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Avatar for Mr. Electric of Huntsville
Mr. Electric of Huntsville
4.5(
95
)
Fixed Generator - InstallFixed Generator - Repair

Serving Trinity, AL and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"This was the first time I used Home Advisor to find a contractor. Home Advisor linked me with Mr. Electric who did an outstanding job. They were on time, on budget, courteous, professional, and totally a pleasure to work with. Thomas installed a 50 and 30 amp service for us at our property servicing two RV lots as well as installed a power pole with a meter box for the power company to tie into. Jan was a pleasure to work with as she was the voice for the company dealing from everything from scheduling to invoice as well as general questions. Jan was very pleaseant and professional. We will use Mr. Electric in the future and highly recommend their service..."
EV Charger Install
EV Charger Install
Electrical Upgrade in Home Shop
panel upgrade
panel upgrade

+15

68 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for M&S Electric
M&S Electric
5.0(
7
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Trinity, AL and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We specialize in interior remodeling, back-up generator power, lighting upgrades, new electrical builds, and troubleshooting any electrical problem that may arise. We provide unmatched customer service! You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!\n

Chicken House
Chicken House
Chicken House
Chicken House
Chicken House

+8

5 neighbors recently requested a quote
Avatar for APS Lighting and Electrical LLC
APS Lighting and Electrical LLC
5.0(
5
)
Fixed Generator - Install

Serving Trinity, AL and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"This is our go to electrical contractor for all of our commerical projects. They communicate clearly, arrive on time, and complete everything efficiently and professionally with quality always in mind. Their attention to detail and reliability always help the projects to run smoothly. Can’t recommend them enough for whatever you need done!"
21 neighbors recently requested a quote
Avatar for Southern Gentlemen Lawn Care
Southern Gentlemen Lawn Care
New to Angi
Portable Generator - Repair

Serving Trinity, AL and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

Southern Gentlemen Lawn Care & Home Services provides reliable, professional lawn care, property maintenance, and small home improvement services for homeowners. Our services include routine mowing, edging, weed-eating, blowing, seasonal yard cleanup, and general property upkeep. We also take care of those smaller handyman projects and home maintenance tasks that homeowners may not have the time, tools, or expertise to handle themselves.\n\nFrom keeping your yard looking its best to taking care of the little things around your home, Southern Gentlemen is here to help keep your property looking great and working the way it should.

Work in Progress!
Work in Progress!
Work in Progress!
Work in Progress!
Work in Progress!

+12

1 neighbors recently requested a quote
Avatar for Titan Electrical Contractors, LLC
Titan Electrical Contractors, LLC
5.0(
10
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Trinity, AL and surrounding areas

In business since 1980

Free estimates

Credit card accepted

"installed upgraded fuse box from 100 to 200 amp also installed 30 amp box for motor home connection. on time and great customer service to include inspection of completed work. estimate and costs were better than expected. so glad to have TEC do the work will use again for electric work. Thank you TEC!!!"
Greenway Chevy
Grace Life Church
Grace Life Church
Greenway CDJR
SKF Bearings

+5

Response time4 hrs
Recommended by100%of homeowners
Avatar for All Seasons Electrical
All Seasons Electrical
5.0(
7
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Trinity, AL and surrounding areas

In business since 2025

Free estimates

Credit card accepted

"Grant and Blake care about the service they provide to their customers. They take pride in every part of their work and are more than qualified to take care of your electrical needs. Remember safety in any electrical installation/upgrading is important in your home or business, some people cut corners… these men do not. Highly recommend."
Response time1 day
Avatar for Tommy Vaughn
Tommy Vaughn
4.3(
25
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Trinity, AL and surrounding areas

In business since 2020

Emergency services offered

Credit card accepted

"Overall it went well. He had to reschedule twice, and both times I was not notified he was not going to make it. I had to call multiple times to find out. Once he did show up, he installed the box in the ceiling which turned out to be a harder job than was anticipated. The box works and my ceiling fan is working great."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+14

Recommended by94%of homeowners
Avatar for Blake Brothers
Blake Brothers
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Trinity, AL and surrounding areas

In business since 1884

Free estimates

Emergency services offered

We've had the privilege of servicing North Alabama's plumbing, heating, cooling & electrical needs since 1884. Over 138 years of serving residential and commercial customers in Huntsville, AL, you can always be confident turning to Blake Brothers for your plumbing, electrical, heating and air conditioning services.

Issues with your drains or pipes? Blake Brothers has you covered.
From switches, to breakers and lighting fixtures, our electricians do it all!
Our team of comfort advisors are best in class and prepared to help you find the right solution for your home, family and budget!
Need electrical service? Look no further!
Protect your home's systems year-round with a Priority Advantage Membership!

+17

Recommended by100%of homeowners
Showing 1-10 of 37
Generator Install questions, answered by experts

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

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.

The Trinity, AL homeowners’ guide to generator installs

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