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Ducts & vents installers and replacers 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 North Shore Home Energy, LLC

North Shore Home Energy, LLC

77 Exeter Rd, Unit G
4.92(
13
)
Approved Pro

North Shore Home Energy, LLC

77 Exeter Rd, Unit G
4.92(
13
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

We are a well established business, with over 5 years of unmatched expertise. Customer preference and priorities are always first. We are very timely with our work and never lose attention to detail. Contact NSHEC, today for your free estimate and we will be there in your time of need!

"Payment was requested on completion of the project which was not discussed. The work was done quickly and the tech was friendly and knowledgeable."

Marc-Anthony S on February 2025

We are a well established business, with over 5 years of unmatched expertise. Customer preference and priorities are always first. We are very timely with our work and never lose attention to detail. Contact NSHEC, today for your free estimate and we will be there in your time of need!

"Payment was requested on completion of the project which was not discussed. The work was done quickly and the tech was friendly and knowledgeable."

Marc-Anthony S on February 2025


Bell Heating Service, LLC

6 McGrath St
New on HomeAdvisorNew on HomeAdvisor
Approved Pro

Bell Heating Service, LLC

6 McGrath St
New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2 years of experience
Free onsite estimate

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! Book with us online or feel free to give us a call today!

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! Book with us online or feel free to give us a call today!


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
35 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


Avatar for 603 MECHANICAL

603 MECHANICAL

418 Lafayette Road
5.00(
3
)
Approved Pro

603 MECHANICAL

418 Lafayette Road
5.00(
3
)
Approved Pro
Customers say: Quick response
31 local quotes requested
3 years of experience

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!

"The gentlemaen that have come to my house from this company have been spectacular. They came on time they’re efficient. There’s no nonsense. They found a problem replaced it and said please call back if there’s a problem and they couldn’t have been nicer. I would highly highly recommend them to anyone "

james F s on August 2025

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!

"The gentlemaen that have come to my house from this company have been spectacular. They came on time they’re efficient. There’s no nonsense. They found a problem replaced it and said please call back if there’s a problem and they couldn’t have been nicer. I would highly highly recommend them to anyone "

james F s on August 2025


Avatar for Freedom Air Mechanical

Freedom Air Mechanical

150 Mount Hope Rd
4.77(
13
)
Approved Pro

Freedom Air Mechanical

150 Mount Hope Rd
4.77(
13
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
68 local quotes requested

As a Veteran owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. With attention to detail and a great work ethic your project is in good hands. We work with you to make sure the end result meets your needs. Our work is done with integrity, and it will show in the completion of your project. We are an Efficiency Maine Registered Contractor and are also a contractor for the NEIF. We install heat pumps low temp or standard temp applications. We use manufacturers such as Mitsubishi, Gree or Daikin. These systems can provide low temp heating options down to -22 degrees! We provide installations of Hybrid Water Heaters, Gas and or Oil fired boiler replacements. We also offer Warm air furnace replacements and central ac replacements. Anything hvac/r related we can do. With over 23 years in the field residential/commercial our techs can handle any project. Give us a call at 207-849-0238 or check out our website freedomairhvacr.com to schedule a free estimate today!

"Very smooth, timely and professional."

Brian P on July 2025

As a Veteran owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. With attention to detail and a great work ethic your project is in good hands. We work with you to make sure the end result meets your needs. Our work is done with integrity, and it will show in the completion of your project. We are an Efficiency Maine Registered Contractor and are also a contractor for the NEIF. We install heat pumps low temp or standard temp applications. We use manufacturers such as Mitsubishi, Gree or Daikin. These systems can provide low temp heating options down to -22 degrees! We provide installations of Hybrid Water Heaters, Gas and or Oil fired boiler replacements. We also offer Warm air furnace replacements and central ac replacements. Anything hvac/r related we can do. With over 23 years in the field residential/commercial our techs can handle any project. Give us a call at 207-849-0238 or check out our website freedomairhvacr.com to schedule a free estimate today!

"Very smooth, timely and professional."

Brian P on July 2025


Avatar for NextGen Aire

NextGen Aire

31 South Hunt Road
4.78(
9
)
Approved Pro

NextGen Aire

31 South Hunt Road
4.78(
9
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
951 local quotes requested

Founded by Matthew Girouard, NextGen Aire, LLC is an elite HVAC company that dramatically improves our customers comfort by providing top level education, integrity and honest solutions. We integrate the best technology with an industry leading service experience to provide tailored home comfort solutions to our customers. We have a team of experienced and certified technicians who are knowledgeable about the latest technologies and techniques in the industry. We are trained to diagnose and fix problems with HVAC systems quickly and efficiently, using the best tools and equipment available. We have strong customer service policies in place. This includes being punctual, respectful, and transparent with our clients. We offer flexible scheduling and emergency services to meet the needs of our customers. Our comfort team believes in a consultative sales experience that focuses on building a relationship with the customer and understanding your needs and challenges. It involves actively listening to the customer and asking questions to gather information, rather than simply trying to sell a product or service. We focus on helping the customer identify their goals and offer customized solutions that meet their specific needs. This may involve making recommendations, providing demos or product samples, or presenting options for the customer to consider. We also stand behind our work with industry leading guarantees.

"Really appreciate the help we received. We had an emergency and they were able to come out to help us quickly and resolved the issue for a fair price. Would definitely hire again."

Jason G on July 2024

Founded by Matthew Girouard, NextGen Aire, LLC is an elite HVAC company that dramatically improves our customers comfort by providing top level education, integrity and honest solutions. We integrate the best technology with an industry leading service experience to provide tailored home comfort solutions to our customers. We have a team of experienced and certified technicians who are knowledgeable about the latest technologies and techniques in the industry. We are trained to diagnose and fix problems with HVAC systems quickly and efficiently, using the best tools and equipment available. We have strong customer service policies in place. This includes being punctual, respectful, and transparent with our clients. We offer flexible scheduling and emergency services to meet the needs of our customers. Our comfort team believes in a consultative sales experience that focuses on building a relationship with the customer and understanding your needs and challenges. It involves actively listening to the customer and asking questions to gather information, rather than simply trying to sell a product or service. We focus on helping the customer identify their goals and offer customized solutions that meet their specific needs. This may involve making recommendations, providing demos or product samples, or presenting options for the customer to consider. We also stand behind our work with industry leading guarantees.

"Really appreciate the help we received. We had an emergency and they were able to come out to help us quickly and resolved the issue for a fair price. Would definitely hire again."

Jason G on July 2024


Avatar for Heritage Home Service

Heritage Home Service

179 Lafayette Rd
5.00(
10
)
Approved Pro

Heritage Home Service

179 Lafayette Rd
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
377 local quotes requested

Heritage Home Service is a premier home service provider operating in New Hampshire, Massachusetts and Maine – bringing all the perks that come with having a large team while maintaining a strong focus on family-oriented service.

"Bob and Matt replaced our Rianni tankless water heater. They were prompt, professional, friendly and informative. They did a great job and I would recommend them to anyone."

Linda & B on July 2025

Heritage Home Service is a premier home service provider operating in New Hampshire, Massachusetts and Maine – bringing all the perks that come with having a large team while maintaining a strong focus on family-oriented service.

"Bob and Matt replaced our Rianni tankless water heater. They were prompt, professional, friendly and informative. They did a great job and I would recommend them to anyone."

Linda & B on July 2025


Avatar for Heritage Home Service

Heritage Home Service

28 Commercial Ct
4.04(
455
)
Approved Pro

Heritage Home Service

28 Commercial Ct
4.04(
455
)
Approved Pro
Customers say: Super punctual
1437 local quotes requested
39 years of experience

We’re Your Local Plumbers, Heating and AC Technicians, and Electricians. Get prompt and professional plumbing, heating, air conditioning, and electrical services. Our quality staff of licensed and local plumbers and electricians have been providing local plumbing, heating, air conditioning, and electric services in the New Hampshire area since our beginnings in 1986. At our heart, Heritage is a family company with a longstanding reputation for providing quality service for a fair price. People tell us that they see our service trucks everywhere in the area, which is true since there’s a good chance that one of our technicians is also your neighbor. This makes it easy for us to be at your home promptly to help you solve your household plumbing, heating, AC, and electrical problems. It also makes it easy for us to do all that we can to maintain our reputation for quality service. One way we continue to improve the quality of our work is through regular training and certification for our great attendants who are behind the scenes making the magic happen. So whether you are struggling with a clogged drain or a noisy furnace, or you need an installation of an appliance, you’ll see the results of our devotion in the service you receive. If you’re experiencing a problem with your plumbing, heating, AC, or electricity at home, then you should give us a call and see what we mean by quality service that’s guaranteed. From clogged drains to AC installation to electrician’s work, we offer a variety of quality services and products at fair prices to NH residents and northern MA residents—guaranteed!

"Excellent experience, technician arrived on time. Friendly, efficient, kept me up to date on the plan. Leak was diagnosed and toilet replaced in no time!"

Elizabeth S on July 2025

We’re Your Local Plumbers, Heating and AC Technicians, and Electricians. Get prompt and professional plumbing, heating, air conditioning, and electrical services. Our quality staff of licensed and local plumbers and electricians have been providing local plumbing, heating, air conditioning, and electric services in the New Hampshire area since our beginnings in 1986. At our heart, Heritage is a family company with a longstanding reputation for providing quality service for a fair price. People tell us that they see our service trucks everywhere in the area, which is true since there’s a good chance that one of our technicians is also your neighbor. This makes it easy for us to be at your home promptly to help you solve your household plumbing, heating, AC, and electrical problems. It also makes it easy for us to do all that we can to maintain our reputation for quality service. One way we continue to improve the quality of our work is through regular training and certification for our great attendants who are behind the scenes making the magic happen. So whether you are struggling with a clogged drain or a noisy furnace, or you need an installation of an appliance, you’ll see the results of our devotion in the service you receive. If you’re experiencing a problem with your plumbing, heating, AC, or electricity at home, then you should give us a call and see what we mean by quality service that’s guaranteed. From clogged drains to AC installation to electrician’s work, we offer a variety of quality services and products at fair prices to NH residents and northern MA residents—guaranteed!

"Excellent experience, technician arrived on time. Friendly, efficient, kept me up to date on the plan. Leak was diagnosed and toilet replaced in no time!"

Elizabeth S on July 2025


davis construction

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

davis construction

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
460 local quotes requested
2 years of experience

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. Call or message us to schedule an estimate today!

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. Call or message us to schedule an estimate today!

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FAQs for ducts & vents installation and replacement projects in Portsmouth, NH

Return air vents aren't required in every room, but proper placement is essential for system efficiency. According to industry standards, you'll need one return vent for every 100 to 150 square feet of living space. Ideally, each room would have its own return vent, especially larger rooms exceeding 100 square feet. 

Without adequate return airflow, your HVAC system works harder, energy costs increase, and comfort decreases. A professional assessment can determine the optimal number and placement of return vents for your specific home layout.

Signs that your home needs additional return air vents include rooms that feel consistently stuffy, noticeable temperature variations between rooms, doors that slam shut when the HVAC system operates, or unexpectedly high energy bills. Excessive dust accumulation around supply vents can also indicate inadequate return airflow. 

If you experience these issues, consulting with an HVAC professional can help determine if adding return vents would improve your system's performance.

Supply vents deliver conditioned air into your living spaces, while return air vents draw room air back to your HVAC system for reconditioning. Supply vents push treated air into rooms, while return vents pull air from rooms back toward your heating and cooling equipment. 

Both components are essential for proper air circulation and system balance. Without sufficient return capacity, your HVAC system may experience pressure imbalances that reduce efficiency and comfort.

You should inspect and clean your return air vents at least once annually, according to industry recommendations. However, homes with pets, allergy sufferers, or noticeable dust buildup may benefit from more frequent cleaning. 

Regular maintenance helps maintain good indoor air quality and ensures your HVAC system operates efficiently. Professional duct cleaning, which addresses the entire system beyond just the visible vents, is recommended every few years, depending on your home's specific conditions.

The Portsmouth, NH homeowners’ guide to ducts & vents installations and replacements

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

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