Generac 22kW Generator Review: Is It Worth It?

What exactly are you buying here?

This is Generac's 22kW air-cooled home standby generator, model 7325, bundled with a 200-amp automatic transfer switch. It sits outside like a central air condenser, wires into your electrical panel through the transfer switch, and connects to your home's existing natural gas or liquid propane supply. When the power drops, it senses the outage, starts within seconds, and carries your house until utility power returns. When the grid comes back, it shuts off on its own. You do not flip anything or drag anything out of the garage.

The box includes the generator, the 200-amp transfer switch, and an owner's manual. The enclosure is aluminum and steel in Metro Gray, measures about 46 by 26 by 31 inches, and weighs 451 pounds. That weight matters: this is a fixed installation on a pad, not something one person moves around.

Who is it for, and who should skip it?

This is for homeowners who want the whole house backed up automatically and who already have, or can add, a natural gas or propane line. The 22kW rating paired with a 200-amp transfer switch is sized for whole-house coverage on a typical 200-amp service, so you are not choosing which circuits survive. Air conditioning, electric range, well pump, heat, and the fridge can run together instead of being rationed down to a few outlets.

Skip it if you rent, if you only need to keep a couple of essentials alive during short outages, or if you have no practical path to a gas supply. A portable inverter generator or a battery backup will cost far less and cause far fewer headaches for light duty. This machine only makes sense when you want the house to behave as if the grid never went down, and when you plan to stay in the home long enough to justify a permanent install.

What do the specs mean in practice?

The headline number is 22,000 watts (22kW) of running power on natural gas or LP, at 240 volts. On a standby unit that runs off a utility gas line, runtime is effectively unlimited: it keeps going as long as the gas keeps flowing, which is the big advantage over a portable you have to refuel with gasoline every several hours. On propane, your runtime is whatever your tank holds.

The listing shows both starting and running wattage at 22,000 watts. Gas-fueled standby generators do not have the big surge-versus-running gap that gasoline portables do, but 22kW is the continuous figure that matters for sizing. If you run heavy motor loads like a well pump and central AC compressor that both kick on at once, confirm your total surge demand fits under that number before you count on whole-house coverage.

The 200-amp automatic transfer switch is the part that makes this hands-off. It is rated to match a standard 200-amp main panel, so a typical home can be backed up as a whole rather than through a sub-panel of selected circuits. If your service is larger than 200 amps, this switch is not a match, so check your panel rating.

How good is the remote monitoring?

Cellular connectivity is built in, so the Mobile Link app can show performance, send maintenance alerts, and let you check status from your phone whether you are home or away. The useful detail buried in the fine print: the real-time monitoring and control rely on a Mobile Link premium subscription. The hardware is included; the full remote experience is an ongoing cost. Before you lean on this feature, look at the current subscription tiers on the listing or Generac's site so there are no surprises after install.

Cellular is genuinely handy here because it does not depend on your home Wi-Fi, which is often the first thing to die in an outage. You get a text or alert if the unit runs a self-test, throws a fault, or kicks on while you are away.

What about reliability and cold weather?

Generac leans on a few reliability touches worth calling out. Oil level sensors monitor oil to help keep the unit ready between runs, and low-oil shutdown protects the engine if levels drop. There is improved cold-start performance for northern climates, and the enclosure uses a sloped roof and rear air intake to cut the risk of ice or snow getting pulled inside. Electronic fuel and ignition control manages fuel use, which Generac positions as more efficient than its own older Guardian Series units.

Every unit carries a 5-year limited warranty with 24/7/365 support and a large dealer network. For a machine that mostly sits idle and has to work the one week a year you actually need it, that warranty length and support reach are reassuring. The 5-star rating comes from only 3 reviews, though, so treat the star count as early signal, not a track record.

What are the trade-offs and hidden costs?

The generator itself is only part of the spend. A standby install typically needs a licensed electrician, a plumber or gas fitter to run the fuel line, a concrete or composite pad, permits, and often a load calculation. None of that is in the box, and the listing does not include installation. Budget for it, and get quotes before you commit, because install can rival the cost of the unit.

Other things to verify on the listing: whether the gas line sizing in your home can actually feed 22kW (undersized lines starve the engine), local noise ordinances and required setback distances from windows and property lines, and whether your 200-amp service matches the included switch. This is also an air-cooled unit, which is the right call for most homes but works harder than a liquid-cooled commercial unit under sustained heavy load.

How does it compare with the alternatives?

Against a portable gasoline generator, this wins on convenience and runtime and loses on upfront cost and the need for permanent install. A portable is cheaper and movable, but you are out in the storm refueling it and running cords. Against a whole-home battery system like a Tesla Powerwall or Enphase setup, the Generac gives you unlimited runtime on gas and lower upfront cost, while batteries run silently, need no fuel, and pair with solar but tap out after a day or two without sun. Within Generac's own range, this 22kW model with the 200-amp switch is near the top of the air-cooled lineup, a step up from the smaller Guardian units that back up only selected circuits.

Verdict

If you want true set-and-forget whole-house backup, have access to natural gas or propane, and plan to stay put, the Generac 7325 is a strong, well-supported choice from the category's leading brand. Just go in clear-eyed about the installation costs and the subscription behind the remote features, and size your gas line and panel before buying. For the right homeowner it earns an 8.2.