When your air conditioner quits on a 95-degree Northern Virginia afternoon, you do not want to wait. R.A. Dobson has kept Sterling-area homes cool since 1975, and our technicians diagnose and fix AC problems fast — often the same day. We show up on time, explain what is wrong in plain language, and give you an honest, upfront price before any work begins.
Whether your system is blowing warm air, making a strange noise, or has stopped altogether, we will get to the bottom of it and get your home comfortable again.
Our certified technicians repair every major make and model, and most issues come down to a handful of common culprits:
• Warm air blowing from the vents
• Weak or no airflow
• The system runs but the house never cools
• Short cycling — turning on and off too often
• Ice on the refrigerant lines or indoor coil
• Water leaking around the indoor unit
• Loud banging, rattling, or squealing
• The AC will not turn on at all
• A sudden spike in your energy bill
Repair or replace? If your system is under 10 years old and well maintained, a repair is almost always the smart call. If it is older, needs frequent fixes, or still uses the phased-out R-22 refrigerant, we will honestly walk you through whether a repair or a new, more efficient system saves you more over time — with zero pressure. If you decide to replace, see our AC installation page.
A few common questions. How fast can you come out? We prioritize no-cooling calls and often offer same-day service. Do you charge for a diagnostic? You get a clear price before any work starts — no surprises. Do you service my brand? Yes — we repair all major brands and are a Carrier Factory Authorized Dealer.
• Family-Owned Since 1975 — three generations serving Sterling and Northern Virginia
• Fast, Often Same-Day Service — we prioritize homes with no cooling
• Honest, Upfront Pricing — a clear price before we start, never a surprise
• Carrier Factory Authorized — factory-trained on the systems we service
• All Makes and Models — our technicians fix every major brand
• 4.8-Star Rated by your Northern Virginia neighbors
Serving Sterling, Ashburn, Leesburg, Herndon, Reston, Chantilly and all of Northern Virginia. Need a new system instead? Visit our AC installation page, or request service now.
