A parameterization of hurricane-induced mixing is incorporated into a coupled climate model of intermediate complexity. In our model, transient diapycnal mixing representing the aggregate effect of tropical storms is added to a background field of diapycnal mixing; the strength of this transient mixing is a function of the potential intensity of tropical storms, which in turn varies with the climate state. Neither this source of mixing, nor this potentially significant climate feedback, is included in current state-of-the-art coupled climate models. We examine results of hypothetical 21st century simulations where CO2 increases at 1% per year. Our results suggest that transient mixing from tropical storms might play a significant role in the location and magnitude of ocean heat uptake in a warming climate, particularly as the potential intensity of tropical strorms increases. Moreover, we find that the pattern of ocean heat uptake in our model is arguably a better match to observed ocean warming in the past 50 years, in comparison with a version of our climate model without this parameterization. Changes in the model's large-scale ocean circulation in the 21st century are also compared with and without the effect of hurricane-induced mixing.