Serving DC, VA & MD
Text or Call! (703) 752-1251
Regular Rates 7 Days A Week
Quick & Effective Services

Backed by 100+ Years of Service


In southern Maryland, homeowners rely on their HVAC units to keep their homes fresh and cool in the summer and warm and comfortable in the winter. There's no feeling more concerning than turning your thermostat and having the air coming from the vents not respond. When you need a high quality HVAC company in Gaithersburg, for repair, service, or replacement, contact John C. Flood.

Schedule Your Service
If you are looking for an HVAC contractor, plumber, electrician, or remodeling crew in the Maryland, Northern Virginia, or metro D.C. regions, trust John C. Flood to take care of the job.
  • “My technician Hudson was personable and willing to explain what he was doing and why.”

    Elle E.
  • “Meet with Joe who quoted me the initial price. Honestly not the cheapest quote that I received but his communication and the way we interacted really sealed the deal.”

    Bebe T.
  • “Used John Flood services to install Water Heater. Had an excellent experience. The technician was on-time, friendly, and professional.”

    Francine V.
  • “I cannot speak highly enough of John C. Flood and specifically Dale Jr. He has repaired my system twice in a moment of crisis and has gone above and beyond to make sure we are happy with the outcome.”

    Mary D.
  • “We have the complete coverage service and are very please with it. They have been extremely reliable.”

    David Allison

Regular HVAC Service Helps You Avoid Costly Repair Bills

An HVAC unit is an expensive piece of machinery that you rely on from day to day. Just like your car, or anything else that you need in your life, it deserves regular maintenance so that it can keep working for you as long as possible. John C. Flood, is proud to provide Gaithersburg residents with HVAC maintenance and service to keep their units functioning efficiently. From Crown Farm to Casey East and West, we're here to help you avoid trouble down the road.

When you call John C. Flood for HVAC maintenance, we'll:

  • Clean components and case to remove dust and debris from normal operation
  • Inspect components to check for signs of wear or evidence that something might be nearing the end of its normal mechanical lifespan
  • Advise you of any part replacement that might extend the life of your HVAC
  • Keep you apprised of energy efficient upgrades we can make to your HVAC to save you money on your monthly utility bills

Breakdowns Happen; Call Us When You Need Repairs

Even the most well maintained HVAC units can unexpectedly fail. When your HVAC isn't behaving the way you'd expect, call John C. Flood to get it back in working order. With more than one hundred years of experience in the Gaithersburg area, we're ready to look at the unit you have and assess whether it can be repaired, or will need to be replaced. We will:

  • Thoroughly assess the overall health of your HVAC unit
  • Advise you on any components that need replacing
  • Suggest replacement, energy efficient units that can save you money on your bills
  • Complete installations and replacements quickly

At John C. Flood, we know that you want to get back to the life where your HVAC unit functions without you thinking about it. When you need a reliable HVAC company in Gaithersburg, contact John C. Flood for the service or maintenance that will restore your home to order. Call us today to schedule the service you need.

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