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

"Jimmy Gusky HVAC is truly as good as it gets. One of our AC units went down and through the warranty company found our way to Jimmy Gusky himself. Although out of their territory, Jimmy was willing to make the extra trip to diagnose the problem. He was very responsive to get our initial service call scheduled and determined the unit needed to be replaced, and we all know these units usually decide to break down only when pushed to the limit in the hottest summer months and we need AC the most. He did the legwork to get the warranty company to honor the recommendation and as you can see from the attached photo put in a much more substantial unit that is doing a fabulous job cooling the home. Add to that he actually had the unit and scheduled the install even before the warranty company approved the swap out. I that isn't one of the greatest examples of outstanding customer service and going above and beyond to exceed expectations, I don't know what is. Big thanks to Jimmy and team for their commitment to excellence!"

"Recently used Mahon Plumbing for various plumbing needs around my house. As a new homeowner you can be skeptical on what’s behind your walls or in this case pipes. Mahon did an initial sewer line inspection and called them back to swap out toilets and install natural gas in my backyard for a grill and fire table. They were professional, honest, and extremely knowledgeable about all phases of my projects. I would recommend Mahon Plumbing for all of your plumbing needs!"

"Turned on the AC this morning to find out was blowing hot air, called up a few different companies who wanted minimum 100 bucks to come out blah blah blah, called up Markool and got connected with a technician. The technician helped me troubleshoot the issue, and have me a quick fix that will last until they make it out tomorrow to do the permanent fix. I'll be using them for all my AC needs in the future!"

"Rob O'Donnell came in clutch for us when we found ourselves in a pinch doing a job out of our normal service area for a customer who had water damage to their home. It was after 4:00pm on a Friday afternoon and we needed to find someone to disconnect a gas stove so we could finish installation on Saturday. Needless to say, we were having trouble finding anyone who could help us out with such short notice. After leaving a message with O'Donnell's Plumbing we got a call shortly thereafter from Rob, who was willing to go out on Saturday morning to disconnect the gas line for us before another job he already had scheduled for the day. He also returned very promptly to get everything hooked back up. -- furthermore he was able to send an invoice by email and we were able to pay electronically! Very convenient and also eliminated the need to bother with mailing a check. -- Highly recommend O'Donnell's Plumbing!"

"My water heater started leaking on a Sunday. I reached out to Family Fire Service and they responded immediately. They had a new water heater out to my house the next day and installed in a few hours. The supervisor and the tech worked seamlessly to have us up and running. They provided quality service and at a very competitive price. I highly recommend Family Fire Service and Plumbing. KC"

"Hello, I am requesting assistance from a licensed plumber/gas fitter for gas service restoration at my property: 1239 Maple Ave. Baltimore, MD 21227 BGE has determined that the prior gas service was abandoned and is now processing the project as a new gas service line and exterior meter installation. BGE will be meeting me on-site on Tuesday, June 9, 2026, at 9:00 AM to review and approve the proposed exterior meter location. I need a licensed plumber/gas fitter who can either attend that BGE site visit or come immediately afterward to evaluate the work required on the customer side of the gas system. The scope of work includes: - Inspecting the existing gas piping to determine whether any portion can be safely reused; - Extending, repairing, or replacing internal gas piping as needed; - Establishing the new customer-side gas connection point for the exterior BGE meter; - Pulling the required gas/plumbing permit; - Performing the required pressure test; - Coordinating the requir"

"Came out in the middle of a flash flood warning and rain storm. Remediated the problem at an affordable price. The project required further work at a later date."

"BB&B removed a faulty garbage disposal and installed a new one. The plumber, at my request, purchased the new unit on my behalf and selected one appropriate for the job without gouging me on the price. The work was done quickly and neatly and I was quite satisfied; I will certainly call them in the future."

"Very customer service oriented, very knowledgeable, went beyond and above compared to other plumbers he had spoken with."

"It went well. The install was done in approximately 3 hours; knowledgeable technicians. Our drinking water tastes amazing and resolved hard water problem."