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TRUSTED BY ALVIN, TX HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon44
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Alvin, TX

*The Angi rating for Generator Install companies in Alvin, TX 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 Alvin, TX 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 July 10, 2025

Find Generator install pros in Alvin

Avatar for A & A GenPro Electrical
A & A GenPro Electrical
4.3(
67
)
Fixed Generator - InstallPortable Generator - Install

Serving Alvin, TX and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"GenPro installed a Home Generator for us. Andrew Spitzmueller and his team were dependable and reliable. Did what they said they would do. When they encountered roadblocks with sub-contractors and permit inspectors, they worked diligently to resolve the situation. They are honest and trustworthy people. Highly recommend them."
Demar Install
McDermott
Demar Install
Cornell
30 kW

+18

Response time10 hrs
27 neighbors recently requested a quote
Recommended by92%of homeowners
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Avatar for 3 Guys Electric & Insulation
3 Guys Electric & Insulation
4.6(
159
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Alvin, TX and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"Installers were very professional on time as planned, did an excellent job and clean up. Could have done a better job keeping me informed of the schedule. Would highly recommend them."
Water Heater Wrap
Radiant barrier
Attic stair cover
Radiant Barrier/ blown in insulation
Reseal A/C duct

+44

Response time2 days
13 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Storm Guardian Generators
Storm Guardian Generators
4.0(
12
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Alvin, TX and surrounding areas

Approved (Corporate)

In business since 2006

Free estimates

Emergency services offered

"Ronnie, Pam, Cindy and crew were wonderful to work with.  There are several steps to the process, given potential permits needed and coordination of service dates with Center Point Energy.  They kept me informed and walked me through the process at each step. 
I got bids from three companies.  Storm Guardian's bid was the lowest and included the most features.  It included Mobile Link, which the other two did not even mention.  Being able to remotely monitor the generator and receive alerts on my IPhone and on-line when the generator turns on/off is great.  Almost as important to me, they came through on their promise of near turn key.  The other bids had me doing a lot of the leg work with Center Point.  With Storm Guardian, I only had to make two phone calls and be home half a day to authorize Center Point's replacement of the gas meter. 
I am very pleased with Storm Guardian and can recommend them without reservation.  Great work, great people.
"
Additional Photos
Response time1 day
Response rate100%
41 neighbors recently requested a quote
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Avatar for Strategic Electrical Solutions, LLC
Strategic Electrical Solutions, LLC
5.0(
25
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Alvin, TX and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Fantastic experience. I called at 11:00a for a generator start up and they were there by 2p and finished in less than an hour. Professional, experienced, and friendly team. Will use them for all of my electrical needs moving forward. A+"
20 kw Cummins
Tesla Chargers in Apartment Parking Garage
Tesla Chargers in Apartment Parking Garage
20 KW Cummins
24 KW Generac

+7

Response time6 hrs
Response rate96%
7 neighbors recently requested a quote
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Avatar for E. A. Solar & Home Services, LLC
E. A. Solar & Home Services, LLC
5.0(
18
)
Fixed Generator - Install

Serving Alvin, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Very professional and knowledgeable team. Work was done on time and within a reasonable price. The work area was left as clean as before they started. I highly recommend Aaron and his team and I won't hesitate to call on them again."
Solar system
Solar system
Solar system
Solar system
Solar system

+5

7 neighbors recently requested a quote
Recommended by61%of homeowners
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Avatar for Precision Power Electrical Services LLC
Precision Power Electrical Services LLC
5.0(
13
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Alvin, TX and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We always offer FREE ESTIMATES and we offer 0% FINANCING FOR 18 MONTHS ZERO DOWN! We look forward to earning your business! Book with us online or feel free to give us a call today!

15 neighbors recently requested a quote
Recommended by46%of homeowners
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Avatar for ARS/ Rescue Rooter Houston South
ARS/ Rescue Rooter Houston South
4.1(
117
)
Fixed Generator - InstallFixed Generator - Repair

Serving Alvin, TX and surrounding areas

Approved (Corporate)

In business since 1991

Free estimates

Emergency services offered

Providing mechanical repair, maintenance and replacements, services residential & small commercial customer

Generator Installation
Recommended by85%of homeowners
Request Quote
Avatar for Coastal Electrical Services, LLC
Coastal Electrical Services, LLC
4.5(
16
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Alvin, TX and surrounding areas

Approved

In business since 2019

Free estimates

Offers commercial services

"Great service, friendly staff and explained everything. I felt my technician was honest and trustworthy."
Response time9 hrs
Recommended by100%of homeowners
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Precision Services
5.0(
4
)
Generator - Install - For Business

Serving Alvin, TX and surrounding areas

Approved

In business since 2016

Free estimates

Customers say: Quick response

"Donnie was a pleasure to work with on the phone. After describing what was required to install a Ring Floodlight, Donnie was able to provide a quote and time limit to perform the installation including some custom wiring. Jeff did the installation in the time frame quoted and the price was more reasonable than all other quotes received. I highly recommend them!"
Response time2 days
20 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
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Generator Install questions, answered by experts

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. 

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

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.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

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

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

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

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

The Alvin, TX homeowners’ guide to generator installs

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

See all articles