annually): Change the engine oil (use 5W-30 or 10W-30 synthetic for better cold starts).
• Every 2-3 Years: Replace the starting battery if applicable.

{{doneWhenLabel}}: [Calendar reminders are set for monthly 'exercise' and annual servicing.]