*The Angi rating for Generator Install companies in Hamilton, MA 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 Hamilton, MA 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 April 22, 2025
Serving Hamilton, MA and surrounding areas
Approved
In business since 2007
Free estimates
Warranties offered
"He quickly diagnosed the issue with the generator, ordered the part and installed it. All is well!"
+13
Serving Hamilton, MA and surrounding areas
Approved
In business since 1999
Free estimates
Emergency services offered
"During the walkthrough John was easy to chat with on what we were looking for in this project. We were looking to get some ethernet drops installed so that a new hardwired ethernet and wireless network could be installed by North Shore IT ([*** Link removed ***] Once we agreed to the project, Bill and Nico were easy to work with and were very expedient. They completed the job over a day and a half and did a great job at minimizing the impact to the walls and floors. I would definitely recommend JP McCurdy electrical services to others and would use them again!"
+9
Serving Hamilton, MA and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Upwire Electric is an exceptional company. They have installed a whole house generator for me as well as new electrical outlets and switches. Also replaceing old wornout electrical switches. Their workers are outstanding ( always professional, friendly and cheerful). I highly recommend Upwire Electric Company and their team."
Serving Hamilton, MA and surrounding areas
Approved
In business since 2011
Emergency services offered
Customers say: True professional
"Scott did an excellent job for us. We needed an EV charger installed and a few other things done. He came by, sized up the job and gave us an estimate. In a few days he showed up ready work. He installed the EV charger, re[laced 4 thrmostats, and fixed a doorbell. All went well. His price was reasonable. He worked quickly and efficiently and got everytjing right the first time. I highly recommenr Moses Electric and would glady hire Scott for future electrical jobs."
+1
Serving Hamilton, MA and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"I reached out to couple of companies and ultimately decided to go with NETR, and I’m glad I did. From the salesman Chip, to the installer Daniel Rodriguez, their professionalism was exceptional. Their work ethic and attention to detail sets them apart from other companies in this business. Daniel is an expert and went above and beyond to make sure everything was tidy and perfect! They’re really invested in customer satisfaction!"
+9
Serving Hamilton, MA and surrounding areas
Approved
In business since 2020
Free estimates
Credit card accepted
"My Unit had been jerry rigged really bad by a home owner. Santo Electric solved the issues and revamped all the outlets in my unit. I'm also saving $ on my electrical bill. I would hire them again. Five stars!"
Serving Hamilton, MA and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"Daniel worked with me and my schedule, to replace an outlet. He was nice and knowledgeable and priced accordingly. I would hire him again"
Serving Hamilton, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"The install crews from weathervane were mostly well informed and efficient. The mini/split system seems to be working well. My only---heads-up with not just this company, but just about everyone now a days is that I do not text. (Dexterity issue) So I was not always "in the loop"."
Serving Hamilton, MA and surrounding areas
Approved (Corporate)
In business since 1988
Free estimates
Emergency services offered
"Excellent service! My new boiler was installed at the start of heat season and worked so efficiently this winter. Heritage worked with me throughout the install and follow up service process. I highly recommend them."
+27
Serving Hamilton, MA and surrounding areas
Approved
In business since 1985
Free estimates
Emergency services offered
"First and foremost, Joel was a pleasure to work with! Joel was extremely knowledgeable and helpful with the installation of our new Google nest. We were impressed with how prompt & easy going he was! Definitely going to be using him & recommending to family & friends."
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
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 value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
From average costs to expert advice, get all the answers you need to get your job done.
The cost to install a whole-house generator in Boston, MA varies based on factors like generator size, fuel type, and installation complexity. Learn the typical price range and what influences your total cost.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Generators should give you peace of mind, but you’ll only get that if your installer knows what they’re doing. Learn how to hire a pro and what red flags to look for.
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
