Residential & Commercial Mechanical Contractors

Our Services

Expert heating, cooling, and indoor air quality solutions engineered for Long Island homes and businesses. 24/7 emergency response and upfront pricing.

Air Conditioning Repair

Air Conditioning Repair

Fast 24/7 diagnostic and repair services across Long Island. We resolve frozen coils, electrical failures, refrigerant leaks, and compressor breakdowns on all major makes and models.

  • 24/7 Emergency Dispatch
  • All Makes & Models Serviced
  • Upfront Flat-Rate Pricing
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Air Conditioning Installation

Air Conditioning Installation

High-SEER2 central cooling systems sized with ACCA Manual J engineering calculations for balanced indoor comfort. Eligible for thousands in PSEG Long Island Clean Heat utility rebates.

  • Precision Manual J Sizing
  • PSEG Rebates Available
  • 10-Year Warranty Coverage
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Heating Repair & Emergency Service

Heating Repair & Emergency Service

Rapid emergency heating diagnostics and repairs for gas furnaces, hydronic boilers, and steam systems across Nassau and Suffolk. Certified combustion safety and carbon monoxide testing on every call.

  • Furnace & Boiler Specialists
  • Emergency Winter Response
  • Certified Combustion Testing
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Heating Installation & Boiler Replacement

Heating Installation & Boiler Replacement

Ultra-efficient condensing gas furnaces and wall-hung combi boilers achieving up to 98% AFUE. Turnkey oil-to-gas conversions with custom near-boiler hydraulic looping.

  • Up to 98% AFUE Efficiency
  • Oil-to-Gas Conversions
  • Near-Boiler Piping Mastery
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Heat Pumps & Ductless Mini-Splits

Heat Pumps & Ductless Mini-Splits

All-in-one year-round heating and cooling engineered for freezing cold climates down to -13°F. Multi-zone independent room controls with top-tier PSEG utility rebates up to $8,000+.

  • Heats Down to -13°F
  • Up to $8,000+ PSEG Rebates
  • Independent Multi-Zone Comfort
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Commercial HVAC Installation & Service

Commercial HVAC Installation & Service

Industrial-grade rooftop packaged units (RTU), custom curb adaptations, crane rigging, and customized preventative maintenance agreements for facilities across Long Island.

  • 2 to 50+ Ton RTU Packages
  • Custom Maintenance Contracts
  • 24/7 Priority Emergency Service
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Long Island Mechanical Excellence

Engineered Cooling & Heating for Long Island's Coastal Climate

Operating heating, ventilation, and air conditioning equipment on Long Island presents unique challenges that generic contractors often overlook. Surrounded by the Atlantic Ocean, Long Island Sound, and the Great South Bay, our homes and commercial facilities endure intense summer humidity waves that demand superior latent moisture removal, paired with harsh coastal nor’easters and sub-freezing winter cold snaps. Moreover, airborne salt spray accelerates galvanic corrosion on outdoor aluminum condenser fins and copper piping, shortening the lifespan of poorly protected equipment.

At K2 Cooling & Heating, our certified mechanical technicians specialize in systems engineered specifically for Long Island properties. Centrally dispatched from our modern operations hub at 60 S 2nd St V in Deer Park, NY, we provide rapid, licensed service across both Suffolk County and Nassau County. From post-war Cape Cod and split-level homes requiring multi-zone ductless mini-split retrofits to center-hall Colonials and commercial retail strip centers, we provide custom-sized installations and precision diagnostics that guarantee balanced, whisper-quiet indoor comfort year-round.

Every service call and installation we perform adheres to rigorous mechanical standards. We calculate exact thermal heating and cooling loads utilizing ACCA Manual J methodologies rather than relying on outdated rules of thumb, preventing premature compressor wear and short-cycling. As an approved PSEG Long Island Clean Heat Participating Contractor, we help local homeowners unlock thousands of dollars in instant point-of-sale utility rebates—often ranging from $1,000 to over $8,000 for high-efficiency cold-climate heat pump conversions—supplemented by up to $2,000 in federal Inflation Reduction Act (IRA) tax credits.

Whether you need urgent 24/7 emergency air conditioning repair on a ninety-degree August weekend, a comprehensive seasonal furnace tune-up, or a full commercial rooftop packaged unit replacement with custom curb adapters and crane rigging, K2 Cooling & Heating is your dedicated pair of hands. We stand behind every job with upfront flat-rate pricing, transparent diagnostic reporting, zero hidden travel fees, and comprehensive 10-year warranty options.

24/7 Fast Dispatch

Centrally based in Deer Park for 45–90 min emergency arrival across Long Island.

Licensed & EPA Certified

Master mechanical contractors with comprehensive county and municipal licensing.

PSEG Clean Heat Partner

Instant point-of-sale utility rebates up to $8,000+ filed directly on your behalf.

Upfront Flat-Rate Pricing

Straightforward quotes before work begins with zero overtime or travel surcharges.

Don't See What You're Looking For?

K2 Mechanical provides custom solutions for complex cooling and heating projects. Contact our specialists for a tailored consultation.