The CAB420FLS-12V hydrovac hot water heater module from Dynablast produces 420,000 Btus. Ideal for colder climates and improved digging in clay-filled areas, this compact 24- by 24-inch unit provides efficiency with a heat rise of 120 degrees F at 5 gpm. The reversible door design provides multiple installation options for a variety of truck configurations. It runs clean, is ETL-approved and has two service access panels and two momentary override controls, which increase the serviceability and reduce truck downtime. The cabinet is built out of 14-gauge steel with polyester powder-coated paint and aluminum cap and stainless steel hardware. Units are also available in a 304 stainless steel finish. 905/867-4642; www.dynablast.ca.