Top-rated boiler repair pros.

Get matched with top boiler repair pros in Sandown, NH

Enter your zip and get matched with up to 5 pros

Need a pro for your boiler repair project in Sandown, NH?

Select your specific project to find the pro for you.

TRUSTED BY SANDOWN, NH HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon638
    Verified boiler repairs reviews

Find Boiler repair pros in Sandown

CS Heating & Cooling

5.00(
1
)
Approved Pro

CS Heating & Cooling

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

With over 7 years of experience, I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

"He was very attentive to our project and was reasonably priced!"

Adam P on August 2022

With over 7 years of experience, I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

"He was very attentive to our project and was reasonably priced!"

Adam P on August 2022


Reliant Plumbing & Heating, LLC

5.00(
21
)
Approved Pro

Reliant Plumbing & Heating, LLC

5.00(
21
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
16 years of experience

Anthony has over 20 years of experience in the trade. He graduated from Whittier Tech High School in Amesbury, MA with a concentration in plumbing. After high school he attended The Peterson School which has one of the best comprehensive training program in the New England Area that prepared him for his journeyman license testing that he took at age 23. Two short years later, Anthony received his Plumbing Masters License from the State of Massachusetts. Being an ambitious person paired with understanding the value that education provides to customers, he continued on to receive a total of 7 licenses that he still holds today. Anthony has the following licenses: MA ?Masters in Plumbing, MA -Journeyman in Plumbing, MA -Master in Sheet Metal, MA -Oil Burner Technician, NH -Master in Plumbing, NH - Gas Technician, and EPA Certification.

"Reliant Plumbing and Heating is my go to guy. He has replaced my water heater and air conditioning compressor. His an expert in many ways. He is alway reliable, honest and hardworking. He answers all questions that I have asked of him. I would recommend hum as a superior plumber. If you need the best, ask for Reliant. "

Gerry Q on July 2025

Anthony has over 20 years of experience in the trade. He graduated from Whittier Tech High School in Amesbury, MA with a concentration in plumbing. After high school he attended The Peterson School which has one of the best comprehensive training program in the New England Area that prepared him for his journeyman license testing that he took at age 23. Two short years later, Anthony received his Plumbing Masters License from the State of Massachusetts. Being an ambitious person paired with understanding the value that education provides to customers, he continued on to receive a total of 7 licenses that he still holds today. Anthony has the following licenses: MA ?Masters in Plumbing, MA -Journeyman in Plumbing, MA -Master in Sheet Metal, MA -Oil Burner Technician, NH -Master in Plumbing, NH - Gas Technician, and EPA Certification.

"Reliant Plumbing and Heating is my go to guy. He has replaced my water heater and air conditioning compressor. His an expert in many ways. He is alway reliable, honest and hardworking. He answers all questions that I have asked of him. I would recommend hum as a superior plumber. If you need the best, ask for Reliant. "

Gerry Q on July 2025


"Bright knows exactly what he's doing and how to fix a major plumbing issue. Very professional, prompt, has very clear communication, is hard working, very hard working, and personable. He has the proper equipment do diagnose and fix the problem in a timely manner. His knowledge of plumbing is also exemplary. It was a pleasure doing business with him and will hire him for future jobs. Thank you Bright!"

Ava D on January 2022

We pride ourselves on reliability, communication, integrity, and quality work. We are experts in our trade. We look forward to earning your business! Please call 978-941 5561 For all drain and sewer services

"Bright knows exactly what he's doing and how to fix a major plumbing issue. Very professional, prompt, has very clear communication, is hard working, very hard working, and personable. He has the proper equipment do diagnose and fix the problem in a timely manner. His knowledge of plumbing is also exemplary. It was a pleasure doing business with him and will hire him for future jobs. Thank you Bright!"

Ava D on January 2022


Avatar for Easy A's Plumbing & Heating, LLC

Easy A's Plumbing & Heating, LLC

4.50(
3
)
Approved Pro

Easy A's Plumbing & Heating, LLC

4.50(
3
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
19 years of experience

Welcome to Easy A's Plumbing & Heating, LLC. We are excited to exceed your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices, and customer satisfaction is our number one priority. Call us now!

"It took much longer than expected, but they were so much more reasonable price wise, it was worth the wait."

Paula S on July 2019

Welcome to Easy A's Plumbing & Heating, LLC. We are excited to exceed your expectations. As experts, we will handle your needs with the high quality expertise that your home or business deserves. We offer competitive prices, and customer satisfaction is our number one priority. Call us now!

"It took much longer than expected, but they were so much more reasonable price wise, it was worth the wait."

Paula S on July 2019


Cool Air

New on AngiNew on Angi
Approved Pro

Cool Air

New on AngiNew on Angi
Approved Pro
16 years of experience
Free onsite estimate

At Cool Air, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

At Cool Air, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.


Avatar for Derry Plumbing & Heating

Derry Plumbing & Heating

4.50(
30
)
Approved Pro

Derry Plumbing & Heating

4.50(
30
)
Approved Pro
Customers say: Quality work
36 years of experience
Free onsite estimate

If you�re familiar with plumbing, you know that doing it right takes just the right recipe: two parts job knowledge and three parts skill. At Londonderry Plumbing and Heating, we provide everything you need to secure the perfect plumbing solution, a mixture that will do you right, just like home cooking! No job is too small or too challenging for our dedicated professionals! Londonderry Plumbing and Heating can tackle your most challenging plumbing problems and do so at affordable rates. If you are looking for a plumber who is highly qualified, quick to respond and a pleasure to do business with, give us a call. We look forward to adding you to our list of satisfied customers!

"Great service! Emergency service and done within the day!"

Bonnie S on May 2025

If you�re familiar with plumbing, you know that doing it right takes just the right recipe: two parts job knowledge and three parts skill. At Londonderry Plumbing and Heating, we provide everything you need to secure the perfect plumbing solution, a mixture that will do you right, just like home cooking! No job is too small or too challenging for our dedicated professionals! Londonderry Plumbing and Heating can tackle your most challenging plumbing problems and do so at affordable rates. If you are looking for a plumber who is highly qualified, quick to respond and a pleasure to do business with, give us a call. We look forward to adding you to our list of satisfied customers!

"Great service! Emergency service and done within the day!"

Bonnie S on May 2025


George E. Maihos Electric

4.88(
49
)
Approved Pro

George E. Maihos Electric

4.88(
49
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
45 years of experience

George E. Maihos Electric has been in business as a Master Licensed electrical contractor since 1980, with over 45 years of experience! As a former State of NH Electrical Licensing Board member, local electrical inspector, and certified electrical inspector, we have the knowledge and ability to specialize in all of your home and business electrical needs. From a small electrical repair of your switches, outlets, or fixtures to electrical upgrades, new additions for your home or business, we are here for you. We strive to exceed the homeowners' expectations each and every time and get the job done the way you want it. We work in a timely fashion and always pay close attention to detail. Please call for a free estimate or for answers to your electrical questions or concerns.

"George was very easy to work with, flexible with scheduling and on time when the day was finalized. We had a Ring floodlight cam installed and the price was very reasonable. Highly recommend George, we ll be using him for future projects."

Jessica B on January 2020

George E. Maihos Electric has been in business as a Master Licensed electrical contractor since 1980, with over 45 years of experience! As a former State of NH Electrical Licensing Board member, local electrical inspector, and certified electrical inspector, we have the knowledge and ability to specialize in all of your home and business electrical needs. From a small electrical repair of your switches, outlets, or fixtures to electrical upgrades, new additions for your home or business, we are here for you. We strive to exceed the homeowners' expectations each and every time and get the job done the way you want it. We work in a timely fashion and always pay close attention to detail. Please call for a free estimate or for answers to your electrical questions or concerns.

"George was very easy to work with, flexible with scheduling and on time when the day was finalized. We had a Ring floodlight cam installed and the price was very reasonable. Highly recommend George, we ll be using him for future projects."

Jessica B on January 2020


Avatar for Septic Designs of NH, LLC

Septic Designs of NH, LLC

4.75(
25
)
Approved Pro

Septic Designs of NH, LLC

4.75(
25
)
Approved Pro
Customers say: Terrific value
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
21 local quotes requested

Septic Designs of NH LLC is a Veteran owned small business with BBB accreditation. We take great pride in our work and are not satisfied until you are. We do Septic Designs, Inspections, Tank Replacements, and Septic Repairs. We also clear main sewer lines and do Trenchless Pipe Repair. Which is a NO DIG solution for pipe replacements. Our jetter is also a HEATED jetter for that tough grease or other buildup where you need some extra hot water to really clean the pipe.

"I called every plumber around and Septic Design of NH had the best price to put a camera down the sewer line. Problem was located in no time."

Vickie C on September 2021

Septic Designs of NH LLC is a Veteran owned small business with BBB accreditation. We take great pride in our work and are not satisfied until you are. We do Septic Designs, Inspections, Tank Replacements, and Septic Repairs. We also clear main sewer lines and do Trenchless Pipe Repair. Which is a NO DIG solution for pipe replacements. Our jetter is also a HEATED jetter for that tough grease or other buildup where you need some extra hot water to really clean the pipe.

"I called every plumber around and Septic Design of NH had the best price to put a camera down the sewer line. Problem was located in no time."

Vickie C on September 2021


Avatar for Gotme Under Pressure ?, LLC

Gotme Under Pressure ?, LLC

4.49(
580
)
Approved Pro

Gotme Under Pressure ?, LLC

4.49(
580
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
10 local quotes requested

Gotme under pressure? LLC IS A Plumbing, Heating & Gasfitting, Drain Cleaning professional in your area. We will meet all of your plumbing needs. We take the pressure off all your plumbing issues. As our company is built off of honesty, integrity and leadership, this is what you can expect.

"Great work with the inspection. Will go back for future plumbing work"

Antonio S on September 2022

Gotme under pressure? LLC IS A Plumbing, Heating & Gasfitting, Drain Cleaning professional in your area. We will meet all of your plumbing needs. We take the pressure off all your plumbing issues. As our company is built off of honesty, integrity and leadership, this is what you can expect.

"Great work with the inspection. Will go back for future plumbing work"

Antonio S on September 2022


Avatar for Freedom Electric, LLC

Freedom Electric, LLC

5.00(
3
)
Approved Pro

Freedom Electric, LLC

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

With more than 8 yrs of experience, Freedom Electric LLC is dedicated to providing our customers with the best quality at a great price. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

"We love how Tyler always goes above and beyond. Always pointing out and fixing potential problems. Hard to find companies like his. We would definitely recommend Freedom Electric"

Ken B on April 2023

With more than 8 yrs of experience, Freedom Electric LLC is dedicated to providing our customers with the best quality at a great price. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

"We love how Tyler always goes above and beyond. Always pointing out and fixing potential problems. Hard to find companies like his. We would definitely recommend Freedom Electric"

Ken B on April 2023

...
Showing 1-10 of 238
Boiler Repair questions, answered by experts

Not every type of baseboard heater needs to be bled. Hydronic baseboard heaters need to have air removed at least occasionally, but electric or gas versions that don’t use water at all don’t need to be bled. There are no pipes or valves on these models to worry about, nor any central boiler. Instead, they use heating elements or other methods to supply direct heat to a room.

Boilers are equipped with multiple safety features to ensure safe operation. These include pressure relief valves to prevent overpressure, temperature high-limit switches to avoid overheating, and flame failure safety devices in gas boilers to cut off the gas supply if the flame goes out unexpectedly. Low water cutoffs prevent operation with insufficient water levels, and pressure gauges help monitor pressure levels. Ventilation and flue systems prevent the buildup of harmful gasses. Boilers often feature error code systems for automatic shutdown during malfunctions and gas leak detection for safety. Regular maintenance is crucial to ensure these safety features function correctly.

With proper maintenance, boilers last for around 15 years on average. A cast iron boiler may last longer, over 20 years, but you should always consider the efficiency of older boilers and opt to replace an old one if it’s significantly lower than newer, high-efficiency boilers. Otherwise, you’ll be spending more on your utility bills each month.

If you're often struggling with radiator issues like chilly spots, leaks, or annoying noises, those are common indications that your radiator may need to be replaced. Corrosion, uneven heating, and persistent hissing sounds are common issues as well. When repairs become a regular chore and your home’s energy bills start to rise, a new radiator will bring the comfort and savings you need.

If you hire a professional to replace your gas furnace’s thermocouple, you’ll usually pay between $150 and $250. Since thermocouples often fail due to a lack of maintenance, you may be able to avoid—or at least delay—a thermocouple replacement by taking good care of your furnace. This means scheduling annual furnace inspections, changing the filters at least once per season, and cleaning the burners occasionally.

The Sandown, NH homeowners’ guide to boiler repairs

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