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Contact Mannix Heating and Cooling for HVAC and Pool Heat Pump Service Today!

We get that installing an AC is more than just purchasing a new cooling system; it’s investing in the comfort, performance, and energy savings of your home. That’s why we handle every replacement project with care, transparency, and technical mastery.

Indicators AC Needs Replacing

Knowing when to purchase a new air conditioning system can protect you from rising utility payments and unwelcome repairs. Read through the following signs that it may be time for a new AC replacement Chantilly VA:

Uneven Cooling: If your rooms never cool to the desired temperature or the cooling is uneven, this could be a sign of a failing system.

Tomorrow You Need A Repair – Again: If your repair bills are stacking up, the total price you are paying is higher than the replacement.

Rising Energy Costs: As they age, HVACs become less efficient and end up costing you more and more each month.

System Age: On average, air conditioners work well for 10–15 years. If yours is reaching the end of the normal life span, replacing it may be more economically friendly than making repairs.

Abnormal Noises and Smells: Grinding, whistling, or musty odors could be a sign of serious internal system damage or malfunctioning mechanisms.

And if you’re running into any of these troubles, perhaps it’s time to discuss with a specialist who could help you determine your replacement possibilities.

Our AC Replacement Process: What to Expect

There are no cookie-cutter solutions at Mannix Heating & Cooling. Our procedure is designed around every individual customer, so you can be assured that your new AC unit will be customized to your individual needs and budget. Here’s how we work:

In-Depth System Assessment

We’ll start by looking at your existing HVAC equipment, as well as assessing your home’s cooling loads and any weak points in your existing system.

Load Calculation

The right size for a system will not only save energy because it won’t need to work as hard to heat and cool your home, but also provide year-round comfort, ultimately resulting in a longer-lasting system. We employ industry-standard techniques to estimate square footage, insulation levels, window types, and how many people live in the home.

System Selection

We have a variety of energy-saving equipment to choose from. Whether you want a good, better, or best model, we have the right model for you, and the AFUE (annual fuel utilization efficiency) the model achieves will help your home stay warm all winter long.

Professional Installation

The installation is critical to your system’s performance. Our professional technicians install your new AC Unit for top performance by verifying airflow, refrigerant, and that it is seamlessly connected to your ductwork and thermostat.

Post-Installation Testing

We then test it extensively and show you how it works / how to maintain the system. ​ We make sure everything is OK before we count the job as finished.

Why Mannix Heating & Cooling?

Selecting an HVAC contractor is as significant as selecting an AC unit. We have nearly 50 years of experience, serving Chantilly VA as the premier AC replacement Chantilly VA service provider!

Here’s why real estate investors and homeowners still rely on us:

Professional Fully Licensed & Insured Technicians

Our specialists are experienced, certified, and dedicated to high-quality service in compliance with local construction laws and industry standards.

Energy-Efficient Solutions

We strive for systems that save you money and reduce your energy consumption, to help you do your part in protecting the environment, without sacrificing performance.

Transparent Pricing

No hidden fees. We supply clear quotes and estimates along with detailed invoices to make sure you know what you are paying for.

Ongoing Support

Installation is just the beginning of what we offer. We provide continuous service and responsive service, so that you can stay comfortable.

Customer-Focused Approach

Client satisfaction is our top priority, from initial consultation to completion. We personalize every step based on your goals and desires.

Selecting the Right System: Key Considerations

Choosing a new air conditioner can seem complicated. Mannix Heating & Cooling takes the guesswork out of it by breaking down what is important:

Efficiency Ratings

The Seasonal Energy Efficiency Ratio (SEER) rating will provide you with the ability to determine how much cooling a system delivers for each unit of energy it consumes. The greater the SEER rating, the more energy efficient the AC unit is.

Cooling Capacity

Capacity, measured in BTUs, dictates how well a unit can cool your space. A system that is too small will have to run constantly, while an oversized system could cycle on and off too frequently, causing unnecessary wear and inefficiency.

Technology Integration

Today’s AC units come with smart thermostats, zoning features, and variable-speed motors. These features provide control and savings on energy.

Noise Level

Some units run more quietly than others, which is particularly important if your cooling needs include bedrooms or home offices.

We walk you through these considerations so you can make sure your system adapts not only to your home, but also to your lifestyle.

Why Should I Hire a Pro for My AC Replacement?

Replacing the unit on the cheap, or doing so with an underqualified technician, might save a bit of money in the short run, but typically results in frustration in the long run. What you get when you hire Mannix for AC replacement. As one of the top AC replacement companies in Chantilly VA, you will get the following from Mannix:

  • Uniform comfort in every room
  • Lower monthly energy bills
  • Less tendency to break down and require maintenance
  • Longer system lifespan
  • Improved indoor air quality

And have peace of mind that the job is done right

When it comes to your comfort and investment, rely on the pros who do it right the first time.

Financing and Warranties

We get that replacing your AC can be a big cost to fit into your budget. That’s why we provide affordable financing offers to help you install your HVAC system.

On top of that, our installs are all covered by a labor warranty to give you even more peace of mind and protection.

Maintenance Scheduling for Long-Term Dependability

After your new unit is in operation, the only thing you can do is look after it properly. Mannix Heating & Cooling delivers personalized service plans that provide customers with annual tune-ups, priority service, and repair discounts.

Regular service helps keep your new AC unit performing at peak levels, conserves energy, and can help prolong the equipment’s life.

Kick Off Your AC Replacement Today

An inefficient air conditioning system can increase your utility bill and make those very warm days even more uncomfortable. Don’t wait for your system to fail. Our expert technicians can help you choose the air conditioner that best fits your cooling needs and your budget – and then make sure it is installed and maintained correctly for maximum cooling efficiency.

Call Now to Schedule Your Free AC Replacement Consultation

If you’re ready to upgrade your comfort with expert AC replacement Chantilly VA solutions, Mannix Heating & Cooling is here to help. Call us today or fill out our online form to schedule your no-obligation consultation. Let’s find the right system for your home, installed by the team you can trust.

We’re in Your Neighborhood

Whether you’re in Gaithersburg, MD, Chantilly, VA, or Treasure Island, FL, our local teams are ready with 24-hour answering service and experienced technicians who keep your systems running when you need them most.

Gaithersburg, MD

7824 Beechcraft Ave
Gaithersburg, MD, 20879
(301) 260-6000

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Chantilly, VA

26955 Gum Spring Road
Chantilly, VA, 20152
(703) 777-9211

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Treasure Island, FL

10625 1st Street E. Suite 200
Treasure Island, FL, 33706
(727) 999-7002

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HVAC Maintenance

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Comprehensive Climate Control Solutions

Our comprehensive approach encompasses everything from routine maintenance to complete system overhauls, ensuring optimal performance throughout every season. We specialize in both residential and commercial applications, understanding that each environment presents unique challenges requiring customized solutions.

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Customer Referral Program

Customer Reviews
I contacted Mannix from a referral of a friend who has benefitted from the excellent service this company provides. I found out a couple I know in Vienna had their heat pump stop working a few months ago and needed to be replaced. I called up the Mannix office later in the day on Monday 11/30/20...
Lynne Wilson Leave a Review
Customer Reviews
Mannix proved very responsive in fixing my A/C system. The tech, Erick, was very professional by taking the time showing and explaining to me the system problem prior to taking action replacing the coil. Ashleigh, customer service, was excellent in addressing and following through on concerns in...
Gary Hendricks Leave a Review
Customer Reviews
I’ve been using Mannix for years and have never been disappointed. They’ve replaced my HVAC, hot water heater and installed a humidifier on my furnace. Whenever I need them, they can get me on the schedule in a timely manner. All the personnel are great and I trust Jerry and his team...
Rachel Craft Leave a Review
Customer Reviews
Before dealing with Mannix I used two very well-known and “reputable” HVAC companies who did nothing but rip us off over the years. I was frustrated and found Mannix Heating & Cooling about 10 years ago. They installed a new HVAC system in my old home, and installed a water...
Customer Reviews
My 24-year-old heat pump finally decided to stop working. I sent a request for a replacement estimate late one night through the Mannix website and received a phone call early the very next morning to set up an appointment. Eric Holzworth stopped by my house the next day to go over my options. He...
Customer Reviews
They were lifesavers!!! My furnace went out and after three days of dealing with the home warranty company and the unscrupulous vendor they sent to my home, I called Mannix. The service technician was friendly, efficient but most of all honest. He found the problem after twenty minutes, saving...
Shondra J ones Leave a Review
Customer Reviews
Mannix has always been professional from service calls to repairs and replacements. The technicians are always polite and knowledgeable. They consistently exceed our expectations.
Wendy Collins Leave a Review
Customer Reviews
I have been using Mannix for years. They have replaced my HVAC system and I have them do maintenance twice a year. The past couple of visits have been done by Ramiro. He is professional, polite, knowledgeable, and very helpful in assisting me with tips on the best ways to operate my system. Today,...
Patricia Ryan Leave a Review
Customer Reviews
Been a happy Mannix customer for a few years now, but recently had them replace our aging HVAC system. The whole process was very painless, from Eric helping us decide which system was right for our home, to the efficient and professional installation by Billy and Matt. I am very pleased with the...
Philip Slingerland Leave a Review
Customer Reviews
We were in desperate need of a fix on our AC system during the July heatwave. The issue arose on a Saturday. Mannix came to the rescue in short order, fixed it, and at a reasonable price. Silvio G was the technician, and he was GREAT. We would definitely use Mannix again!
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