BACKGROUND OF PURCHASE OF HIVE PRODUCTS: I'm in the process of fitting new Hive TRV's. I'm disabled so I'm sure this is worth the money in my particular case. I bought 5 for £159.20 - so £31.84 each. I probably would have chosen a different product but I had already fitted the Hive Heating 2 kit. There are many terrible reviews about these TRV's but I'm guessing that people are generally not too clued up and therefore have a bad experience. I'm hoping I will not regret saying that - mine couldn't have been easier to fit and set up. I'm just waiting for the house to be cold enough so that I can run the calibration procedure. This is where others have mainly had problems but I don't see why and I am hoping I don't also have a bad experience as I've ordered another pack of 5! This will give me control of almost all my radiators direct from my bed. NOTE: I found them extremely difficult to remove! If you decide they are not suitable watch a YouTube video to show you how to remove them. If you are weak it will probably be near on impossible so make sure you have access to someone who can help if you need to return any. I did manage to remove one once but I couldn't do it a second time. I didn't hear the click that I heard when I fitted the second one so I thought I hadn't fitted the first one correctly. SYSTEM DETAILS: I have a dual heating system meaning a condensing oil boiler and a large woodstove which also heats the hot water cylinder and radiators. I know I have to make sure that I have enough radiators on so that I don't cause a major disaster. I think having these will enable me to turn lots of radiators down or completely off when I'm just using the oil. When I'm using the woodstove as long as I make sure that I have enough radiators calling for heat I don't see that it would be unsafe at all. Once the frequently used areas are heated up I should be able to then direct the heat to some of the rooms which are rarely used to keep them aired. I think Hive wouldn't agree with me fitting these TRV's with a dual heating system but I don't think it will be any different than having the Danfoss TRV's. I already have Danfoss TRV's on most rads. I know that I have to NOT fit any type of Thermostat onto two of my radiators - "heat leak" for safety purposes. PERSONAL HEATING METHOD: I generally just use the boost button for controlling my heating and turn the temperature up or down as required. So I don't think I will bother to set the Hive TRV's with heat schedules, or use the heat on demand setting. Hive state in the instructions that I shouldn't put Hive valves onto radiators which are situated in the same area as my Hive Heating Thermostat. Mine is in the hallway and I have two radiators in the hallway. I don't want to be continuously heating the Hallway - it's a complete waste of oil. I know I could leave the hall radiators turned down with Danfoss TRV's on them. However, I would have far better control if I could adjust every area of the house from my phone. If I'm not using "heat on demand" which really just means I am needing two steps instead of one as I need to press the boost button and then make sure the radiator of the room I'm in is set to call for heat and areas I don't want to heat are set below the temperature of each individual room. Also, currently, the "heat on demand" sets the heating to 22 degrees so this would be way too hot for me. So if I set the hall wall thermostat on 7 degrees and set the hall radiators on say 14 degrees surely the radiators would still be calling for heat and still heat up. Also I've forgotten what happens when there is a power cut. I know the woodstove side of things had been set up safely for a power outage and should just work on gravity. I'm not sure what would happen if I'm using the oil boiler and the new Hive TRV's. Sorry to be so long winded but I'm Dyspraxic and I find it difficult to be concise and it also causes memory issues so I have probably repeated things too. SUMMARY OF QUESTIONS: 1. Will the system still work if I fit the 2 hall radiators with Hive TRV's as wall room thermostat is also in the hall? 2. How will a power outage affect the system when running the oil boiler? 3. If the hall thermostat is set on 7 degrees and the hall TRV's are set on 14 degrees would they still heat up? Would the heating then turn off when the hall temperature reaches 14 as set on the radiator TRV's? 4. Any other advice or comments please. Thanks.