Hydronic Unit Heaters Home /Products/Heating/Hydronic Unit Heaters HIGH TEMP WATER HORIZONTAL MODINE HOT DAWG® (H20) MODINE HORIZONTAL (HSB/HC) MODINE POWER THROW (PT) VERTICAL MODINE VERTICAL (V) LOW TEMP WATER HORIZONTAL MODINE LODRONIC™ (HCH) MODINE (GLW)