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Hebei Nanfeng Automobile Equipment (Group) Co.,Ltd
Phone: +86 18811334770
Tel: +86 0317 8620396
Tel: +86 010 58673556
Candy Jiao
E-mail: nh.jiao@auto-parkingheater.com
Email: nh.li@auto-parkingheater.com
Add: Room 505, Building B, Free Town Center, No.58, East Third Ring South Road, Chaoyang District, Beijing, 100022, P.R.China
HVAC 20kw Battery Cabin Coolant Heater
The 20kW High-Voltage PTC Coolant Heater acts as the heart of the vehicle’s hydronic heating loop. It works seamlessly in conjunction with cabin radiators, floor blowers, and front defrosters. By continuously circulating high-temperature coolant through the vehicle's thermal network, it delivers uniform, powerful passenger cabin heating and rapid windshield de-icing, maintaining a comfortable environment even in the harshest winter conditions.
Description
HVAC 20kw Battery Cabin Coolant Heater
Products Description
Welcome to NF PTC coolant heater. HVAC 20kw Battery Cabin Coolant Heater is an electric heater that heats antifreeze with electricity as energy source and provides heat source for passenger cars.
The heating device uses PTC semiconductor (positive temperature coefficient thermistor), and the shell is made of aluminum alloy precision casting, with excellent anti-dry, anti-interference, anti-collision, explosion-proof performance, safe and reliable, trustworthy.
Q series is suitable for PTC water heater with rated voltage range of DC450V- 1000V and rated power of 10-30KW (the rated voltage and the power can be customized on your requirements.The Max. rate voltage is 850V DC).This product supports CAN communication and can adjust the power. And also supports the special customization requirements of important technical parameters such as voltage, power, temperature limit, and current limit
| Power (KW) | 10KW | 15KW | 20KW |
| Rated voltage(V) | 600V | 600V | 600V |
| Supply voltage (V) | 450-750V | 450-750V | 450-750V |
| Current consumption (A) | ≈17A | ≈25A | ≈33A |
| Flow (L/h) | ＞1800 | ＞1800 | ＞1800 |
| Weight (kg) | 8kg | 9kg | 10kg |
| Installation size | 179x273 | 179x273 | 179x273 |
| Control signal | Rocker switch hardwire control | Rocker switch hardwire control | Rocker switch hardwire control |
Key Features & Advantages of HVAC 20kw Battery Cabin Coolant Heater
highlighting advantages of our products
Low maintenance cost
Environmental protection
Energy saving and comfort
Provide sufficient heat source
Heavy-Duty 20kW Thermal Performance: Specially optimized with a massive 20kW heating capacity to offset high-frequency heat loss from transit bus door operations and extensive cabin spaces.
800V Platform Compatibility: Engineered to operate flawlessly within a 600V to 850V DC high-voltage range, matching the latest high-voltage EV bus and truck architectures.
Advanced BTMS & Cabin Integration: Dual-purpose functionality that ensures robust battery pre-heating to prevent range degradation while delivering uniform, powerful cabin heating and windshield de-icing.
Smart Stepless Power Regulation: Features integrated CAN Bus (CAN 2.0B) communication, allowing the vehicle control unit (VCU) to precisely adjust power from 0kW to 20kW based on real-time temperature data, drastically saving battery power.
Low-Resistance, High-Flow Design: Internally optimized to handle high flow rates (40L/min) with minimal fluid resistance, working perfectly with high-capacity automotive electric water pumps.
Automotive-Grade Safety Redundancy: Equipped with multi-layered hardware and software protection including dual thermal cut-outs (over-temperature defense), dry-run protection, short-circuit, and high-voltage isolation.
Products Details
Products Application
This 20kw Battery Cabin Coolant Heater is the ideal choice for tier-1 system integrators and commercial EV manufacturers across multiple industries:
Electric Transit Buses & Coaches (8-12 meter municipal fleets)
Heavy-Duty Electric Trucks & Logistics Vehicles
Electric Construction Machinery & Mining Equipment
Large-Scale Battery Energy Storage Systems (BESS / ESS)
Hydronic Heating System Compatibility (How It Works)
The 20kW PTC heater acts as the central heat source, warming up the coolant mixture. To distribute this heat effectively, it is designed to work seamlessly in a closed loop alongside:
High-Voltage Electric Water Pumps (to circulate the hot liquid).
Cabin Radiators and Wall Blowers (to warm the passenger seating area).
Front Defroster Units (for driver comfort and clear windshield visibility).
Battery Cooling/Heating Plates (for low-temperature BTMS wake-up).
Why Choose Our Factory?
OEM/ODM Customization: We support tailor-made mounting brackets, customized inlet/outlet pipe diameters, and specific CAN communication matrix calibration to match your vehicle's factory wiring harness.
Certified Quality Supply Chain: Our production lines strictly implement the IATF 16949 standard, ensuring every high-voltage heater passes rigorous insulation, sealing, and EMC testing before shipment.
Are you working on an electric bus or commercial vehicle integration project? [Contact Me Today] for 3D CAD models, wiring diagrams, and bulk wholesale pricing!
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