I have an air con unit in my room. £300 and worth every penny. If it’s too hot I can’t work at all. Now I work in a nice cold room. Clients find this good as well.

You can’t travel with it but it’s portable in the home. It doesn’t have to be installed. It uses a hose to expel the hot air. You just put that out the window. Or if I’m feeling too conscious of neighbours hearing with the window open then you can direct the hose out of the bedroom door and down the stairs. Room still remains cold.