Donmar Heating, Cooling & Plumbing | Local Plumbing Service in Rockville, MD

Our flat-rate pricing covers all labor and parts needed for the specific repair, with no hidden fees or surprise overtime charges. This straightforward approach means you know the total cost before we begin any work, whether it's for a water heater repair, fixing a leak, or addressing a clogged toilet. We've provided this transparent service to Maryland and Virginia homeowners since 1990.

We commonly address pipe corrosion and water heater sediment buildup, which are frequent issues in our area. Our technicians can perform a thorough plumbing inspection to assess the condition of your pipes and water heater. For sediment, we can flush your heater to improve efficiency and lifespan, and for significant corrosion, we offer professional pipe repair or replacement to prevent leaks and water damage.

With over three decades of experience, our NATE-certified technicians provide expert installation for lasting comfort and efficiency. As a Carrier Factory Authorized Dealer, we offer high-quality, energy-efficient systems and ensure they are installed to factory specifications for optimal performance. We guide you through selecting the right system for your Rockville home and handle the entire process from start to finish.