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TRUSTED BY HOLLY, MI HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon35
    Verified generator installs reviews

Find Generator install pros in Holly

Avatar for Mr. Electric
Mr. Electric
4.5(
41
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving Holly, MI and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Very happy with my experience with Mr. Electric. I have used them to put in my whole house generator. They were great. Sam Stone is awesome. He showed up on time and upgraded our panel box. I found him to be very professional and knowledgeable. I would highly recommend this company and Sam Stone for all electrical services"
Response time8 hrs
16 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Electrician Near Me LLC
Electrician Near Me LLC
5.0(
10
)
Generator - Install - For BusinessPortable Generator - Install

Serving Holly, MI and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"Andrew did an excellent job replacing my electrical panel. He was professional, knowledgeable, and took the time to explain everything clearly. The work was completed efficiently, and everything looks great. I'm very satisfied with the quality of the installation and would definitely recommend Andrew to anyone needing electrical work."
Service panels
Wholehouse Generator
New Panel
New construction
7 neighbors recently requested a quote
Avatar for PM Technologies
PM Technologies
3.7(
16
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Holly, MI and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"It went very well, Cody arrived on time, explained what he was doing and did it. I find Cody Thompson to be a very good service man and was satisfied with him arriving on time, doing his job and telling when he was done and what he had done. Thank You !!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

18 neighbors recently requested a quote
Recommended by42%of homeowners
Avatar for Superior Power & Lighting, Inc.
Superior Power & Lighting, Inc.
4.5(
130
)
Fixed Generator - InstallPortable Generator - Install

Serving Holly, MI and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"The guys arrived on time. Kept me informed as to what was being done. Confirmed placement of the floor outlet and outside switch. Work was done beautifully. After installation, they cleaned up!"
SUPERIOR POWER & LIGHTING
NEVER BE WITHOUT POWER AGAIN
Verizon lighting
Custom ceiling fans
Accent lighting

+2

Response time12 hrs
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for True Line Electric
True Line Electric
5.0(
7
)
Fixed Generator - InstallFixed Generator - Repair

Serving Holly, MI and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"You will not find anyone more knowledgeable, dependable and trustworthy than Doug for your electrical needs!! Stacey is terrific on the admin side of things and keeps the business running smoothly. Together, they make such a terrific team! We have had Doug take care of our needs throughout several homes that we have owned over the years. There is no one else that I would want to take care of us than True Line Electric!!"
25 neighbors recently requested a quote
Avatar for AYN Construction & Electric
AYN Construction & Electric
4.8(
9
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Holly, MI and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Showed up on time, got the upgrade from 100 amp to 200 amp service done in 2 1/2 hours and, were curtious to keep the noise level down as much as possible, because I sleep and work 2nd shift and normally don't wake up till 4p.m."
Response time4 hrs
Response rate95%
10 neighbors recently requested a quote
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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.

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.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

The Holly, MI homeowners’ guide to generator installs

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