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*The Angi rating for Generator Install companies in Mayo, FL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Mayo, FL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on April 17, 2026

Find Generator install pros in Mayo

Avatar for Sunshine Services
Sunshine Services
4.8(
16
)

Serving Mayo, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"They installed a mini split AC in the addition to my house very efficient very nice crew install was done in a few hours"
New Water Heater
Over The Years
Gas Line Leak Repair
Gas Line Leak Repair
Leaking Pipes

+3

Response time2 days
43 neighbors recently requested a quote
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Avatar for Jennings Lightning Protection
Jennings Lightning Protection
5.0(
2
)

Serving Mayo, FL and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today!

Response time9 hrs
33 neighbors recently requested a quote
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Energy Electric, Inc.
4.6(
71
)

Serving Mayo, FL and surrounding areas

In business since 1973

Free estimates

Emergency services offered

"Shout out to Charles, Skip and CJ at Energy Electric, Inc! We had a perplexing electrical problem that they persevered on and ultimately solved for us. It took several visits but they answered every call I made and showed up on time for each appointment. I used a local Facebook site to try to locate an electrician immediately and Charles was the only one that answered the call and did not require me to leave a message. I give them â­ ï¸ â­ ï¸ â­ ï¸ â­ ï¸ â­ ï¸"
Response time11 hrs
Recommended by98%of homeowners
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Generator Install questions, answered by experts

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

The Mayo, FL homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

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