4.6 
31 *The Angi rating for Water Softener Service companies in Gaithersburg, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Softener Service needs.
*The HomeAdvisor rating for Water Softener Service companies in Gaithersburg, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Softener Service needs.
Last update on July 13, 2025
Serving Gaithersburg, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Warranties offered
"Scott was super informative and helpful in showing us the difference in the water softener systems. We love that we now have the added alkaline water â on tap!â"
+1
Serving Gaithersburg, MD and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"The service person was very professional. We recently purchased home. No manuals for water system anywhere to b found. The service person took his time and clearly explained everything. Filters were then changed. He clearly knew what he was doing."
+23
Serving Gaithersburg, MD and surrounding areas
Approved
In business since 1993
Free estimates
Warranties offered
"Have a whole home water filter (Aquasana) that was already installed. Was happy to find an outfit that was comfortable working with a system they didn't install. I was really impressed with Hague. Herminio arrived right on time and quickly understood what he had to do. He quickly and carefully got the new water softening tanks primed, flushed, and installed. He took care to check for leaks. Will definitely hire Hague again."
+19
Serving Gaithersburg, MD and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"They replaced my leaking Poly water line from the street to the house with a new copper line. They tried to pull the new line through but were unsuccessful so they eventually had to trench through my yard to install the new copper line. In order to do this, they did have to cut through my concrete driveway which I had to get patched. After some adjustments were made with the new water pressure valve the system works great."
+22
Serving Gaithersburg, MD and surrounding areas
Approved (Corporate)
In business since 2020
Free estimates
Warranties offered
"The installer Dustin was great! He was on time and professional. The installation was completed in about four hours as stated the job would be. I am happy with my water softener system and so is my skin!"
+44
Serving Gaithersburg, MD and surrounding areas
Approved
In business since 2002
Free estimates
Emergency services offered
"Fantastic company. We had a water heater installed. The installer was fantastic. He was on time, professional and extremely knowledgeable. We will use them again. If I could give them 10 stars I would.."
+31
Serving Gaithersburg, MD and surrounding areas
Approved
In business since 1968
Free estimates
Emergency services offered
"They replaced and installed a new water outlet for my refrigerator water connection. It was fast and the work was done well."
Serving Gaithersburg, MD and surrounding areas
Approved
In business since 1993
Credit card accepted
Customers say: Quick response
Chesapeake Water Treatment, Inc., in business since 1993, offers complete environmental systems. Our water and air filtration system carry a lifetime warranty, you can even take it with you move.\nPlease give us a call today. Moreover, you can call to arrange a free and home estimate,
Serving Gaithersburg, MD and surrounding areas
Approved
In business since 2019
Free estimates
Credit card accepted
Welcome to Markool Heating & Cooling. We proudly provide the highest quality of service and craftsmanship for each aspect of your project. Our depth of knowledge and experience solidify our belief that customer service stands as the highest priority. We eagerly look forward to working with you and making your vision a reality. Give us a call, text, or email today, and let us get started!
Serving Gaithersburg, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Credit card accepted
"very courteous; the original project was to fix leaks from the toilet; I asked the team if they could also fix a water connection to outside faucet, they agreed after checking with the office. So all in all, great technicians highly recommended"
From average costs to expert advice, get all the answers you need to get your job done.
How much a water softener costs in Washington, D.C., depends on your home’s size and the system’s type and capacity. Our expert guide explores all the price factors.
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