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Avatar for Cotti-Johnson Heating-Cooling-Electrical

Cotti-Johnson Heating-Cooling-Electrical

30 Waverly St
4.68(
155
)
Approved Pro

Cotti-Johnson Heating-Cooling-Electrical

30 Waverly St
4.68(
155
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
975 local quotes requested

Experiencing issues with your heating, air conditioning, plumbing, or electrical systems? Cotti-Johnson is your reliable one-stop shop for all home comfort needs. From simple fixes to large-scale projects, our professional team handles everything with honesty and expertise. We offer 24/7 emergency services and specialized design services for landscape and indoor lighting. Trust us for top-notch, efficient, and transparent service. Visit our website at callcotti.com or call us at (833) 826-8844 to see how we can improve your home's comfort and efficiency.

"Happy with the work, and the customer service. Will definitely call on them for future work."

Fran P on June 2025

Experiencing issues with your heating, air conditioning, plumbing, or electrical systems? Cotti-Johnson is your reliable one-stop shop for all home comfort needs. From simple fixes to large-scale projects, our professional team handles everything with honesty and expertise. We offer 24/7 emergency services and specialized design services for landscape and indoor lighting. Trust us for top-notch, efficient, and transparent service. Visit our website at callcotti.com or call us at (833) 826-8844 to see how we can improve your home's comfort and efficiency.

"Happy with the work, and the customer service. Will definitely call on them for future work."

Fran P on June 2025


Avatar for Nicholson Plumbing Heating & Air Conditioning Inc

Nicholson Plumbing Heating & Air Conditioning Inc

71 Whitney Street
4.54(
560
)
Approved Pro

Nicholson Plumbing Heating & Air Conditioning Inc

71 Whitney Street
4.54(
560
)
Approved Pro
Customers say: Super punctual
53 local quotes requested
25 years of experience

Nicholson Plumbing, Heating & Air Conditioning is the company of choice for all your plumbing, heating and air conditioning repair and replacement needs. Our commitment is to you, our customer, and to provide you with outstanding plumbing and HVAC service. You can rest assured with our 100% satisfaction guarantee, 24-hour emergency service, solid warranty and highly trained technicians. Serving the Metro West, MA's service and installation needs. Fully Licensed in MA Plumbing and Gas Fitting. Lic# 30207. Universal EPA Certified & 410A Certified. Fully Insured. Nicholson Plumbing, Heating & Air Conditioning offers a 5% senior discount on service repairs.

"Went very well and got more information than with other companies."

Susan H on April 2025

Nicholson Plumbing, Heating & Air Conditioning is the company of choice for all your plumbing, heating and air conditioning repair and replacement needs. Our commitment is to you, our customer, and to provide you with outstanding plumbing and HVAC service. You can rest assured with our 100% satisfaction guarantee, 24-hour emergency service, solid warranty and highly trained technicians. Serving the Metro West, MA's service and installation needs. Fully Licensed in MA Plumbing and Gas Fitting. Lic# 30207. Universal EPA Certified & 410A Certified. Fully Insured. Nicholson Plumbing, Heating & Air Conditioning offers a 5% senior discount on service repairs.

"Went very well and got more information than with other companies."

Susan H on April 2025


Avatar for Wired Electrical Contractors, Inc.

Wired Electrical Contractors, Inc.

277 MAIN ST
4.91(
196
)
Approved Pro

Wired Electrical Contractors, Inc.

277 MAIN ST
4.91(
196
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
84 local quotes requested

At WIRED Electrical Contractors, we’re pursuing excellence: from your initial consultation to our superior warranties and follow-through. Owned and operated by master electrician Paul Crowley, our team of trained and certified master electricians provide MetroWest MA homeowners with quality craftsmanship, upfront pricing, and attentive responsiveness throughout every project phase. Our focus on quality has earned us the Angi Super Service Award for ten years running. We are a full service residential electrical contractor. We specialize in home EV charging installations and are Tesla trained and certified. We are also certified installers with Qmerit, Chargepoint, and ClipperCreek.

"Same day service! Electrician was very friendly and knowledgeable. Would recommend."

Sydney S on July 2024

At WIRED Electrical Contractors, we’re pursuing excellence: from your initial consultation to our superior warranties and follow-through. Owned and operated by master electrician Paul Crowley, our team of trained and certified master electricians provide MetroWest MA homeowners with quality craftsmanship, upfront pricing, and attentive responsiveness throughout every project phase. Our focus on quality has earned us the Angi Super Service Award for ten years running. We are a full service residential electrical contractor. We specialize in home EV charging installations and are Tesla trained and certified. We are also certified installers with Qmerit, Chargepoint, and ClipperCreek.

"Same day service! Electrician was very friendly and knowledgeable. Would recommend."

Sydney S on July 2024


Avatar for FM Generator

FM Generator

35 Pequit St
4.70(
20
)
Approved Pro

FM Generator

35 Pequit St
4.70(
20
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
34 local quotes requested

We are a full-service home generator provider offering turnkey residential installations, service contracts, and emergency response, we also install whole home backup batteries.***WE DO NOT SERVICE PORTABLE GENERATORS** Family owned and operated, we have sold, installed and serviced generators for over 40 years! Our history is working with commercial generators, so we know the importance of reliability! Reliability is our product which is why we sell Fortress, an exclusive Briggs and Stratton brand of home generators. We can even save you money on a smaller generator with the Symphony II Home Power Management System! FM Generator - Keeping Families Powered for over 40 years! **Fully installed automatic home power system packages starting at $7,500**

"They were able to send someone to the house within a few days of initial contact. He wasn’t able to troubleshoot the problem directly but he was able to reach out to someone who could and everything was taken care of quickly and efficiently. Would absolutely contact them again in the future!"

Amanda F on January 2025

We are a full-service home generator provider offering turnkey residential installations, service contracts, and emergency response, we also install whole home backup batteries.***WE DO NOT SERVICE PORTABLE GENERATORS** Family owned and operated, we have sold, installed and serviced generators for over 40 years! Our history is working with commercial generators, so we know the importance of reliability! Reliability is our product which is why we sell Fortress, an exclusive Briggs and Stratton brand of home generators. We can even save you money on a smaller generator with the Symphony II Home Power Management System! FM Generator - Keeping Families Powered for over 40 years! **Fully installed automatic home power system packages starting at $7,500**

"They were able to send someone to the house within a few days of initial contact. He wasn’t able to troubleshoot the problem directly but he was able to reach out to someone who could and everything was taken care of quickly and efficiently. Would absolutely contact them again in the future!"

Amanda F on January 2025


Avatar for VMA Electric Inc

VMA Electric Inc

81 Maple St
4.83(
445
)
Approved Pro

VMA Electric Inc

81 Maple St
4.83(
445
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
242 local quotes requested

Medium size Electrical Company based out of Metrowest Area. Currently have 9 licensed employees. Always free estimates. All pricing is based on specific work.

"The installation went quickly and easily for us, and the level 2 charger is just where we need it. I am grateful that I can park, get charging, and be in the house with a cup of tea within a few short minutes. It is so convenient, and the car charges quickly. The VMA installers were so helpful in getting me started once the installation was finished. We have had VMA do quite a few household projects for us, and everything about them is excellent, from scheduling, to the actual work, and to billing. Highly recommend!"

Rosalind F on September 2025

Medium size Electrical Company based out of Metrowest Area. Currently have 9 licensed employees. Always free estimates. All pricing is based on specific work.

"The installation went quickly and easily for us, and the level 2 charger is just where we need it. I am grateful that I can park, get charging, and be in the house with a cup of tea within a few short minutes. It is so convenient, and the car charges quickly. The VMA installers were so helpful in getting me started once the installation was finished. We have had VMA do quite a few household projects for us, and everything about them is excellent, from scheduling, to the actual work, and to billing. Highly recommend!"

Rosalind F on September 2025


Avatar for S & S ELECTRIC

S & S ELECTRIC

844 Putnam Pike
4.67(
81
)
Approved Pro

S & S ELECTRIC

844 Putnam Pike
4.67(
81
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
73 local quotes requested

S&S Electric is locally owned and operated by Scott Ware. We have 20 years experience in the field, servicing RI and MA. We have become a name for service excellence, integrity and reliability. S&S Electric meets the electrical service and repair needs of many customers each day. We deliver the highest quality of electrical service and repair to homes and businesses. Whether it’s a simple light fixture installation or rewiring a complete home, S&S Electric is the name customers think of first. We value all our customers equally, regardless of how big or small the job may be. We look forward to serving you and providing solutions for your electrical needs. All our work is done in an efficient, timely and professional manner and we offer very competitive rates.

"They were excellent workers"

Linda M on August 2024

S&S Electric is locally owned and operated by Scott Ware. We have 20 years experience in the field, servicing RI and MA. We have become a name for service excellence, integrity and reliability. S&S Electric meets the electrical service and repair needs of many customers each day. We deliver the highest quality of electrical service and repair to homes and businesses. Whether it’s a simple light fixture installation or rewiring a complete home, S&S Electric is the name customers think of first. We value all our customers equally, regardless of how big or small the job may be. We look forward to serving you and providing solutions for your electrical needs. All our work is done in an efficient, timely and professional manner and we offer very competitive rates.

"They were excellent workers"

Linda M on August 2024


Avatar for Rodenhiser Home Services

Rodenhiser Home Services

325 Hopping Brook Rd
4.39(
506
)
Approved Pro

Rodenhiser Home Services

325 Hopping Brook Rd
4.39(
506
)
Approved Pro
Customers say: Super punctual
407 local quotes requested
97 years of experience

When it comes to great service for your home or business, it doesn't get better than the professionalism and dedication of Rodenhiser. It's an unsurpassed level of service built on a promise that ensures you get the very best - when you call Rodenhiser your satisfaction is guaranteed. With 90+ years of delighted residential and commercial clients, you can be sure that it's a promise that Rodenhiser delivers on every day.

"The work was done correctly and promptly, but quite expensive. On the plus side, he presented all the options and didn't really try to upsell. Just the facts."

Stephen M on August 2024

When it comes to great service for your home or business, it doesn't get better than the professionalism and dedication of Rodenhiser. It's an unsurpassed level of service built on a promise that ensures you get the very best - when you call Rodenhiser your satisfaction is guaranteed. With 90+ years of delighted residential and commercial clients, you can be sure that it's a promise that Rodenhiser delivers on every day.

"The work was done correctly and promptly, but quite expensive. On the plus side, he presented all the options and didn't really try to upsell. Just the facts."

Stephen M on August 2024


Avatar for Heritage Home Service

Heritage Home Service

109 Washington St
4.29(
21
)
Approved Pro

Heritage Home Service

109 Washington St
4.29(
21
)
Approved Pro
Customers say: Quality work
266 local quotes requested
39 years of experience

Heritage Home Service is proud to serve residents from Massachusetts. We are the area’s premier home services provider and for 35+ years, we’ve brought the Heritage touch to homes throughout the state.

"I was told that the fee to simply come into my house to assess my furnace (that was not working) would be $260 on a Wednesday afternoon... and I was told this fee would not be absorbed into the work if I chose to have it done. If this company charges such an exorbitant assessment fee, I could only believe they would inflate other fees as well. I hired another local company for half that fee to assess then repair my furnace. Shame on Heritage Home Service."

Jeffrey D on December 2024

Heritage Home Service is proud to serve residents from Massachusetts. We are the area’s premier home services provider and for 35+ years, we’ve brought the Heritage touch to homes throughout the state.

"I was told that the fee to simply come into my house to assess my furnace (that was not working) would be $260 on a Wednesday afternoon... and I was told this fee would not be absorbed into the work if I chose to have it done. If this company charges such an exorbitant assessment fee, I could only believe they would inflate other fees as well. I hired another local company for half that fee to assess then repair my furnace. Shame on Heritage Home Service."

Jeffrey D on December 2024


Avatar for Trudell Electrical Contractors

Trudell Electrical Contractors

178 Church St
4.96(
12
)
Approved Pro

Trudell Electrical Contractors

178 Church St
4.96(
12
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

At Trudell Electrical Contractors, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote. 

"Amazing customer service. Friendly attitude. Quick and efficient."

Rehman C on July 2021

At Trudell Electrical Contractors, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote. 

"Amazing customer service. Friendly attitude. Quick and efficient."

Rehman C on July 2021


Avatar for Joseph Jackson

Joseph Jackson

3 Morningside Lane
5.00(
53
)
Approved Pro

Joseph Jackson

3 Morningside Lane
5.00(
53
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
3 years of experience

With over three decades of experience, I am dedicated to delivering exceptional service in every aspect of my business. My unique distinction is in the quality of service I provide to my customers and my communications throughout the project. Above all, I prioritize the well-being and satisfaction of my customers.

"Joseph did an excellent job installing my Tesla Wall Connector. He was on time, very professional, and completed the work quickly with great attention to detail. The installation looks clean and works perfectly. He also took the time to explain everything and made sure it was tested before leaving. I’m very satisfied with the service and highly recommend him for any electrical work."

Krishna J on August 2025

With over three decades of experience, I am dedicated to delivering exceptional service in every aspect of my business. My unique distinction is in the quality of service I provide to my customers and my communications throughout the project. Above all, I prioritize the well-being and satisfaction of my customers.

"Joseph did an excellent job installing my Tesla Wall Connector. He was on time, very professional, and completed the work quickly with great attention to detail. The installation looks clean and works perfectly. He also took the time to explain everything and made sure it was tested before leaving. I’m very satisfied with the service and highly recommend him for any electrical work."

Krishna J on August 2025

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Showing 1-10 of 132
Generator Install questions, answered by experts

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

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.

A whole house generator can be worth the extra money for peace of mind if your home is prone to power outages for extended periods of time or if you have life-saving medical equipment that needs to maintain power at all times. These devices can also increase your home’s value, especially in areas prone to extreme weather and power outages.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

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The Mendon, MA homeowners’ guide to generator installs

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