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


The last thing homeowners in Rockville, MD want to experience is an unexpected issue with your HVAC unit. Rest assured, homeowners needing HVAC repair in Rockville are in good hands with John C. Flood. With more than 115 years of experience in the Mid-Atlantic region, no other HVAC companies in Rockville, MD match our ability to complete projects quickly and efficiently. 

Your home’s HVAC system is more than just a source of comfort. The Mid-Atlantic region experiences humid summers and cold winters – making your HVAC unit work hard all year round. Your HVAC system may require repair due to lack of routine maintenance, or occasional anomalies. Trust John C. Flood for all of your HVAC repair in Rockville. 

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

HVAC Repairs or Replacement

When your HVAC unit is down, it can mean an uncomfortable environment for your family. It could even be dangerous during seasonal peaks. If you try to adjust your thermostat and get no reply, you know you’re in need of fast HVAC repair. Rockville residents can trust the decades of expertise at John C. Flood. 

A downed HVAC system can cause a litany of problems throughout your home – including frozen pipes in the winter or poor air quality and mold growth in the humid summer months. We offer advice on when to repair a unit – or if a replacement is necessary. 

Our heating repair services in Rockville include:

  • HVAC air filter replacement
  • Digital thermostat calibration and repair
  • Duct sealing and repair
  • Examine heat exchanger for signs of corrosion
  • Evaluate blower and clean interior and exterior components
  • Assess intake vents for blockages
  • Inspect burner for proper ignition
  • Lubricate heating system components to reduce friction. 

Our unrivaled diagnostic equipment helps us identify an issue quickly so repairing your HVAC system is as little of a hassle as possible. 

Our air conditioning repair services in Rockville can quickly identify:

  • Potential leaks in the system
  • Worn electrical components
  • Corrosion on coils, connections, and terminals
  • Poor drainage that impacts efficiency
  • Improper installation that can impact the thermostat sensor. 

The trained eyes of our service team can give a thorough assessment of your air conditioning unit and identify problems. HVAC repair in Rockville, MD has never been easier. 

HVAC Maintenance Services

Maintaining your home’s air conditioner and heating system regularly can extend longevity and prevent costly breakdowns. 

In addition to avoiding repairs, properly maintained HVAC systems run more efficiently, saving you money on energy bills and costly repairs. When a machine is working too hard to deliver heat or cool air, efficiency suffers and your unit wears down faster. 

When searching for HVAC companies in Rockville, MD, you’ll feel peace of mind knowing that John C. Flood won’t recommend a costly unit replacement if it’s not needed. We focus first on maintenance practices that extend the life of your existing unit. 

HVAC maintenance services from John C. Flood include: 

  • Inspection and evaluation of the HVAC unit
  • General maintenance and cleaning of the interior and exterior components
  • Leak detection and repair
  • Replacement of malfunctioning or broken parts
  • Coil cleaning and maintenance
  • Complete a thorough cleaning of the unit's filters and case
  • Cleaning and maintenance of AC drain tubes

In addition to the routine checkpoints mentioned above, our expert team will also check all common components and advise you on any that are showing wear and may become a problem in the future. If we suspect that replacement parts would help your HVAC unit run more efficiently, we’ll make those recommendations. 

Quickly fixing HVAC issues is important, but system maintenance keeps your HVAC unit running at peak condition season after season. You can rely on cutting-edge technology and expertise on the John C. Flood team. We know how to repair and service in HVAC in Rockville because we’ve been doing it for decades.

Get an HVAC Quote from John C. Flood

Whether you need HVAC repair in Rockville, or seasonal maintenance, John C. Flood can handle the job. Our team of expert technicians works at a flat-rate price, so our customers are never blindsided by extra fees.

Untimely HVAC repair can not only make your home uncomfortable – but can also dampen other, more fun, planned expenses. Sometimes, HVAC repair can come at a high price depending on the issues. Unforeseen bills for repairs or upgrades are part of owning a home, but we want to make them as painless as possible. Learn more about HVAC financing options with John C. Flood. 

With more than 115 years of expertise and the leading HVAC company in Rockville, MD, we’ll take care of your air conditioning repair or service your HVAC system quickly and professionally. Call (703) 752-1251 or schedule HVAC service now.

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