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.
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 use only top brand names that strive for innovation and excellence as we do.
DML&S technicians are very professional, clean, and courteous.
We are always honest and enjoy building a relationship with every one of our customers.
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 use only top brand names that strive for innovation and excellence as we do.
DML&S technicians are very professional, clean, and courteous.
We are always honest and enjoy building a relationship with every one of our customers.
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.
Give us a call today if you require heating service, repair on installation.
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.
Give us a call today if you require heating service, repair on installation.
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.
Our commercial systems maintenance programs can keep your building operating costs low and ensure you get the most from this asset.
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.
Our commercial systems maintenance programs can keep your building operating costs low and ensure you get the most from this asset.
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.
If you want cleaner, healthier indoor air, we can help supply and install the latest air filtration systems, air decontaminating UV lamps, dehumidifiers and humidifiers.
Carbon Monoxide is a dangerous gas that you can't see, smell or taste, and can build up in enclosed spaces in your home.
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.
If you want cleaner, healthier indoor air, we can help supply and install the latest air filtration systems, air decontaminating UV lamps, dehumidifiers and humidifiers.
Carbon Monoxide is a dangerous gas that you can't see, smell or taste, and can build up in enclosed spaces in your home.
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.
Advanced technologies are used to help you precisely control the temperature of each room that has an indoor unit and allows you to condition only the rooms in use.
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.
Advanced technologies are used to help you precisely control the temperature of each room that has an indoor unit and allows you to condition only the rooms in use.
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