Heating & cooling across Long Island
Comfort you can count on.
PROMAX provides residential and commercial HVAC repair, installation and maintenance throughout Nassau and Suffolk counties.
Complete comfort service
Heating, cooling and more
One reliable point of contact for essential HVAC and equipment service in homes and commercial properties.
HVAC Repair
Careful troubleshooting and practical repairs for heating and cooling systems.
Learn moreCentral Air
Cooling system inspection, repair, maintenance and installation support.
Learn moreGas & Oil Boilers
Heating and boiler diagnostics, service and installation for dependable comfort.
Learn moreWater Heaters
Water heater troubleshooting, repair and installation for homes and businesses.
Learn moreAppliance Services
Professional appliance service support for residential and commercial customers.
Learn moreSystem Maintenance
Component checks, airflow review, electrical inspection and performance testing.
Learn more
Professional system care
A detailed check—not a quick guess.
PROMAX evaluates the components that affect comfort and performance, then explains the service needed in straightforward terms.
Inspect
Review system condition, refrigerant, airflow, electrical connections and operation.
Explain
Share clear findings and the appropriate repair, maintenance or installation path.
Service & test
Complete the agreed work and check overall system performance.
Service area
Across Nassau and Suffolk counties
PROMAX serves residential and commercial customers throughout Long Island.
Request service in your countyPROMAX is ready to help
Need heating or cooling service?
Talk directly with PROMAX or send a service request and we’ll follow up.