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Find Boiler repair pros in Chelmsford

Avatar for NETR Inc

NETR Inc

4.79(
76
)
Approved Pro

NETR Inc

4.79(
76
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
240 local quotes requested

For emergency services, please call 781-933-6387. N.E.T.R., Inc. is here to help homeowners install the best heating and cooling systems that fits their needs. Since 1989, we’ve installed heating and cooling systems in Boston and its surrounding areas, tackling tough problems that our clients face. Our goal is to ensure our clients have energy efficient, quiet, reliable systems so they can live their lives to the fullest both at home and at work. Our dedication to our customers’ needs is what drives us each and every day. Our approach to temperature control and comfort has helped us become one of the most respected names in heating, cooling, and refrigeration in New England

"Before installing a mini-split, the sales person told me that I'd need to cut down an interior shelf to a specific height. I paid a handyman $400 to do exactly what the sales person instructed. Later on, N.E.T.R. came and did the installation; however, AFTER the installation, a technician told me that they hadn't accounted for the vent opening and closing and that the shelf would need to be further cut down. As you can imagine, this type of service is rather ridiculous. If they knew that the shelf would need further cutting, they should have NOT installed the unit. I have called N.E.T.R. six (6) times in three weeks, and no one has called me back about this issue. After paying for the unit and for a handyman, it's ridiculous that I have AC that is compromised because no one with the company thought to properly measure the space so that the work by the handyman could be done once. At this point, I'd like for N.E.T.R. to take care of this for me."

Linda O on June 2025

For emergency services, please call 781-933-6387. N.E.T.R., Inc. is here to help homeowners install the best heating and cooling systems that fits their needs. Since 1989, we’ve installed heating and cooling systems in Boston and its surrounding areas, tackling tough problems that our clients face. Our goal is to ensure our clients have energy efficient, quiet, reliable systems so they can live their lives to the fullest both at home and at work. Our dedication to our customers’ needs is what drives us each and every day. Our approach to temperature control and comfort has helped us become one of the most respected names in heating, cooling, and refrigeration in New England

"Before installing a mini-split, the sales person told me that I'd need to cut down an interior shelf to a specific height. I paid a handyman $400 to do exactly what the sales person instructed. Later on, N.E.T.R. came and did the installation; however, AFTER the installation, a technician told me that they hadn't accounted for the vent opening and closing and that the shelf would need to be further cut down. As you can imagine, this type of service is rather ridiculous. If they knew that the shelf would need further cutting, they should have NOT installed the unit. I have called N.E.T.R. six (6) times in three weeks, and no one has called me back about this issue. After paying for the unit and for a handyman, it's ridiculous that I have AC that is compromised because no one with the company thought to properly measure the space so that the work by the handyman could be done once. At this point, I'd like for N.E.T.R. to take care of this for me."

Linda O on June 2025


Avatar for Sila Heating, Cooling, Plumbing and Electrical

Sila Heating, Cooling, Plumbing and Electrical

4.54(
5,210
)
Approved Pro

Sila Heating, Cooling, Plumbing and Electrical

4.54(
5,210
)
Approved Pro
Customers say: Super punctual
635 local quotes requested
36 years of experience

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"Great, as always. Sila is outstanding. We have a service contract with them for our furnace and AC and they keep them in tip-top shape. And when we have an urgent or emergency situation (heating, cooling, plumbing, electrical), they're who we call."

Jonathan P on November 2025

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"Great, as always. Sila is outstanding. We have a service contract with them for our furnace and AC and they keep them in tip-top shape. And when we have an urgent or emergency situation (heating, cooling, plumbing, electrical), they're who we call."

Jonathan P on November 2025


Avatar for Hancock Building Associates Inc

Hancock Building Associates Inc

4.88(
67
)
Approved Pro

Hancock Building Associates Inc

4.88(
67
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
17 local quotes requested

The complete residential remodeling company for over forty years. We have ten full time, year-round area craftsmen that work exclusively for us full time. We limit subcontracting & focus on quality & standing behind our work. Home improvement registration #100158, construction supervisor license #16524, certified aging-in-place specialist, certified master roofer, vsi certified master vinyl sider, certified skylight installer. Call us today! (978)256-2727

"Attention to detail , timely delivery , team coordination and voila a lovely renovation . Such a pleasure to work with ! Thank you so much . This motivated me to renovate the other parts of my home with you ! Thank you most of all for helping my dreams come true ."

Ratti H on June 2023

The complete residential remodeling company for over forty years. We have ten full time, year-round area craftsmen that work exclusively for us full time. We limit subcontracting & focus on quality & standing behind our work. Home improvement registration #100158, construction supervisor license #16524, certified aging-in-place specialist, certified master roofer, vsi certified master vinyl sider, certified skylight installer. Call us today! (978)256-2727

"Attention to detail , timely delivery , team coordination and voila a lovely renovation . Such a pleasure to work with ! Thank you so much . This motivated me to renovate the other parts of my home with you ! Thank you most of all for helping my dreams come true ."

Ratti H on June 2023


M.A. Paone Plumbing & Heating

4.66(
428
)
Approved Pro

M.A. Paone Plumbing & Heating

4.66(
428
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
85 local quotes requested

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Michael and his team was extremely professional and transparent with the process. I could always rely on Michael to share updates and get the job done effectively. His knowledge of his craft is unmatched and will absolutely reach out to him in the future for any repairs and maintenance in my home."

Cameron J on October 2025

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Michael and his team was extremely professional and transparent with the process. I could always rely on Michael to share updates and get the job done effectively. His knowledge of his craft is unmatched and will absolutely reach out to him in the future for any repairs and maintenance in my home."

Cameron J on October 2025


Avatar for Veglia Remodeling LLC

Veglia Remodeling LLC

4.99(
228
)
Approved Pro

Veglia Remodeling LLC

4.99(
228
)
Approved Pro
Customers say: True professional
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
90 local quotes requested

Jeff Veglia Remodeling was established in 1987 offering full scale remodeling and tile services. This business was built on honesty, integrity, and quality to all clients. Our reputation is based on superior quality at a competitive price and most importantly we listen to our customers. We serve Massachusetts. Please email or call rather than Message Center on Angie's List.

"Veglia Remodeling was wonderful to work with. Jeff gave me an estimate for the labor/work on my bathroom remodel. He also suggested vendors to work with and suggested meeting them to choose materials (which was the other cost of course). That was very helpful. Jeff was always available via text or phone. Mostly text. He was the point person if I had concerns. Always gracious. Happy to weigh in if I wasn't sure about something. He has a number of people who he works with and they were all very professional and everyone always cleaned up when they left for the day. I felt very fortunate to have Jeff commit to my project since my bathroom is extremely small (two people standing in it is a crowd) and it can be tough to find someone who will work on a small project."

SHERI R on July 2025

Jeff Veglia Remodeling was established in 1987 offering full scale remodeling and tile services. This business was built on honesty, integrity, and quality to all clients. Our reputation is based on superior quality at a competitive price and most importantly we listen to our customers. We serve Massachusetts. Please email or call rather than Message Center on Angie's List.

"Veglia Remodeling was wonderful to work with. Jeff gave me an estimate for the labor/work on my bathroom remodel. He also suggested vendors to work with and suggested meeting them to choose materials (which was the other cost of course). That was very helpful. Jeff was always available via text or phone. Mostly text. He was the point person if I had concerns. Always gracious. Happy to weigh in if I wasn't sure about something. He has a number of people who he works with and they were all very professional and everyone always cleaned up when they left for the day. I felt very fortunate to have Jeff commit to my project since my bathroom is extremely small (two people standing in it is a crowd) and it can be tough to find someone who will work on a small project."

SHERI R on July 2025


Avatar for Modern Energy

Modern Energy

5.00(
3
)
Approved Pro

Modern Energy

5.00(
3
)
Approved Pro
Customers say: Quick response
606 local quotes requested
8 years of experience

Modern Energy is a top rated Mass Save contractor that specializes in Whole Home Heat Pump installation for both residential and commercial customers. With deep roots in the energy efficiency world, we always make sure to install the most efficient, cost-effective products on the market. Plus - we have in house staff to help our customers handle the rebate and financing process!

"The guys at Modern Energy did an excellent job, Ryan was VERY responsive and got me the best deal possible. These past two summers showed how beneficial this type of system mini-splits are. Highly recommend!"

Michael T on September 2025

Modern Energy is a top rated Mass Save contractor that specializes in Whole Home Heat Pump installation for both residential and commercial customers. With deep roots in the energy efficiency world, we always make sure to install the most efficient, cost-effective products on the market. Plus - we have in house staff to help our customers handle the rebate and financing process!

"The guys at Modern Energy did an excellent job, Ryan was VERY responsive and got me the best deal possible. These past two summers showed how beneficial this type of system mini-splits are. Highly recommend!"

Michael T on September 2025


Avatar for Pioneer Basement

Pioneer Basement

4.69(
188
)
Approved Pro

Pioneer Basement

4.69(
188
)
Approved Pro
Customers say: Super punctual
88 local quotes requested
41 years of experience

Additional service area - Cohasset, Fitchburg, Worcester, portions of Chelsea-Saugus, Chelmsford Counties. South Shore & Cape Cod and All of Rhode Island. Family owned and operated since 1984. Additional email - [email protected]. Additional phone - (800) 439-0788. Additional DBA - Pioneer Basement Waterproofing Inc.

"Went well. pumps replaced"

Esther H on August 2022

Additional service area - Cohasset, Fitchburg, Worcester, portions of Chelsea-Saugus, Chelmsford Counties. South Shore & Cape Cod and All of Rhode Island. Family owned and operated since 1984. Additional email - [email protected]. Additional phone - (800) 439-0788. Additional DBA - Pioneer Basement Waterproofing Inc.

"Went well. pumps replaced"

Esther H on August 2022


Avatar for Endless Energy

Endless Energy

4.88(
16
)
Approved Pro

Endless Energy

4.88(
16
)
Approved Pro
Customers say: Quality work
322 local quotes requested
45 years of experience

Endless Energy is the #1 trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts. Specializing in Furnaces, Boilers, and Heat Pumps we have Master Plumbers, Electricians, and HVAC Technicians all under one roof reducing your need to find multiple contractors! We are also a Mass Save partner and can conduct your no cost Mass Save Home Energy Assessment and install any recommended insulation. We can help you with: *Heating Repairs, Installation, & Service *AC Repairs, Installation, & Service *Plumbing Repairs, Installation & Service *Water Heater Replacement & Service *Indoor Air Quality Solutions *Ductwork & Line Set Solutions *Electrical Panel Upgrades and Replacement *Insulation *No Cost Home Energy Assessments A Mass Save certified contractor with an A+BBB rating. All of our skilled technicians undergo an extensive background and drug screening prior to being hired to our team!

"Seamless. From the moment of making the appointment with the sales rep to come out to the follow-up phone call, I could not have asked for this installation to go better at a difficult time. They listened to my concerns regarding the look on the outside of the house and the location of units inside. They assisted with all aspects of the Mass Save program making the application process easy. They took care of actual submission of the paperwork where most companies wanted to provide the info to me to then submit."

Jonathan S on July 2020

Endless Energy is the #1 trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts. Specializing in Furnaces, Boilers, and Heat Pumps we have Master Plumbers, Electricians, and HVAC Technicians all under one roof reducing your need to find multiple contractors! We are also a Mass Save partner and can conduct your no cost Mass Save Home Energy Assessment and install any recommended insulation. We can help you with: *Heating Repairs, Installation, & Service *AC Repairs, Installation, & Service *Plumbing Repairs, Installation & Service *Water Heater Replacement & Service *Indoor Air Quality Solutions *Ductwork & Line Set Solutions *Electrical Panel Upgrades and Replacement *Insulation *No Cost Home Energy Assessments A Mass Save certified contractor with an A+BBB rating. All of our skilled technicians undergo an extensive background and drug screening prior to being hired to our team!

"Seamless. From the moment of making the appointment with the sales rep to come out to the follow-up phone call, I could not have asked for this installation to go better at a difficult time. They listened to my concerns regarding the look on the outside of the house and the location of units inside. They assisted with all aspects of the Mass Save program making the application process easy. They took care of actual submission of the paperwork where most companies wanted to provide the info to me to then submit."

Jonathan S on July 2020


Avatar for Master Bath Pros Inc

Master Bath Pros Inc

5.00(
1
)
Approved Pro

Master Bath Pros Inc

5.00(
1
)
Approved Pro
74 local quotes requested
2 years of experience

At Master Bath Pros, we pride ourselves on a decade-long journey of transforming bathrooms into spaces of comfort and elegance. Our team of experienced designers and builders work closely with you to bring your dream bathroom to life, ensuring a seamless process from design to execution. Our commitment to quality and customer satisfaction makes us a trusted name in bathroom remodeling. Master Bath Pros offers a comprehensive suite of bathroom remodeling services. From contemporary makeovers to classic renovations, we specialize in transforming your bathroom to reflect your unique style and meet your functional needs We offer bath & shower remodels, walk-in tubs, 1-day bathroom remodel, and more. Contact us for a quote!

At Master Bath Pros, we pride ourselves on a decade-long journey of transforming bathrooms into spaces of comfort and elegance. Our team of experienced designers and builders work closely with you to bring your dream bathroom to life, ensuring a seamless process from design to execution. Our commitment to quality and customer satisfaction makes us a trusted name in bathroom remodeling. Master Bath Pros offers a comprehensive suite of bathroom remodeling services. From contemporary makeovers to classic renovations, we specialize in transforming your bathroom to reflect your unique style and meet your functional needs We offer bath & shower remodels, walk-in tubs, 1-day bathroom remodel, and more. Contact us for a quote!


Avatar for Sheehan's Appliance Services

Sheehan's Appliance Services

4.85(
158
)
Approved Pro

Sheehan's Appliance Services

4.85(
158
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
104 local quotes requested

Sheehan's Repairs and Installs all major brand appliances from dryer vents, kitchen appliances, laundry installs and repairs, air conditioner removal and installation, flat screen install, and more! Located in Chelmsford MA. Please call my office at 978-256-2248 or my cell at 978-877-2181 to schedule. Pay by Check or cash

"Responded quickly to my repair request. Came over the next day and diagnosed the issue. Part was ordered and the offending switch was replaced 3 days later after the part arrived."

Robert A on June 2025

Sheehan's Repairs and Installs all major brand appliances from dryer vents, kitchen appliances, laundry installs and repairs, air conditioner removal and installation, flat screen install, and more! Located in Chelmsford MA. Please call my office at 978-256-2248 or my cell at 978-877-2181 to schedule. Pay by Check or cash

"Responded quickly to my repair request. Came over the next day and diagnosed the issue. Part was ordered and the offending switch was replaced 3 days later after the part arrived."

Robert A on June 2025

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Boiler Repair questions, answered by experts

Generally speaking, yes, turning one radiator off does save some money, especially if the system is a little older—so long as you’re not cranking up the dial on the ones you leave on. But some HVAC specialists argue that keeping your entire system on ensures that your boiler stays efficient. After all, it’s rated to fit your home and heats the amount of water your heating system needs. This could be the case if you have a new system. However, turning radiators off in unused rooms lowers the amount of hot water you need.

When it comes to bleeding a radiator, the goal is to let out trapped air rather than letting out the water. Naturally, some water will dribble out when you open the valve to let out the air. But you don’t want a lot of water to leak out. Just leave the valve open long enough that the hissing noise stops, meaning the air has escaped, and just a dribble of water comes out of the radiator.

It takes about five to 10 minutes for heat to reach a radiator, then about one hour until the radiator fully heats up a room. The exact duration depends on the size of the room and how far away the radiator is from the boiler heating system. Heating up an entire house could take up to two hours.

An expansion tank must always be installed on the supply side, which is the side where the boiler sends water out to heat the systems. That placement allows the water to push against the air and condense properly as it is heated, then circulated through the system. Professional installers can recommend the best place on the supply side for an expansion tank.

To bleed a radiator, first turn off the heat to the system. Then, lay a towel under the valve, open the bleed valve, wait 20 to 30 seconds for air to escape, and gently close the valve. You should repeat this process for every radiator you have in your home. Once your radiator valves have all been closed carefully, you can turn them back on.

The Chelmsford, MA homeowners’ guide to boiler repairs

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