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Wattsmith Electric

Standby generator installation San Antonio

Generac generator installation in San Antonio

Home standby generators sized to the loads you want to keep running, installed with a transfer switch, permitted and inspected, then kept ready with scheduled maintenance. Licensed by TDLR and insured.

We sell and install Generac home standby and commercial generators.

  • Licensed and Insured
  • BBB Accredited
  • Veteran Owned
  • TECL 41806

Tell us what is going on

Tap what you need, tell us when, and a real electrician calls you back.

Step 1 of 2

What do you need?
When works for you?

Sparks, burning smell, or a dead panel? Call (210) 446-5446 now instead of waiting on a callback.

We only use your number to call you back about this job.

By continuing, you agree that Wattsmith may call or text you back about your request.

You approve one flat price before any work starts. No hourly meter, no surprise invoice.

We hit your window. Miss it with no heads-up, and that is $149 off. The fine print

A Wattsmith electrician calls you back within 15 minutes during business hours.

What the install includes

What does a Generac generator installation include?

A Generac generator installation includes sizing the unit to your loads, setting it, wiring the automatic transfer switch, pulling the electrical permit and meeting the inspector, then testing the unit under load before we leave. The gas line is a licensed plumber's work, quoted separately and scheduled with the electrical work. We service and repair standby generators afterward.

Home standby sizing

Size comes from a list of what you want running in an outage: the air conditioning, the refrigerator, the well pump, medical equipment, the whole house or a set of essential circuits. We list the loads, check the panel and the service, and recommend the unit and the transfer switch to match.

  • A load list room by room
  • Air conditioning starting loads accounted for
  • Whole house or essential circuits, your choice

Installation

We set the unit, mount and wire the automatic transfer switch, run the wiring between the generator, the switch and your panel, and start the unit up and test it under load before we leave.

  • Automatic transfer switch at the service
  • Wiring between the generator, the switch and the panel
  • Start up and a transfer test under load

Permit and inspection

Inside San Antonio, the City's electrical permit application covers generators, and we pull the permit and meet the inspector through the Development Services Department. Texas changed how cities may regulate home backup systems in 2025, and the suburban cities run their own permit offices, so we confirm what your city requires before we write the price.

  • Electrical permit pulled by us
  • Inspection scheduled and met
  • Placement checked against the setbacks before the unit is set

Gas line coordination

A standby generator runs on natural gas or propane, and the gas line is a licensed plumber's work, not an electrician's. Gas line and gas connection are not included. That is a licensed plumber's work and we quote it separately. We coordinate the plumber with the electrical work so the unit is ready to run on the day it is finished.

  • The gas run quoted as its own line
  • Meter capacity checked with the plumber
  • Electrical and gas work scheduled together

Generac generator maintenance

A standby generator exercises itself on a schedule, but the oil, the filters, the plugs and the battery still need service at the intervals in the owner's manual for your model. We service and repair standby generators and test the transfer switch at each visit.

  • Oil, filters, plugs and battery
  • Transfer switch test
  • Repairs quoted at a written price before work

Generator transfer switch installation

The transfer switch is what makes a standby generator automatic: it senses the outage, starts the generator and moves your loads over, then moves them back when the utility returns. We install whole house and essential circuit switches, with load management for large air conditioning loads.

  • Whole house, service rated switches
  • Essential circuit switches
  • Load management for large loads

Commercial generators

For a business, a standby generator keeps the loads that cannot stop running through an outage. The same sizing, transfer switch and permit work applies, at commercial scale.

Questions about generac generator installation? Call or get a quote.

Generator quote

How do I book a Generac generator sizing visit?

Tell us what you want to keep running in an outage. We call back to set up the sizing visit.

Prefer to talk? Call (210) 446-5446.

Step 1 of 2

What do you need?
When works for you?

Sparks, burning smell, or a dead panel? Call (210) 446-5446 now instead of waiting on a callback.

We only use your number to call you back about this job.

By continuing, you agree that Wattsmith may call or text you back about your request.

You approve one flat price before any work starts. No hourly meter, no surprise invoice.

We hit your window. Miss it with no heads-up, and that is $149 off. The fine print

A Wattsmith electrician calls you back within 15 minutes during business hours.

FAQ

What do homeowners ask about Generac generators?

Straight answers. If you do not see yours, call us and ask.

Yes. We sell and install Generac home standby and commercial generators. The unit, the transfer switch and the electrical installation are on one written price, with the gas line quoted separately.

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