Heating and Cooling Services on Long Island

Expert HVAC Heating and Cooling Solutions for Homes and Businesses

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HEATING SERVICES

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Wall-Hung Boilers vs. Conventional Boilers: Which One Best Suits Your Needs?

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Boiler Services on Long Island

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Radiant Heating Systems

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Furnaces

Expert HVAC Solutions Backed by Over 33 Years of Experience

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Licensed & Insured: Our HVAC technicians are certified and insured, offering reliable service every time.

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33 Years of Expertise: Serving Long Island with heating and cooling solutions since 1991, our team brings decades of experience.

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24/7 Emergency HVAC Services: Whether your AC stops working or your furnace breaks down, we’re available around the clock.

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Free Estimates: Transparent pricing with no hidden costs—get your free estimate today.

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Energy-Efficient Solutions: Save on energy bills with our high-efficiency HVAC systems.

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Satisfaction Guaranteed: We stand behind every HVAC service, ensuring complete customer satisfaction.

Our Heating and Cooling Services on Long Island

Comprehensive HVAC Solutions for Residential and Commercial Properties

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AC Installation & Repair

Installation of energy-efficient air conditioning systems and repairs for all makes and models.

NJM Mechanical & Contracting

Heating Installation & Repair

Furnace, boiler, and heat pump services to keep your home warm and cozy during the colder months.

NJM Mechanical & Contracting

Duct Cleaning & Installation

Improve your home's air quality and system efficiency with professional duct cleaning and installation.

NJM Mechanical & Contracting

HVAC Maintenance
Plans

Extend the lifespan of your system with regular maintenance and inspection services.

NJM Mechanical & Contracting

Indoor Air
Quality Solutions

Breathe cleaner air with our range of air purifiers, humidifiers, and dehumidifiers.

NJM Mechanical & Contracting

Smart Thermostat Installation

Upgrade to smart thermostats for improved control over your energy consumption and savings.

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Commercial HVAC Solutions

Custom-designed HVAC solutions for businesses across Long Island, ensuring comfort for employees and customers.

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Commercial Rooftop Units

Custom-designed HVAC solutions for businesses across Long Island, ensuring comfort for employees and customers.

Serving Long Island, Suffolk County, and Nassau County with Our HVAC Services

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What Our Long Island Clients Are Saying

Real Reviews from Homeowners Like You

Excellent service! My AC was fixed quickly, and the technician was so knowledgeable.

Jane D., Nassau County

★★★★★

The team installed a new furnace for us, and we couldn’t be happier with the results!

Mike P., Suffolk County

★★★★★

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Awards and Accreditation

Contact NJM Mechanical & Contracting for Heating and Cooling Services

We’re Available 24/7 for HVAC Services

Need fast and reliable HVAC service? Whether you need a new system installation, emergency repair, or routine maintenance, NJM Mechanical & Contracting is here to keep your home comfortable all year round. With 33 years of experience and a commitment to energy-efficient solutions, we’re the trusted choice for heating and cooling services on Long Island.

Don’t wait until your system breaks down—contact us for preventative maintenance and expert HVAC solutions.

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Get in Touch Today!

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Service Area: Serving Suffolk and Nassau Counties on Long Island
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