Generac 20kW Guardian Standby Generator
Twenty kilowatts, three-phase.
The air-cooled Guardian, built for buildings on three-phase service. Small shops, offices, and strip-center suites that want the lights, the register, and the AC on when the block goes dark.
Financing through Synchrony and others. How that works →
Generac Prestige DealerGenerac's highest dealer designation. We sell, install and service Generac home standby generators.
Generac generatorsWhat a 20kW runs. A small suite on three-phase.
For the small shop, office or strip-center suite on three-phase service. Sized to what has to stay on, not the whole building.
- Lights and registers
- A rooftop unit or split AC, sized to the load
- Coolers and display cases
- Network, phones and the server closet
- Security system and cameras
Typical commercial loads. A load study on site decides the size. Request a free site visit and we measure what has to stay on.
For the small business on three-phase.
Most small commercial suites run on 120/208 three-phase. This is the compact unit that matches it without going to a liquid-cooled Protector.
Offices, salons, small retail, a restaurant's essentials.
Enough to stay open. We size it to what you actually need on.
Senses the outage, starts itself, switches the building over. Hands it back when CenterPoint returns.
- Pick it if: a small building or suite on three-phase and a modest load.
- Step up if: the load is bigger or the outage might be long. The Protector line starts at 25.
Not sure? Five taps on the calculator gets you a size, or call and we'll size it on the phone.
In plain English.
Generac's spec sheet has a lot of words on it. This is what they mean for you.
It turns itself on.
Power goes out, it senses it, starts, and switches the house over in about ten seconds. Power comes back, it hands the house back and shuts down. You don't touch anything.
It runs on the gas line you already have.
No refueling, no gas cans in the garage, no cords through a window. On propane, your supplier runs the tank to the generator and we do the rest.
It checks itself every week.
A few quiet minutes, once a week, so it's ready when it counts. Generac calls it Quiet-Test. You'll barely notice.
It texts your phone.
A cellular connection is built in, so it doesn't even need your home Wi-Fi to reach you. The Mobile Link app tells you when it ran, when it started during an outage, and when it needs service. We set it up at the walkthrough.
The case doesn't rust.
Aluminum, with a baked-on textured finish, rated for winds up to 150 mph. That matters more in Houston humidity and hurricane season than anywhere.
We match the switch to your panel.
The automatic transfer switch is the box that moves the house from CenterPoint to the generator and back. It's not in the generator box; we pick the right one for your panel at the free visit, and it's part of the install, not an extra.
Wired installs, around Houston.
Real photos of our installs around Houston and Tomball: the unit set on its pad, the transfer switch and gas line run, and the startup test before we leave. The unit in a photo may be a different size than this one.
For the people who want them.
Everything below is from Generac. Ask us if any of it needs explaining. That's what we're for.
| Power | 20kW on natural gas · 20kW on propane |
|---|---|
| Electrical | 120/208 volts, three-phaseThree-phase, for buildings on three-phase service. |
| Fuel | Natural gas or propaneRuns on the gas line already at the house. No gas cans. |
| Model numbers we stock | G0072710 · 120/208 V three-phase |
| Transfer switch | Not in the box. We pick a three-phase automatic transfer switch for your service as part of the install. |
| Engine | Generac G-Force 1000, two cylinders, 997 cc, air-cooled. Built for the job: pressure-lubricated, with oil changes up to two years apart. |
| Case | Aluminum, Metro Gray, sound-attenuated, rated for winds up to 150 mph. Can sit as close as 18 inches to the house.Aluminum doesn't rust. That matters in Houston humidity. |
| Sound | 67 dB running · 55 dB during the weekly self-testMeasured 23 feet away. For reference, a central AC unit is in the same range. |
| Fuel use | Natural gas: 189 ft³/hr at half load, 290 ft³/hr at full. Propane: 1.99 gal/hr at half load, 3.40 gal/hr at full.How much gas it burns at half load and full load. Your gas bill goes up only while it's running. |
| Size | 46.4" long × 26.3" wide × 30.7" tall |
| Weight | 472 lb |
| Warranty | Generac 5-year limited warranty |
| Phone app | Mobile Link app. Cellular built in, plus Wi-Fi and Bluetooth. Remote diagnostics, so Generac and we can see a fault before you do. |
No price tag on the website. Here's why, and how to get your number.
The unit is only part of it. The gas run, the pad, the transfer switch, and your panel change the number from one house to the next, so a price on a web page would be wrong for most people. Getting the real one is quick.
Two minutes on the phone
Tell us the size of the house and what you want to keep running. We'll tell you if the 20 is the one and what an install like yours usually involves.
Call (713) 467-1125We come look, then quote it
We count your circuits, check the gas meter, and pick the spot. You get a written, itemized number. No allowances that turn into surprises.
Book the free visitMonthly, if you'd rather
Synchrony plans on generators and electrical work, and other lenders if Synchrony isn't the fit. We show you the options at the visit.
See the plansFree visit, permit, one day, lights back in ten seconds.
- Site walk. We look at your service, your load, and where the unit and switch would go. Free.
- A real quote. Written, itemized, in the phase and voltage your building already has.
- Permit and install. Our own crews, scheduled around your hours. Nights and weekends if that keeps your doors open.
- Load test. We throw the main with you watching and hand you the report.
Compare it with the others.
Single-phase or three-phase, in the voltage your building already has. Grocery, cold storage, churches, warehouses, multi-building sites.
Small shops, offices, and strip-center suites on three-phase service.
You're looking at this oneRetail, small clinics, churches. Big houses, too.
See this one →Larger clinics, small multi-tenant buildings.
See this one →Warehouses, manufacturing, car washes, mid-size retail.
See this one →Bigger facilities, multi-tenant buildings, larger clinics.
See this one →Grocery, larger clinics, churches with a campus, multi-building.
See this one →Cold storage, light industrial, restaurants with a big walk-in.
See this one →Industrial, data and telecom, multi-building sites.
See this one →Ask about the 20kW.
Tell us about the house and we'll tell you if the 20 is the right one, what the install involves, and what the payment options look like. No pressure, and the visit is free.
(713) 467-1125 13910 Alice Road, Tomball, Texas 77377wired@wiredes.com · Open 24/7 · Showroom on Alice Road, come see the units
Rather see it first?
Some of these are on the showroom floor at 13910 Alice Road in Tomball. Come by, or call and we'll tell you what's out there right now.
Call (713) 467-1125