Direct Gas-Fired Heating

Greenheck's direct gas fired make-up air units feature 92% efficient burners and are offered in a wide range of air volume and heating capacities, cooling options and configurations.

Model DGK

Model DGK is designed to be the most economical, compact, and simple approach to 100% outdoor air kitchen applications. Airflow voumes range from 800 to 8,500 cfm with heating capacities up to 850,000 BTU/hr.

Model DG

Model DG is designed to be the most economical approach to 100% outdoor air applications. Airflow volumes range from 800 to 15,000 cfm with heating capacities up to 1,600,000 BTU/hr.
Cooling option: Evaporative cooling up to 12,000 cfm

Model DGX

Model DGX has greater capabilities and a modular design for greater configuration flexibility. In addition to 100% outdoor air operation, recirculation and variable volume airflow options are available. Airflow volumes range from 800 to 48,000 cfm with heating capacities up to 4,800,000 BTU/hr.
Cooling option: Evaporative cooling up to 46,000 cfm
Chilled water or DX cooling up to 11,000 cfm

Model TSU

Model TSU offers 100% outdoor air, recirculation or variable volume airflow options. Airflow volumes range from 20,000 to 64,000 cfm with heating capacities up to 6,000,000 BTU/hr.
Cooling options: Evaporative cooling is available up to 60,000 cfm.

Model VSU

Model VSU offers 100% outdoor air, recirculation or variable volume airflow options in a vertical unit configuration. Airflow volumes range from 2,000 to 64,000 cfm with heating capacities up to 6,000,000 BTU/hr.

Hot Water, Steam and Electric

Greenheck also offers non-gas tempered make-up air units for kitchen applications.

Model MSX

Model MSX is ideally suited for make-up air applications where hot water, steam or electric heat are desired. The MSX has a modular design for broad configuration flexibility. In addition to basic make-up air operation, recirculation and variable volume airflow options are available. Capacities range from 800 to 45,000 cfm and 1.75 in. wg (434 Pa).

Indirect Gas-Fired Heating

Greenheck's indirect fired gas heating make-up air units feature 80% efficient furnaces. Single, double and triple furnaces units are available with up to 8:1 staged turndown or 4:1 modulating turndown per furnace. All Greenheck furnaces are power vented to maximize the unit's life by preventing corrosive combustion gasses from condensing within the heat exchanger.

Model IGK

Model IGK is designed to be the most economical, compact, and simple approach to kitchen applications with indirect gas-fired heating. Airflow volumes range from 800 to 5000 CFM with heating capacities up to 400,000 BTU/hr.

Model IGX

Model IGX is ideally suited for gas-fired make-up air applications where a direct gas-fired system is not appropriate. The IGX has a modular design for broad configuration flexibility. In addition to 100% outdoor air operation, recirculation and variable volume airflow options are available. Airflow volumes range from 800 to 15,000 cfm with heating capacities up to 1,200,000 BTU/hr (input). Cooling options: Evaporative cooling up to 14,000 cfm. Chilled water or DX up to 11,000 cfm

Model IG

This Greenheck model features a unique indirect furnace that includes an integrated downturned plenum. This eliminates the need for an additional section to achieve a down blast discharge. In addition to 100% outdoor air operation, and recirculation options are available. Airflow volumes range from 800 to 7,000 cfm with heating capacities up to 400,000 BTU/hr (input).
Cooling options: Evaporative cooling up to 7,000 cfm

Industrial Space Heating

Greenheck’s space heating systems are designed to heat large spaces as comfortably and economically as possible. High-efficiency direct gas-fired burners promote excellent space comfort and low operating cost. The Greenheck space heating line includes the Greenheat® 100% outdoor air, Greenheat® 50/50 recirculation, and the 80/20 recirculation systems. These systems provide a variety of choices to meet the needs of your space heating application.

100% Outdoor Air Systems

The Greenheat 100% outdoor air systems provide maximum heating with maximum airflow and are great for poorly insulated spaces with high infiltration rates such as warehouses and distribution centers. This unit cycles the blower and burner on a call for heat from a remote space thermostat, supplying air at a high velocity and high discharge temperature (120-140°F).\

50/50 Recirculation Systems

The Greenheat 50/50 recirculation systems are fixed to provide a 50/50 mixture of fresh outside air and return air. Air is supplied to the space at a high velocity and high discharge temperature (140°F). The blower and burner on a 50/50 unit cycles on a call for heat from a remote space thermostat. The 50/50 system combines the benefits of 80/20 and 100% outdoor air systems, and is great for medium-to-well insulated spaces such as warehouses, distribution centers, and large manufacturing facilities.

80/20 Recirculation Systems

The 80/20 recirculation system is a hybrid make-up air system. Supply air is a variable mixture of return air and fresh outdoor air. Outdoor air volumes vary from 20% to 100% of total airflow, often configured to respond to building pressure fluctuations. The 80/20 units are excellent for facilities with mechanical exhaust systems, especially when the exhaust volume is variable. The fan runs continuously to respond to varying exhaust volumes, and the heat runs continuously in winter operation to satisfy a remote space sensor. Discharge temperatures typically range from 80-110°F.

Non-Tempered

When your application doesn't call for heating or cooling, choose from one of the following non-tempered make-up air units.

Models KSFD and KSFB

Greenheck's untempered Make-Up Air product line includes the belt driven KSFB and the direct drive KSFD. Both have a compact design with downblast discharge providing untempered make-up air for commercial and institutional kitchen applications. Choose from a downturned or extended weatherhood. Both are designed to provide compliance to NFPA-96 when used with a combination package. Eight available blower sizes provide airflow capacities up to 10,500 cfm.

Model KSF

Model KSF supplies untempered make-up air where needed. Choose from a downturned or extended weatherhood. Both are designed to provide compliance to NFPA-96 when used with a combination package. Horizontal and downblast discharge arrangements are available. Airflow ranges from 800 to 12,000 cfm.

Model MSX

Model MSX is ideally suited for make-up air applications where hot water, steam or electric heat are desired. The MSX has a modular design for broad configuration flexibility. In addition to basic make-up air operation, recirculation and variable volume airflow options are available. Capacities range from 800 to 45,000 cfm and 1.75 in. wg (434 Pa).