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    Average homeowner rating
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    Verified boiler repairs reviews

Find Boiler repair pros in Derwood

Avatar for West Shore Home Baltimore

West Shore Home Baltimore

4.94(
364
)
Approved Pro

West Shore Home Baltimore

4.94(
364
)
Approved Pro
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
2006 years of experience

To accomplish our mission, we have implemented a simple approach that will restore the beauty of your home while significantly reducing your energy bills - and we get it done in just one day! From start to finish, the West Shore Window & Door, Inc., experience is engineered to bring happiness to every home. The health and safety of our customers and employees is a top priority. Our team is following all CDC guidelines so we can provide you with the fast and convenient home improvements. We are also offering free virtual design consultations! Schedule your free consultation today.

"Excellent customer service. Excellent finished product. West Shore Home came to install a shower in one bathroom and bathtub/shower in another bathroom. Their customer service is top tier! They took extra caution to ensure they didn’t damage or disrupt my home or other furniture as they carried their equipment in and out of the house. They encouraged me to see the progress as they worked. (Nothing to hide is always a good thing.) When I expressed surprise and disappointment with one aspect of the design, they immediately began solutioning the issue."

Isiah T on January 2025

To accomplish our mission, we have implemented a simple approach that will restore the beauty of your home while significantly reducing your energy bills - and we get it done in just one day! From start to finish, the West Shore Window & Door, Inc., experience is engineered to bring happiness to every home. The health and safety of our customers and employees is a top priority. Our team is following all CDC guidelines so we can provide you with the fast and convenient home improvements. We are also offering free virtual design consultations! Schedule your free consultation today.

"Excellent customer service. Excellent finished product. West Shore Home came to install a shower in one bathroom and bathtub/shower in another bathroom. Their customer service is top tier! They took extra caution to ensure they didn’t damage or disrupt my home or other furniture as they carried their equipment in and out of the house. They encouraged me to see the progress as they worked. (Nothing to hide is always a good thing.) When I expressed surprise and disappointment with one aspect of the design, they immediately began solutioning the issue."

Isiah T on January 2025


Suma Plumbing and Drain Cleaning, LLC

4.89(
590
)
Approved Pro

Suma Plumbing and Drain Cleaning, LLC

4.89(
590
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
2003 years of experience

Finding the right plumbing company can be a struggle sometimes. Suma Plumbing and Drain Cleaning offers quick, reliable service you can trust. We are dedicated to helping you when you need it the most and we leave all of our jobs tidy and clean.

"The technician was lovely. I was so stressed about this issue and how long it would take and when it would get done. Lian was prompt, arrived earlier than expected, and got right to work. He explained everything and reassured me about the issue. Got everything done the same day within a couple of hours tops. Thank you so much for being kind and professional and resolving this issue quickly for me. "

Lessie M on September 2025

Finding the right plumbing company can be a struggle sometimes. Suma Plumbing and Drain Cleaning offers quick, reliable service you can trust. We are dedicated to helping you when you need it the most and we leave all of our jobs tidy and clean.

"The technician was lovely. I was so stressed about this issue and how long it would take and when it would get done. Lian was prompt, arrived earlier than expected, and got right to work. He explained everything and reassured me about the issue. Got everything done the same day within a couple of hours tops. Thank you so much for being kind and professional and resolving this issue quickly for me. "

Lessie M on September 2025


Drain Pro Services

4.95(
205
)
Approved Pro

Drain Pro Services

4.95(
205
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
1995 years of experience

Drain Pro Services is 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.

"Patrick was professional from the time I reached out up until his arrival at my home. I explained that the control valve from my sump pump seemed to be malfunctioning over the phone, and within a couple of minutes of being on site and verifying the issue, he got to work. About an hour later, he had the part replaced and my sump pump functioning normally and much more quieter than it had been prior. He even cleaned out the basin the pump was sitting in and disposed of the yard debris that crept in. The homeowner and plumbing wisdom that he bestowed on our household was elite as well. Patrick is "our guy"! Thanks Patrick!"

Chris R on August 2024

Drain Pro Services is 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.

"Patrick was professional from the time I reached out up until his arrival at my home. I explained that the control valve from my sump pump seemed to be malfunctioning over the phone, and within a couple of minutes of being on site and verifying the issue, he got to work. About an hour later, he had the part replaced and my sump pump functioning normally and much more quieter than it had been prior. He even cleaned out the basin the pump was sitting in and disposed of the yard debris that crept in. The homeowner and plumbing wisdom that he bestowed on our household was elite as well. Patrick is "our guy"! Thanks Patrick!"

Chris R on August 2024


Avatar for LFC Services Home Repair Division

LFC Services Home Repair Division

4.96(
101
)
Approved Pro

LFC Services Home Repair Division

4.96(
101
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 99% of Angi customers
Recommended by 99% of HomeAdvisor customers
2014 years of experience

LFC is a family oriented company whose team is actually made up of family and friends who have over 75 combined years of experience in the remodeling and home repair industry. We love working together, we love remodeling and we love helping people. Our goal is to provide quality service at affordable prices for all of our clients. We understand that your house is your home, that is why we make every effort to protect your home during the repair and renovation process. All our of Home Repair Specialists use drop cloths and plastic covering whenever necessary to keep your home safe and dust free. We also do a thorough clean up after every project. The only evidence that we like to leave behind is a job well done and a satisfied client.

"LFC did a excellent job remodeling my master bathroom. Tony was very patient during our initial consultation and took detailed notes as I described my vision to him. We turned an outdated bathroom into a beautiful spa-like masterpiece. I surrendered a spacious linen closet in the space to get double sinks. We updated the plumbing, floors and cabinetry; added much needed lighting to brighten up the space and found ways to implement space saving features/fixtures for a more efficient use of square footage - the pocket door was a hit. I initially wanted a barn door- I'm so glad Tony convinced me to go with the pocket door. Tony Heard and his team (Omar, Jose, Douglas and Uncle Merc) are true professionals. I especially appreciated the respect and care they took in planning for the project (pre-construction walkthrough, prepping the worksite, daily clean-up, printed schedules, constant communication- and yes he answers email and phone calls) Not only did we (my husband) enjoy having them in our home, our fur-baby terrier enjoyed the daily belly rubs. You won't be disappointed, we have several other projects waiting for Tony and his team."

Myra T on March 2021

LFC is a family oriented company whose team is actually made up of family and friends who have over 75 combined years of experience in the remodeling and home repair industry. We love working together, we love remodeling and we love helping people. Our goal is to provide quality service at affordable prices for all of our clients. We understand that your house is your home, that is why we make every effort to protect your home during the repair and renovation process. All our of Home Repair Specialists use drop cloths and plastic covering whenever necessary to keep your home safe and dust free. We also do a thorough clean up after every project. The only evidence that we like to leave behind is a job well done and a satisfied client.

"LFC did a excellent job remodeling my master bathroom. Tony was very patient during our initial consultation and took detailed notes as I described my vision to him. We turned an outdated bathroom into a beautiful spa-like masterpiece. I surrendered a spacious linen closet in the space to get double sinks. We updated the plumbing, floors and cabinetry; added much needed lighting to brighten up the space and found ways to implement space saving features/fixtures for a more efficient use of square footage - the pocket door was a hit. I initially wanted a barn door- I'm so glad Tony convinced me to go with the pocket door. Tony Heard and his team (Omar, Jose, Douglas and Uncle Merc) are true professionals. I especially appreciated the respect and care they took in planning for the project (pre-construction walkthrough, prepping the worksite, daily clean-up, printed schedules, constant communication- and yes he answers email and phone calls) Not only did we (my husband) enjoy having them in our home, our fur-baby terrier enjoyed the daily belly rubs. You won't be disappointed, we have several other projects waiting for Tony and his team."

Myra T on March 2021


Avatar for Pipeworks Plumbing, Heating, and Air

Pipeworks Plumbing, Heating, and Air

4.88(
580
)
Approved Pro

Pipeworks Plumbing, Heating, and Air

4.88(
580
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
2016 years of experience

Pipeworks Plumbing and Services, is a rapidly growing and local Heating, Air Conditioning, and Plumbing company with a focus on residential and light commercial needs. In fact, we are more than just an HVAC company - "we are in the people business servicing Heating and Air Conditioning needs". We work hard to build trust and maintain an exceptional experience for our customers building life-long relationships one day, one customer at a time.

"Chase did a great job repairing a failed pipe that splashed water into our home. He carefully examined every aspect of the problem, determined what needed to be done, fixed the problem and tested the pipes to make sure everything worked -- and all of this at a very reasonable price. We've been using PipeWorks for several years to deal with plumbing issues and they've provided great service at reasonable rates. We'll continue to contact them when we have a plumbing problem."

Bill W on May 2025

Pipeworks Plumbing and Services, is a rapidly growing and local Heating, Air Conditioning, and Plumbing company with a focus on residential and light commercial needs. In fact, we are more than just an HVAC company - "we are in the people business servicing Heating and Air Conditioning needs". We work hard to build trust and maintain an exceptional experience for our customers building life-long relationships one day, one customer at a time.

"Chase did a great job repairing a failed pipe that splashed water into our home. He carefully examined every aspect of the problem, determined what needed to be done, fixed the problem and tested the pipes to make sure everything worked -- and all of this at a very reasonable price. We've been using PipeWorks for several years to deal with plumbing issues and they've provided great service at reasonable rates. We'll continue to contact them when we have a plumbing problem."

Bill W on May 2025


Joseph plumbing & drain

4.91(
129
)
Approved Pro

Joseph plumbing & drain

4.91(
129
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
2018 years of experience

Joseph Plumbing & Drain, LLC is College Park's premier plumbing company. Call us for all of your plumbing needs. With 15 years experience we aim to not only meet but exceed your expectations. Call us today and see why your neighbors use Joseph Plumbing & Drain, LLC! Master License 72767

"Arrived promptly and completed the job quickly and efficiently with no problems! Great job!"

Christopher K on October 2025

Joseph Plumbing & Drain, LLC is College Park's premier plumbing company. Call us for all of your plumbing needs. With 15 years experience we aim to not only meet but exceed your expectations. Call us today and see why your neighbors use Joseph Plumbing & Drain, LLC! Master License 72767

"Arrived promptly and completed the job quickly and efficiently with no problems! Great job!"

Christopher K on October 2025


Avatar for DMV Kitchen & Bath Inc

DMV Kitchen & Bath Inc

4.83(
304
)
Approved Pro

DMV Kitchen & Bath Inc

4.83(
304
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
2010 years of experience

DMV Kitchen and Bath Inc is a family owned and operated Full Service General Contractor specializing in Kitchen & Bathroom Remodeling and Design/Build Services. We ensure a high quality finished product with flexible and attentive service at a competitive price. We pride ourselves on having the ability to make our clients visions come to life with great design ideas and execution. Showrooms: Chantilly, (VA) (703) 657-0997 and Gaithersburg, (MD)

"DMV has been excellent in kitchen and bath remodeling. They did a wonderful job renovating our two baths and kitchen in 2014. Their customer care and pricing is commendable. More recently in 2024 we had more remodeling tasks done by DMV under excellent supervision of Jordi. Even now when we need some minor improvements needed Jordi is very helpful to find time to get it done. We strongly recommend DMV for kitchen and bath remodeling .They are excellent under the management of Javier, and exceptional onsite supervision by Jordi!"

Nat M on October 2025

DMV Kitchen and Bath Inc is a family owned and operated Full Service General Contractor specializing in Kitchen & Bathroom Remodeling and Design/Build Services. We ensure a high quality finished product with flexible and attentive service at a competitive price. We pride ourselves on having the ability to make our clients visions come to life with great design ideas and execution. Showrooms: Chantilly, (VA) (703) 657-0997 and Gaithersburg, (MD)

"DMV has been excellent in kitchen and bath remodeling. They did a wonderful job renovating our two baths and kitchen in 2014. Their customer care and pricing is commendable. More recently in 2024 we had more remodeling tasks done by DMV under excellent supervision of Jordi. Even now when we need some minor improvements needed Jordi is very helpful to find time to get it done. We strongly recommend DMV for kitchen and bath remodeling .They are excellent under the management of Javier, and exceptional onsite supervision by Jordi!"

Nat M on October 2025


Avatar for Arms Home Improvement

Arms Home Improvement

5.00(
43
)
Approved Pro

Arms Home Improvement

5.00(
43
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2013 years of experience

ARM’s Home Improvement has been in business since 2013. After 26 years of working for the same home improvement/construction company, working his way to Vice President, Allen Metcalf, 4th generation carpenter, started Arm’s Home Improvement Company. At ARM's Home Improvement, we believe in providing the highest quality work, timeliness, clear communication throughout the entire process and client satisfaction. We specialize in residential construction, such as kitchen and bathroom remodeling. We can help you conceptualize your visions and turn them into reality. Please contact us today to schedule your free in-home estimate! We can show you 3D walk-through of your kitchen, bath or basement remodel. We are also a LEAD SAFE RENOVATOR. See more pictures and visit us on our Facebook page https://www.facebook.com/ArmsHomeImprovement/

"Allen is an excellent carpenter; we had the banister & railing updated; along with the stair threads. We also had the risers reinforced. Hands down, very happy with Allen & his services. My neighbors were so impressed; they also hired him."

Eric l on October 2025

ARM’s Home Improvement has been in business since 2013. After 26 years of working for the same home improvement/construction company, working his way to Vice President, Allen Metcalf, 4th generation carpenter, started Arm’s Home Improvement Company. At ARM's Home Improvement, we believe in providing the highest quality work, timeliness, clear communication throughout the entire process and client satisfaction. We specialize in residential construction, such as kitchen and bathroom remodeling. We can help you conceptualize your visions and turn them into reality. Please contact us today to schedule your free in-home estimate! We can show you 3D walk-through of your kitchen, bath or basement remodel. We are also a LEAD SAFE RENOVATOR. See more pictures and visit us on our Facebook page https://www.facebook.com/ArmsHomeImprovement/

"Allen is an excellent carpenter; we had the banister & railing updated; along with the stair threads. We also had the risers reinforced. Hands down, very happy with Allen & his services. My neighbors were so impressed; they also hired him."

Eric l on October 2025


Avatar for GAC Services

GAC Services

4.86(
268
)
Approved Pro

GAC Services

4.86(
268
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
1970 years of experience

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak K on February 2025

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak K on February 2025


Avatar for Remedy Plumbing & Drain Cleaning, LLC

Remedy Plumbing & Drain Cleaning, LLC

4.79(
681
)
Approved Pro

Remedy Plumbing & Drain Cleaning, LLC

4.79(
681
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
2017 years of experience

We value honesty and integrity in all aspects of our business. With over 10 years of plumbing and drain cleaning experience, we pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction.

"Price was high, especially for being there for less than 10 minutes. He also came 1 hours before agreed upon time. Job was completed, so in all it was done fine."

E L on October 2025

We value honesty and integrity in all aspects of our business. With over 10 years of plumbing and drain cleaning experience, we pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction.

"Price was high, especially for being there for less than 10 minutes. He also came 1 hours before agreed upon time. Job was completed, so in all it was done fine."

E L on October 2025

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Boiler Repair questions, answered by experts

If you go to turn it counterclockwise and it won’t turn anymore, it’s open. Like most other valves, you should be able to turn a radiator valve counterclockwise (to the left) to open it and clockwise (right) to close it. To close a radiator valve, turn it clockwise until you meet some resistance and can’t turn anymore, but do so carefully to avoid breaking the valve.

Most HVAC service calls include diagnostic fees, which could include checking on a specific issue you’re experiencing or running through a routine inspection checklist. If you called for a particular problem, the service call will also include an estimate to fix the issue, including materials and labor. Depending on your HVAC technician and the service you requested, you might also get a general inspection of your system components to ensure everything is working as intended.

A poorly maintained boiler can lead to serious issues like deadly carbon monoxide poisoning, so schedule regular maintenance services. Of course, it’s also a good idea to check your carbon monoxide detectors in your home to make sure they’re working properly. Moreover, when you forget to maintain your boiler, small problems can lead to something much more serious, which will cost you more money in the long run. Repairs average around $400, while a full replacement can total over $6,000.

Once you install your boiler, you can expect it to last for at least 10 to 15 years. Maximize the lifespan of your boiler by choosing a quality boiler, installing it properly, and having it professionally maintained each year. In the event that your boiler does need repair, address any issues immediately.

If you have a closed-system boiler that needs an expansion tank to work, you cannot run your boiler without it (not without the risk of extensive damage and even explosions). Your options include moving the boiler to another spot, rerouting boiler piping to a more open area, or completing a remodel around the boiler to create more space for the tank.

The Derwood, MD homeowners’ guide to boiler repairs

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