We Fix Air Conditioners Anywhere in Northern VA
Contact (703) 337-4892 today for 24/7 emergency AC repairs. We service all brands and models in Fairfax, Alexandria, and the surrounding cities.
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Professional AC Repair Services in Northern Virginia
When your air conditioner stops working, comfort quickly disappears. At HVAC & Plumbing Unlimited, we provide fast, expert AC repair services to keep your home or business cool, dry, and comfortable—even during the peak of summer.
Our licensed technicians are equipped to diagnose and repair any make or model. Whether it’s poor airflow, strange noises, or a complete system failure, we respond quickly and get the job done right the first time. With service available throughout Fairfax, Alexandria, and nearby areas, help is always close by.
Call (703) 337-4892 to schedule your AC service today.
Signs You Need AC Repair
It’s not always easy to tell if you need your system fixed. Generally, you should call one of our AC repair contractors if your air conditioner exhibits any of these signs:
Your unit blows warm or only slightly cool air: If your AC is running but the air coming out isn’t cold, it’s a clear sign something’s wrong—often due to airflow issues or a problem inside the system.
Your unit makes odd noises, including clunks, gurgles, or unusual clicks: All air conditioners make a bit of noise. But if your unit’s noise level makes you turn the volume of your TV up, or you can hear it from another room, then it should get checked by a trained professional.
Your unit emits strange odors accompanied by poor airflow: If you’re getting strange smells when running the AC, you may need AC repair or a thorough duct cleaning. If you’re getting a musty smell of mildew, you need a cleaning, but if you’re smelling something burning coming from your vents, call one of our AC specialists immediately.
Your unit leaks excessively or drips from along the ducts: You could have a condensate line that needs repair, or maybe your air filter needs to be replaced as your unit isn’t getting proper airflow.
Our Northern Virginia AC repair professionals are proud to provide the best in repair services and are available at any hour of any day. We have the experience and training to work on any AC make or model. At HVAC & Plumbing Unlimited, your happiness is our priority.
Need a technician to fix your air conditioner fast? Call (703) 337-4892 or
Repair Signs for Different Types of Air Conditioners
Central Air Conditioning Repair
Central AC units work hard in Northern Virginia, where long, humid summers push systems to run 10–12 hours a day. In Fairfax and Loudoun County, many larger homes with open floor plans strain single-zone systems, leading to short-cycling or uneven cooling. In Arlington’s older colonials and bungalows, retrofit ductwork often leaks or restricts airflow, leaving upstairs rooms uncomfortably hot.
These include:
Refrigerant leaks or low refrigerant levels – Weak cooling, hissing noises, or ice on the coils are red flags. This isn’t just “low coolant” — it means a leak that needs professional attention.
Drainage issues and pooling water – Heavy summer humidity can overwhelm clogged drain lines, especially in Alexandria homes near the river.
Strange odors – Persistent musty smells may mean dirty coils or blocked filters.
Unusual noises – Loud banging, grinding, or squealing should be checked before they lead to major breakdowns.
Ductless Air Conditioning Repair
Ductless mini-splits are common in Alexandria’s historic row homes and Falls Church additions, where full ductwork isn’t practical. These systems are efficient, but they bring their own repair signs.
Overheating units – Outdoor condensers crammed into narrow urban lots (like in Arlington) often overheat, giving off a hot, ozone-like smell.
Refrigerant leaks – Mini-splits can develop leaks at line connections, especially in older townhomes with limited install space. Loss of refrigerant quickly reduces performance.
System icing – Ice or frost forming on the indoor unit can signal airflow blockages or refrigerant issues.
Sudden energy spikes – One reason Northern Virginia homeowners love ductless is efficiency. If your bill jumps unexpectedly, it’s often a sign something’s wrong.
Heat Pump Repair
Heat pumps are especially popular in Ashburn and Leesburg, where many newer builds were designed with all-electric systems. They can handle both heating and cooling — but that dual role means more ways they can go wrong.
Mode jamming – Heat pumps can get stuck in “heat” or “cool” mode due to a faulty reversing valve. We see this a lot during the seasonal switchovers in spring and fall.
Excess condensation or puddling water – In Fairfax basements, poor drainage or clogged coils can lead to pooling water and even mold issues.
Icing in winter or summer – Loudoun homes with builder-grade installs often call us for icing problems caused by improper airflow or under-sized systems.
24-Hour Emergency Cooling Repair Services
Available for Contract Customers
Not all HVAC problems can wait—and air conditioning breakdowns rarely happen at a convenient time. That’s why our emergency repair team is on call every day to help restore comfort quickly and reliably.
If you’re a current contract customer, your call is our priority. We dispatch a fully equipped and expertly trained technician to your home as soon as possible to diagnose and resolve the issue.
Please note: While we offer emergency service to all customers until 8 p.m., overnight emergency repairs are reserved for contract customers experiencing serious system issues.
If you’re dealing with an AC emergency, call us directly at (703) 337-4892. Phone calls allow us to respond faster and ensure your issue gets the urgent attention it needs.
Why Choose HVAC & Plumbing Unlimited for AC Repair in Northern Virginia
Since 2006, homeowners and businesses across Northern Virginia have trusted HVAC & Plumbing Unlimited to keep their properties comfortable. We don’t just repair AC systems — we back our work with a 100% satisfaction guarantee and the confidence that comes from hiring a family-owned company with decades of experience.
What sets our team apart:
✔ Certified technicians, factory-trained – Our techs bring advanced training and hands-on experience with all makes and models, so no problem goes unsolved.
✔ Reliable service, day or night – From Fairfax to Alexandria, we respond quickly with 24/7 emergency availability, including weekends and holidays.
✔ Work done right, guaranteed – We don’t cut corners. Every repair is tested, explained, and backed by our written commitment to your satisfaction.
✔ Neighbors serving neighbors – As a locally owned business, we take pride in treating your home with care and building long-term relationships in our community.
When you call HVAC & Plumbing Unlimited, you’re not just getting an AC repair technician — you’re getting a reliable partner who values honesty, craftsmanship, and your comfort above all else.
Call (703) 337-4892 for prompt and reliable repairs.
Common questions about AC Units that Need Repairs
Should I repair or replace my air conditioning system?
Most AC units last 8 to 12 years. If your AC is under eight years old and has minor issues, repair is usually the best option. However, if it’s over eight years old, needs frequent repairs, or has a costly failure, replacement may be more cost-effective. HVAC & Plumbing Unlimited can help you decide.
What should I try before calling for AC repairs?
- Check that the thermostat is set correctly.
- Ensure the air filter is clean and vents are unobstructed.
- Verify the AC breakers are on. If the system still doesn’t work, call us.
Why is my air conditioner so loud?
Some noise is normal, but loud or unusual sounds like grinding or buzzing may indicate a problem. Have your system inspected by HVAC & Plumbing Unlimited.
What causes the evaporator to freeze?
Ice on the evaporator coil may be caused by a clogged air filter, airflow problems, low refrigerant, dirty coils, or a faulty compressor. Call HVAC & Plumbing Unlimited for help.
Do you have questions about your AC system? Call (703) 337-4892 or contact us online to speak with our air conditioning experts at HVAC & Plumbing Unlimited today.
AC Repair You Can Rely On in Northern Virginia
When your air conditioner breaks down, you need fast, professional service. HVAC & Plumbing Unlimited delivers 24/7 AC repair for homes and businesses across Alexandria, Fairfax, and surrounding areas. Our certified technicians repair all AC systems—including central units, ductless systems, and heat pumps—with speed and precision.
Why choose us?
- Same-day and emergency service, even on weekends
- Repairs for all brands and models
- Clear pricing and fully stocked service vehicles
We fix the issue right the first time—no delays, no guesswork.
For immediate repairs, call (703) 337-4892 or
Other Air Conditioning Services
24/7 EMERGENCY SERVICE
If you’re having a home emergency, you don’t want to wait a minute too long. That’s why our technicians and plumbers are available to solve problems 24 hours a day, and that includes weekends and holidays. After all, things always break at inconvenient times.
PREVENTIVE MAINTENANCE SERVICES
If you keep your home’s systems operating efficiently, they’re much less likely to break down. That’s how preventive maintenance saves you money. We’ll clean and check your equipment to make sure it’s performing at is best — or fix it if isn’t.
AIR CONDITIONING SYSTEMS
You care about what goes into your home. So do we. That’s why stand behind America’s most-trusted brands heating and air conditioning equipment. We know they provide the efficiency and reliability you need to keep you comfortable.
DUCTLESS MINI-SPLIT SYSTEMS
Looking for a practical and affordable way to add air conditioning to a new part of your home or improve the temperature in a room that just never gets comfortable? Ductless mini-split systems are powerful wall- or ceiling-mounted devices that heat and cool without expensive ductwork.