When winter storms sweep through Maryland and Virginia, or when summer heat waves blanket our neighborhoods with stifling temperatures, there’s one name that local residents have learned to trust: Mannix Heating & Cooling.

A Legacy of Service

From the bustling streets of Montgomery Village to the residential communities of Chantilly, the story of reliable HVAC service isn’t just about maintaining equipment – it’s about maintaining relationships. In every neighborhood we serve, from Gaithersburg to Centreville, our commitment to excellence has become a cornerstone of community comfort.

More Than Just Repairs

Consider the typical scenario during a sweltering July afternoon in Rockville: A family’s air conditioning system suddenly stops working. The indoor temperature climbs steadily, and comfort quickly becomes a distant memory. This isn’t just about fixing machinery; it’s about restoring peace of mind to a household in distress.

Our service area spans across two states, including:

• Maryland Communities:
  • Montgomery Village
  • Gaithersburg
  • Rockville
  • Olney
• Virginia Communities:
  • Chantilly
  • Centreville
  • Dulles

Whether it’s a furnace service call on a bitter winter morning in Olney or an emergency AC repair during a heat wave in Dulles, our commitment remains unwavering. We understand that HVAC services aren’t just about maintaining equipment – they’re about maintaining the quality of life for families throughout our service area.

The true measure of our success isn’t just in the technical expertise we bring to every air conditioning installation or heating repair. It’s in the trust we’ve built within our communities. From routine maintenance to emergency services, we’ve dedicated ourselves to ensuring that every home and business we serve remains comfortable throughout the year.

As seasons change and technologies evolve, our commitment to excellence remains constant. Whether you’re in Maryland or Virginia, our message remains the same: Your comfort is our priority, and we’re here to ensure your HVAC systems work reliably when you need them most.