A dynamic model of a radiant #oor heating (RFH) system useful for control analysis is developed. The overall model consists of a boiler, distribution system, an embedded tube #oor slab and building enclosure. The overall model is described by non-linear di!erential equations which were solved using "nite numerical methods. Two control strategies for improving the temperature regulation in RFH systems are proposed. These are: a multistage on}o! control and an augmented constant gain control (ACGC). Simulation results show that the multistage control maintains zone air temperature close to the setpoint better than the existing on}o! control scheme does. Likewise, ACGC gives good zone temperature control compared to the classical proportional control. The ACGC is shown to be robust to changes in weather conditions and internal heat gains. The advantage of the control strategies proposed is that they eliminate the use of outdoor temperature sensors required in some existing control schemes. Being simple and robust, the proposed control schemes are good candidate controls for RFH systems.