Air Conditioning Services in Centreville, VA

AC Repair, Installation, and Maintenance for Centreville and Fairfax County

Most homes in Centreville were built in the late 1980s and early 1990s. A lot of the AC systems installed during the original build have already been replaced once, and many of those second-generation systems are now aging out — working harder each summer on aging components, running longer cycles to hit the same temperature they reached easily a few years ago. This area averages more than 18 humid or oppressive days in July alone. A system running below capacity during that stretch isn't just uncomfortable. It's burning through its remaining service life faster than it needs to.

Reddick & Sons Inc. handles AC repair, installation, and maintenance across Centreville and Fairfax County. Danny Reddick holds a master HVAC technician license and has spent over 20 years working on cooling systems in Northern Virginia, long enough to recognize the failure patterns that repeat in homes of this age and this climate. We earned the 2023 HVAC Contractor of the Year from the PHCC National Association, and Northern Virginia Magazine recognized us as Best Home Experts in 2023 and 2025.

Contact us at (703) 348-9881 to schedule AC service in Centreville. Same-day appointments are available, subject to scheduling, and you'll receive your technician's bio before they arrive.

What We Check When Cooling Performance Falls Off

An AC system is more than the unit sitting outside. It includes the air handler, the indoor unit that moves conditioned air through your home's ductwork. It includes the evaporator coil, which sits inside the air handler and does the actual work of removing heat and humidity from the air before it circulates. It includes the refrigerant lines, the electrical connections, and the distribution system that gets the cooled air where it needs to go. 

When a system stops cooling effectively, the cause is often not where the homeowner expects it to be — and a repair that addresses only the obvious symptom without checking the full system frequently leads to another service call a few weeks later.

Our technicians evaluate every part of the system during a service call or full assessment:

• Outdoor unit and refrigerant
• Air handler
• Evaporator coil
• Ductwork and airflow

Getting the diagnosis right the first time is faster and less expensive than treating the symptom and coming back for the cause.

Repair or Replace: How We Think Through That Call

When a homeowner calls about an AC that stopped working, the repair-or-replace question comes down to the specific situation, not a general rule. A failed capacitor on a six-year-old unit is a repair. A failed compressor on a unit that's been running for 22 years in a home that's expanded its cooling load over that period is a different conversation. The cost of the repair against the system's remaining useful life, the efficiency gains a newer unit would deliver, and whether the failure pattern suggests more repairs are coming are all part of how we assess the situation.

We don't push replacement when a repair makes sense. Danny's stated standard, repeated in customer reviews, is to tell customers what's true and let them decide. Before any work starts, you receive a written estimate with the agreed-upon price. If replacing the system is the right call financially, we say so and explain why. If a repair extends the system's useful life at a cost that makes sense, we tell you that instead.

When the assessment does point toward a new system, we size it for your home's actual cooling load — the square footage, the orientation, the window area, and the conditions in your part of Fairfax County — not for what was in the original system slot.

What a Maintenance Visit Covers

Centreville's summers put AC systems under sustained load in a way that general manufacturer maintenance recommendations don't fully account for. A unit running through weeks of humid, mid-80s temperatures is operating near its design limits for an extended stretch. The parts that tend to fail under that kind of demand don't signal a problem in advance. A capacitor worn down from years of heavy-season cycling, refrigerant below spec from a slow leak, a dirty evaporator coil that's gradually losing efficiency — none of those show up on a homeowner's radar until the system stops cooling on the hottest afternoon of the year.

A maintenance visit before the cooling season catches those conditions before it's too late to address them. Our technicians check refrigerant levels, electrical connections, capacitor condition, coil cleanliness, filter condition, and airflow measurements, and they run a full cooling cycle test before the visit is complete. The air handler and ductwork are part of the inspection, not an add-on.

Homeowners on our Gold Maintenance Plan receive two full system inspections per year, priority scheduling, 10% off all service calls across every trade we offer, and no overtime charges for after-hours or weekend calls.

Frequently Asked Questions

Homeowners calling about AC service tend to have the same core questions: how serious is the problem, how long will a repair realistically last, and when does replacement make more financial sense. Here are the ones we hear most often.

How Do I Know Whether My AC Needs Repair or Replacement?

The answer depends on the system's age, the nature of the failure, and the repair cost relative to what a new system would deliver. A failed capacitor on a unit that's six or seven years old is a straightforward repair. A compressor failure on a 20-year-old system that's been running longer cycles and losing cooling capacity for a few summers already is a different conversation. We walk through the specifics with you before recommending either path.

What Does an AC Maintenance Visit Cover?

Our technicians check refrigerant levels, electrical connections, capacitor condition, evaporator coil cleanliness, filter condition, and airflow measurements during a maintenance visit. We also inspect the air handler and run a full cooling cycle test before the visit is complete. The goal is to catch the conditions that tend to cause failures during periods of high cooling demand, not after they've already caused one.

My AC Is Running but Not Keeping Up. What's Causing That?

The most common causes are a refrigerant charge below spec (usually from a slow leak), a dirty or restricted evaporator coil, or a blower motor that isn't moving air through the system efficiently. None of those show obvious symptoms until the system is running hard, which is why a unit that seemed fine in spring starts struggling in July. We check the full system, not just the outdoor unit.

How Long Should an AC System Last in Centreville's Climate?

Most systems in this area last 15 to 20 years, though the upper end of that range depends on maintenance history and how many sustained-load summers the unit has been through. Centreville's climate runs more than a full month of humid, high-80s temperatures across the summer. Systems that haven't been maintained regularly tend to reach their limit in about 12 to 15 years.