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

At Mannix Heating and Cooling, we understand the unique challenges that coastal properties face, from salt air corrosion to the constant demands placed on cooling systems in our subtropical climate.

Our comprehensive AC service approach begins with understanding each system’s specific needs and addressing potential issues before they escalate into costly breakdowns. The combination of high temperatures, which regularly exceed 90 degrees from May through October, and humidity levels that often surpass 70 percent creates an environment where air conditioning systems must operate at peak efficiency. Without proper maintenance and timely service, even the most robust systems can fail when you need them most.

Comprehensive Maintenance Programs

Regular maintenance forms the foundation of reliable air conditioning performance in Treasure Island’s demanding climate. Our technicians perform thorough system inspections that include checking refrigerant levels, testing electrical connections, cleaning coils, replacing filters, and calibrating thermostats to ensure optimal operation. During these service visits, we measure system performance against manufacturer specifications, identifying components that may be wearing prematurely due to the constant operational demands.

The coastal environment presents unique challenges that require specialized attention during maintenance visits. Salt air accelerates corrosion on outdoor units, potentially damaging aluminum fins, copper coils, and electrical components. We apply protective coatings to vulnerable surfaces and ensure proper drainage to prevent standing water that can compound corrosion issues. Indoor components also require careful attention, as high humidity levels can promote mold growth in ductwork and on evaporator coils, affecting both system efficiency and indoor air quality.

Emergency Repair Services

When your AC system fails during a scorching summer day, you need immediate assistance from experienced professionals who understand the urgency of the situation. If a problem occurs with your heating or cooling system, don’t panic, call Mannix! They have an outstanding reputation for customer service and have some of the most experienced techs in the industry. Just look them up on Angie’s List or read what others are saying about them on Google or Yelp. Our diagnostic process quickly identifies the root cause of system failures, whether it’s a failed compressor, refrigerant leak, electrical malfunction, or mechanical breakdown.

Common issues we encounter in Treasure Island homes include frozen evaporator coils caused by restricted airflow or low refrigerant levels, capacitor failures due to electrical storms and power surges, and drainage problems resulting from algae growth in condensate lines. Each repair begins with a comprehensive evaluation to ensure we address not just the immediate problem but also any underlying issues that could cause future failures. Our service vehicles carry extensive parts inventories, allowing us to complete most repairs during the initial service call.

System Optimization and Efficiency Improvements

Maximizing your air conditioning system’s efficiency reduces energy consumption while improving comfort levels throughout your home. We analyze system performance using advanced diagnostic tools that measure temperature differentials, airflow rates, and electrical consumption patterns. This data helps identify opportunities for improvement, whether through simple adjustments or component upgrades.

  • Duct sealing and insulation: addressing leaks that can reduce system efficiency by up to 30 percent
  • Thermostat upgrades: installing programmable or smart thermostats for better temperature control
  • Airflow improvements: balancing systems to eliminate hot spots and ensure even cooling
  • Refrigerant optimization: ensuring proper charge levels for maximum cooling capacity
  • Component cleaning: removing buildup that restricts heat transfer and reduces efficiency

Indoor Air Quality Solutions

Treasure Island’s high humidity levels create ideal conditions for mold, mildew, and other air quality concerns that affect both comfort and health. Our air quality services address these challenges through comprehensive solutions including UV light systems that neutralize biological contaminants, advanced filtration systems that capture particles as small as 0.3 microns, and humidity control equipment that maintains optimal moisture levels year-round.

We also provide duct cleaning services that remove accumulated dust, debris, and biological growth from your home’s air distribution system. This process improves airflow efficiency while reducing the circulation of allergens and contaminants throughout your living space. Regular air quality assessments help identify potential issues before they impact your family’s health or comfort, ensuring your AC system provides not just cooling but also clean, healthy air throughout your Treasure Island home.

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.

Mannix Rewards

Receive up to $100 Mannix Heating & Cooling Visa® Prepaid Card

Customer Referral Program

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!
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 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
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
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
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
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
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
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
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
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