Engineered for reliability and easy installation, our customised electric duct heaters deliver precise, consistent heating performance across commercial and industrial HVAC applications worldwide.
Each SPC heater is factory-assembled, tested, and wired for 50/60 Hz to deliver superior performance and precise control
01
Key Features
01
Automatic and Manual reset Thermal Cut-Out
02
Airflow Sensors
03
Internal Control Voltage
04
Magnetic Contactor
02
Optional Features
Thyristor
Over Current Protection
Terminal Box Isolators
On/Off Status
Thermostat and BMS Temperature Contro
PLC or Humidistat Humidity Control
Flexible Design & Installation
All SPC electric heaters are customized and designed for seamless installation directly into ductwork with diverse structural requirements
Slip-In type Duct Heaters
This is the most commonly used type due to its simple installation process. Designed slightly smaller than the duct dimensions, they slide through a rectangular side opening and require minimal support for smaller units.
01
Flanged type Duct Heaters
Built for maximum duct rigidity, these heaters are installed by joining the outward-facing flanges of the heater and the duct. They are available with either removable or fixed heater sections.
applications and used in relatively clean environments where there is little risk of contamination from dust or debris.
02
VAV Heaters
VAV heaters utilize open coil heating elements specifically designed primarily for VAV (Variable Air Volume)
03
Engineered for reliability and easy installation, our customised electric duct heaters deliver precise, consistent heating performance across commercial and industrial HVAC applications worldwide.
Each SPC heater is factory-assembled, tested, and wired for 50/60 Hz to deliver superior performance and precise control
Key Features:
Overheat Protection
Air Flow Sensors
Internal Control Voltage
Contractor
Optional Features:
Thyristor
Over Current Protection
Terminal Box Isolators
On/Off Status
Temperature Sensor & Control
Finned Tubular Heating Elements:
SPC’s finned tubular elements help reduce watt density and hot spots, which allow for a more consistent airflow stream within the duct. Custom-built for specific job specifications, the finned tube heating elements are available in two standards with metal sheath diameters of 8 mm and 11 mm and consist of a unique nickel-chromium heating element and a stainless metal sheath. In order to ensure the best heat transfer and enhanced heat transfer area and rate, SPC utilises only high-purity magnesium oxide and corrugated stainless steel spiral fins.
Open Coil Heating Elements:
SPC’s open coil heating elements get their name due to the fact that the coils are exposed to surrounding air, which allows for rapid heating and cooling and consist of a series of resistance wires formed into coils. Meticulously designed from austenitic nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1200°C (2190°F), the coils boast great ductility after use and excellent weldability with the alloy known for its high resistivity, good oxidation resistance and form stability.
Heating Element Types
Finned Tubular Heating Elements
SPC’s finned tubular elements help reduce watt density and hot spots, which allow for a more consistent airflow stream within the duct. Custom-built for specific job specifications, the finned tube heating elements are available in two standards with metal sheath diameters of 8 mm and 11 mm and consist of a unique nickel-chromium heating element and a metal sheath. In order to ensure the best heat transfer and enhanced heat transfer area and rate, SPC utilises only high-purity magnesium oxide and corrugated stainless steel spiral fins. Ideal for Dusty, highly humid, corrosive, or outdoor industrial and commercial environments.
Open Coil Heating Elements
SPC’s Open coil heating elements are not enclosed in a protective sheath or tube as finned tubular heating elements instead, the coils are exposed to the surrounding air, which allows for rapid heating and cooling. Meticulously designed from austenitic nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1200°C (2190°F), the coils boast great ductility after use and excellent weldability with the alloy known for its high resistivity, good oxidation resistance and form stability.
Power Options & Modes of Control
Power Options
0-6 KW – Single Phase
0-120KW – Three Phase, Finned Tubular Electric Heater
0-44 KW- Three Phase, Open Coil VAV Heater
Voltage
230V / 1 Phase/ 50-60 Hz
440V / 3 Phase/ 50-60 Hz
440V / 3 Phase/ 50-60 Hz
Modes of Control
Stage (Contactors)
Modulating (Thyristor control)
Modulating and Stage
03
Applications
Residential
Duct heaters and VAV heaters are used in FCU, Package AC and FAHU ducts for regulating RH% within the space.
Commercial
For Multi-Zone Comfort Control using VAV heaters in offices.
Medical & Healthcare
Precise temperature and humidity control for patient comfort and infection control.
Industrial
For process air heating in manufacturing processes that requires a continuous flow of hot air or gases for industrial drying, curing coatings, preheating materials, and heat treatment.
Certifications
Electric Heater
Engineered for reliability and easy installation, our customised electric duct heaters deliver precise, consistent heating performance across commercial and industrial HVAC applications worldwide.
Each SPC heater is factory-assembled, tested, and wired for 50/60 Hz to deliver superior performance and precise control
01
Key Features
01
Automatic and Manual reset Thermal Cut-Out
02
Airflow Sensors
03
Internal Control Voltage
04
Magnetic Contactor
02
Optional Features
Thyristor
Over Current Protection
Terminal Box Isolators
On/Off Status
Thermostat and BMS Temperature Contro
PLC or Humidistat Humidity Control
Flexible Design & Installation
All SPC electric heaters are customized and designed for seamless installation directly into ductwork with diverse structural requirements
Slip-In type Duct Heaters
This is the most commonly used type due to its simple installation process. Designed slightly smaller than the duct dimensions, they slide through a rectangular side opening and require minimal support for smaller units.
01
Flanged type Duct Heaters
Built for maximum duct rigidity, these heaters are installed by joining the outward-facing flanges of the heater and the duct. They are available with either removable or fixed heater sections.
applications and used in relatively clean environments where there is little risk of contamination from dust or debris.
02
VAV Heaters
VAV heaters utilize open coil heating elements specifically designed primarily for VAV (Variable Air Volume)
03
Engineered for reliability and easy installation, our customised electric duct heaters deliver precise, consistent heating performance across commercial and industrial HVAC applications worldwide.
Each SPC heater is factory-assembled, tested, and wired for 50/60 Hz to deliver superior performance and precise control
Key Features:
Overheat Protection
Air Flow Sensors
Internal Control Voltage
Contractor
Optional Features:
Thyristor
Over Current Protection
Terminal Box Isolators
On/Off Status
Temperature Sensor & Control
Finned Tubular Heating Elements:
SPC’s finned tubular elements help reduce watt density and hot spots, which allow for a more consistent airflow stream within the duct. Custom-built for specific job specifications, the finned tube heating elements are available in two standards with metal sheath diameters of 8 mm and 11 mm and consist of a unique nickel-chromium heating element and a stainless metal sheath. In order to ensure the best heat transfer and enhanced heat transfer area and rate, SPC utilises only high-purity magnesium oxide and corrugated stainless steel spiral fins.
Open Coil Heating Elements:
SPC’s open coil heating elements get their name due to the fact that the coils are exposed to surrounding air, which allows for rapid heating and cooling and consist of a series of resistance wires formed into coils. Meticulously designed from austenitic nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1200°C (2190°F), the coils boast great ductility after use and excellent weldability with the alloy known for its high resistivity, good oxidation resistance and form stability.
Heating Element Types
Finned Tubular Heating Elements
SPC’s finned tubular elements help reduce watt density and hot spots, which allow for a more consistent airflow stream within the duct. Custom-built for specific job specifications, the finned tube heating elements are available in two standards with metal sheath diameters of 8 mm and 11 mm and consist of a unique nickel-chromium heating element and a metal sheath. In order to ensure the best heat transfer and enhanced heat transfer area and rate, SPC utilises only high-purity magnesium oxide and corrugated stainless steel spiral fins. Ideal for Dusty, highly humid, corrosive, or outdoor industrial and commercial environments.
Open Coil Heating Elements
SPC’s Open coil heating elements are not enclosed in a protective sheath or tube as finned tubular heating elements instead, the coils are exposed to the surrounding air, which allows for rapid heating and cooling. Meticulously designed from austenitic nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1200°C (2190°F), the coils boast great ductility after use and excellent weldability with the alloy known for its high resistivity, good oxidation resistance and form stability.
Power Options & Modes of Control
Power Options
0-6 KW – Single Phase
0-120KW – Three Phase, Finned Tubular Electric Heater
0-44 KW- Three Phase, Open Coil VAV Heater
Voltage
230V / 1 Phase/ 50-60 Hz
440V / 3 Phase/ 50-60 Hz
440V / 3 Phase/ 50-60 Hz
Modes of Control
Stage (Contactors)
Modulating (Thyristor control)
Modulating and Stage
03
Applications
Residential
Duct heaters and VAV heaters are used in FCU, Package AC and FAHU ducts for regulating RH% within the space.
Commercial
For Multi-Zone Comfort Control using VAV heaters in offices.
Medical & Healthcare
Precise temperature and humidity control for patient comfort and infection control.
Industrial
For process air heating in manufacturing processes that requires a continuous flow of hot air or gases for industrial drying, curing coatings, preheating materials, and heat treatment.
