Radiant floors as a feasible solution for residential heating and cooling: a simulation-based performance analysis

Radiant floor systems are widely used for the heating service, but could also be beneficial for cooling applications, allowing for higher heat pump efficiency. However, concerns about humidity control and the risk of surface condensation arise in cooling operation.

This study develops a TRNSYS-based building model integrated with a specific R-C model for the radiant floor. Several residential typologies in different climates are simulated year-round. The results show that heating is effective regardless of climate severity, whereas the feasibility in cooling is significantly constrained by the ambient humidity. Stand-alone radiant floor cooling appears to be fully viable in dry and moderately humid climates but requires integration with dehumidification devices in more humid regions.