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Heating and furnace pros in Portsmouth

Avatar for Easy A's Plumbing & Heating, LLC
Easy A's Plumbing & Heating, LLC
81 Mountain View Drive
4.50(
3
)
Approved Pro
Easy A's Plumbing & Heating, LLC
81 Mountain View Drive
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


Avatar for Next Level Heating and Cooling LLC
Next Level Heating and Cooling LLC
8 Applevale Drive
5.00(
1
)
Approved Pro
Next Level Heating and Cooling LLC
8 Applevale Drive
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 9 years experience in the HVAC industry, Next Level Heating and Cooling LLC is your industry expert in the Dover, NH area. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. We have so many options to fit any budget. Give us a call today and we look forward to working with you!

"Very good service, communication and pricing. Definitely I would recommend and hire again."

Janet C on June 2022

With over 9 years experience in the HVAC industry, Next Level Heating and Cooling LLC is your industry expert in the Dover, NH area. We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will leave your property until you are completely satisfied with our work. As a family owned and operated business you can trust that we will treat your home as we would treat our own. We have so many options to fit any budget. Give us a call today and we look forward to working with you!

"Very good service, communication and pricing. Definitely I would recommend and hire again."

Janet C on June 2022


Avatar for Danerik Mechanical LLC
Danerik Mechanical LLC
325 Bunker Hill Rd
4.96(
12
)
Approved Pro
Danerik Mechanical LLC
325 Bunker Hill Rd
4.96(
12
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
27 local quotes requested

Danerik Mechanical LLC we pride ourselves on being the best PWC company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"Awesome results. Very professional and work was completed as expected."

James G on December 2024

Danerik Mechanical LLC we pride ourselves on being the best PWC company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"Awesome results. Very professional and work was completed as expected."

James G on December 2024


Angell Electric
283 High St
5.00(
10
)
Approved Pro
Angell Electric
283 High St
5.00(
10
)
Approved Pro
Customers say: Quality work
37 local quotes requested
6 years of experience

Angell Electric is dedicated to providing our customers with the best quality and craftsmanship. 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! M-F 7-7 Sat 8-5

"Hi , Eric do a great job , he hard working, with reasonable price, our family knows him a long time , good job Eric , hopefully you have a lot of Bisseness "

hung n on May 2025

Angell Electric is dedicated to providing our customers with the best quality and craftsmanship. 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! M-F 7-7 Sat 8-5

"Hi , Eric do a great job , he hard working, with reasonable price, our family knows him a long time , good job Eric , hopefully you have a lot of Bisseness "

hung n on May 2025


Avatar for Paul The Plumber, LLC
Paul The Plumber, LLC
111 Franklin Street Extension
4.30(
15
)
Approved Pro
Paul The Plumber, LLC
111 Franklin Street Extension
4.30(
15
)
Approved Pro
Customers say: True professional
31 local quotes requested
23 years of experience

Do you live in an older home in need of some maintenance or remodeling? Maybe you’re eyeing a dream home but want to make sure that it isn’t hiding any outdated plumbing or HVAC issues. Paul The Plumber is here to help you with all of your plumbing, heating, and air conditioning needs! From repairs to replacements to proactive maintenance, we'll always provide honest, expert recommendations and personalized solutions. Our goal is to ensure your safety and comfort no matter the season. Every contractor on our team is trained, experienced, and puts quality customer service at a priority. We’re here for you when you need us the most—whether you’re looking to lower your heating bills, save on your water use, get cleaner water, or improve your home’s indoor air quality.

"There is not a category for this project.. a shower head cartridge replacement. The cost on the flat rate for Paul the Plumber $969. This flat rate price is way above anyone else who would perform this job. There were no complications involved but the cartridge had to be picked up from another truck. I have learned from other plumbers with a good reputation that the cost should be around $400 without complications which mine was. "

Alice G on January 2025

Do you live in an older home in need of some maintenance or remodeling? Maybe you’re eyeing a dream home but want to make sure that it isn’t hiding any outdated plumbing or HVAC issues. Paul The Plumber is here to help you with all of your plumbing, heating, and air conditioning needs! From repairs to replacements to proactive maintenance, we'll always provide honest, expert recommendations and personalized solutions. Our goal is to ensure your safety and comfort no matter the season. Every contractor on our team is trained, experienced, and puts quality customer service at a priority. We’re here for you when you need us the most—whether you’re looking to lower your heating bills, save on your water use, get cleaner water, or improve your home’s indoor air quality.

"There is not a category for this project.. a shower head cartridge replacement. The cost on the flat rate for Paul the Plumber $969. This flat rate price is way above anyone else who would perform this job. There were no complications involved but the cartridge had to be picked up from another truck. I have learned from other plumbers with a good reputation that the cost should be around $400 without complications which mine was. "

Alice G on January 2025


Avatar for Central New Hampshire Heating and Cooling, LLC
Central New Hampshire Heating and Cooling, LLC
75 Millsfield Lane
4.90(
20
)
Approved Pro
Central New Hampshire Heating and Cooling, LLC
75 Millsfield Lane
4.90(
20
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

We are dedicated to providing our clients with the very best in installation for your heating needs. Our company is built on honesty and integrity and the best service technicians and installers in the business. We specialize in forced hot air heating systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. We are now taking on service work on a appointment basis only, I am one step closer to having a 24 hr service department. Our fee is 200 for a service call to show up and diagnose. If you use us to do the work that service charge goes towards the cost for the job. It will count as 1 hour, there is a minimum of 2 hours labor on any work to be completed. Thank you

"They came on when scheduled and work was done great."

Jason F on January 2021

We are dedicated to providing our clients with the very best in installation for your heating needs. Our company is built on honesty and integrity and the best service technicians and installers in the business. We specialize in forced hot air heating systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. We are now taking on service work on a appointment basis only, I am one step closer to having a 24 hr service department. Our fee is 200 for a service call to show up and diagnose. If you use us to do the work that service charge goes towards the cost for the job. It will count as 1 hour, there is a minimum of 2 hours labor on any work to be completed. Thank you

"They came on when scheduled and work was done great."

Jason F on January 2021


Avatar for Olson Heating & Cooling
Olson Heating & Cooling
65 Causeway Street
5.00(
3
)
Approved Pro
Olson Heating & Cooling
65 Causeway Street
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

Our mission at Olson Heating & Cooling is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! Company Name stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"Very professional and honest service. Takes time to explain performance of unit, necessary maintenance and future maintenance. A pleasure to work with."

Scott G on August 2020

Our mission at Olson Heating & Cooling is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! Company Name stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!

"Very professional and honest service. Takes time to explain performance of unit, necessary maintenance and future maintenance. A pleasure to work with."

Scott G on August 2020


Avatar for Derry Plumbing & Heating
Derry Plumbing & Heating
41 Birch St
4.50(
30
)
Approved Pro
Derry Plumbing & Heating
41 Birch St
4.50(
30
)
Approved Pro
Customers say: Quality work
54 local quotes requested
36 years of experience

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


Avatar for LaPlante Electric, Inc.
LaPlante Electric, Inc.
183 US-1, Suite G
4.75(
63
)
Approved Pro
LaPlante Electric, Inc.
183 US-1, Suite G
4.75(
63
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
70 local quotes requested

LaPlante Electric, Inc., Please check out all the Wonderful Reviews written by our Wonderful Clients!!! Love our Clients!!! LaPlante Electric is proud to be a locally owned and family operated business that serves the Maine/New Hampshire communities. Since 1991 we have provided our customers with the highest quality products and expertise at a fair price. Since opening our doors we have built our business on being timely, tidy and making sure that every customer is 100% satisfied when the job is done. We provide our customers with on site assessments and quotes, provide financing and payment options and offer flexible installation scheduling. Our customers know that they can call 24/7 and the phone will be answered by a live person, that they will get a firm price, not an estimate and that we will show up on time when scheduled. Let us show you why our customers become customers for life, get in touch today!

"Very good They were quick efficient and kept me updated"

Janice C on November 2023

LaPlante Electric, Inc., Please check out all the Wonderful Reviews written by our Wonderful Clients!!! Love our Clients!!! LaPlante Electric is proud to be a locally owned and family operated business that serves the Maine/New Hampshire communities. Since 1991 we have provided our customers with the highest quality products and expertise at a fair price. Since opening our doors we have built our business on being timely, tidy and making sure that every customer is 100% satisfied when the job is done. We provide our customers with on site assessments and quotes, provide financing and payment options and offer flexible installation scheduling. Our customers know that they can call 24/7 and the phone will be answered by a live person, that they will get a firm price, not an estimate and that we will show up on time when scheduled. Let us show you why our customers become customers for life, get in touch today!

"Very good They were quick efficient and kept me updated"

Janice C on November 2023


Avatar for 603 MECHANICAL
603 MECHANICAL
418 Lafayette Road
5.00(
2
)
Approved Pro
603 MECHANICAL
418 Lafayette Road
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 local quotes requested

With more than 15 yrs of experience, 603 Refrigeration 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!

"Great"

anthony h on June 2023

With more than 15 yrs of experience, 603 Refrigeration 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!

"Great"

anthony h on June 2023

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Showing 1-10 of 466

FAQs for heating and furnace service projects in Portsmouth, NH

Consider replacing your gravity furnace when it's over 30 years old, when you experience frequent system failures, or when your heating bills continue rising despite maintenance. Many older gravity systems operate at substantially lower efficiency rates compared to modern alternatives, often 50% to 60% versus the 80% to 98% efficiency of contemporary furnaces. 

Replacement also makes sense when your existing system shows signs of deterioration that could affect safety or when professional inspection reveals significant issues.

Most gravity furnace replacements require between six and 12 hours of professional labor, spanning one to two working days, depending on scheduling and complexity. Basic installations with minimal complications may be completed in a single day, while projects requiring extensive ductwork modifications or asbestos remediation will require additional time. 

The timeline includes removal of the old system, preparation of the installation area, placement and connection of the new furnace, and thorough testing.

Watch for warning signs, including inconsistent heating throughout your home, unusual noises during operation, visible corrosion or damage to the heat exchanger, and steadily increasing energy consumption. If your furnace requires frequent repairs or if you notice a yellow or flickering pilot light instead of a steady blue flame, these may indicate serious issues. 

Age remains a primary consideration—systems over 30 years old warrant replacement rather than continued repair.

Well-maintained gravity furnaces that pass professional safety inspections can continue operating, but they inherently carry more risk factors than modern systems. Potential concerns include less efficient combustion that may produce carbon monoxide, deteriorating components that could create fire hazards, and the possible presence of asbestos in insulation materials. 

Modern furnaces incorporate numerous safety improvements, including automatic shutdown features, sealed combustion chambers, and electronic ignition systems that eliminate standing pilot lights.

The Portsmouth, NH homeowners’ guide to heating and furnace services
From average costs to expert advice, get all the answers you need to get your job done.
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