Get matched with top generator install pros in Holliston, MA

Q: How much does it cost to install a generator?

• <div><p>The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.</p><p>Cost breakdowns by generator type are typically as follows:</p><ul><li><p><b>Portable or Emergency Backup Generators (1kW&ndash;7.5kW):</b> $500&ndash;$2,000</p></li><li><p><b>Partial-Home Generators (9kW&ndash;20kW):</b> $2,000&ndash;$6,500</p></li><li><p><b>Whole-House Generators (22kW&ndash;48kW):</b> $5,000&ndash;$18,000</p></li></ul><p>To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.</p></div>

Q: How many days can a standby generator run continuously?

• <div><p>The <a href="https://www.angi.com/articles/how-long-can-whole-house-generator-run-continuously.htm">amount of time a standby generator can run continuously</a> is around <b>3,000 hours</b> on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home&rsquo;s natural gas supply are the best option for extended usage, as these won&rsquo;t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won&rsquo;t last as long, as these require fuel storage and regular refueling to stay running.</p></div>

Q: What is the life expectancy of a whole house generator?

• <div><p>With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.</p></div>

Q: Do diesel generators have any important downsides?

• <div><p>While diesel is relatively stable, it won&rsquo;t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it&rsquo;s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn&rsquo;t always ideal for home use. </p></div>

Q: Do natural gas generators produce carbon monoxide?

• <div><p>If you&rsquo;re wondering <a href="https://www.angi.com/articles/do-natural-gas-generators-produce-carbon-monoxide.htm">whether gas generators produce carbon monoxide</a>, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every<b> 6 to 12 months</b>. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.</p></div>

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Verified Reviews for Generator Install pros in Holliston, MA

*The Angi rating for Generator Install companies in Holliston, 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 Holliston, 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 February 22, 2026

Reviewed in February 2026
Generator would not start and if it did start, it would not run for long. Disassembled the carburetor, examined it and reassembled it. Engine starts and runs. All in his magic touch I guess. But I am very glad I now have a generator that runs since a storm is due to arrive within hours.
Kevin Aulenbach Electrician
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Reviewed in August 2025
This was the best decision I’ve made on a whim! I found the company online and Hannah was exceptional from the beginning scheduling the work to finishing the project. I had a few different projects going on and D’amani and his team were professional and got the job done within the budget we had...
D'Amani Daniel
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Reviewed in July 2025
Barros remodeling installed He installed the recessed light for me there, installed the refrigerator, installed the door lock, installed the doorbell
Barros remodeling
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Reviewed in June 2025
Steven did a phenomenal job installing a new 30amp interlock device at existing electrical panel and install 30amp 240 volt outdoor receptacle for standby generator. Affordable, reliable, and was great to work with. Steve was personable, professional, and I would highly recommend him for any...
Steven Sprott
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Reviewed in November 2024
They also installed my neighbors generator after mine, both houses full protected jn the event of an outage.
Cape Cod Electrical, Inc.
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Reviewed in May 2024
Kyle is a second generation roofer and his knowledge is excellent. We could understand him, learned to trust him and he was very straight forward with pricing and scheduling. Everything was on time and there were zero excuses. Kyle was on site personally and he was proud that his team was...
Desautels Roofing
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Reviewed in August 2023
In addition to a totally renovated bathroom, Kirk also replaced several windows, replaced a deck, coordinated the installation of a generator and painted the entire home. He did a fabulous job with everything. He worked in a very timely manner and the quality of his work was excellent. ...
ASK Home Improvements, LLC
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Reviewed in September 2021
We used Generation Painting for both the home we bought and the home we sold. Great experience and quality work, would definitely recommend Vinny and team.
Generation Painting
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Reviewed in April 2021
Premier Generator gave me a great experience with my whole house generator installation. Professional, punctual, friendly, and very meticulous, the team at Premier gets high marks from me. To top it all off, they had the best price by a substantial margin. I would highly recommend Premier...
Premier Generator by Paul Foley Electric
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Reviewed in October 2020
Outstanding! The technician, Brian MacFarland, arrived as promised and was professional, friendly, efficient and knowledgeable about our system, replacement filters, and virus control. Based on our conversation when he arrived, Brian recommended we consider installing an iWave-R ion generator to...
Sila Heating, Cooling, Plumbing and Electrical
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Find Generator install pros in Holliston

Joseph Jackson

5.0(

)

Portable Generator - Install

Serving Holliston, MA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Joe came out promptly quoted in writing on installing my EV charger. I received other quotes and found his very competitive. He set up the appointment to install and was on time and did a great job on the installation and left the area in great shape. I would recommend his work."

Response time2 hrs

Response rate94%

Recommended by96%of homeowners

Fixed Generator - InstallPortable Generator - Install

Serving Holliston, 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."

Response time1 day

Response rate100%

10 neighbors recently requested a quote

Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Holliston, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"Great communication and coordination of plumber, electrician, and generator installation. Very friendly, very polite. Would highly recommend..."

Response time8 hrs

Response rate100%

17 neighbors recently requested a quote

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Champion Electrical Services Inc

5.0(

)

Fixed Generator - RepairPortable Generator - Repair

Serving Holliston, 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]

+17

115 neighbors recently requested a quote

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Champion Electrical Services Inc

5.0(

)

Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Holliston, MA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

128 neighbors recently requested a quote

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T K Lyden Electric & Generator, Inc.

3.9(

114

)

Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+1 more

Serving Holliston, MA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"The two young men who performed the installation were informative, professional, cordial, and they left the scene spotless. There was a technical problem with the engine on the generator itself, which they weren't able to help with, because they weren't licensed to work on the specific brand of generator. That might be something to check on before hiring for this type of job."

+45

Response time1 day

32 neighbors recently requested a quote

Recommended by91%of homeowners

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T K Lyden Electric & Generator, Inc.

3.9(

114

)

Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Holliston, MA and surrounding areas

Approved

In business since 1994

Free estimates

Credit card accepted

T.K. Lyden Electric & Generator Inc. is a family owned electrical contractor with over 50 years of experience serving Central & Western Massachusetts and Southern New Hampshire. We provide complete standby power solutions featuring Generac, Kohler, Briggs & Stratton, Honeywell, and other major brands. Our team offers installation, repairs, warranty service, and annual maintenance plans.

4 neighbors recently requested a quote

Recommended by91%of homeowners

Portable Generator - Install

Serving Holliston, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Warranties offered

"Very prompt, excellent job in installing a fan in the bathroom. Overall, I would hire them again for electrical work."

Response time7 hrs

13 neighbors recently requested a quote

Recommended by95%of homeowners

Fixed Generator - InstallGenerator - Install - For Business

Serving Holliston, MA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"Highly recommend Ryan for electrical work. He guided the design, installed everything quickly and managed the inspections. It was great working with him and we love our new kitchen!"

+73

Response time2 days

3 neighbors recently requested a quote

Recommended by100%of homeowners

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Cotti-Johnson Heating-Cooling-Electrical

4.7(

168

)

Fixed Generator - InstallPortable Generator - InstallGenerator - Install+2 more

Serving Holliston, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1948

Free estimates

Emergency services offered

"generator installation and outdoor lighting"

+62

Response time10 hrs

60 neighbors recently requested a quote

Recommended by88%of homeowners

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Showing 1-10 of 154

Generator Install questions, answered by experts

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000
Partial-Home Generators (9kW–20kW): $2,000–$6,500
Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

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.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

If you’re wondering whether gas generators produce carbon monoxide, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every 6 to 12 months. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.

The Holliston, MA homeowners’ guide to generator installs

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

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•
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•
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•
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