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Avatar for HR Phoenix Electrical Services
HR Phoenix Electrical Services
4.5(
482
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Prosper, TX and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Phoenix electrical is owned by Paul, a master electrician, who does the initial consultation to figure out a quote, he is very direct and honest but easy to talk to and work with. Their customer service is excellent, they kept me well informed throughout the process and were very friendly and accommodating. Pheonixs quote was fair without question, his crew had a tough job installing a generator transfer switch kit set up, I live in a house built in the late 80s, so, the electrical system is a bit older and they ran into issues but they worked non stop and persevered through the challenges, found solutions, and completed the job as promised. Without question, I recommend Phoenix Electrical, and I will certainly seek them out first for any future electrical work. Thank you."
Kohler Generator
Response time1 day
Recommended by91%of homeowners
Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Prosper, TX and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

Tri-State Water, Power & Air has been provided products designed to improve the comfort and quality of life of our customers since 1992. Our specialty is Automatic Home Standby Generators. \nWe expect customer service excellence and aim to go above and beyond on every call. With 10 locations across 8 states, Tri-State is always ready to serve you.

Additional Photos
109 neighbors recently requested a quote
Avatar for Hilliard Electric LLC DBA KC Electric Systems
Hilliard Electric LLC DBA KC Electric Systems
5.0(
8
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Prosper, TX and surrounding areas

Approved

In business since 1994

Warranties offered

Small jobs welcome

"Needed electrical outlets updated and replaced. Also had freestanding generator outlet wired into my existing panel. All was done on time and did not exceed budget. Clark was honest, consultative, efficient, and engaging. Highly recommend!!"
DALLAS RESTAURANTS
DALLAS RESTAURANTS
DALLAS RESTAURANTS
DALLAS RESTAURANTS
PANEL RE-WORK

+1

Response time4 hrs
Recommended by12%of homeowners
Avatar for PROVISION ELECTRIC, LLC
PROVISION ELECTRIC, LLC
5.0(
13
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Prosper, TX and surrounding areas

Approved

In business since 2025

Credit card accepted

Offers commercial services

"Provision Electric did an amazing job replacing our outdoor entryway light. He was incredibly flexible when Amazon delayed delivery of the fixture and still worked with our schedule. Installation was quick and efficient, and he even went above and beyond by running to get light bulbs when I completely forgot to buy them. Excellent service, professional, and truly cared about making sure everything was perfect. We’ll definitely be using Provision Electric again for any future electrical needs!"
Full residential rewire
Custom Home remodel
Custom Home remodel
Industrial power
Industrial power

+24

2 neighbors recently requested a quote
Avatar for GLOW JOE ELECTRIC LLC
GLOW JOE ELECTRIC LLC
5.0(
18
)
Portable Generator - Install

Serving Prosper, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Warranties offered

Small jobs welcome

"Very professional and hard working. He installed 4 chandeliers and a bathroom light fixture for us and did an amazing job! I would highly recommend him and will use him again next time I need electrical work. I give him a 10+++"
Response time3 hrs
Response rate100%
Recommended by23%of homeowners
Avatar for DNA Electric Heating & Air Conditioning
DNA Electric Heating & Air Conditioning
5.0(
2
)
Fixed Generator - Install

Serving Prosper, TX and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

With 20+ years of dedicated electrical experience and 10+ years dedicated in HVACR, we specialize in providing top-tier solutions for residential, commercial and industrial applications, all driven by a singular goal; to provide the best service possible!\n

Warranty compressor
Warranty compressor
Warranty compressor
Evap coil cleaning
Evap coil cleaning

+4

Response time1 day
Response rate90%
5 neighbors recently requested a quote
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Generator Install questions, answered by experts

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

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.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

The Prosper, TX homeowners’ guide to generator installs

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