Portable or standby - which makes sense for me?
Portable costs about half of a small standby up front. The catch is portable requires you to be home, awake, and willing to wheel a 200-pound machine into the yard in the snow, fuel it, start it, and plug it in - then refuel every 8 to 12 hours. Standby starts itself in 10 to 30 seconds, runs unattended, and refuels itself off your gas line. If you travel, work nights, have mobility limits, or hate the idea of getting out of bed at 3 AM during an ice storm, standby is the answer. If you're handy, home most of the time, and treat outages as a once-a-year inconvenience, portable works.
What size portable do I need?
For a few critical circuits (refrigerator, sump pump, furnace blower, some lights, internet): 5,500 to 7,500 starting watts is usually enough. To run a window AC or window heat pump too, 8,000 to 10,000W. Portables don't do central AC well - the starting wattage on a 3-ton condenser is brutal. Generac GP series spans 6,500W to 8,000W and covers most essentials-only use cases.
Gasoline or dual-fuel?
Dual-fuel (gasoline or propane) is worth the small upgrade. Propane stores indefinitely - a 20-pound grill tank sits in your garage for years without fuel degrading, while gasoline turns to varnish in 6 to 12 months without stabilizer. Propane also burns cleaner. The downside is propane delivers slightly less power per hour. Most homeowners run dual-fuel on propane and keep a few gallons of stabilized gas as backup.
Where do I put the portable while it runs?
Outside, at least 20 feet from the house, far from any window or door, with the exhaust pointing away from openings. Never in a garage - even with the door open. Carbon monoxide from a portable generator kills people every year in this region during ice storm outages. Generac portables have CO-Sense shutoff on newer models, but the only way to be safe is distance and open air. A small canopy or commercial generator tent keeps rain off without trapping exhaust.
What's a manual transfer switch and do I need one?
A manual transfer switch is a small subpanel installed next to your main panel that lets you flip selected circuits from utility power to generator power - cleanly, without running extension cords through windows. We install 10-circuit or 16-circuit models from Reliance, Generac, or Square D. The alternative is extension cords running into your house, which is dangerous (window seal lost, CO risk, cords overloaded) and code-violating in most jurisdictions. Manual transfer switch install runs a couple thousand dollars and makes a portable actually usable.
How often do I need to maintain a portable?
Three things. First, run it monthly for 10 to 15 minutes under light load to keep the carb wet and the oil moving - portables sitting dry for a year are why so many won't start during the next outage. Second, change oil after the first 20 to 25 hours of break-in and every 100 hours after. Third, add fuel stabilizer to any gasoline you store. AKHC can put a portable on a service-by-service maintenance schedule, but most owners handle this themselves.
How long does a portable last?
A well-maintained Generac portable typically lasts 1,000 to 2,000 hours of runtime. That's 10 to 20 years for typical outage-only use (maybe 50 to 100 hours per year). Neglected portables die in 3 to 5 years from old fuel gumming the carburetor, dead battery, or seized rings from running with low oil. The maintenance matters more than the running time.