Get matched with top boiler repair pros in Mount Sinai, NY
There are 51 highly-rated local boiler repair pros.
TRUSTED BY MOUNT SINAI, NY HOMEOWNERS
4.5 
1.2k+ Verified Reviews for Boiler Repair pros in Mount Sinai, NY
*The Angi rating for Boiler Repair companies in Mount Sinai, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Repair needs.
*The HomeAdvisor rating for Boiler Repair companies in Mount Sinai, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Repair needs.
Last update on June 19, 2025
Boiler repair pros in Mount Sinai
Since 1999, woman-owned and operated Triple H Insulation has been providing Long Island customers with the most comprehensive home evaluation services with the utmost integrity and professionalism. We specialize in all aspects of Insulation and Air Sealing, including open and closed-cell Spray Foam, blown in and dense-packed cellulose, crawl space encapsulation and dehumidification. We can perform a free evaluation of your home from your basement or crawlspace to your attic. As a woman-owned company, we are committed to treating everyone with equal respect and focus on direct communication with all the household decision makers so each person is engaged in the process. Our skilled comfort consultants use building science principles to help our clients reduce energy costs and improve their homes' comfort. We hold a Gold Star designation from the Building Performance Institute (BPI.org) and our staff is Gold Star BPI certified. Triple H has Home Improvement Licenses in Suffolk, Nassau and NYC. See our great before and after photos on triplehcontracting.com.
"They are supposed to come tomorrow, they agreed on that. They called and told me that the job is too small and they refused to do the job. Meanwhile I described the job to the woman, the dimensions and the specifics and she agreed but still cancelled it."
Benny C on December 2021
Since 1999, woman-owned and operated Triple H Insulation has been providing Long Island customers with the most comprehensive home evaluation services with the utmost integrity and professionalism. We specialize in all aspects of Insulation and Air Sealing, including open and closed-cell Spray Foam, blown in and dense-packed cellulose, crawl space encapsulation and dehumidification. We can perform a free evaluation of your home from your basement or crawlspace to your attic. As a woman-owned company, we are committed to treating everyone with equal respect and focus on direct communication with all the household decision makers so each person is engaged in the process. Our skilled comfort consultants use building science principles to help our clients reduce energy costs and improve their homes' comfort. We hold a Gold Star designation from the Building Performance Institute (BPI.org) and our staff is Gold Star BPI certified. Triple H has Home Improvement Licenses in Suffolk, Nassau and NYC. See our great before and after photos on triplehcontracting.com.
"They are supposed to come tomorrow, they agreed on that. They called and told me that the job is too small and they refused to do the job. Meanwhile I described the job to the woman, the dimensions and the specifics and she agreed but still cancelled it."
Benny C on December 2021
Please consider us for any of your cesspool or drain issues. Make sure to save our number our coupon never expires! Check us out on Instagram for specials, discounts and additional ⭐️⭐️⭐️⭐️⭐️ reviews @thehonestcesspoolco
"It went very well it was quick and efficient! We will use in the future & definitely recommend!"
Morgan S on June 2025
Please consider us for any of your cesspool or drain issues. Make sure to save our number our coupon never expires! Check us out on Instagram for specials, discounts and additional ⭐️⭐️⭐️⭐️⭐️ reviews @thehonestcesspoolco
"It went very well it was quick and efficient! We will use in the future & definitely recommend!"
Morgan S on June 2025
With over 15 years of experience, cs mechanical, Inc. is your trusted partner for all your plumbing and home improvements needs -Pipe repairs -New installation -Water Heaters -shower body’s -faucet and sink repair -Toliet install - wash machine install - dishwasher install
"Chris did a great job. He was polite, organized and explained everything he was doing. I would recommend him for your plumbing needs."
Michael P on June 2025
With over 15 years of experience, cs mechanical, Inc. is your trusted partner for all your plumbing and home improvements needs -Pipe repairs -New installation -Water Heaters -shower body’s -faucet and sink repair -Toliet install - wash machine install - dishwasher install
"Chris did a great job. He was polite, organized and explained everything he was doing. I would recommend him for your plumbing needs."
Michael P on June 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
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
Herber Plumbing & Heating Corp. has been trusted and recommended since 1971, and recognized for our superb service. We are family owned and operated, with guaranteed great service. Our company specializes in all types of work, but especially: Plumbing, Gas Heating, Drain Cleaning, Oil to Gas Conversions, NYS RPZ Testing to name a few things. Call & schedule your appointment today! 631-666-9315
"Didn't show up on day scheduled, failed to call. Replaced ~$100 part in about a half hour. Charge was $595"
Bruce M on April 2025
Herber Plumbing & Heating Corp. has been trusted and recommended since 1971, and recognized for our superb service. We are family owned and operated, with guaranteed great service. Our company specializes in all types of work, but especially: Plumbing, Gas Heating, Drain Cleaning, Oil to Gas Conversions, NYS RPZ Testing to name a few things. Call & schedule your appointment today! 631-666-9315
"Didn't show up on day scheduled, failed to call. Replaced ~$100 part in about a half hour. Charge was $595"
Bruce M on April 2025
Practice makes perfect, and Varsity has been at it for over half a century! What began with a Navy veteran’s simple dream — to teach the value of honest, hands-on work to his children — has grown into one of Long Island’s most trusted resource for plumbing, heating and air conditioning services. Varsity’s mission has always been clear: to serve our neighbors with integrity, solve home service challenges with innovative solutions, and provide lasting results. Our dedicated crew is background-checked, rigorously trained in the latest technology, and excited to exceed your expectations. Above all Varsity is here to EARN your trust—not just for today, but for years to come. Let’s tackle your home service needs with the quality and care you deserve!
"They’re always so knowledgeable and professional. Worth the money."
Magnolia G on June 2025
Practice makes perfect, and Varsity has been at it for over half a century! What began with a Navy veteran’s simple dream — to teach the value of honest, hands-on work to his children — has grown into one of Long Island’s most trusted resource for plumbing, heating and air conditioning services. Varsity’s mission has always been clear: to serve our neighbors with integrity, solve home service challenges with innovative solutions, and provide lasting results. Our dedicated crew is background-checked, rigorously trained in the latest technology, and excited to exceed your expectations. Above all Varsity is here to EARN your trust—not just for today, but for years to come. Let’s tackle your home service needs with the quality and care you deserve!
"They’re always so knowledgeable and professional. Worth the money."
Magnolia G on June 2025
Cesspools R Us, led by owner Janet Russo, is a family-owned and operated business proudly serving Lindenhurst, NY, and the surrounding areas. Specializing in all aspects of septic work, Cesspools R Us offers comprehensive solutions for both cesspool and septic systems, as well as sewer and drain cleaning services. With a deep understanding of the unique septic needs in this area, our team is dedicated to delivering quality installations, services, and maintenance for residential and commercial systems. As a full-service cesspool, sewer, and drain company, Cesspools R Us holds certification from the New York State Department of Environmental Conservation, ensuring trusted expertise and commitment to environmental standards. From new installations to routine cleanings and emergency repairs, we are here to keep your septic systems functioning optimally. Reach out to us at 631-873-6162 for reliable, professional service you can count on.
"Frank was very knowledgeable, friendly, and fixed our clog in no time. Prompt service, and on time. Will definitely hire again if needed."
Alicia i on January 2025
Cesspools R Us, led by owner Janet Russo, is a family-owned and operated business proudly serving Lindenhurst, NY, and the surrounding areas. Specializing in all aspects of septic work, Cesspools R Us offers comprehensive solutions for both cesspool and septic systems, as well as sewer and drain cleaning services. With a deep understanding of the unique septic needs in this area, our team is dedicated to delivering quality installations, services, and maintenance for residential and commercial systems. As a full-service cesspool, sewer, and drain company, Cesspools R Us holds certification from the New York State Department of Environmental Conservation, ensuring trusted expertise and commitment to environmental standards. From new installations to routine cleanings and emergency repairs, we are here to keep your septic systems functioning optimally. Reach out to us at 631-873-6162 for reliable, professional service you can count on.
"Frank was very knowledgeable, friendly, and fixed our clog in no time. Prompt service, and on time. Will definitely hire again if needed."
Alicia i on January 2025
Full service plumbing company doing new construction and home service including 24/7 emergency service. No hot water at 1am? Call us. No heat at 3am? Call us. Clogged toilet on a Sunday? Call us. Frozen pipe in a blizzard? Call us. Flooded house? Call us. Slab leak? Call us. "A hot shower no matter the hour" we love to say! All of our work is warrantied for 1 year (with longer warranties available) which includes bot only the work but the parts and material as well. We wear booties and/or remove shoes in your home, always! Call us for all of your plumbing problems if you want somebody that you can trust and can ask hundreds of questions without an impatient technician losing his cool. Because we are there to HELP and we are at your service!
"Process was easy and professional was knowledgeable and very nice. Would definitely hire again."
Marie R on May 2025
Full service plumbing company doing new construction and home service including 24/7 emergency service. No hot water at 1am? Call us. No heat at 3am? Call us. Clogged toilet on a Sunday? Call us. Frozen pipe in a blizzard? Call us. Flooded house? Call us. Slab leak? Call us. "A hot shower no matter the hour" we love to say! All of our work is warrantied for 1 year (with longer warranties available) which includes bot only the work but the parts and material as well. We wear booties and/or remove shoes in your home, always! Call us for all of your plumbing problems if you want somebody that you can trust and can ask hundreds of questions without an impatient technician losing his cool. Because we are there to HELP and we are at your service!
"Process was easy and professional was knowledgeable and very nice. Would definitely hire again."
Marie R on May 2025
All Weather Heating & Cooling has been serving Nassau & Suffolk County of Long Island since 1969. We are now celebrating 54 years of exceeding customer expectations. All Weather provides sales, installation, service and maintenance of residential and commercial heating, air conditioning & water filtration systems.
"They installed a minisplit cooling system, with 3 exchanges June 2021. Since then it is not operating the way it should. In my bedroom with the door closed at night on cool at 70 degrees the humidity goes up to 80%. I wake up uncomfortable, change it from cool to dry mode. The humidity will go down into the 50% range but the temperature drops down to 62 or less! So in cool or dry mode I can't get a good nights sleep! They come and look at it and tell me everything is fine. I'm going to buy a window air conditioner tomorrow which seems insane because i spent $10,000 on this minisplit AC system!"
JIM G on June 2023
All Weather Heating & Cooling has been serving Nassau & Suffolk County of Long Island since 1969. We are now celebrating 54 years of exceeding customer expectations. All Weather provides sales, installation, service and maintenance of residential and commercial heating, air conditioning & water filtration systems.
"They installed a minisplit cooling system, with 3 exchanges June 2021. Since then it is not operating the way it should. In my bedroom with the door closed at night on cool at 70 degrees the humidity goes up to 80%. I wake up uncomfortable, change it from cool to dry mode. The humidity will go down into the 50% range but the temperature drops down to 62 or less! So in cool or dry mode I can't get a good nights sleep! They come and look at it and tell me everything is fine. I'm going to buy a window air conditioner tomorrow which seems insane because i spent $10,000 on this minisplit AC system!"
JIM G on June 2023
Heating and A/C business is locally owned and operated. We feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today! 631-652-8910
"Really happy with the work performed. Great communication, they arrived when they said they would, and quickly and successfully repaired the issue!"
Steven G on June 2024
Heating and A/C business is locally owned and operated. We feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today! 631-652-8910
"Really happy with the work performed. Great communication, they arrived when they said they would, and quickly and successfully repaired the issue!"
Steven G on June 2024
FAQs for boiler repair projects in Mount Sinai, NY
The average cost to install a new water heater is around $1,300, but you can expect to pay between $875 and $1,750, depending on the kind of water heater, the size of the unit, and the professional chosen to complete the work. Tankless water heaters can push your price higher, as installation is more complicated, with prices as high as $3,500. The location and accessibility of your water heater will play a role in the project cost, as those sitting in tight spaces like a crawl space will drive up your labor costs.
Yes, most states require plumbers to be licensed, and for good reason. Hiring an unlicensed plumber could lead to poor quality work, costly future expenses, and potential code violations.
As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.
Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations.
As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.
It is very difficult and dangerous to install your own water heater, so we strongly recommend against tackling this as a DIY project. Not only will you need to wire your water heater, but you’ll also need to connect plumbing to the intake and outlet. Sweating copper pipes and connecting wiring properly are skills most DIYers don’t have, and even if you do feel confident you can do it, working with water and electricity always leaves the potential for electrocution. Hiring a local water heater installer is well worth the investment.
The average cost to hire a plumber is around $100 an hour but can vary between $45 and $200 an hour depending on the plumber’s experience and the repair that you need. It’s also important to note that these prices can go up on holidays, and emergency plumber rates average $150 per hour, in addition to a flat-rate trip fee of $100 to $350.
- Miller Place
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- Yaphank
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- Long Island
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