NF 7-10KW 800V High Voltage Thin Film Coolant Heater

Our thin-film heater is a smart, high voltage coolant heater designed especially for electric vehicles—built to keep things running smoothly, efficiently, and safely in all kinds of weather. Using advanced semiconductor-style manufacturing (like physical vapor deposition), it layers ultra-thin, high-performance heating elements onto lightweight substrates—resulting in a heater that’s not only highly efficient, but also remarkably even, durable, and quick to respond (reaching target temperature in seconds).

You’ll notice the difference right away: unlike traditional PTC heaters—which naturally lose power as they warm up—our thin-film design delivers steady, reliable performance at 96–97% efficiency across a wide temperature range. It adjusts heat precisely using PWM control, starts gently with zero inrush current (so your sensitive electronics stay protected), and works seamlessly across 400V–1000V systems—including today’s demanding 800V architectures. Plus, it’s made without lead or rare-earth materials, and its cost is now competitive with PTC—so you get cutting-edge performance without compromise.

In everyday use, it quietly supports three key roles: warming battery coolant to keep your pack in its ideal 20–45 °C range (helping preserve both driving range and long-term battery health), heating cabin air quickly on cold mornings, and clearing fogged windows in seconds. It can even pre-heat your system before a cold start—making every winter drive safer and more comfortable.

At Hebei Nanfeng Automobile Equipment (Group) Co., Ltd.—a trusted partner since 1993—we’re more than a supplier. With six modern factories and deep experience in new energy vehicle systems, we proudly support leading EV manufacturers across China—and serve as a designated supplier for Chinese military vehicles. Our full portfolio includes high-voltage coolant heaters, electronic water pump, BTMS, electric air compressors, EPS, EHPS, e-air conditioning compressors, three-way valves, parking heaters, parking air conditioners, and plate heat exchangers.

And we’re excited to share that our new 10 kW thin-film heater series is now available. Whether you’re exploring options for the first time or continuing a valued partnership, we’d be delighted to talk—answer your questions, share samples, or help tailor a solution that fits your needs just right.