At DML & S Air Conditioning & Heating, we're here to help your create and maintain a healthy indoor climate in your home or commercial property. As a full-service HVAC contractor, we provide both residential and commercial heating, cooling and indoor air quality products and services.
Our family owned business has been serving Long Island, including Head of the Harbor, Smithtown, Miller Place and Mount Sinai NY, for over 30 years and we are proud of our reputation for professional, courteous and attentive service.For all of your heating needs in East Setauket, Miller Place, Mount Sinai NY and the surrounding areas of Nassau and Suffolk counties, we are here to help!
Replace your system and get up to $1,400 per unit in rebates with the PSEGLI Cool Homes Program. Only available through approved contractors.
Our family owned business has been serving Long Island, including Head of the Harbor, Smithtown, Miller Place and Mount Sinai NY, for over 30 years and we are proud of our reputation for professional, courteous and attentive service.For all of your heating needs in East Setauket, Miller Place, Mount Sinai NY and the surrounding areas of Nassau and Suffolk counties, we are here to help!
Replace your system and get up to $1,400 per unit in rebates with the PSEGLI Cool Homes Program. Only available through approved contractors.
Services
DML & S Air Conditioning & Heating is a family owned and operated company established in 1983. We offer quality workmanship at affordable prices to our neighbors throughout Nassau and Suffolk counties, including Setauket, Miller Place, and Mount Sinai NY. We take pride in our work and go above and beyond to make sure our work is top notch.
We understand that no other single system in your home plays a larger role in your comfort or how much your utility bill will be than your heating & air conditioning system. At DML & S, our technicians our available to keep your HVAC system running efficiently year-round. Now that we're into the coldest months of the year, your heating system in Miller Place, Mount Sinai, and the surrounding NY area is more important than ever.
As a business owner or facility manager, you are responsible for the proper standard of care for the occupants of our building. Aside from the health and wellness of the employees or tenants in your building, how can you go wrong with lower utility costs and extended life on your HVAC equipment? We provide full-service HVAC maintenance, with dedicated staff to ensure ongoing system maintenance, warranty compliance and quick repair.
Indoor air pollution can actually be worse for you than outdoor pollution! People spend the majority of their lives inside their homes and buildings, so clean indoor air with low levels of dust, particulates and contaminants and the right level of humidity is more important for day-to-day health and comfort.
Split zoning technology is a primary source of year-round comfort control worldwide. Mitsubishi has been available in the U.S. for almost 30 years, but is increasing in popularity because it provides comfort and is efficient. Mitsubishi Electric's split zoning systems use refrigerant lines to connect an outdoor unit to one or multiple indoor air handlers, increasing the energy efficiency within a home.
Reviews (3)
Donna R.
Jul 22, 2019
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Francis E.
Jul 10, 2019
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Jay T.
Feb 10, 2015
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We recently purchased our first home early last year. It is a historical home built in 1920s, in which needed some moderate updating. One of which was our boiler that we wanted to convert from oil to gas. Since this being our first home and an older home we contacted many Long Island larger companies to find out what it would cost us and what it would take to convert as well as making our home more energy-efficient. After speaking with some of the larger companies we were not at all impressed nor did they offer us the quality work we needed to last us 20 years plus.
We reached out to some friends
We reached out to some friends
