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Come along for a view of our expert care team in action. Service Experts - we deliver expert HVAC, and plumbing services nationwide. This video showcases the dedication of our team to provide professional service and local care for your home system needs.

Strogen's Service Experts Serving Rochester since 1977

Expert home services—locally managed with national brand support. Quick repairs, full upgrades, or anything in between.

  • We’ll Make Your Payments for 6 Months

    With any new HVAC, Indoor Air Quality, Water Heater or Water treatment Service Experts Advantage Program lease agreement, we will make your payments for the first 6 months.

    Valid on new Advantage Program lease agreements from 1/7/26 through 1/31/26. Customer owes $0 for the first six months; regular monthly lease payments begin thereafter. Early termination during promotional period will result in charges for elapsed months. See your full Advantage Program Lease Agreement for complete terms and conditions, including total lease cost and payment schedule. Jan 7, 2026 - Feb 28, 2026
  • Up to $1,800 in rebates when you purchase a qualifying Lennox HVAC System

    System rebate requires the purchase of an indoor unit, an outdoor unit and a qualifying thermostat. System add-ons do not qualify for an individual rebate and cannot be combined with individual unit offers. Rebate offer valid from 1/19/26 through 2/13/26 and must be installed by 2/20/26. Claim rebate by March 22, 2026; rebate is paid in the form of a Lennox prepaid Mastercard®.

    All rebate information found at https://www.lennox.com/residential/buyers-guide/offers-and-savings/promotions/. Equipment brands and offers vary by Service Experts location, call your local Center for more details. Jan 19, 2026 - Feb 15, 2026

HVAC Services in Dover, NH

Complete Solutions for Your Home’s Vital Systems

Keeping your home comfortable, efficient, and functional shouldn’t be complicated. Strogen's Service Experts provides homeowners throughout Rochester, Dover, Somersworth, and nearby New Hampshire communities with reliable HVAC solutions designed for New England living. Proudly serving Rochester since 1977, our experienced team tailors every service to the exact needs of each local household.

Whether you need fast AC repairs during a humid summer or a heater replacement in winter, you’ll find responsive, professional support just a call away. Our home experts offer routine maintenance, new system installations, and solutions for emergency breakdowns—all with an emphasis on long-term performance and safety.

Contact us today to schedule service or discover how a local team with national expertise can simplify home maintenance.

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Serving Somersworth & Beyond
Open 24 Hours
30 Centre Road Suite 4 Somersworth, NH 03878
We Service the Following Areas:
  • Alton
  • Alton Bay
  • Barnstead
  • Barrington
  • Bartlett
  • Berwick
  • Center Barnstead
  • Center Strafford
  • Chocorua
  • Dover
  • Durham
  • East Wakefield
  • Epping
  • Exeter
  • Farmington
  • Greenland
  • Hampton
  • Hampton Falls
  • Kittery
  • Lebanon
  • Lee
  • Madbury
  • Melvin Village
  • Milton
  • Milton Mills
  • New Castle
  • New Durham
  • Newfields
  • Newmarket
  • Newton
  • North Berwick
  • North Hampton
  • Nottingham
  • Portsmouth
  • Raymond
  • Rochester
  • Rollinsford
  • Rye
  • Rye Beach
  • Sanbornville
  • Seabrook
  • Somersworth
  • Strafford
  • Stratham
  • Union
  • West Nottingham
  • Wolfeboro
  • Wolfeboro Falls
  • Wonalancet
  • York
  • York Beach
See More Locations See Fewer Locations
Our Experts Make You Feel Right at Home Creating comfortable, efficient homes with expert service and innovative solutions.
  • The Service Experts Guarantee
    We promise that every piece of equipment we work on and install will be set up with care and precision—exactly as the manufacturer intended.
  • Fast Response, 
Anytime You Need Us
    From heating to plumbing, we respond quickly to keep small issues from becoming big problems.
  • Licensed, Bonded & ACE-Certified Experts
    Our nationally certified, ACE-certified professionals are licensed, bonded, and insured, delivering top-tier expert service with complete peace of mind.
  • Schedule Anytime, Day or Night
    Book your appointment whenever it's convenient for you. Our scheduling and customer support are available 24 hours a day, 7 days a week.
Local Knowledge. National Support.

Do you need experienced support from a widely recognized brand? What sets Strogen's Service Experts apart is our blend of local experience and national resources. We’re part of the Service Experts family, a name trusted nationwide since 1996. We bring Rochester-area homeowners the advantages of industry-leading technology, ongoing technician training, and innovative home solutions, all rooted in a commitment to the community.

From the heart of Rochester to Dover, Somersworth, Barrington, and Milton, our team knows the unique climate, building styles, and home challenges of the area. When you partner with Strogen's Service Experts, you get local expertise backed by the strength of a leading national brand.

Hear From Our Happy Clients
  • T
    "Very capable, very personable."
  • J
    "Professional, knowledgeable, and dependable—I highly recommend Chris G."
  • R
    "Our technician Ted deserves 5 stars! He was great and got our heat and hot water back up and running."
  • L
    "Kyle Smith came over to do our annual check-up/cleaning and was very kind and professional."
  • T
    "I had Ted T. come and work on my oil boiler and he was efficient, knowledgeable, and honest."
  • S
    "Brittany is a very pleasant and friendly person."
  • D
    "I am very pleased with the service from Strogen’s."
  • K
    "Marc and Austin did a great job."
  • D
    "Brittany was excellent, prepared and thorough."
  • R
    "Impressive repair service for a malfunctioning valve on our furnace."
  • C
    "Brittany was extremely knowledgeable and patient while troubleshooting the problem with my furnace."
  • E
    "She's knowledgeable, professional, and personable."
  • B
    "She was knowledgeable, informative, and took the time to clearly explain everything about our furnace."
  • R
    "I’ve been a customer for many years and will continue for many more."
  • s
    "Ted Trembey #187 did a great service today getting my furnace up and running."
  • N
    "Brittany Britland did a very thorough job diagnosing and cleaning my house's old oil boiler."
  • S
    "They addressed all my concerns and answered all my questions."
  • G
    "Derek arrived and evaluated the situation with my existing steam heating system."
  • M
    "He was prompt to repair it. He was very professional and kind."
  • R
    "Chris is very polite and professional."
  • K
    "They are the gold standard that all service businesses should follow."
  • T
    "Sean Cerasale was very efficient, courteous, and effective in performing maintenance on our furnace."
  • C
    "I had a technician by the name of Matthew Hendry and he was very knowledgeable and did a great job."
  • T
    "Always top-notch service with Strogen’s. Very personable and professional."
  • M
    "He was very informative and all communication was great."
  • R
    "Easy to set up appointment. Quick and on time. Trust completely."
  • P
    "He did an exceptional job explaining various issues and specific areas that needed to be addressed."
  • T
    "Once again, Strogens came through! My water heater was not giving me hot water."
  • M
    "Chris Gale, our technician, was very thorough and explained the process."
  • A
    "I've been using Strogen's for HVAC repair and maintenance for the past 2 1/2 years and greatly appreciate their honesty, timeliness, and knowledge."
Derek and Chris did a great job
Derek and Chris did a great job. Very capable, very personable. 5 stars.
Outstanding HVAC Technician
Chris G is an outstanding HVAC technician. His technical skills are excellent, and what really impressed me was his ability to think outside the box and solve problems others might miss. He took the time to understand the issue, explained things clearly, and delivered a smart, long-term solution. Professional, knowledgeable, and dependable—I highly recommend Chris G.
Our Technician Ted Deserves 5 Stars
Our technician Ted deserves 5 stars! He was great and got our heat and hot water back up and running. We were not happy with calling for emergency service. It was brutal cold and we waited 2 days with no heat. Even Ted said that was unacceptable. We were under warranty, too.
My experience with Strogens is top notch
My experience with Strogens has always been top notch. Kyle Smith came over to do our annual check-up/cleaning and was very kind and professional and answered any questions I had.
Efficient, Knowledgeable, and Honest
I had Ted T. come and work on my oil boiler and he was efficient, knowledgeable, and honest. What else can you ask for? I'm requesting Ted next time I have to call Strogens!
She does excellent work
Brittany is a very pleasant and friendly person. She does excellent work. I would highly recommend her.
Very pleased with the service
I am very pleased with the service from Strogen’s. Brittany did a great job resolving the issue with my boiler.
Great HVAC Install
Marc and Austin did a great job with the HVAC install.
Brittany Was Excellent
Brittany was excellent, prepared, and thorough in her explanations! 5 stars!
Impressive Repair Service
Impressive repair service for a malfunctioning valve on our furnace. Brittany and Derek were professional and helpful this morning. Very pleasant. Brittany came to our house for an emergency assessment two nights ago and discovered what was wrong. She is definitely knowledgeable and explained how we would remedy the issue. It is reassuring to see young women working in this repair service. Also, a shout-out to customer service for scheduling our service repair. Very helpful to get the updates about when the technician would arrive. Thank you.
Extremely knowledgeable and patient
Brittany was extremely knowledgeable and patient while troubleshooting the problem with my furnace. Even after she fixed my furnace, she stayed to make sure there were no issues.
Knowledgeable, Professional, and Personable
I don't typically post reviews, but I found my technician, Brittany, deserving of a shout-out. She's knowledgeable, professional, and personable. She kept me informed of her progress and findings. I don't usually make requests for specific technicians, but will definitely be requesting her in the future.
Brittany provided exceptional service
Brittany provided exceptional service - she was knowledgeable, informative, and took the time to clearly explain everything about our furnace. I would highly recommend her to all.
John and Derek were great
John and Derek were great. I’ve been a customer for many years and will continue for many more.
Great Service Getting My Furnace Running
Ted Trembey #187 did a great service today getting my furnace up and running this cold Saturday in February.
Boiler Is Running Smoothly Now
Brittany Britland did a very thorough job diagnosing and cleaning my house's old oil boiler which was having issues. The boiler is running smoothly now.
I recommend them highly
Sean and Derek were here for my winter furnace and boiler service. They addressed all my concerns and answered all my questions. I recommend them highly. Excellent work. Kyle was persistent and able to diagnose the heating temperature issue and resolve it. I highly recommend him. 5 stars!
Great response
The office staff set up the appointment to have a representative come to my home in a few days. Derek arrived and evaluated the situation with my existing steam heating system. An estimate to replace the unit was also provided quickly. Great response. Hope to make a decision in a few days.
He was very professional and kind
Jonathan noticed a crack in a casket on my combo water heater/furnace. If it went unnoticed, I would have had a flood. He was prompt to repair it. He was very professional and kind.
Very Polite and Professional
Chris was the service tech that took great professional care of our heating system. Chris is very polite and professional. I'd recommend him to anyone.
They Are the Gold Standard
Communications with Strogen's and getting messages about arrivals, etc. was excellent. They are the gold standard that all service businesses should follow. Chris & Derek were very polite, thorough, and explained things very clearly. This was appreciated because one of the occupants has mild dementia and she actually understood what they were saying. They did not have to speak with her but they were very kind, patient, and used a gentle voice. I have never had service people come here and treated her with such respect. Thank you!
Very efficient, courteous, and effective
Sean Cerasale was very efficient, courteous, and effective in performing maintenance on our furnace. He was very willing and able to answer our questions. I would certainly recommend him and Strogens to friends and neighbors.
Very knowledgeable and did a great job
After quite some time, I finally got a service technician to come to my home and service my boiler. I had a technician by the name of Matthew Hendry, and he was very knowledgeable and did a great job.
Always top-notch service with Strogen’s
Always top-notch service with Strogen’s. My 26-year-old boiler was serviced by Brittany. She took the time to review everything. Very personable and professional. Unfortunately, it will need to be replaced. Not a shock. Met with Derek, who went over options and was great to deal with. I know by choosing Strogen’s to install my new heating system, I will be receiving great service and, more importantly, peace of mind this winter.
They both tried to be as helpful as possible.
We had a pipe in the heating system burst. The same evening after our call, Jonathan Bovee came, evaluated the damage, and repaired the leak the next day. He was very informative and all communication was great. Then Derek Notarangelo arrived to explain about the system replacement and various financing options. They both tried to be as helpful as possible.
Quick, On-Time, and Trustworthy
Easy to set up appointment. Quick and on time. Service tech, Lou, polite, respectful, competent, and friendly. Explained everything. Quick diagnosis and fix of our problem. Update from 12/2025 Chris (tech) and Derek (sales) were both informative and great. Very knowledgeable and quick to advise. No pressure to sell services or products. Trust completely.
Exceptional Job Explaining Issues
Strogens has been caring for my Lennox HVAC system for the past 13 years. Chris came out today to perform annual furnace maintenance. He performed various tests, troubleshooting, and cleaning. As my furnace is reaching the end of its lifecycle, he did an exceptional job explaining various issues and specific areas that needed to be addressed. Derrick was extremely helpful in providing system replacement options for me to consider as well as cost-saving discounts that would be available to me. I really appreciate the honesty and the knowledge they both shared.
Once again, Strogens came through!
Once again, Strogens came through! My water heater was not giving me hot water. Sunday, when I called, they were booked but fit me in! Matt was great! He told me the heater was from 2008 and refurbished in 2016. It's 17 years old, so he worked his magic and got me hot water, but with the age of it, it's questionable for how long. Wes is going to call and give me a quote on Monday or Tuesday. So far, for the past 8 years, Strogens has not done me wrong!! ❤️
Chris Gale Was Very Thorough
Just a yearly maintenance for our mini split. Chris Gale, our technician, was very thorough and explained the process. He is very knowledgeable and is a good person. Service Experts are fortunate to have him.
Honest, Timely, and Knowledgeable
I've been using Strogen's for HVAC repair and maintenance for the past 2 1/2 years and greatly appreciate their honesty, timeliness, and knowledge. All of their techs have been respectful and straightforward about the needs to keep both systems in their best working condition. Chris Gale was out today and he was a pleasure to work with, knowledgeable and straightforward, as I've grown to expect from Strogen's. Thanks for keeping us up and running through another heating season!
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Why Call Anyone Else? We're the Experts in Home Services

Our Somersworth team is ready to take care of your home service needs—with fast service and expert services that you can always rely on.