The Generac 18kW is the most common whole-home standby generator installed in DFW — now with a transfer switch included as part of the system.
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the most common DFW HVAC size, covered without load shedding
bundled with built-in whole-home surge protection, a $300 value
remote monitoring stays active during outages even when home internet is down
| Standby Output | 18 kW (LP) / 17 kW (NG) |
| Fuel Type | Natural gas or liquid propane (LP) |
| Engine | Generac G-Force 800 |
| Transfer Switch | Included — bundled 200A automatic transfer switch with built-in whole-home surge protection |
| Dimensions | 46.4" x 26.3" x 30.7" |
| Weight | 426 lb (193 kg) |
| Warranty | 5-Year Limited |
| Fuel Consumption | NG — 164 ft³/hr | LP — 60 ft³/hr (~1.65 gal/hr) (at 50% load) |
If your home has multiple HVAC zones, high-draw appliances (EV charger, electric water heater, pool equipment), or is over 3,000 sq ft, a 22kW or larger unit may be the better fit. HomeSafe performs a load calculation on every site visit to confirm the right size before any equipment is ordered.
Not sure what size you need? See our installation guide →The Generac 18kW is the most common whole-home standby generator installed in DFW — and for good reason. Rated to run a 5-ton air conditioning system, it covers the full load of a mid-size North Texas home without undersizing the installation or forcing difficult trade-offs between circuits.
This is one of Generac's "Next Gen Series" units — the generator ships as a complete system with a 200-amp automatic transfer switch included, which comes with built-in whole-home surge protection (a $300 value on its own). Earlier Generac models sold the transfer switch separately; this model doesn't.
The 18kW starts automatically within seconds of a utility outage and runs on your existing natural gas line or a connected propane supply. The Power Zone 200 Controller connects via cellular Mobile Link — not WiFi — so remote status monitoring, maintenance alerts, and outage notifications keep working even if your home's internet service is down during the outage that triggered the generator in the first place. True Power™ technology keeps total harmonic distortion below 5 percent for modern inverter-driven HVAC systems and sensitive electronics.
HomeSafe installs and services the Generac 18kW across DFW — Fort Worth, Southlake, Colleyville, Keller, Flower Mound, Frisco, and surrounding communities. As a Generac PowerPro Elite+ dealer, we stock most parts locally and provide priority service support.
Note on fuel output: Generac rates this model at 18kW on liquid propane and 17kW on natural gas. For most residential applications the difference is negligible, but if you're running on propane and sizing carefully, LP gives you the full rated output.
We assess your electrical panel, confirm gas line access, and identify the best pad location. Takes 30–45 minutes. No charge, no obligation.
You receive a single all-in price — unit, transfer switch, concrete pad, gas line, electrical, and permits. No surprise add-ons after you sign.
Most installs complete in one day. We commission the unit, walk you through the controls, and your home is protected before we leave.
A whole-home generator is one of the most valuable upgrades you can make — and financing options may be available to help spread the cost. Get in touch and our team will walk you through what’s possible before you commit to anything.
Ask About Financing →“The electrician explained everything clearly and answered all my questions.”
“The plumber Zach did the final installation and assured me everything would be okay.”
“The delivery team explained everything and cleaned up after the job.”
HomeSafe handles everything — site assessment, load calculation, permitting, installation, and commissioning. Schedule a free site visit and we'll confirm whether the 18kW is the right fit, or recommend a better-matched model. Contact us to discuss pricing for your project.
