Your Energy Saving Questions Answered

We put your questions to James and Nick, from solar panels and boiler efficiency to wind turbines and external wall insulation. Check the description to jump to the questions you’d like to hear answered.

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1. What is the difference between solar PV and thermal? 1:40
2. How do I know if I have a cavity wall and whether or not it’s insulated? 3:20
3. How can I find out my boiler’s efficiency level? 5:15
4. Are free solar panels a good idea? 8:18
5. Is external wall insulation dangerous? 9:52
6. It is cheaper to keep my heating on all the time? 12:48
7. Should I replace my conventional boiler with a combi? 15:45
8. What is the difference between a vented and unvented cylinder system? 17:17
9. Should I get a wind turbine on my property? 18:15
10. Who should I contact to get gas connected to my property? 19:28
11. How do thermostatic radiator valves work? 22:01
12. Where can I get a new back boiler? 24:22
13. Can I get an air source heat pump for free? 25:40
14. What is the cheapest kind of insulation for lofts? 28:08