Automatic Transfer Switch Installation, Houston

An automatic transfer switch in Houston is what makes a standby generator safe. It senses the outage, starts the generator and moves your home to backup power. When the grid comes back, it switches back on its own.

Signs you need a transfer switch

  • You are adding a standby generator
  • You run a portable generator with cords through a window
  • Someone suggested a back-feed cord, which is unsafe and illegal
  • Your old switch is rusted or makes noise
  • Your generator does not switch over by itself
  • You upgraded your panel and the old switch no longer fits
  • You want load management for a second AC
  • The switch shows fault lights after a storm

How a transfer switch install works

  1. 1Panel checkWe look at your service size, meter and panel to pick a service-rated or load-side switch.
  2. 2Written priceYou see the switch, wiring and permit cost before work starts.
  3. 3PermitWe pull the City of Houston electrical permit.
  4. 4InstallPower is off for a few hours while we install the switch and wire it to the panel and generator.
  5. 5Test and inspectionWe pull the main to simulate an outage and confirm it switches both ways. Then the city inspects.

Transfer switch options and costs in Houston

Whole-home automatic switch$1,500–$2,500 installed (typical)

Service-rated switch, often part of a generator package.

Essentials automatic switch$1,000–$2,000 installed (typical)

Covers the chosen circuits only.

Manual inlet and interlock$800–$1,800 installed (typical)

For a portable generator. You switch it by hand at the panel.

Switch replacement$1,450 (our price)

Swap a failed or rusted switch on an existing generator.

Typical Houston ranges for planning. Your written price comes after we see the job.

What changes the price

  • Service size, 100, 150, 200 or 400 amps
  • Whole-home or essentials switch
  • Distance between the meter, panel and generator
  • Panel condition and space
  • Permit and inspection fees

See the full cost guide →

Good to know in Houston

Back-feeding a home through a dryer outlet is a real danger after Houston storms. It can shock line workers fixing the grid. A transfer switch or a listed interlock keeps your home separated from the street lines. Outdoor switches here also need to stand up to humidity and salt air.

A transfer switch must be installed by a TDLR-licensed electrician with a City of Houston electrical permit and inspection. The electrical inspector also checks the load analysis that sizes the switch and generator.

Questions about automatic transfer switches

What is back-feeding?

Plugging a generator into a wall outlet with a double-ended cord. It can start fires and shock utility workers. Don’t do it.

Can I use a transfer switch with a portable generator?

Yes, with a manual switch or an interlock and an outdoor inlet.

How long does switchover take?

Most automatic switches move to generator power within about 10 to 30 seconds.

Does the switch need maintenance?

Yes. We test it and check the connections at each yearly visit.

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