Comprehensive HVAC Solutions for Your Home and Business
When indoor comfort matters most, Mannix Heating and Cooling delivers professional heating, ventilation, and air conditioning services throughout Gaithersburg, MD, Chantilly, VA, Treasure Island, FL and their surrounding areas! Don’t Panic, Call Mannix!
Service calls are normally $225.00
Call (703) 777-9211 for more info
Service calls are normally $120.00
Call (703) 777-9211 for more information.
Call (703) 777-9211 for more information.
Call (703) 777-9211 for more information.
We’re in Your Neighborhood
Whether you’re in Gaithersburg, MD, Chantilly, VA, or Treasure Island, FL, our local teams are ready with a 24-hour answering service and experienced technicians who keep your systems running when you need them most.
Treasure Island, FL
10625 1st Street E. Suite 200
Treasure Island, FL, 33706
(727) 999-7002
Our family-owned operation has built an outstanding reputation for customer service since 2010, combining technical expertise with honest, fair business practices that have earned recognition as a Carrier Factory Authorized Dealer. We take pride in treating every customer’s home or business as if it were our own, ensuring quality workmanship and transparent communication throughout every project. Just look us up on Angie’s List or read what others are saying about us on Google or Yelp to understand why homeowners and businesses trust us with their indoor climate control needs.
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.
Heating Services and System Expertise
Our heating division handles all major equipment types including gas furnaces, electric heat pumps, dual-fuel systems, boilers, and high-velocity heating configurations. Modern heating systems incorporate sophisticated control boards, variable-speed blowers, and modulating gas valves that require specialized diagnostic equipment and technical knowledge for proper service. We perform comprehensive heat exchanger inspections using advanced camera technology to detect microscopic cracks that could lead to carbon monoxide exposure. Our technicians analyze combustion efficiency, measure temperature rise across heat exchangers, and verify proper venting to ensure safe operation while maximizing fuel economy.
Mannix Rewards
Receive up to $100 Mannix Heating & Cooling Visa® Prepaid Card
Regular heating maintenance extends equipment lifespan significantly beyond manufacturer warranties. During seasonal tune-ups, we clean burner assemblies, adjust gas pressure to manufacturer specifications, test safety controls including limit switches and flame sensors, and verify proper airflow across heat exchangers. These preventive measures typically reduce heating costs by fifteen to twenty percent while preventing unexpected breakdowns during peak winter demand when replacement parts may face supply chain delays.
Air conditioning systems have evolved dramatically with the introduction of variable-speed compressors, smart thermostats, and environmentally friendly refrigerants. We service all cooling equipment including central air conditioners, ductless mini-splits, heat pumps, and high-velocity systems designed for homes without traditional ductwork. Our cooling services address common issues like refrigerant leaks, frozen evaporator coils, failed capacitors, and worn contactors that compromise system efficiency.
The EPA’s phase-out of R-22 refrigerant has created challenges for older system maintenance, requiring careful retrofit planning or strategic replacement timing. We help customers navigate these transitions by analyzing repair versus replacement economics, considering factors like SEER ratings, equipment age, and available utility rebates. Modern systems achieving 20+ SEER ratings can reduce cooling costs by forty percent compared to units installed before 2006, making upgrades financially attractive despite initial investment requirements.
Indoor air quality directly impacts respiratory health, sleep quality, and overall wellbeing, particularly in Gaithersburg, MD, Chantilly, VA, Treasure Island, FL and their surrounding areas where seasonal allergens and humidity fluctuations create challenging conditions. We install and service comprehensive air quality systems including:
- HEPA filtration systems capturing particles down to 0.3 microns including viruses, bacteria, and allergen proteins
- UV germicidal lights neutralizing biological contaminants within ductwork and on evaporator coils where moisture promotes microbial growth
- Whole-house humidifiers and dehumidifiers maintaining optimal 30-50% relative humidity levels year-round
Professional air quality assessments identify specific contaminants affecting your environment, whether volatile organic compounds from building materials, combustion byproducts from attached garages, or biological allergens from pets and outdoor sources. We design targeted solutions addressing identified concerns while integrating seamlessly with existing HVAC equipment.
Beyond traditional HVAC services, we provide comprehensive home comfort solutions including electrical services, water heater installation, pool heat pump systems, and standby generator installation. These interconnected systems require coordinated planning to maximize efficiency and reliability. Our Aeroseal duct sealing service addresses the twenty to thirty percent energy loss typical in older ductwork systems, using advanced polymer technology to seal leaks from inside ducts without invasive demolition.
If a problem occurs with your heating or cooling system, don’t panic, call Mannix! Our rapid response capabilities, extensive parts inventory, and manufacturer relationships ensure minimal downtime when equipment failures occur. We maintain strong partnerships with Carrier and Honeywell, providing access to premium equipment lines and extended warranty options that protect your investment while ensuring long-term performance reliability throughout Gaithersburg, MD, Chantilly, VA, Treasure Island, FL and their surrounding areas and surrounding communities. We also service a variety of makes and models including Rheem.
