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Three kinds of generators
| Type | Pros | Cons |
|---|---|---|
| Conventional portable | Most watts per dollar; runs a well pump or window AC | Loud; not ideal for sensitive electronics; manual refueling |
| Inverter generator | Quieter, fuel-efficient, clean power for electronics; some dual-fuel | Costs more per watt |
| Home standby | Starts automatically; whole home including central AC; natural gas or propane | Highest cost; needs installer, permit and routine maintenance |
Sizing
Add the running watts of everything you'll run at once, then make sure the generator's surge rating covers the biggest motor starting (fridge, well pump, AC). A 3,500–5,000 W portable typically runs a fridge, lights, fans and internet. A 7,500–10,000 W unit can add a well pump or a small central AC through a transfer switch. Whole-home standby units for typical Texas houses are often 14–26 kW.
Connecting safely
For anything beyond extension cords, have a licensed electrician install a manual transfer switch or a panel interlock with an outdoor generator inlet. It's the only safe way to power hardwired items like a well pump or furnace blower.
Fuel tips for Texas
- Store gasoline in approved containers with fuel stabilizer, and rotate it every few months
- Dual-fuel models let you use propane tanks, which store for years
- Run the generator monthly under some load
- Before hurricane season (June) and winter, change oil and test start
Compare portable and inverter generators on Amazon (partner link coming soon)
Frequently asked questions
How far from the house should a portable generator be?
The U.S. Consumer Product Safety Commission advises running portable generators outside only, at least 20 feet from the home, with the exhaust pointed away from windows, doors and vents. Never in a garage, even with the door open.
Can I plug a generator into a wall outlet?
No. 'Backfeeding' through an outlet is illegal and dangerous; it can electrocute utility workers and family members. Use extension cords or have an electrician install a transfer switch or interlock with a generator inlet.
Natural gas or propane for a standby generator?
Natural gas means no refueling if your home has gas service. Propane needs an on-site tank, common in Hill Country homes without gas lines.