Thermostat and Smart Controls in the Greater DC Area
Get expert installation and repair for thermostats and smart HVAC controls today. John C. Flood of VA has served local homes since 1904, and all our HVAC technicians are NATE certified. We cover the Greater DC area, including Washington, DC, Arlington, and Alexandria. Homeowners trust our 4.8 rating from 4,898 reviews and our clear, flat-rate pricing. Ready to upgrade your comfort and efficiency? Schedule your thermostat service online or call our team for fast help.
Why Choose Us
NATE-certified techsAll HVAC technicians are NATE Certified.
Serving since 1904Local experience across DC, MD, and Northern VA since 1904.
A+ BBB ratingA+ rating from the Better Business Bureau.
Clear, flat-rate pricingUpfront, flat-rate pricing with financing options.
Extended hours & 24/7Longer service hours at regular rates and 24/7 emergency service.
What Our Customers Say
quality
"He replaced the thermostat. Excellent attention to detail!"
professionalism
"I got a new state of the art thermostat as well."
expertise
"Very helpful assistance in the use of our high functionality electronic thermostat."
Where We Work
What areas do you serve for thermostat and smart controls?
We serve the Greater Washington DC Area, including Washington, DC, Arlington, and Alexandria. See the full list of communities we cover below.
Greater Washington DC Area
Washington, DCArlington, VAAlexandria, VA
Complete Service Area:
Alexandria, VAArlington, VAFairfax, VAFalls Church, VAManassas, VASpringfield, VAReston, VASterling, VAVienna, VAWoodbridge, VAAshburn, VACentreville, VAChantilly, VADumfries, VAHerndon, VAMcLean, VAAnnandale, VABristow, VABurke, VACatharpin, VAClifton, VADunn Loring, VAFairfax Station, VAFort Belvoir, VAFort Myer, VAGainesville, VAGreat Falls, VALorton, VANokesville, VAOakton, VAOccoquan, VAQuantico, VATriangle, VASilver Spring, MDBethesda, MDHyattsville, MDRockville, MDGaithersburg, MDWaldorf, MDBowie, MDCollege Park, MDGreenbelt, MDUpper Marlboro, MDAccokeek, MDAndrews Air Force Base, MDBeltsville, MDBladensburg, MDBrandywine, MDBrentwood, MDBryans Road, MDBryantown, MDBurtonsville, MDCabin John, MDCapitol Heights, MDCheltenham, MDChevy Chase, MDClinton, MDDerwood, MDDistrict Heights, MDFort Washington, MDGarrett Park, MDGermantown, MDGlen Echo, MDGlenn Dale, MDIndian Head, MDKensington, MDLa Plata, MDLanham, MDLaurel, MDMarbury, MDMount Rainier, MDOxon Hill, MDPomfret, MDPort Tobacco, MDPotomac, MDRiverdale, MDSuitland, MDTakoma Park, MDTemple Hills, MDWashington Grove, MDWelcome, MDWhite Plains, MDWashington, DCNaval Anacost Annex, DCWashington Navy Yard, DC