Our professionally trained HVAC technicians will install or replace your Central Heating and Air Conditioning unit. When planning the installation of your HVAC unit, we offer many affordable and energy efficient units to choose from. Although we prefer to use high end central air systems and heating units like Lennox and Trane we offer less expensive units that will suit your needs. Dakin and Mistubishi ductless units are a great option for rooms without space for ductwork. We install Aprilaire dehumidifiers and humidifiers, Honeywell and Nest thermostats. Our installation of geothermal water source heat pumps can save you up to 50% on air conditioning 70% on heating. At JJT Mechanical we offer full installation of Central air systems from 1.5 tons to 25 tons. We are proud to say we serve all of Long Island, NY. We are licensed and insured in both Suffolk and Nassau county. We are Government EPA certified. We are a Certified LIPA cool homes contractor. We work closely with many of Long Islands top home and commercial builders. We can suggest a custom plan for an affordable HVAC unit to suit your heating and cooling needs. Call us to schedule your free no obligation estimate for your new Residential or Commercial installation.