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Avatar for Generator Supercenter of Maine
Generator Supercenter of Maine
4.6(
40
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Harpswell, ME and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Diagnosed the problem and repaired my generator so it starts and runs well. I will be using them from now on for all of my generator service in the future. They are a first class company."
Generator Install
18KW Installation
Preparation for the day
Photos
Response time2 days
Response rate100%
96 neighbors recently requested a quote
Generators of Maine, Inc.
5.0(
5
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Harpswell, ME and surrounding areas

Approved

In business since 2014

Free estimates

Offers commercial services

"Generators of Maine just completed the installation of a 14kw generator with parallel transfer switches, to protect 2 separate metered panels at a rental property that I own. I didn't even know that this was possible, until Doug Sawyer suggested it. The incremental cost of protecting the additional panel with the parallel transfer switch arrangement was a fraction the cost of an additional generator and transfer switch. Throughout the job, Doug and his crew were awesome. I am a terrible snoop who enjoys technology, so I hung around just watching and learning. They didn't seem to mind my presence and were friendly and informative through out the install. Every aspect of the job was 100% top-notch. Doug also managed to under bid his nearest competitor on every component and aspect of the job, including the annual maintenance contract, which I deemed to be worth the $$$. I highly recommend Generators of Maine."
Response time4 hrs
Recommended by100%of homeowners
Avatar for Casco Bay Generators LLC
Casco Bay Generators LLC
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Harpswell, ME and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

We are proud to be a Veteran-operated, Titanium Level Kohler® licensed and insured generator dealer. We teamed with Kohler® to give you peace of mind that you are working with a dealer-trained, factory-authorized provider to handle these appliances. We offer all Kohler® and Generac warranties and maintenance services. These are the industry’s best products for backup protection at your home or office.\nWe are also proud to work with Efficiency Maine, offering discounts, rebates, loans, and other initiatives to promote high-efficiency equipment that help Maine’s homes and businesses reduce their energy costs and lower their greenhouse gas emissions.\nProfessionally installing a standby generator and/or heat pump for your home or business is one of the best investments you can make. .\nWe at Casco Bay Generators & Heat Pumps keep the power on 24 hours a day, 365 days a year.

Standard installation.
Response time2 days
Response rate92%
17 neighbors recently requested a quote
Avatar for Tru Blu Electric
Tru Blu Electric
4.4(
17
)
Fixed Generator - InstallPortable Generator - Install

Serving Harpswell, ME and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Small jobs welcome

Customers say: Quick response

"Cory was communicative and professional. He showed up on time and was reasonably priced. I gave him two light fixtures completely boxed up and he had them installed in my bathroom in a couple hours as well as changing a switch over to a dimmer. There was even some trouble with my ceiling wiring and he troubleshooted on the spot. Very appreciative!"
ceiling fan install
new light install
new light install
new light install
camera install

+4

Response time8 hrs
6 neighbors recently requested a quote
Recommended by40%of homeowners
Avatar for Veteran Wire Electric LLC
Veteran Wire Electric LLC
5.0(
5
)
Fixed Generator - InstallGenerator - Install - For BusinessGenerator - Repair - For Business

Serving Harpswell, ME and surrounding areas

Approved

In business since 2024

Credit card accepted

VETERAN WIRE ELECTRIC LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Panel
15 neighbors recently requested a quote
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Generator Install questions, answered by experts

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

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.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

The Harpswell, ME homeowners’ guide to generator installs

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