A whole-home standby generator is a permanent Generac unit, fed by natural gas or propane, that starts on its own within 10-30 seconds of an outage through an automatic transfer switch. It suits homes that cannot go without a sump pump, medical equipment or heating and cooling through long outages. We size it with a load analysis, then handle the pad, gas line, permits and inspection. We install generators but do not service them, and for many homes whole-home battery backup is the quieter, fuel-free option.
MO License #20250016884.9 Star Average. 410+ Reviews.In Business Since 2010Cottleville, MO
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If storms or grid outages keep taking out heat, sump pumps or medical equipment, backup power can keep the essentials running.
Common causes
An estimate, not a quote. Estimates for installs and upgrades are free; your exact flat price comes after we see the job, and it's the price you pay.
$5,000–$8,000
Powers essential circuits: fridge, lights, sump pump, furnace, select outlets
$10,000–$16,000
Powers entire home including A/C, electric appliances
$18,000–$30,000
All-electric homes, large properties, pools, workshops
Equipment we install: Generac Guardian 22kW, Generac PWRcell.
Typical job: 1-2 days.
We calculate your power needs by listing everything you want to keep running during an outage: HVAC, refrigerators, sump pump, lights, medical equipment, garage doors, etc. This determines the generator size you need.
A technician visits your home to determine optimal generator placement (meeting code setback requirements from windows and property lines), plan gas line routing from your meter, and assess electrical connection to your panel.
You receive a comprehensive quote covering the generator, transfer switch, concrete pad, gas line installation, electrical connection, and all permits. We explain options for whole-home vs. essential coverage.
We pull electrical and gas permits from your municipality. Generator installations require permits and inspection. We coordinate with your gas utility for the new gas line connection.
We pour a concrete pad (or install a composite pad) sized for your generator, ensuring proper drainage and level installation. The pad must cure before generator placement.
A licensed gas technician runs the gas line from your meter to the generator location, installs the shut-off valve, and makes the connection. The gas line is pressure-tested for leaks.
We install the automatic transfer switch at your panel, run the power connection to the generator, and wire the monitoring/control systems. For whole-home coverage, we install a service-rated transfer switch.
Electrical and gas inspections are scheduled. After passing, we start the generator, verify automatic transfer operation by simulating an outage, test all protected circuits, and configure the WiFi monitoring system.
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Fully licensed and insured in Missouri:MO State License #2025001688,St. Charles County #E25-000008,St. Louis County #ES4501.Lifetime workmanship warranty on installed work.
After: transfer switch installed beside the panel for a backup generator in St. Charles, MO.
St. CharlesFlat-rate pricing before work begins, from an office in Cottleville.
5377 State Route N. Suite 437, Cottleville, MO 63304
Mon-Fri 8:00 AM - 4:00 PM
By county
It depends on what you want to power. A 22kW generator typically covers most homes. We'll perform a load analysis to recommend the right size.
Automatic standby generators start within 10-30 seconds of detecting a power outage, before your refrigerator even knows the power went out.
Natural gas is most convenient if available: unlimited fuel during extended outages. Propane is excellent if you don't have natural gas service.
Yes. Generators need annual maintenance: oil changes, filter replacement and testing. We install generators but don't service them, so we'll point you to the manufacturer's authorized service dealer for maintenance.
Modern Generac generators operate at about 66 decibels, similar to a normal conversation. Much quieter than portable generators.
Yes, with proper sizing. A 22kW generator handles most homes. Larger homes or all-electric homes may need 24-48kW units.
No. The generator monitors utility power 24/7 and starts automatically whether you're home, at work, or on vacation.
Generators work alongside solar systems. During outages, the generator powers your home while solar may be grid-tied and offline. We can integrate both systems.
Not sure a generator is the right fit?
No fuel, no noise, no yearly service. Paired with solar, the battery recharges during an outage instead of running down. And if you want fuel-powered backup as well, Anker makes a standby generator that runs on three fuel types and works alongside the battery. We install all of it and will tell you straight which setup fits your home.
Most estimates booked within 1-3 business days.