Get matched with top tankless water heater installers in Gaithersburg, MD

"We have depended on Fred and Son for expert plumbing help for years now. Today it was Joe who did the installation, and we couldn't be happier with his work. Equally important, we appreciate how friendly, considerate, and professional he was throughout his visit. We will continue to have Fred and Joe on speed dial!"

"Excellent. Two separate teams came; one for AC and Furnace; second for Tankless hot water heater; Minor toilet repair also done at no extra charge, including a follow up service call to install new toilet flush handle, also at no charge."

"Brad was great explaining everything from the work that needed done to the heat pump units themselves. I liked that he called prior to his arrival with an ETA . Did do a free estimate with us. We decided not to go with Tristate in the end and went with a small local business instead but Brad was super friendly and helpful."

"Kap was extremely responsive on the phone to give a quotation with a very compettive price. He arrived on time, and worked effectively to finish and do everything in a professional way. The work quality was excellent and very clean. We are realy happy with the water heater he installed."

"Just started working with Markool this summer and they have been fantastic! When I need service, they are so fast and every person we have interacted with has been polite, knowledgeable and personable. We unexpectedly needed to replace our system during a heat wave and they were super. So responsive and quick. I would highly recommend Markool for all of your HVAC needs!"

"I had to replace a water heater quickly. Gave me a competitive quote with a water heater with desirable specs within a day and scheduled me the day after. Technician was knowledgeable and efficiently performed the work. Water heater performs just fine. Cleaned up workspace and took a few mins to walk through water heater and maintenance after."

"Mr. Rema arrived on time Sunday morning to update my water heater. He installed an expansion tank, duct work and replacing the piping to the thermostat on the water heater. He did an excellent job and took his time. Mr. Rema also went to the local hardware store twice to pick up the material that was needed. The only reason I didn't give him an A was because he quoted me a price at the beginning and then went done on the price and then tried to go back up to the original quoted price. After talking with him he decided to keep the price at the lower amount that he quoted."

"Same Day Service-Wow! Well, to my surprise, I found a leak under my hot water heater late Saturday evening, 11/28. In a panic, I called three contractors: the first contractor gave me an appointment for Tuesday, 12/1; I’m still waiting to hear from the second contractor; the third contractor sent me an email with instructions to attach pictures of pipes, hot water heater, the surrounding area where the pipes exit, and label specs. All of this for a free estimate! I slept on it and decided to keep searching because I wanted “instant gratification-job done”! Sunday morning, 11/29, I found “Day and Night Plumber, LLC” 8:20a. The receptionist gave me an appointment for 11a. The technician, Mr. Lal Zaua, was on time with his mask and gloves! He introduced himself, and we exchanged greetings, then went to the basement. He diagnosed the problem. He explained the types of water heaters and gave me pricing, which included a discount. I asked him if he could do it today? He responded yes and “went to work”! To cut down on foot traffic and less contact [because of COVID-19], he always used the back door. When completed, he tested the water, explained the temp controls, and where to turn the water off in case of an emergency. Everything was complete, and he departed at 3p. I am perfectly satisfied! Mr. Lal Zaua was responsive to my needs, treated me and my home with respect, and made sure that I understood everything before he started the job. Thank you so much!"

"I’m back again to write another stellar review for GAC. Last year they replaced our HVAC system; this year we circled back and had them install a home generator. This was a long and drawn out process due to the various approvals needed from Montgomery County as well as coordination with Washington Gas (which ended up not just being a simple sign off but necessitating an additional, expensive upgrade to the gas line from the street to our home). Nevertheless, GAC did a fantastic job shepherding this process over the 6+ months of waiting on stakeholders, and they were also maximally accommodating to our family’s significant constraints on time and availability (due to health concerns related to a medically fragile family member). A special kudos to Sandy M, GAC’s master electrician, who took it on personally to ensure we were taken care of all throughout this process, going above and beyond with phone calls, text messages, personal visits, etc. on behalf of my family, I want to thank GAC and am giving top marks across the board for this effort which was complex , lengthy, and ultimately successful."

"The assignment went well. The tech (Stacy) was very knowledge and explain to me the in and out of what might be the issue with the unit. Once the issue was diagnose, Stacy got right to work and resolved the problem within no time. My house is now cooling and ready for the our next HEAT wave. I highly recommend him and HPC services. They did and excellent job attending to my needs and was pretty reasonable in their pricing......Thanks guys!!!!!"