*The Angi rating for Generator Install companies in Wellesley, 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 Wellesley, 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 December 11, 2024
Serving Wellesley, MA and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Installed a car charger for us. Did a great job."
+27
Serving Wellesley, 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 Wellesley, MA and surrounding areas
Approved
In business since 2008
Free estimates
Offers commercial services
"Great experience. They installed an EV charger in hour garage. Fast, reliable and very professional."
Serving Wellesley, 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 Wellesley, MA and surrounding areas
Approved
In business since 2025
Free estimates
Emergency services offered
At Champion Electrical Services, we believe homeowners deserve better. No more no-shows, rushed work, or upsells you don't need. We built this company to do things right - with respect, craftsmanship, and pride. Every project is treated like it's being done in our own home: clean, code-compliant, and built to last. Whether you need a panel upgrade, EV charger, generator, or quick repair, we show up when it counts and earn your trust every time. \nLicensed, insured, and proudly serving MA & RI. \nWhen the lights go out, don't call just anyone. Call the Champ.\n\n(774) 331-3500 \nCalltheChamp.com \[email protected]
Serving Wellesley, MA and surrounding areas
Approved
In business since 1990
Free estimates
Emergency services offered
"Excellent service. Ryan was professional, flexible, quick with response time and very reasonably priced. I would highly recommend his company for any electrical work needed for your home."
+73
Serving Wellesley, MA and surrounding areas
Approved
Super Service Award Winner
In business since 1987
Free estimates
Warranties offered
"Mr Nichols came quickly for the estimate, was here when he said he'd be here and had my 220 line installed in no time. I will hire him again."
Serving Wellesley, MA and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1948
Free estimates
Emergency services offered
"Jason and his team with Cotti-Johnson did an excellent job updating our electrical boxes, installing the washer/dryer hookup, and getting us setup with a generator! Sam, our assigned electrician, even took the time to go through the entire operation of the generator from A-Z. I would definitely recommend them for any electrical work!"
+62
Serving Wellesley, MA and surrounding areas
Approved
Super Service Award Winner
In business since 1986
Free estimates
Emergency services offered
"Very professional electrician, works diligently , courteous and does his job promptly. Willing to share information with client about appliance maintenance. We would definitely hire him again and recommend him to others."
Serving Wellesley, MA and surrounding areas
Approved
In business since 1996
Free estimates
Emergency services offered
"Everything was explained and options found. The result of the work was a lot better than I had imagined. Jeff was quite professional yet with an understanding heart. I'd hire him again for my electrical needs."
+8
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.
