The Best Portable Generators on Amazon, According to Hyperenthusiastic Reviewers
You can run the most critical household equipment with a generator rated at 5,000 to 7,500 watts. These include things like a well pump, refrigerator and freezer, and lighting circuits. A generator with around 7500 running watts can run all these appliances at once. For RV, a 3000 – 4000-watt generator would be ideal.
Portable Generators: Backup Power at a Lower Cost. A lower-priced alternative to standby generators, portable generators can keep power running in an emergency, as long as you don't mind a few inconveniences. A storm has knocked out power to your neighborhood, but you need to use your computer for work today.
Portable generators can (and should) be connected to your home's circuit breaker panel with a transfer switch or interlock device, which allows the generator to power an entire circuit rather than plugging in devices à la carte.
On average, depending on their size, home refrigerators need around 1000-2000 starting watts. The generator that can deliver at least 2000 starting watts will be sufficient to run both the refrigerator and the freezer without problems.
Whole House: Starting at about 12,000 watts, these generators can generally keep a home running without missing a beat. You'll be able to run lights, fans, TVs, refrigerators, computers, space heaters and pretty much anything else you plug into an outlet.
7000 to 9,000 Watts
Air-cooled standby generators in this range provide enough power to keep essential home systems operating. Operating a sump pump, freezer, refrigerator, and furnace will use up to 4000 watts. ... A larger 9,000-watt standby unit could probably handle the additional load of a 1-ton air conditioner.
Transfer Switches
Can a portable generator power your Central AC unit? YES. But you will likely need a larger watt portable generator (10,000 watts or higher).
Pros: Portable generators are cheaper to buy and install than home standby models. When connected to your home's circuit-breaker panel with a transfer switch, they can power almost as much as a home standby generator.
The generator is so quied because the muffler and the engine is designed to be quiet and the engine speed is no longer tied to the output frequency of the generator.
The national average cost is between $10,000 and $20,000 for a whole house generator. Most people spend around $15,000 on an 18kW generator capable of powering a 2,000 sq. ft. home with heating, cooling, hot water, lighting, and appliances.
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