Be prepared for Missouri storms with a whole-house standby generator. Generac, Kohler, and other leading brands — installed, permitted, and inspected by licensed electricians.
Missouri weather doesn't mess around. Summer thunderstorms, straight-line winds, ice storms, and tornadoes can knock out power for hours or even days. A whole-house standby generator keeps your home running through it all — lights, HVAC, refrigerator, sump pump, home office — all automatically, without you lifting a finger.
A standby generator sits outside your home (similar in size to a central AC unit) and connects to your natural gas or propane line. When it detects a power outage, the automatic transfer switch activates the generator within seconds. When utility power returns, it switches back and shuts down — all automatically. You don't need to be home, you don't need to start anything manually, and you don't need to run extension cords.
Generator sizing depends on what you want to power during an outage. A smaller unit (10-14kW) handles essentials — lights, fridge, sump pump, some outlets. A larger unit (20-26kW) powers your whole house including AC, electric range, and dryer. We calculate your home's electrical load during the estimate and recommend the right size for your needs and budget.
Installation typically takes 1-2 days and includes: pouring a concrete pad, setting the generator, connecting to your gas line (we coordinate with your gas utility), installing the automatic transfer switch at your main panel, running all electrical connections, pulling permits, and scheduling the final inspection. We handle every step.
St. Louis sits in the heart of severe weather territory. Summer storms can produce straight-line winds over 70mph. Winter ice storms coat power lines and tree limbs. The Ameren Missouri grid serves a sprawling metro area with aging infrastructure in some corridors. If you have a finished basement with a sump pump, a home office that can't afford downtime, or family members with medical equipment, a standby generator isn't a luxury — it's a necessity.
Call now for a free, no-obligation estimate. We respond fast.
📞 (314) 408-5647 — Call NowA Generac or Kohler standby generator installed in St. Louis typically costs $4,500–$12,000+ depending on generator size (11kW–26kW), transfer switch type, and gas line work. We provide detailed, itemized estimates at no charge.
A 14kW–20kW generator covers most St. Louis homes (2,000–3,500 sq ft) including essentials plus central HVAC. A 22kW–26kW unit is recommended for larger homes or those with electric vehicle chargers and high-draw appliances. We size your generator based on a load calculation during the estimate.
Most installations take 1 to 2 days. This includes placing the generator, installing the automatic transfer switch, connecting to your gas line, and coordinating with Laclede Gas for gas service. Permit and inspection scheduling may add a few days to the overall timeline.
Yes. A standby generator monitors your utility power and starts automatically — typically within 10–20 seconds of an outage — without any action from you. When Ameren restores power, it shuts off automatically and transfers back to utility power.
The standby generators we install run on natural gas or propane. Most St. Louis homes are connected to Laclede Gas natural gas service, which provides an effectively unlimited fuel supply — no refueling required, unlike portable generators.
Yes. Generator installation requires both an electrical permit (for the transfer switch and wiring) and sometimes a gas permit (for new gas line work). We pull all required permits and schedule inspections as part of every installation.