There are two types of chillers: air-cooled and water-cooled which simply describes how the chillers’ condenser is removing heat from the building.

Chillers are refrigeration systems that produce and circulate chilled water to air-handler units. Inside the air-handler units, fans push air across the evaporator coils to cool and dehumidify air.

They are typically found in larger commercial/industrial facilities with combined loads of 100 tons or more.

• Rebate amounts and qualifying conditions vary depending on chiller type, capacity and efficiency rated at AHRI conditions of the equipment you replace or install.
• Backup or emergency chillers do not qualify.

Direct-expansion (DX) is just a technical term for a standard air conditioner or commercial HVAC system including split systems, mini splits, packaged type units and roof top units.

The inside air-handler unit uses a fan to push air across the evaporator coil, which absorbs heat to cool and dehumidify air. It works with the outdoor condenser unit to release the heat from the freon to the outside so it can return and absorb more heat.

• Air, water and evaporative-cooled A/Cs and heat pumps
• Single vertical package A/Cs and heat pumps
• Variable refrigerant flow A/C sand heat pumps, both air-cooled and water-cooled
• Computer Room cooling systems- air, water, and glycol cooled
• Package terminal A/Cs or heat pump systems
• Units that exceed the Florida Building Code

Visit the U.S. Department of Energy's website for a calculator that computes the lifetime energy cost savings for rooftop units.

VFDs installed on chilled water pumps and condenser water pumps motor. 

With our rebates and energy savings, most commercial VFD installations pay for themselves within 2-4 years through reduced energy costs and maintenance savings.