Professional AC Installation or Replacement in Fairfax, VA
Falcon Heating, Air Conditioning, & Plumbing installs central air conditioners, heat pumps, and ductless systems throughout Fairfax, VA. Our award-winning technicians are among the most trained in the area. Call (703) 596-9998 to schedule or book a consultation online.
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Since 1988
Installs done in a day
40+ industry awards
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We install and replace all AC systems.
Local technicians who match your home with the right equipment
We’ve installed AC systems in hundreds of Fairfax homes — colonials off Old Lee Highway, townhouses near Fair Oaks, split-levels in Burke. We know what works in each one and what doesn’t. Before we touch anything, we assess your home properly. That means looking at your ductwork, your layout, how your home holds heat, and what the last system got wrong. We don’t size by square footage alone and we don’t push whatever’s in the truck. You get the system that fits your home, installed correctly the first time.
Get a free custom quote on a new AC.
Call (703) 596-9998
Why Fairfax Homeowners Choose Falcon Heating, Air Conditioning, & Plumbing for AC Installations
✔ Serving Northern Virginia for nearly 40 years with a focus on long-term system performance — not just getting a unit in the ground and moving on
✔ Certified, factory-trained technicians who assess your home properly before recommending any equipment — so the system is sized and installed correctly from the start
✔ Trane Comfort Specialist and Mitsubishi Electric Diamond Contractor — recognized for installation quality, advanced training, and customer satisfaction
✔ Proven approach to load calculations, airflow, and system sizing — because an oversized or undersized unit creates problems no matter how good the equipment is
✔ Clean, professional workmanship with every system tested and set up to run efficiently before we leave
✔ Straightforward equipment recommendations and clear pricing — so you understand exactly what you’re getting and why it’s the right fit for your home
Neighborhoods We Serve in Fairfax, VA
Falcon installs AC systems across Fairfax — Mosby Woods, Kings Park, Fair Lakes, Fairfax Station, Greenbriar, Sully Station, and beyond. We’ve been working in these neighborhoods long enough to know what we’re going to find before we open the door.
That familiarity matters when you’re choosing a replacement system. A company that doesn’t know the neighborhood might install a unit that runs fine on paper and struggles in your actual home. We know what works in Fairfax — which systems handle the humidity well, where ductwork typically needs attention before a new install, and how to size equipment for the way these homes actually heat and cool across the seasons.
Systems We Install
The right system depends on your home’s layout, existing infrastructure, and how you use the space. Here’s how the main options differ.
Central Air Conditioners
Central AC works with your existing ductwork to cool the whole home from a single outdoor unit and indoor air handler. It’s the most common system in Fairfax homes and the most straightforward replacement when existing ductwork is in good shape.
Best for: Homes with existing ductwork that’s in reasonable condition and want whole-home cooling with one system.
Heat Pumps
A heat pump handles both heating and cooling in a single system, moving heat in or out of your home depending on the season. Modern heat pumps perform well in Northern Virginia’s climate and can significantly reduce energy costs compared to running separate heating and cooling systems. They’re available in ducted configurations that use your existing ductwork, or ductless setups for homes without it.
Best for: Homeowners looking to consolidate heating and cooling into one efficient system, or those replacing older equipment and want to reduce utility costs long-term.
Ductless Mini-Splits
Mini-splits deliver conditioned air directly to the room without ductwork, using a small wall-mounted unit connected to an outdoor compressor. They allow room-by-room temperature control and are particularly effective in spaces that ductwork doesn’t reach well — sunrooms, finished basements, additions, or upper floors that always run hot. Multi-zone systems can handle several rooms from a single outdoor unit.
Best for: Older homes without ductwork, home additions, specific problem rooms, or anyone who wants independent temperature control by zone.
High-Efficiency Systems
Available across all system types, high-efficiency models run quieter, dehumidify better, and cost less to operate over time. If your system runs heavily through Fairfax’s long cooling season, the efficiency gains add up quickly.
Best for: Homeowners focused on long-term operating costs, comfort, or taking advantage of available rebates and incentives.
What the Installation Process Looks Like
1. In-home assessment: We visit your home, evaluate the existing system and ductwork, and perform a load calculation. If the ductwork has leaks, poor routing, or inadequate return air, we flag it — a new system installed on failing ductwork won’t perform the way it should.
2. Equipment recommendation: We present options based on your home’s actual needs: efficiency tier, brand, and configuration. We’ll explain the differences plainly — what you get at each price point and where the diminishing returns are.
3. Installation day: Our technicians remove the old equipment, install the new system, and test it thoroughly before leaving. We check refrigerant charge, airflow at every vent, thermostat communication, and drainage. You’ll know the system is running correctly before we pack up.
4. Walkthrough: Before we leave, we walk you through the new system — filter location, thermostat settings, what to expect in the first few days, and when to schedule the first maintenance visit.
Get started with your AC installation or replacement.
Call (703) 596-9998
Frequently Asked Questions
How long does AC installation take? Most replacements are completed in a single day — typically 4 to 8 hours depending on the system and whether any ductwork modifications are needed. New installations in homes without existing ductwork take longer and we’ll give you a clear timeline upfront.
How much does AC installation cost in Fairfax? Cost varies based on system type, efficiency tier, and the condition of existing ductwork. We provide a detailed quote after assessing your home — not a ballpark number over the phone that changes when we arrive. If you’re comparing quotes from multiple companies, make sure each one includes the same scope of work.
Do I need a permit for AC installation in Fairfax? In most cases, yes — Fairfax County requires a mechanical permit for AC installations and replacements. We handle the permitting process as part of the job. Be cautious of any contractor who suggests skipping permits; unpermitted work can create problems when you sell your home.
What happens to my old equipment? We remove and dispose of the old system as part of the installation. Refrigerant is recovered properly before removal in compliance with EPA regulations — you don’t need to arrange anything separately.
What brands do you install? We’re a Trane Comfort Specialist and Mitsubishi Electric Diamond Contractor, and we install equipment from other leading manufacturers as well. We’ll recommend what we believe is the best fit for your home and budget — not just whatever carries the highest margin.
How long will a new AC system last? A properly sized and installed system with regular maintenance typically lasts 8 to 12 years. The biggest factors are correct installation and annual tune-ups — systems that were oversized, undersized, or poorly installed rarely reach that lifespan regardless of brand.
Do you offer financing? Yes — financing options are available for qualified customers. Ask about current terms when you call. For many homeowners, financing makes it easier to choose a higher-efficiency system upfront, which pays back through lower energy bills over time.
Other Air Conditioning Services
Air Conditioning Repair
The team at Falcon Heating, Air Conditioning & Plumbing is skilled to work on all makes and models, and provides prompt service to get your cooling system back up and running to ensure your comfort.
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AC Installation
We offer only the latest in technology and quality products from leading manufacturers. Your satisfaction, with a keen focus on workmanship, energy efficiency, and your budget, makes Falcon your clear choice.
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AC Maintenance & Tune-Up
Keep your cooling system running efficiently with professional AC maintenance and tune-up service from Falcon. Schedule seasonal service across Northern Virginia to reduce breakdown risk and maintain consistent summer performance.
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Ductless Heating & AC
Get efficient heating and cooling without bulky ductwork. Ductless mini-splits are ideal for additions, older Alexandria homes, and hard-to-condition rooms. Learn more about installation, repair, and maintenance options.
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elite Care Advanced Maintenance Program
Proper maintenance of your heating, cooling, plumbing and electrical systems helps to ensure that they operate efficiently and safely. Plus, our maintenance plans include additional benefits including priority service and discounts.
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Air Conditioning Warranties
We offer only the latest technology and quality products sourced from leading manufacturers. Combined with our expert installation process and procedures, Falcon is the clear choice to get the workmanship and energy efficiency out of your new system.
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We Proudly Serve the Following Communities in Northern Virginia
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