*The Angi rating for Generator Install companies in Berlin, 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 Berlin, 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 October 25, 2025
Serving Berlin, MA and surrounding areas
Approved
Super Service Award Winner
In business since 1973
Free estimates
Emergency services offered
"Paul is excellent and meticulous. He did a great job installing our charger and left the site clean."
Serving Berlin, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2005
Free estimates
Emergency services offered
"From the office folks to the electrician who did the work -- friendly and professional. They quoted the lowest price of three estimates and did the work within a couple of weeks. I purchased my generator elsewhere online... and VMA walked me thru the process of hooking it up, running it, and shutting it down. Very helpful."
Serving Berlin, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2003
Free estimates
Emergency services offered
"We hired Joe to upgrade our electrical service (from 100A to 200A), install a bigger roof panel, and a generator interlock. From start to finish he made the whole process painless. He worked around our schedule and we are very pleased with the outcome. Will definitely call him again for future projects."
+171
Serving Berlin, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2025
Free estimates
Emergency services offered
"Jayron was the technician who performed the hardware troubleshooting. He was patient and quickly completed the job, improving the previous WiFi device installation."
+19
Serving Berlin, MA and surrounding areas
Approved
In business since 2006
Emergency services offered
Warranties offered
"Paul and his staff installed outside spot lights outside! Also gfi plugs and outlets for my tv and internet services! The finished and did a thorough job! Very professional and extremely polite!"
+6
Serving Berlin, MA and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Very responsive, came out for a quote in a timely manner which I can't say many others did. Has responded quickly to my emails to answer any question I have posed. The crew came on time to position the generator and had it in place as described. As soon as Tim and Robert were notified of gas connection they scheduled final install, showed up exactly on time and completed work in a very professional manner. Very happy with the entire process."
+45
Serving Berlin, MA and surrounding areas
Approved
In business since 2007
Emergency services offered
Credit card accepted
"John arrived on time. He was personable and professional. He installed three ceiling fans and switches. The job was done well, and the rooms were clean when he finished. Couldn't have asked for better results."
Serving Berlin, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2016
Free estimates
Emergency services offered
"Marc is now my go-to person for any electrical work I need done. He was prompt, provided an accurate price range that included the hardware for the install. The install went without a hitch and my new exterior electrical outlets look and work flawlessly. There was no evidence that anyone even came on site. I would certainly recommend Marc to anyone who needs any electrical work done!"
Serving Berlin, MA and surrounding areas
Approved
In business since 2014
Free estimates
Small jobs welcome
"Quickly assessed the problem...my fan had shorted out. I got a replacement fan and had it installed. Steven arrived on time, was very efficient, easy to talk to. I'm very pleased with the interaction and final result. Very fair pricing, too. I will definitely call him for any future electrical issues."
Serving Berlin, MA and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"The technicians Gregg and Caleb did a great job. They were courtesy, knowledgeable, hard working and arrived on time. They explained every step of the process to me. I will use N.E.T.R Inc. in the future."
+9
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 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.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Before installing a fixed generator, think about your use and space. Review these backup generator questions to prepare for a talk with your contractor.
Using a generator during a power outage is a lifesaver. Our guide will show you how to connect a generator to your house without a transfer switch.
Installing a portable generator can power key appliances during outages. Learn about the best backup generator questions to discuss with a pro.
