The production of the new Winterwarm HR is in full swing. When you need to recplace a unit air heater, it is certainly advisable to choose a condensing heater. After all, the gas consumption will drop, and the feeling of comfort will raise as the Winterwarm HR is provided with a modulating fan and burner, as well as a temperature gradient control. And the pay back time of the extra investment costs is only 2,5 to 3 years. Check yourself our calculation example!