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    Average homeowner rating
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    Verified boiler repairs reviews

Find Boiler repair pros in Mastic

Avatar for MSD Heating & Cooling

MSD Heating & Cooling

4.92(
60
)
Approved Pro

MSD Heating & Cooling

4.92(
60
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
224 local quotes requested

NOTE I M SORRY FOR ALL , WE NOT DOING ANY TYPE OF PLUMBING, WORK. OIL FURNACE,OIL BOILER , OIL HOT WATER HEATER, WE ARE DOING GAS FURNACE, AND HEAT PUMP SYSTEM HEATING AND AIR CONDITIONING.THAT'S ALL , WE DONT DO BASEBOARD, RADIANT,ANY OIL APPLIANCE OR PLUMBING WORK . THANKS FOR UNDERSTANDING. MSD Heating and Cooling is now offering free estimates for all AC replacements and new installations. We have been in the business for over 18 years and we've been lucky enough to learn a thing or two over those years. We've even worked hard to make sure that our staff knows the most up-to-date information about all of your heating and cooling needs. Keeping you cool and warm is our goal!

"Reasonable price great work friendly and very clean staff"

Huseyin A on May 2022

NOTE I M SORRY FOR ALL , WE NOT DOING ANY TYPE OF PLUMBING, WORK. OIL FURNACE,OIL BOILER , OIL HOT WATER HEATER, WE ARE DOING GAS FURNACE, AND HEAT PUMP SYSTEM HEATING AND AIR CONDITIONING.THAT'S ALL , WE DONT DO BASEBOARD, RADIANT,ANY OIL APPLIANCE OR PLUMBING WORK . THANKS FOR UNDERSTANDING. MSD Heating and Cooling is now offering free estimates for all AC replacements and new installations. We have been in the business for over 18 years and we've been lucky enough to learn a thing or two over those years. We've even worked hard to make sure that our staff knows the most up-to-date information about all of your heating and cooling needs. Keeping you cool and warm is our goal!

"Reasonable price great work friendly and very clean staff"

Huseyin A on May 2022


Avatar for Mayjac Plumbing, Inc.

Mayjac Plumbing, Inc.

4.92(
13
)
Approved Pro

Mayjac Plumbing, Inc.

4.92(
13
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

At MayJac Plumbing Inc. we're dedicated to providing our clients with the very best service, installation, and repairs for all phases of their plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail we put into each of the projects we're involved with. Our goal at MayJac is to maintain a relationship with every customer for life. MayJac Plumbing Inc. is fully licensed and insured. We have over 18 years of experience. Call us today at (631) 909-1829 to discuss your all plumbing needs!

"Joe was great."

Nicholas U on June 2024

At MayJac Plumbing Inc. we're dedicated to providing our clients with the very best service, installation, and repairs for all phases of their plumbing needs. We specialize in a variety of residential and commercial services and take pride in the attention to detail we put into each of the projects we're involved with. Our goal at MayJac is to maintain a relationship with every customer for life. MayJac Plumbing Inc. is fully licensed and insured. We have over 18 years of experience. Call us today at (631) 909-1829 to discuss your all plumbing needs!

"Joe was great."

Nicholas U on June 2024


Avatar for AAA Dependable Cesspool, Sewer & Drain Service, Inc.

AAA Dependable Cesspool, Sewer & Drain Service, Inc.

4.88(
267
)
Approved Pro

AAA Dependable Cesspool, Sewer & Drain Service, Inc.

4.88(
267
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
62 local quotes requested

We aren't just a Cesspool Company – We're your neighbors, and we’ve been proudly serving the Suffolk community for over 28 years. Being a Family owned company we understand how important it is to have a reliable team you can trust. From emergencies to routine maintenance we’ve got you. Our customers satisfaction is our number one priority, and we’re always here to help with honest, affordable service. We run frequent maintenance specials. As a special thank you, we offer discounts for Military, First Responders, and Seniors because we appreciate all that you do. Give us a call today – we’re ready to help!

"Melissa was wonderful to work with. Easy going,professional Made me feel comfortable. The prices are very good. Jeff who came to my home was again wonderful, very knowledgeable. Explained everything in detail. They are coming to do the work.thiscus someone yiu can trust to do the right job. Highly recommend them. "

Christine T on September 2025

We aren't just a Cesspool Company – We're your neighbors, and we’ve been proudly serving the Suffolk community for over 28 years. Being a Family owned company we understand how important it is to have a reliable team you can trust. From emergencies to routine maintenance we’ve got you. Our customers satisfaction is our number one priority, and we’re always here to help with honest, affordable service. We run frequent maintenance specials. As a special thank you, we offer discounts for Military, First Responders, and Seniors because we appreciate all that you do. Give us a call today – we’re ready to help!

"Melissa was wonderful to work with. Easy going,professional Made me feel comfortable. The prices are very good. Jeff who came to my home was again wonderful, very knowledgeable. Explained everything in detail. They are coming to do the work.thiscus someone yiu can trust to do the right job. Highly recommend them. "

Christine T on September 2025


Avatar for P.J. Fitzpatrick, LLC

P.J. Fitzpatrick, LLC

4.48(
432
)
Approved Pro

P.J. Fitzpatrick, LLC

4.48(
432
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
125 local quotes requested

Why? Quite simply, because we strive for perfection. If you are hoping we will use cheaper materials, hurry through an installation, or overlook restrictions, P.J. Fitzpatrick, LLC, is not the company for you. We believe that when it comes to your home, the job should be done perfectly and last a lifetime. This might not make us the cheapest company in the area, but we stand behind our work and leave our customers extremely satisfied. So much that they refer friends, family and neighbors without hesitation. If something goes wrong with our installation, it's not your fault, it's ours. Our responsibility doesn't end once we pack up our tools and leave. If something breaks, malfunctions, or just plain doesn't make you happy, we'll fix it - for as long as you live in your home. Full lifetime warranties are included with many of our services. We also have 18 Repair Experts who do repairs all day, every day and love it! Experience the P.J. Fitzpatrick, LLC., difference today!

"Very professional and curteous"

Wilbur B on February 2023

Why? Quite simply, because we strive for perfection. If you are hoping we will use cheaper materials, hurry through an installation, or overlook restrictions, P.J. Fitzpatrick, LLC, is not the company for you. We believe that when it comes to your home, the job should be done perfectly and last a lifetime. This might not make us the cheapest company in the area, but we stand behind our work and leave our customers extremely satisfied. So much that they refer friends, family and neighbors without hesitation. If something goes wrong with our installation, it's not your fault, it's ours. Our responsibility doesn't end once we pack up our tools and leave. If something breaks, malfunctions, or just plain doesn't make you happy, we'll fix it - for as long as you live in your home. Full lifetime warranties are included with many of our services. We also have 18 Repair Experts who do repairs all day, every day and love it! Experience the P.J. Fitzpatrick, LLC., difference today!

"Very professional and curteous"

Wilbur B on February 2023


Avatar for Allied Construction Corp

Allied Construction Corp

4.57(
141
)
Approved Pro

Allied Construction Corp

4.57(
141
)
Approved Pro
Customers say: True professional
43 local quotes requested
36 years of experience

**We are now specializing in Kitchen Remodeling**At this time we are unable to take on Bathroom Remodeling projects**Our first priority has always been the satisfaction of our customers, and we take great pride in both the quality of our work and the quality of the customer service we extend to each and every one of our clients, regardless of the size of their project. When trusting Allied Construction Corporation with your home remodeling project, you are trusting a crew of dedicated and talented home remodeling experts to take you through every single step of the process, and to keep you up to date on developments. We always treat your project – and your home – with the utmost level of care and respect. We strive to ensure that every last detail of your work order is performed with the same level of quality we would apply to our own home. Our work over the years has proven to yield exceptionally high return on investment, making your home not only the haven you envisioned but also more valuable. What is more, we provide extremely affordable home remodeling services, making it possible for you to see your vision come to life without breaking the bank. We also offer Angie's List members a 10% Discount on all Labor. We have been on the Discovery Channel. (References upon request). Additional Phone: 516-500-8170 Additional email: [email protected].

"RUN FAR AWAY FROM ALLIED AND TOM. Tom took my money and did not complete the renovations as per our contract. He lied about having a licensed electrician to do electrical work, it was just one of his workers who's not licensed. I paid for a dumpster and when it was delivered by tom it was already half full from another allied job and I was asked to pay the full amount of $950. Tom didn't listen to anything I said regarding the work I requested and he changed my design and did work that was cheaper for him. I was priced for one of my ceiling's to be ripped out and reinstalled with new sheetrock, Tom waited until I was away on business then he installed sheetrock on top of the bad sheetrock and told me he ripped out the old sheetrock and installed the new sheetrock, I found out when my EC cut holes to install lights and we found 2 layers of sheetrock preventing the lights from being able to be installed. Allied construction is a cheap, sneaky company who will steal your money and breach your contract. Do not hire these people Tom is a lair. Tom wore a gun in my house on his hip and told me "I use this to get paid by customer who don't want to pay". Tom left live 120v wires hanging out of the walls and ceiling, he removed a banister and didn't replace it for 3 weeks making my home very unsafe for me and my 9 year old son."

Adam C on May 2025

**We are now specializing in Kitchen Remodeling**At this time we are unable to take on Bathroom Remodeling projects**Our first priority has always been the satisfaction of our customers, and we take great pride in both the quality of our work and the quality of the customer service we extend to each and every one of our clients, regardless of the size of their project. When trusting Allied Construction Corporation with your home remodeling project, you are trusting a crew of dedicated and talented home remodeling experts to take you through every single step of the process, and to keep you up to date on developments. We always treat your project – and your home – with the utmost level of care and respect. We strive to ensure that every last detail of your work order is performed with the same level of quality we would apply to our own home. Our work over the years has proven to yield exceptionally high return on investment, making your home not only the haven you envisioned but also more valuable. What is more, we provide extremely affordable home remodeling services, making it possible for you to see your vision come to life without breaking the bank. We also offer Angie's List members a 10% Discount on all Labor. We have been on the Discovery Channel. (References upon request). Additional Phone: 516-500-8170 Additional email: [email protected].

"RUN FAR AWAY FROM ALLIED AND TOM. Tom took my money and did not complete the renovations as per our contract. He lied about having a licensed electrician to do electrical work, it was just one of his workers who's not licensed. I paid for a dumpster and when it was delivered by tom it was already half full from another allied job and I was asked to pay the full amount of $950. Tom didn't listen to anything I said regarding the work I requested and he changed my design and did work that was cheaper for him. I was priced for one of my ceiling's to be ripped out and reinstalled with new sheetrock, Tom waited until I was away on business then he installed sheetrock on top of the bad sheetrock and told me he ripped out the old sheetrock and installed the new sheetrock, I found out when my EC cut holes to install lights and we found 2 layers of sheetrock preventing the lights from being able to be installed. Allied construction is a cheap, sneaky company who will steal your money and breach your contract. Do not hire these people Tom is a lair. Tom wore a gun in my house on his hip and told me "I use this to get paid by customer who don't want to pay". Tom left live 120v wires hanging out of the walls and ceiling, he removed a banister and didn't replace it for 3 weeks making my home very unsafe for me and my 9 year old son."

Adam C on May 2025


"They were on time, very efficient and did the work as expected "

Robert B on November 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade, and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business.

"They were on time, very efficient and did the work as expected "

Robert B on November 2025


MGT Construction, Corp.

4.21(
14
)
Approved Pro

MGT Construction, Corp.

4.21(
14
)
Approved Pro
Customers say: Quality work
86 local quotes requested

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"They did an awesome job. They were very professional. They were also very respectful. They respected our needs since my husband is already retired. Steve the project manager he was great along with his crew. They kept us in the loop of the progress on the project."

Joseph C on October 2025

We specialize in all phases of remodeling for your home, business, bathrooms, kitchens, finishing basements, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"They did an awesome job. They were very professional. They were also very respectful. They respected our needs since my husband is already retired. Steve the project manager he was great along with his crew. They kept us in the loop of the progress on the project."

Joseph C on October 2025


Mr. Flushington

4.70(
10
)
Approved Pro

Mr. Flushington

4.70(
10
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
30 local quotes requested

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"Can't say enough good things about Nick. Fast communication, professional, friendly, honest advice (pointed out a few things while he was there, not upselling, just letting us know about potential future issues). Reasonable prices (more of a rarity these days). HIGHLY RECOMMEND!!!"

Edward H on February 2025

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"Can't say enough good things about Nick. Fast communication, professional, friendly, honest advice (pointed out a few things while he was there, not upselling, just letting us know about potential future issues). Reasonable prices (more of a rarity these days). HIGHLY RECOMMEND!!!"

Edward H on February 2025


Avatar for JBL HOME IMPROVEMENTS INC

JBL HOME IMPROVEMENTS INC

4.92(
225
)
Approved Pro

JBL HOME IMPROVEMENTS INC

4.92(
225
)
Approved Pro
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
132 local quotes requested

JBL Home Improvements, Inc, located in St. James, is a family owned and operated remodeling business specializing in residential projects. Owner & Contractor David Kaplan, General Manager Jill Kaplan, along with their team of talented professionals, are dedicated to providing outstanding workmanship and customer service to homeowners who live in their community.

"Extremely pleased with the recommended supplies and workmanship."

Noreen C on September 2025

JBL Home Improvements, Inc, located in St. James, is a family owned and operated remodeling business specializing in residential projects. Owner & Contractor David Kaplan, General Manager Jill Kaplan, along with their team of talented professionals, are dedicated to providing outstanding workmanship and customer service to homeowners who live in their community.

"Extremely pleased with the recommended supplies and workmanship."

Noreen C on September 2025


"Jorge has basically remodeled our entire house. Jorge and his crew were very neat, professional from start to finish. Jorge was instrumental in helping to bring our vision to fruition. Once a project was started Jorge and his crew were here until the job was completed to our satisfaction. Pricing was fair and reasonable, I would highly recommend Jorge construction Corp. to anyone looking to remodel."

Kelly G on November 2025

Jorge General Construction Corp is proud remodeling kitchen & bathroom etc,with 17 years experience,contact us today to schedule and keep your home in top condition year-round.

"Jorge has basically remodeled our entire house. Jorge and his crew were very neat, professional from start to finish. Jorge was instrumental in helping to bring our vision to fruition. Once a project was started Jorge and his crew were here until the job was completed to our satisfaction. Pricing was fair and reasonable, I would highly recommend Jorge construction Corp. to anyone looking to remodel."

Kelly G on November 2025

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Boiler Repair questions, answered by experts

The best way to save money on HVAC repairs is by regularly having your system inspected and maintained. This can prevent bigger problems and costly repairs and replacements in the future. It’s also smart to buy quality equipment and hire companies that provide warranties on equipment and labor. If you need repairs, you may be able to save money by cashing in on rebates and incentives or keeping the area around your HVAC unit clear to shorten the time your contractor needs to spend in your home.

The main difference between an outdoor wood furnace versus an outdoor wood boiler is what each appliance is heating. An outdoor wood furnace burns wood to create heat, which warms the air and moves it through the ducts in your home. An outdoor wood boiler uses the heat from burning wood to warm water, which goes through pipes to radiators in the home.

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.

The best time to buy home heating oil is in the summer when the demand is lowest, as the prices are usually lower. However, waiting until the summer to buy is often unavoidable unless you install a separate storage tank. If you have the space for a second tank, you can expect to pay between $1,000 and $4,000 for the oil tank replacement or installation, depending on the capacity and location. You could quickly recuperate these costs, though, by stocking up on heating oil in the summer and avoiding deliveries in the winter when prices are highest.

To maintain a boiler and ensure it works optimally, regularly read the temperature and pressure gauges on the unit to ensure they're within the limits described in your owner's manual. Lubricate the circulating pump according to the manufacturer's instructions. Check the water level in the expansion tank and open the tank valve to drain it if it's more than half full.

The Mastic, NY homeowners’ guide to boiler repairs

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