What a Standby Generator Actually Does During Hurricane Season

Every Gulf coast hurricane season brings the same conversation: the power goes out, sometimes for a few hours, sometimes for days, and homeowners start pricing out a standby generator while the lights are still off. It's a reasonable time to ask the question, but it's worth understanding exactly what one of these systems does before you buy it.

What a whole-home generator actually does

A standby generator sits outside permanently, wired into an automatic transfer switch. When utility power drops, the transfer switch detects it and starts the generator automatically, usually restoring power to the house within seconds, with no one needing to be home to flip anything. Depending on how it's sized, it can run the whole house or a defined set of essential circuits, which typically include air conditioning, refrigeration, and lighting. That's a meaningful difference from a portable generator, which needs someone to physically wheel it out, fuel it, and run extension cords the moment the power actually goes out, usually in the middle of a storm.

Why this is a different problem on the Gulf coast

An outage in a mild climate is an inconvenience. An outage in Cypress in August, with attics climbing past 140 degrees and outdoor temperatures that don't cool down much overnight, turns into a real safety issue within a day, especially for anyone elderly, very young, or dealing with a medical condition. Storm-related outages here also tend to last longer than a typical grid failure, because downed lines across a wide area take real time to repair, and in some storms whole neighborhoods have gone a week or more before every line was back up.

Natural gas or propane

Most standby generators run on natural gas or liquid propane rather than the gasoline you'd put in a portable unit. A natural gas hookup draws off the same line as a stove or water heater, and fuel supply usually isn't a concern since the gas grid tends to stay up even when the power grid doesn't. A propane setup uses a dedicated tank, which has to be sized and monitored so it doesn't run dry partway through a multi-day outage. Either way, that's a conversation that happens before installation, not after the first storm.

The equipment behind it

Efficiency Experts installs Honeywell and Generac standby generators, which include a few features worth knowing about specifically.

• Precision Power Technology, which reduces total harmonic distortion to less than 5 percent, protecting sensitive electronics
• A G-Force Engine built for standby, rather than portable, duty cycles
• WhisperCheck Self-Test Mode, which runs a quiet weekly self-check automatically

What it doesn't cover

A generator only powers what it's sized to power. A unit sized for essential circuits won't run every outlet in the house the way normal utility power does, and that sizing decision has to happen before installation, not after the first storm. It also isn't a substitute for basic storm prep. It keeps the lights and the AC on during an outage. It doesn't reinforce a roof or move a car out of a flood zone.

The honest way to think about a standby generator is as insurance against the specific failure mode that actually hurts people here, a multi-day outage in the middle of a Texas summer. Efficiency Experts offers free estimates on generator installs, which is the right first step to figuring out what size actually fits your house.