Generators in St. Louis, MO
Standby generator sizing, installation and service so the lights stay on when the power does not.
- Power and Climate
- Homes and businesses
- One call, not five
One request. One expert. One call.
Prefer to type? Text your request to 314-270-2054.

Storms can knock out power for hours or days, and a standby generator starts on its own when the grid goes down. Send one request and a generator specialist will contact you to size a system for your home.
A proper installation involves a licensed electrician, a gas line, a transfer switch and the right placement. Ask your installer what loads the unit will carry and how it is maintained once it is in place.
Generators: what our partners handle
- Whole-home standby generator installation
- Sizing based on your loads
- Transfer switch installation
- Natural gas or propane connections
- Annual maintenance and service
- Repair of existing generators
Signs it is time to call
- You rely on medical equipment, a sump pump or a well
- Outages that last longer than a few hours in your area
- A portable generator that is not enough
- An older generator that fails to start
What happens after you ask
- 1
You submit once
Tell us what you need and where. It takes about a minute.
- 2
One expert contacts you
A member of our team reviews it and calls. Only one contractor will ever call.
- 3
Assess, estimate, work
Royal Generators sends a licensed, independent, insured, vetted pro to assess, estimate and do the work.
About generators
How big a generator do I need?
It depends on what you want to run. A pro adds up your loads, such as air conditioning, a well pump and a range, and recommends a size.
Does a generator need maintenance?
Yes. Like any engine it needs regular service, and a standby unit usually exercises itself on a schedule.
Will several contractors call me?
No. Only one contractor will ever call about your request. You will not get a pile of calls and constant emails, and we never sell your information.
Who does the work?
A licensed, independent, insured and vetted partner contractor visits to assess the work, gives you an estimate and does the work if you decide to go ahead. See our Terms of Use for details.
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