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Water heater installers and replacers in Hillsborough
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
Action Plumbing, Heating, and Air provides prompt and reliable services to homeowners and businesses. We are fully licensed, bonded, and insured and able to repair or replace any plumbing or heating fixture inside or outside of your home or business. We stand behind our products and services by installing only quality materials and hiring only state licensed plumbers. At Action, we pride ourselves on practicing the highest standards in the business to ensure our customers are provided the best service possible. Take Action against your plumbing or heating problems and call Action! (833) 732-2288
"Dave was quick to respond. Very pleasant and explained everything clearly. Took his time to make sure we were happy with the work."
Richard E on August 2024
Action Plumbing, Heating, and Air provides prompt and reliable services to homeowners and businesses. We are fully licensed, bonded, and insured and able to repair or replace any plumbing or heating fixture inside or outside of your home or business. We stand behind our products and services by installing only quality materials and hiring only state licensed plumbers. At Action, we pride ourselves on practicing the highest standards in the business to ensure our customers are provided the best service possible. Take Action against your plumbing or heating problems and call Action! (833) 732-2288
"Dave was quick to respond. Very pleasant and explained everything clearly. Took his time to make sure we were happy with the work."
Richard E on August 2024
With over 70 years of experience in home improvement, Long Home Products is the industry-leading company you can trust to give you peace of mind. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of roofing, bathroom, window and door projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
With over 70 years of experience in home improvement, Long Home Products is the industry-leading company you can trust to give you peace of mind. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We are experts in all aspects of roofing, bathroom, window and door projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!
Hello, AACT Contracting here! Our team has over 55 years combined experience in all phases of residential construction! We can take your project from frame to finish! We specialize in Bathroom and kitchen remodeling as well as decks and additions!
"AACT was fantastic! Tommy, and his crew, Thaad and Josh, did a great job upgrading our 70's era bathroom into a modern bathroom with a sleek and clean appearance. They completed the job on time and each day cleaned up keeping disruption to a minimum. Further, they helped with a small plumbing project that is helping to keep our front gardens in bloom! We highly recommend AACT."
Pamela D on May 2025
Hello, AACT Contracting here! Our team has over 55 years combined experience in all phases of residential construction! We can take your project from frame to finish! We specialize in Bathroom and kitchen remodeling as well as decks and additions!
"AACT was fantastic! Tommy, and his crew, Thaad and Josh, did a great job upgrading our 70's era bathroom into a modern bathroom with a sleek and clean appearance. They completed the job on time and each day cleaned up keeping disruption to a minimum. Further, they helped with a small plumbing project that is helping to keep our front gardens in bloom! We highly recommend AACT."
Pamela D on May 2025
Coy Plumbing and Heating delivers top-quality services with a focus on precision and reliability. From repairs and installations to emergency fixes, we ensure your systems will run smoothly and efficiently. ***WE ALSO SPECIALIZE IN BOILER REPAIRS AND INSTALLATION***
"We were very pleased with the communication and the outcome of our project. We have an old home with some older piping. Finding someone that works on steam boilers is tough. When they looked at the install, they explained what needed to happen clearly deand unrstandable."
Vinnie H on November 2024
Coy Plumbing and Heating delivers top-quality services with a focus on precision and reliability. From repairs and installations to emergency fixes, we ensure your systems will run smoothly and efficiently. ***WE ALSO SPECIALIZE IN BOILER REPAIRS AND INSTALLATION***
"We were very pleased with the communication and the outcome of our project. We have an old home with some older piping. Finding someone that works on steam boilers is tough. When they looked at the install, they explained what needed to happen clearly deand unrstandable."
Vinnie H on November 2024
We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!
"Excellent. Ed and his crew are the most responsive and reliable contractors I've worked with in a very long time. They are very up front about what needs to be done and make good suggestions on how to save money. I'll keep hiring them."
Jonathan B on January 2025
We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!
"Excellent. Ed and his crew are the most responsive and reliable contractors I've worked with in a very long time. They are very up front about what needs to be done and make good suggestions on how to save money. I'll keep hiring them."
Jonathan B on January 2025
We specialize in envisioning, designing, and building high quality kitchens and baths. Our remodeling services are simple and flexible - we tailor to your stylistic needs whether they be antique, traditional or contemporary. We are dedicated to fulfilling our promise of customer satisfaction, guaranteed.
"I am so happy that I hired One Eleven Developers and couldn't be more pleased with the outcome of the project. These guys are very knowledgable and experienced. They took pride in their work and worked hard to bring my vision to fruition. They took pride in their work and my personal satisfaction with the job really mattered to them. They listened to my ideas and offered their own suggestions based on their years of experience. In addition to their skill they were a delight to work with, they were respectful, friendly, communicative, they worked hard to keep costs down and kept me informed! I've already recommended them to a friend and hired them for more projects! If you end up choosing One Eleven Dev. you won't regret it!"
Anne S on July 2024
We specialize in envisioning, designing, and building high quality kitchens and baths. Our remodeling services are simple and flexible - we tailor to your stylistic needs whether they be antique, traditional or contemporary. We are dedicated to fulfilling our promise of customer satisfaction, guaranteed.
"I am so happy that I hired One Eleven Developers and couldn't be more pleased with the outcome of the project. These guys are very knowledgable and experienced. They took pride in their work and worked hard to bring my vision to fruition. They took pride in their work and my personal satisfaction with the job really mattered to them. They listened to my ideas and offered their own suggestions based on their years of experience. In addition to their skill they were a delight to work with, they were respectful, friendly, communicative, they worked hard to keep costs down and kept me informed! I've already recommended them to a friend and hired them for more projects! If you end up choosing One Eleven Dev. you won't regret it!"
Anne S on July 2024
We specialize in handyman services, remodeling, hauling, demolition, home repairs, home improvements, and much more. We pride ourselves on the quality work we provide, while delivering great customer service. Please see the services we offer below and call -or- click to schedule a free estimate today!
We specialize in handyman services, remodeling, hauling, demolition, home repairs, home improvements, and much more. We pride ourselves on the quality work we provide, while delivering great customer service. Please see the services we offer below and call -or- click to schedule a free estimate today!
Good work guarantee. I love making our customer's happy
"These guys were absolutely amazing. Thank you guys so much for your hard work and helping us out."
Joseph P on May 2025
Good work guarantee. I love making our customer's happy
"These guys were absolutely amazing. Thank you guys so much for your hard work and helping us out."
Joseph P on May 2025
Virtually diagnose and/or repair your appliances and HVAC units today without anyone stepping foot inside your home! Starting at $45 you can take control of your home appliance repairs via video chat with a certified technician when it’s convenient for you. Make an appointment today on our website. Neli's certified technicians will work with you to conduct either a diagnosis to find out what's wrong or a repair. You will use Neli’s advanced video chat technology during your appointment. Schedule your appointment today at nelihome.com or call us at 833-876-0900!
"They did fine"
Keavon R on May 2025
Virtually diagnose and/or repair your appliances and HVAC units today without anyone stepping foot inside your home! Starting at $45 you can take control of your home appliance repairs via video chat with a certified technician when it’s convenient for you. Make an appointment today on our website. Neli's certified technicians will work with you to conduct either a diagnosis to find out what's wrong or a repair. You will use Neli’s advanced video chat technology during your appointment. Schedule your appointment today at nelihome.com or call us at 833-876-0900!
"They did fine"
Keavon R on May 2025
FAQs for water heater installation and replacement projects in Hillsborough, NH
You'll need an expansion tank if your home has a closed water system, which is standard in newer homes or those with backflow preventers or pressure regulators. Expanding hot water has nowhere to go in closed systems, creating potentially damaging pressure. The expansion tank provides space for this expanded water, protecting your plumbing system and water heater from premature failure. Many local building codes now require expansion tanks, and some water heater warranties may be voided without one.
For a standard 50-gallon water heater, a two-gallon expansion tank is sufficient. This sizing assumes normal household water pressure between 40 and 60 psi. If your home has higher water pressure (60 to 80 psi), consider upgrading to a slightly larger tank for added protection. The expansion tank's purpose is to accommodate the increased volume that occurs when cold water heats up, which is proportional to your water heater's capacity.
Watch for signs like dripping water around the tank, fluctuating water pressure throughout your home, or unusual noises in your plumbing system. A properly functioning expansion tank should feel light when tapped on the bottom—if it feels heavy or waterlogged, the internal bladder has likely failed. Other indicators include frequent triggering of your temperature and pressure relief valve, visible corrosion on the tank, or unexplained increases in your water bill, suggesting hidden leaks.
Most expansion tanks have a service life of five to 10 years, though some may last up to 12 years or more with proper maintenance. Factors affecting lifespan include water quality, system pressure, installation quality, and tank construction. Hard water areas often see shorter lifespans due to mineral buildup. Regular maintenance checks can help identify potential issues before complete failure. When your water heater is due for replacement, it's wise to replace the expansion tank simultaneously, even if it hasn't failed yet.
A 30-gallon water heater needs an expansion tank if your home has a closed plumbing system. The need for an expansion tank is determined by your plumbing system type rather than water heater size. Even smaller water heaters create thermal expansion when heating water. If your home has a backflow preventer, pressure regulator, or check valve on the main water line, you have a closed system that requires an expansion tank. Check your local plumbing codes, as many jurisdictions now mandate expansion tanks regardless of water heater size.
- Plumbing - Multiple Projects
- Shower Pan Install
- Plumbing for a Remodel or Addition - Install
- Plumbing Item Repair
- Water Heater - Repair or Service
- Sink Repair
- Steam Shower - Install
- Faucet Install or Replace
- Walk In Tub - Install or Replace
- Drain Repair
- Shower Install or Replace
- Pipe Repair
- Drain Line Breakage - Camera Locate
- Tankless Water Heater - Install
- Water Main - Install, Replace or Repair
- Sump Pump - Repair or Replace
- Drain Clog or Blockage - Clear
- Sewer Main - Clear
- Faucets, Fixtures and Pipes - Repair or Replace
- Plumbing Item Installation
- Sink Installation
- Pipe Installation
- Faucet Installation
- Gas Piping
- Whirlpool Bathtub Install or Replace
- Plumbing Multi-Item Installation
- Sewer Main - Install, Replace or Repair
- Drain Installation
- Plumbing Multi-item Repair
- Toilet Installation
- Bathtub Install or Replace
- Sump Pump or Interior Foundation Drains - Install
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