Sympower wrapped up a subsidised research project focussed on finding the opportunities of load balancing with heating, ventilation and air conditioning (HVAC) systems in households. The subsidy was provided by the province of North Holland, which offers support to several research projects in multiple sectors. Every year in January the province publishes a list of all subsidised projects. You can find the list from 2017 here.
Our research showed that, based on historic data from dozens of households and an analysis of previous frequency data, HVAC systems and heat pumps in particular, do offer opportunities for demand response.