HRVU DHV-15B HEAT RECOVERY VENTILATION FULL SYSTEMS ANTI CONDENSATION AND MOULD

Working OKThe heat recovery can be better.Innput temperature when temperature inside is 22 *C and outside temp is 0 *C. Low 15 *C, Med 12 *C and High 10 *CThe sound level is good. But there are some vibration noice, especaly at high level.