Turn underfloor heating pump on or off with Homey

I have a Honeywell EcoHome heating system but the pump for the underfloor is always on. I want Homey to control this and my first thought is to only turn it on, every day for 1 hour when the outside temperature is above 18 degrees Celsius. I’m sure I can make this smarter so I was wandering if anyone had the same issue and has a smart solution for this.