Contact Us
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
20KW HVH Electric Bus Heater
The 20KW HVH eletric bus heater is a new energy vehicle specific pure electric heating solution, specially developed for electric buses, commercial vehicles and new energy passenger cars.
Description
20KW HVH Electric Bus Heater

The 20KW HVH electric bus heater is a new energy vehicle specific pure electric heating solution, specially developed for electric buses, commercial vehicles and new energy passenger cars. Adopting advanced electric heating technology, it completely abandons traditional fuel heating methods. The product features adjustable power, low operation cost, zero pollution and high safety, which can comprehensively meet vehicle defrosting, cabin heating and battery thermal insulation requirements, and is an ideal heating accessory for pure electric and hybrid new energy vehicles.
Product features

Product features
1. Equipped with high voltage PTC heating elements and rated IP67 protection degree. The heater supports continuous dry-burn resistance for more than 500 hours, ensuring outstanding durability under extreme operating conditions.
2. The built-in controller real-time monitors high voltage and current signals. It actively cuts off high-voltage power and triggers alarm shutdown once overvoltage or overcurrent anomalies are detected, effectively protecting the whole vehicle electrical system.
3. Integrated with a high-voltage fuse inside the heater. In case of internal short-circuit failure, the fuse can instantly disconnect the high-voltage circuit to avoid secondary damage and fault spread to other vehicle components.
4. PTC coolant heater has passed professional EMC electromagnetic compatibility certification and E-Mark vehicle safety certification, fully compliant with international vehicle application standards and road traffic regulations.
5. Precise timing and temperature control functions are available via CAN bus communication. In addition, the product features excellent corrosion resistance and successfully passes 720-hour neutral salt spray test, adapting to harsh and long-term outdoor vehicle operating environments.
Products parameter
|
Product code |
Size (mm) |
Rated power (kW) |
Rated voltage (VDC) |
Coolant |
In‑rush current (A) |
High‑voltage range (VDC) |
|
HVH Series High Voltage Coolant Heater |
327 × 312.5 × 118.2 |
15/20/25/30 0‑30 |
600 |
50% Water + 50% Ethylene Glycol |
≤ 65 |
400‑800 |
|
Low‑voltage range (VDC) |
Control type |
Insulation resistance (MΩ) |
Electrical performance |
IP rating |
Weight (kg) |
|
|
8‑32 |
CAN / Level control |
1000 VDC, ≥500 MΩ /60s |
2850 VAC, ≤15 mA /60s |
IP67 / IP6K9K |
9.2 |






Products Advantages
(1) Deliver an adjustable‑power sufficient heat source to simultaneously address defrosting, cabin heating and battery thermal preservation requirements.
(2) Low operating costs: zero fuel combustion eliminates high fuel expenses. The unit is maintenance‑free, requiring no annual replacement of components worn out by high‑temperature combustion. It operates cleanly without residue, removing the need for frequent oil‑stain cleaning work.
(3) Pure‑electric buses can dispense with heating‑related fuel consumption for improved environmental performance.
Products application
20KW HVH Electric Bus Heater is specially designed for new energy vehicle thermal management systems, widely applicable to pure electric buses, commercial vehicles, logistics vehicles, new energy passenger cars and hybrid vehicles. It mainly covers three core application scenarios to ensure vehicle safety, battery performance and driving comfort in extreme low temperature environments.
1. Power Battery Low-Temperature Thermal Insulation & Preheating
In cold weather, low temperature will reduce battery activity, shorten cruising range and slow down charging speed. The heater rapidly heats the circulating coolant and precisely preheats the battery pack to the optimal working temperature range. It effectively improves battery charging efficiency, restores discharge performance, and extends battery service life.
2. Cabin Heating & Intelligent Temperature Control
Replacing traditional fuel heating, the pure electric heating system provides stable and continuous cabin heating in winter. It supports adjustable power and intelligent constant temperature control, greatly improving passenger comfort while achieving zero fuel consumption and low energy consumption.

Company Introduction

Founded with a focus on new energy vehicle thermal management systems, our company is a professional manufacturer and supplier of high voltage coolant heaters, PTC air heater, air compressor, Electric Air Conditioning Compressor, EHPS and core thermal components. We integrate independent R&D, structural design, precision production and standardized testing, providing reliable, cost-effective heating solutions for new energy buses, commercial vehicles and passenger cars. All products comply with international automotive standards and have complete certification qualifications, serving global customers with stable quality, fast delivery and professional technical support.
In addition, we regularly participate in well-known international automotive industry exhibitions to showcase our latest heating and cooling technology and product innovations. Through on-site technical exchanges and face-to-face business communication with global clients, we continuously upgrade our product performance, optimize technical solutions, and keep pace with the development trends of the new energy vehicle industry. Our stable product quality and professional service have won wide recognition from overseas partners.

Shipping & Logistics
We support flexible and diversified shipping methods including sea freight, air freight and express delivery. Sufficient raw material inventory and standardized production management ensure stable production capacity and short lead time. Strict product packaging and shockproof protection effectively prevent damage during transportation. We provide complete logistics tracking documents to ensure safe, intact and on-time delivery of goods for every customer.

FAQ

Common Problem
What power ratings are available for this high‑voltage coolant heater?
This high‑voltage coolant heater comes with power options of 15 kW, 20 kW, 25 kW and 30 kW.
How is this high‑voltage coolant heater controlled?
It is controlled via CAN bus, with selectable baud rates of 250 k and 500 k.
Could you share more comprehensive technical documentation for this product?
Absolutely. We can provide engineering drawings, operation manuals, CAN bus protocols and 3D models for your evaluation.
Can we achieve a total heating output of 100 kW within a vehicle application?
Yes. Approximately 90 kW total power can be attained by operating three 30 kW high‑voltage coolant heaters in parallel.
Technical Documents & Service
We provide comprehensive and standardized technical support for all customers. Complete product files can be supplied upon request, including product dimension drawings, installation manuals, technical specifications, CAN communication protocols, test reports, certification documents and 3D models. Professional pre-sales technical consultation and after-sales technical guidance are always available to support customer project design, verification and mass production.
Our address
Room 505, Building B, Free Town Center, No. 58, East Third Ring South Road, Chaoyang District, Beijing,100022,P.R.China
Phone Number
+86 010 58673556
(1) nh.jiao@auto-parkingheater.com
(2) nh.li@auto-parkingheater.com

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