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Water heater installers and replacers in Rockville
Pohlman Plumbing is a local, family-owned and -operated full-service plumbing and HVAC company serving the Baltimore metro area. Founded in 2008, our professional and friendly customer service plus our top-notch skills have made us one of the most trusted local plumbers in Baltimore. When you choose to work with Pohlman Plumbing, you can have peace of mind knowing we always stand by the Pohlman Promise: fast service, at a fair price, and done right the first time.
"The gentleman that work this business go above and beyond to make the best suggestions for they work required. This is the second time I have hired them. My sub pump went after and more rain was coming they came out with 2 hours to fix the problem. Extremely professional man. I will be er use any other plumbing business other than Pohlman. I highly recommend if you have a plumping issue."
Georgette T on January 2024
Pohlman Plumbing is a local, family-owned and -operated full-service plumbing and HVAC company serving the Baltimore metro area. Founded in 2008, our professional and friendly customer service plus our top-notch skills have made us one of the most trusted local plumbers in Baltimore. When you choose to work with Pohlman Plumbing, you can have peace of mind knowing we always stand by the Pohlman Promise: fast service, at a fair price, and done right the first time.
"The gentleman that work this business go above and beyond to make the best suggestions for they work required. This is the second time I have hired them. My sub pump went after and more rain was coming they came out with 2 hours to fix the problem. Extremely professional man. I will be er use any other plumbing business other than Pohlman. I highly recommend if you have a plumping issue."
Georgette T on January 2024
Modern Plumbing Systems strives to be your best option when it comes to plumbing service. It is our business to deliver to your home a LICENSED, PROFESSIONAL PLUMBER that makes your service experience the best it can be. All of our technicians are highly trained, with a minimum of 10 years plumbing experience. Please call any time to speak with a certified professional plumber. We are standing by to help you now.
"Great customer service, fast response and very reasonable price. Will definitely use them again."
John Y on May 2025
Modern Plumbing Systems strives to be your best option when it comes to plumbing service. It is our business to deliver to your home a LICENSED, PROFESSIONAL PLUMBER that makes your service experience the best it can be. All of our technicians are highly trained, with a minimum of 10 years plumbing experience. Please call any time to speak with a certified professional plumber. We are standing by to help you now.
"Great customer service, fast response and very reasonable price. Will definitely use them again."
John Y on May 2025
Atlantic Blue Water Services provides the highest quality and most specialized home water treatment systems in today's market. We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Don't settle for anything less than the best for your home or business. Experience the difference with Atlantic Blue Water Services. Contact us now for a free, no-obligation water test and discover why we are the preferred choice for clean water solutions in Maryland. Our experienced team is ready to answer your questions and guide you toward the best water solution for your home or business. We invite you to trust us with your water needs! Water Testing - Water Treatment - Water Softening - Well Water - City Water - Well Pumps - Tanks - Drinking Systems - Reverse Osmosis - Residential & Commercial
"These guys - wow. Even though my address was outside their range for same-day service, they came out anyway (and quickly). They quickly diagnosed the issue and offered solutions & recommendations. Very prompt, very professional, will absolutely be using them going forward. A"
Don P on September 2024
Atlantic Blue Water Services provides the highest quality and most specialized home water treatment systems in today's market. We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Don't settle for anything less than the best for your home or business. Experience the difference with Atlantic Blue Water Services. Contact us now for a free, no-obligation water test and discover why we are the preferred choice for clean water solutions in Maryland. Our experienced team is ready to answer your questions and guide you toward the best water solution for your home or business. We invite you to trust us with your water needs! Water Testing - Water Treatment - Water Softening - Well Water - City Water - Well Pumps - Tanks - Drinking Systems - Reverse Osmosis - Residential & Commercial
"These guys - wow. Even though my address was outside their range for same-day service, they came out anyway (and quickly). They quickly diagnosed the issue and offered solutions & recommendations. Very prompt, very professional, will absolutely be using them going forward. A"
Don P on September 2024
We are in the industry providing plumbing and fire protection systems to residents and businesses in and around Maryland for over 22 years. During all this time we were working to improve customer satisfaction before, during and after the service based on our agile management, trained team and quality materials. Now, years of experience in the market allows us to guarantee that our work will be of the highest quality.
"Family Fire Service did a great job replacing my water heater! They were quick, attentive, and thorough. Excellent work! "
Hassan C on May 2025
We are in the industry providing plumbing and fire protection systems to residents and businesses in and around Maryland for over 22 years. During all this time we were working to improve customer satisfaction before, during and after the service based on our agile management, trained team and quality materials. Now, years of experience in the market allows us to guarantee that our work will be of the highest quality.
"Family Fire Service did a great job replacing my water heater! They were quick, attentive, and thorough. Excellent work! "
Hassan C on May 2025
Washington Home Doctors, Inc. T/A HotWaterExpress.com established in 1986 is a locally and family owned, fully licensed one stop shop for most of your home repair needs. We specialize in residential and commercial Full Water Heater Service! Other areas of expertise are General Plumbing, Heating & Air conditioning, and home improvements. Washington Home Doctors holds Home Improvement Contractor Licenses for Washington D.C. & Maryland State, a Master Plumbing License for W.S.S.C. & Maryland and Virginia jurisdictions, an HVAC License and we are a certified MBE (Minority Business Enterprise) company. We would love an opportunity to be your go to home repair services provider.
"They were very knowledgeable and courteous with pleasant personalities. They also were able to give me a quote over the phone. They did an excellent job at a great rate and were very prompt. I definitely would use them again!"
Cheryll L on May 2025
Washington Home Doctors, Inc. T/A HotWaterExpress.com established in 1986 is a locally and family owned, fully licensed one stop shop for most of your home repair needs. We specialize in residential and commercial Full Water Heater Service! Other areas of expertise are General Plumbing, Heating & Air conditioning, and home improvements. Washington Home Doctors holds Home Improvement Contractor Licenses for Washington D.C. & Maryland State, a Master Plumbing License for W.S.S.C. & Maryland and Virginia jurisdictions, an HVAC License and we are a certified MBE (Minority Business Enterprise) company. We would love an opportunity to be your go to home repair services provider.
"They were very knowledgeable and courteous with pleasant personalities. They also were able to give me a quote over the phone. They did an excellent job at a great rate and were very prompt. I definitely would use them again!"
Cheryll L on May 2025
Horizon Services (MD), LLC, is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizon Services (MD), LLC, remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners.
Horizon Services (MD), LLC, is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizon Services (MD), LLC, remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners.
Brian B Quick s a well established company in the Washington DC/Baltimore region. We offer over 100 years of experience total on our Team. Our business approach is to make clients lives better; one solution at a time. We have over 50 5 star reviews! Our focus is customer service as well as professionalism. We pride ourselves on integrity at all times. We are a 4th generation Master Plumbing company! No other company can make that claim in the DC Metro area! If tired of the lying; try Brian. Call us for your next job; you will not be disappointed.
"fantastic ! did a great job polite"
Jim I on September 2022
Brian B Quick s a well established company in the Washington DC/Baltimore region. We offer over 100 years of experience total on our Team. Our business approach is to make clients lives better; one solution at a time. We have over 50 5 star reviews! Our focus is customer service as well as professionalism. We pride ourselves on integrity at all times. We are a 4th generation Master Plumbing company! No other company can make that claim in the DC Metro area! If tired of the lying; try Brian. Call us for your next job; you will not be disappointed.
"fantastic ! did a great job polite"
Jim I on September 2022
Remodel Now is a premier bathroom and kitchen home remodeling company serving the DMV area. With 23 years of experience in the industry, our team of skilled professionals is dedicated to delivering high-quality craftsmanship and exceptional customer service. We understand that your home is a reflection of your style and personality. That's why we work closely with each client to bring their vision to life. Whether you're looking to upgrade your bathroom or create the kitchen of your dreams, our team will guide you through every step of the process, from design to installation. Trust Remodel Now with your next bathroom, kitchen, or basement renovation project. Contact us today for a consultation and let us help you to Remodel Now!
"Remodel now did a fantastic job with my bathroom. From Reggie who can an presented the plan. I like it when a person knows their job. The receptionist Misty so sweet handle you with special care. The workers can in very professional, My bathroom looks like it is straight out of magazine . I am soooo. Happy with my new bathroom"
Florence M on April 2024
Remodel Now is a premier bathroom and kitchen home remodeling company serving the DMV area. With 23 years of experience in the industry, our team of skilled professionals is dedicated to delivering high-quality craftsmanship and exceptional customer service. We understand that your home is a reflection of your style and personality. That's why we work closely with each client to bring their vision to life. Whether you're looking to upgrade your bathroom or create the kitchen of your dreams, our team will guide you through every step of the process, from design to installation. Trust Remodel Now with your next bathroom, kitchen, or basement renovation project. Contact us today for a consultation and let us help you to Remodel Now!
"Remodel now did a fantastic job with my bathroom. From Reggie who can an presented the plan. I like it when a person knows their job. The receptionist Misty so sweet handle you with special care. The workers can in very professional, My bathroom looks like it is straight out of magazine . I am soooo. Happy with my new bathroom"
Florence M on April 2024
At Titan Builders, we bring over 40 years of expertise to high-end bathroom, kitchen, and interior renovations. Committed to clear communication and excellent service, we deliver outstanding craftsmanship with seamless results. Our comprehensive 2-year warranty guarantees quality that stands the test of time, providing you with peace of mind. We take pride in delivering superior results while building strong client relationships. Contact us today to start your next home renovation with confidence.
"Kevin and Mancho were wonderful to work with. We had a particularly tricky bathroom renovation that required the subfloor to be redone and joist reinforcement. From the beginning, Kevin was responsive to our many questions and rescoped/priced the contract a couple times until we were satisfied with it. We really appreciated how communicative they were throughout the process, too. Kevin would fill us in on the day’s progress before heading out each day and flag any decisions that needed to be made in advance. When we noted any areas that required retouching, Kevin and Mancho were open to the feedback and made sure to address it. We would be happy to work with them again and are in love with our new bathroom!"
Nikita M on January 2025
At Titan Builders, we bring over 40 years of expertise to high-end bathroom, kitchen, and interior renovations. Committed to clear communication and excellent service, we deliver outstanding craftsmanship with seamless results. Our comprehensive 2-year warranty guarantees quality that stands the test of time, providing you with peace of mind. We take pride in delivering superior results while building strong client relationships. Contact us today to start your next home renovation with confidence.
"Kevin and Mancho were wonderful to work with. We had a particularly tricky bathroom renovation that required the subfloor to be redone and joist reinforcement. From the beginning, Kevin was responsive to our many questions and rescoped/priced the contract a couple times until we were satisfied with it. We really appreciated how communicative they were throughout the process, too. Kevin would fill us in on the day’s progress before heading out each day and flag any decisions that needed to be made in advance. When we noted any areas that required retouching, Kevin and Mancho were open to the feedback and made sure to address it. We would be happy to work with them again and are in love with our new bathroom!"
Nikita M on January 2025
Here at Best Homes, our company is based on the belief that our customers' satisfaction is of the utmost importance. Our team is driven to meet your needs with professionalism, creativity, and efficiency. Established 2005. Owner: Jonathan Perez Office Manager: Paige Marie Campbell Project Manager: Jefry Perez
"Basement Project We absolutely love our new basement! I was very nervous when selecting the contractor for this job. I interviewed three contractors for the job, all seem very decent, but what set Best Home apart was Jeff Segovia. He designed the whole layout of our basement (we love it) and oversaw the entire project from beginning to end. The construction crews were very polite and friendly. Best Home did an excellent job and very flexible with many changes I had and they completed the job on time (took 3 months and exactly 1 week)which was amazing. I am actually hiring them again for additional projects. I highly recommend Best Homes!"
Jesita B on August 2024
Here at Best Homes, our company is based on the belief that our customers' satisfaction is of the utmost importance. Our team is driven to meet your needs with professionalism, creativity, and efficiency. Established 2005. Owner: Jonathan Perez Office Manager: Paige Marie Campbell Project Manager: Jefry Perez
"Basement Project We absolutely love our new basement! I was very nervous when selecting the contractor for this job. I interviewed three contractors for the job, all seem very decent, but what set Best Home apart was Jeff Segovia. He designed the whole layout of our basement (we love it) and oversaw the entire project from beginning to end. The construction crews were very polite and friendly. Best Home did an excellent job and very flexible with many changes I had and they completed the job on time (took 3 months and exactly 1 week)which was amazing. I am actually hiring them again for additional projects. I highly recommend Best Homes!"
Jesita B on August 2024
FAQs for water heater installation and replacement projects in Rockville, MD
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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