HC 3S
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LPHW Unit Heater
HC-3S

The HC-3S LPHW unit heater is designed for industrial and commercial facilities such as production halls, warehouses, workshops, retail spaces and garages. The unit requires connection to a water system with a heating medium, which transfers heat through the heat exchanger into the room. It can also be supplied with cold water to circulate cool air in the facility. The unit is fully compatible with heat pumps, ensuring efficient heating and cooling.

Heating capacity 1,55 – 91,5 kW
Cooling capacity 2,6 – 35 kW
Airflow 850 – 5 000 m³/h
Ingress protection IP54
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About the product

HC-3S is an LPHW unit heater designed for heating and cooling industrial and commercial facilities — production halls, warehouses, workshops, retail spaces and garages. It requires connection to a water installation with heating medium, but can also be supplied with cold water to circulate cool air, making it fully compatible with heat pumps in both operating modes.

The copper-aluminium heat exchanger, available in 1-, 2- or 3-row versions, ensures efficient heat exchange and can operate with a medium temperature up to 120°C. Heating capacity from 1.79 to 91.5 kW and airflow from 850 to 5,000 m³/h allow the unit to be matched to facilities of varying volumes.

The expanded polypropylene (EPP) housing is lightweight, resistant to mechanical damage and provides excellent thermal and acoustic insulation, facilitating installation and ensuring durability. The three-stage AC induction motor with IP54 protection (optionally an energy-efficient EC motor with smooth 0–100% control) and adjustable ABS air louvres allow precise matching of operation and airflow direction to facility requirements.

Key features

  • Heating capacity: from 1.55 kW to 91.5 kW
  • Cooling capacity: from 2.6 kW to 35 kW
  • Airflow: from 850 m³/h to 5,000 m³/h
  • 3-stage fan speed control
  • AC induction motor with IP54 protection rating
  • EPP housing
  • Adjustable ABS air louvres (optional: 360° diffuser or confusor)
  • Made in Poland

Why choose the HC-3S unit heater?

Compatible with heat pumps

LPHW unit heaters can be matched to installations with heat pumps and other low-temperature heat sources. The final output depends on the water parameters, room temperature and required airflow, which is why individual technical selection is recommended for such installations.

Lightweight and durable EPP housing

The expanded polypropylene (EPP) housing is lightweight, resistant to moisture andnd corrosion, and at the same time effectively dampens vibration and fan noise. This material, used in the automotive and aerospace industries, also performs well in the demanding conditions of production halls and warehouses.

Copper-aluminium heat exchanger

The copper-aluminium heat exchanger provides high heat transfer efficiency in a compact form. Available in 1, 2 or 3-row versions — selecting the right configuration allows the heating capacity to be matched to the requirements of a specific facility.

Cooling mode and water vapour condensation

In cooling mode (chilled water supply), water vapour condenses on the heat exchanger surface — the HC drip tray must be used. The dedicated accessory is available separately, and the full installation should include condensate drainage in accordance with the product manual.

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Models and parameters

Parameter HC15-3S HC20-3S HC30-3S HC35-3S HC45-3S HC50-3S HC70-3S HC80-3S
Product code WHHC15-3S-2402 WHHC20-3S-1759 WHHC30-3S-1760 WHHC35-3S-1761 WHHC45-3S-1762 WHHC50-3S-2006 WHHC70-3S-1764 WHHC80-3S-1956
Unit output [kW*]
3rd stage / 2nd stage / 1st stage 		17,2 / 13,4 / 12,1 21,4 / 17,3 / 13,3 26,4 / 20,3 / 15,5 30,3 / 22,9 / 17,3 42,0 / 28,9 / 21,1 49,8 / 45,2 / 34,6 60,6 / 40,1 / 32,7 69,2 / 61,5 / 46,5
Heating capacity range [kW**] 1,79 – 23,3 1,55 – 28,4 1,8 – 34,9 2,14 – 40,1 3,21 – 55,6 5,00 – 65,8 5,0 – 80,1 6,96 – 91,5
Max. airflow [m³/h]
3rd stage / 2nd stage / 1st stage 		1500 / 1000 / 850 3200 / 2150 / 1350 3100 / 1950 / 1250 2700 / 1700 / 1100 2500 / 1450 / 950 5000 / 4200 / 2600 3400 / 1900 / 1450 4200 / 3500 / 2300
Max. air reach [m] 10 19 18 15 14 24 18 21
Number of heat exchanger rows [pcs] 2 1 1 2 2 2 3 3
Water capacity [dm³] 0,45 0,65 0,8 1,35 1,7 1,95 2,85 2,85
Maks. temp. czynnika grzewczego [°C] 120 120 120 120 120 120 120 120
Max. working pressure [MPa] 1,6 1,6 1,6 1,6 1,6 1,6 1,6 1,6
Connection diameter [in] 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4
Voltage / frequency [V/Hz] 230/50 230/50 230/50 230/50 230/50 230/50 230/50 230/50
Rated current [A]
3rd stage / 2nd stage / 1st stage 		0,36 / 0,22 / 0,21 0,82 / 0,62 / 0,41 0,82 / 0,62 / 0,41 0,82 / 0,62 / 0,41 0,82 / 0,62 / 0,41 2,05 / 1,65 / 1,4 1,08 / 0,86 / 0,7 2,05 / 1,65 / 1,4
Obroty silnika [obr/min.]
3rd stage / 2nd stage / 1st stage 		1400 / 1200 / 1000 1380 / 1030 / 650 1380 / 1030 / 650 1380 / 1030 / 650 1380 / 1030 / 650 1380 / 1200 / 900 1360 / 1050 / 750 1350 / 1200 / 900
Motor power [W]
3rd stage / 2nd stage / 1st stage 		80 / 48 / 45 185 / 140 / 90 185 / 140 / 90 185 / 140 / 90 185 / 140 / 90 455 / 350 / 280 240 / 190 / 160 455 / 350 / 280
IP protection rating 54 54 54 54 54 54 54 54
Waga netto [kg] 10 12,5 12,5 14 14 20,5 20 22,5
Noise level [dB***]
3rd stage / 2nd stage / 1st stage 		53 / 47 / 45 57 / 55 / 49 57 / 55 / 49 56 / 54 / 48 56 / 54 / 48 66 / 60 / 54 58 / 53 / 49 65 / 59 / 53

* przy parametrach wody 90/70°C oraz temperaturze wlotowej powietrza 0°C
** moc maksymalna 120/90°C, 0°C na wlocie, 3 bieg // moc minimalna 40/30°C, 20°C na wlocie, 1 bieg
*** measured at 5 m distance

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FAQ

Model selection depends primarily on the facility volume, required heating capacity and water installation parameters. Use our online calculator or contact a technical adviser who will help select the optimal model based on your facility parameters.

Yes, the HC-3S unit heater can work with a heat pump. However, heating capacity depends on the supply water temperature from the heat pump. At lower water temperatures (e.g. 45/35°C), output will be lower than at standard parameters (80/60°C). We recommend individual technical selection for such installations.

The HC-3S unit heater can operate at various water temperatures. Catalogue power parameters are given for 80/60°C. At lower temperatures, heating capacity decreases. In cooling mode (chilled water), a drip tray must be used for condensate drainage.

The dedicated controller for the HC-3S 230 V unit heater is the HC3S controller with thermostat. It enables 3-stage control and automatic temperature maintenance. For more advanced installations, the HMI CURTAIN BMS controller is available for building automation integration.

Yes. The HC-3S unit heater can be installed both horizontally (ceiling-mounted) and vertically (wall-mounted). Various airflow configurations are available: downward, angled or horizontal. For wall mounting, the dedicated HC rotating bracket is used, enabling horizontal rotation of the unit.

The HC-3S unit heater carries a 24-month manufacturer's warranty. The conditions for maintaining the warranty are correct installation in accordance with the user manual and use of the unit for its intended purpose.

Ask about selection

of the LPHW unit heater

Don't waste time browsing through catalogues. Leave your contact — we'll call back to ask about your facility parameters and prepare a tailored solution.

  • Heating capacity calculation for your facility volume
  • Selection of the optimal unit heater model and series
  • Confirmation of availability and delivery time
  • Direct contact with a sales advisor
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