Hydronic Kickspace Heater, 5,015 BTU

Beacon-Morris K42 TWIN-FLO III Hydronic Kickspace Heater – Compact Hydronic Solution for Undercabinet and Tight-Space Zones The Beacon-Morris K42 model from the TWIN-FLO III series is a compact hydronic kickspace heater engineered to deliver efficient zone heating in areas with limited wall or floor space. Its low-profile design and fan-assisted output make it an ideal fit for undercabinet installations or recessed wall cavities where baseboard or panel radiators are not feasible. Utilizing forced convection via an integrated tangential blower and copper tube/aluminum fin heat exchanger, the K42 distributes heat generated by a hot water loop with output ratings from 1,480 to 5,240 BTU/hr depending on system water temperature and flow conditions. The fan is activated by an aquastat to engage only when water temperature meets the setpoint. Common Installation Areas: Cabinet bases in kitchens and baths Laundry rooms Small foyers and vestibules Tight alcoves and enclosed utility zones Low-clearance additions or renovations Performance & Technical Data: BTU Output: 1,480 to 5,240 BTU/hr (at standard water temps) CFM (Air Delivery): 53 CFM at high fan setting Fan Type: Tangential cross-flow blower Motor: Shaded pole, 0.034 HP, 3,200 RPM Voltage: 115V Power Draw: 30.7 watts (0.5 amps) Dimensions: Width: 12-1/4" Height: 4" Depth: 12-3/4" Design Features: Low-profile housing for base cabinet or recessed wall installation Integral fan control for automatic operation based on water temperature Quiet operation via tangential blower design Heavy-duty steel cabinet with corrosion-resistant finish Field-wired junction box for electrical connection Installation Considerations: Requires connection to a hot water supply loop and a dedicated 115V electrical feed Installation must conform to local plumbing and electrical codes Mounting flexibility allows horizontal or vertical orientation depending on space constraints Ideal for retrofit or new construction applications where conventional radiation is not practical Best suited for closed-loop systems with adequate flow and temperature control Professional Use Case: Contractors appreciate the K42 for its ability to resolve heating gaps in architectural layouts where radiators or ductwork are impractical. The unit’s compact footprint, quiet fan operation, and field-replaceable components make it suitable for small residential zones, kitchen toe-kicks, or bath retrofits. The heater can be integrated into multi-zone systems and controlled via standard aquastats or thermostatic control valves.