Air Conditioning Installation & Repair in Waltham, MA

Air Conditioning Installation & Repair in Waltham, Massachusetts

Waltham residents trust Mass HVAC for professional air conditioning installation & repair. Serving Middlesex County and the surrounding communities, we bring decades of combined experience to every heating, cooling, and air quality project.

Professional air conditioning service in Waltham, MA starts with understanding the home. Middlesex County is characterized by dense housing stock including Victorian-era multi-family homes, triple-deckers, condominiums, and brownstones — many with steam radiator heating systems, limited closet space for equipment, and shared walls that complicate installations. Each home type has different cooling requirements, and a system that works perfectly in one may be completely wrong for another.

Space is at a premium in Greater Boston. Ductless mini-splits are the preferred cooling solution because they require no ductwork, the indoor units are compact and wall-mounted, and the outdoor condensers can be bracket-mounted to save ground space. We also work within condo association guidelines to ensure installations comply with building rules.

AC services we provide in Waltham: - Central air conditioning installation and replacement - Emergency AC repair — we prioritize vulnerable residents during heat waves - Seasonal cooling system tune-ups - Refrigerant leak diagnosis and repair - Thermostat programming and smart home integration - Indoor humidity control and dehumidification

We never install an air conditioning system without first performing a cooling load calculation. This ensures your Waltham home gets the right-sized unit — not too large (which short-cycles and fails to dehumidify) and not too small (which runs constantly and cannot keep up).

The Mass HVAC Advantage in Waltham

We are based in Milford, MA — close to Waltham and all of Middlesex County. That proximity means:

• Faster response times for emergencies and scheduled service
• Knowledge of local building codes and permit requirements
• Familiarity with Waltham's housing stock and common HVAC configurations
• Established relationships with local suppliers for fast parts availability
• A reputation built on referrals from satisfied Waltham homeowners

Call (508) 740-4113 for a free air conditioning installation & repair estimate in Waltham, MA.