DML & S Air Conditioning & Heating: Keeping Saint James NY Comfortable Since 1983

DML & S Air Conditioning & Heating is a trusted family-run HVAC, electrical, and plumbing contractor serving Saint James NY and surrounding Suffolk and Nassau communities. Founded in 1983, the company provides reliable heating, cooling, and indoor air quality services for both homes and businesses. They offer 24/7 emergency repairs, ensuring help is available whenever a system fails or a pipe bursts. As a small, dedicated team, they focus on building personal connections with every customer.

Business Overview

DML & S Air Conditioning & Heating handles residential and commercial needs across Long Island. Their team is skilled in multiple trades, allowing them to manage complex projects that might involve HVAC, electrical, and plumbing work. This multi-service approach is convenient for homeowners and property managers in Saint James NY. They are known for clear communication and taking the time to explain options to customers.

Key Services

The company’s wide range of services addresses common local needs, from seasonal system check-ups to urgent repairs.

  • HVAC Services: Installation, replacement, repair, and maintenance for heating and cooling systems. This includes energy-efficient solutions and ductless mini-splits, which are great for older homes or room additions.
  • Electrical Services: Safety inspections and repairs to keep wiring and systems functioning safely.
  • Plumbing Services: Inspections, repairs, and water pipe fixes to prevent leaks and water damage, a common concern in local basements and crawl spaces.

Areas Served

DML & S proudly serves a broad area across Suffolk County, including Smithtown, East Setauket, Brentwood, Coram, Centereach, Medford, Hauppauge, Lake Ronkonkoma, Kings Park, Rocky Point, Nesconset, Stony Brook, Terryville, Mount Sinai, Miller Place, Lake Grove, Middle Island, Port Jefferson Station, Sound Beach, Port Jefferson, and many more towns. Their long history here means they understand the specific needs of Long Island homes, from coastal properties to inland neighborhoods, and the wear that local weather puts on systems.

Company History

The business began in 1983 when the founder started serving the Nassau and Suffolk community. It remains a small, family-owned and operated company today, now run by his sons. This continuity is rare in the industry. They have built their reputation on lasting relationships, with many customers returning for over 30 years. Their growth is based on repeat business and referrals from satisfied local residents.

Leadership

The current owners, brothers with over 20 years of industry experience each, took over daily operations from their father. They maintain the hands-on, personal approach the company was built on. Being local themselves, they are invested in the community’s well-being. They believe in keeping customers informed and involved in every service decision, which builds trust and clarity.

Specialties & Highlights

Several features make DML & S Air Conditioning & Heating stand out in Saint James NY.

  • Mitsubishi Electric Diamond Contractor: This elite designation means they are specially trained and certified to install and service high-efficiency ductless and VRF systems.
  • Multi-Trade Expertise: One call can handle HVAC, electrical, and plumbing issues, simplifying home maintenance.
  • Generational Knowledge: Decades of serving Long Island provide deep insight into local building styles and common system problems.
  • 24/7 Emergency Service: They are always on call for urgent heating, cooling, or plumbing emergencies.

Why Locals Choose DML & S

Residents and businesses in the Saint James NY area choose DML & S Air Conditioning & Heating for their reliability, quality workmanship, and deep local roots. They are not a large, impersonal corporation; they are neighbors who take pride in their work and aim to create lifelong customer relationships. Their combination of experience, broad service capability, and commitment to clear communication makes them a go-to resource for home comfort and repair needs across Suffolk County.

Contact Information

DML & S Air Conditioning & Heating

★★★★★ 5.0 / 5 (3)

: 6 Floral Ln, Saint James, NY 11780

: (631) 862-6016

: http://www.dmlsair.com

Business Services

  • Electric inspection
  • HVAC installation or replacement
  • HVAC system repair
  • HVAC system maintenance
  • Plumbing inspection
  • Plumbing repair
  • Water pipe repair

Business Location & Hours



Mon:8:00 AM - 5:00 PM
Tue:8:00 AM - 5:00 PM
Wed:8:00 AM - 5:00 PM
Thu:8:00 AM - 5:00 PM
Fri:8:00 AM - 5:00 PM
Sat:Closed
Sun:Closed




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