4.9 
21 *The Angi rating for Water Softener Service companies in Olney, 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 Olney, 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 January 19, 2026
Serving Olney, 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 Olney, MD and surrounding areas
Approved
In business since 1993
Free estimates
Emergency services offered
"The Hague Team are experts. Would hire them again. Evaluated my need in 20 minutes or less, then set up a new Water softener install for the next morning. New WS installed in 2.5 hours and Hague loaded the solar salt, and explained every procedure. They help me with making Notes for my reference guide."
+23
Serving Olney, 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 Olney, MD and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Repaired broken waterline and brought our water treatment unit up to snuff. Very satisfied"
+22
Serving Olney, 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 Olney, 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 Olney, 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 Olney, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2008
Free estimates
Credit card accepted
"These Pros were great to work with on the plumbing job within my home. Re: Leaky Faucets The Pros: -Arrived on time. -Addressed the problem. -Did the work in a detailed oriented timely fashion. -Provided suggestions for future care of faucets."
Serving Olney, MD and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"I called Pohlman to replace my Gas water heater. I was very pleased with their service. They were very professional, came out on the same day, took the old tank with them and cleaned up well behind themselves, They finish the job in a timely manner and their price was fair. I would definitely hire them again."
+10
Serving Olney, MD and surrounding areas
Approved
In business since 1991
Free estimates
Emergency services offered
"We had been out of water for 3 days when we found this company and they came out the same day - a Saturday- and got our water running. The price was very reasonable also."
+3
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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