sub7even75

Sorry maybe I didn't explain well enough. The system is air source, so top of stairs has ceiling vent, outside pump/AC unit. We can switch between heating or air conditioning. House has to circulate the air vented into each room then recycled back to be warmed via the ceiling vent at top of stairs Like I said great system in a very air tight insulated house but when your walls are single skin no insulation the heat is escaping and the system never works efficiently as it's always fighting to get the temperature to stay at the thermostat setting. Expensive at current rates.

Thanks for your comments guys. Regarding the ASHP. The problem isnt the set up, its the heat loss through single skin walls. To be really efficient insulation is key, otherwise the system is always fighting the heat loss. Electricity being so high does not help either. I have a well insulated loft, new double glazing all round and new composited front door. These systems just dont work well with old houses, the government likes you to think everyone can have them, but rising costs and houses you cannot insulate unless you go external just dont work together. I have thought of many different systems, the only problem is space. Have no airing cupboard, only space for this is the loft and Im trying to keep away from there. Its a bit of a nightmare to be fair. The house has been done up so contemporary and modern theres just no place for anything. A headache that my wife makes worse lol.

Hey, So I have a house around 100 years old, so no cavity walls, cold in the winter. The previous owner some years back fitted an Air Source Heating System, so we have vents into every room. The old gas system was removed. Now he was a heating engineer and I guess 15 years ago, 1 - electric was cheap. 2 - Insulation may not have been a huge factor when fitting these systems. Old house + ASHP = crap efficiency. My idea is to maybe have a combi boiler fitted - position to be decided (outside wall) just to run a radiator system. I currently have a cold water/hot water tank in the loft which I would like to retain. I do alot of the work myself but with heating, plumbing I bring in the specialists, but before moving ahead I need clarification on some things, I need help 🙂 1. Can I fit a combi boiler and maintain the tanks in the loft? So the combi just runs a radiator circuit?. 2. The tanks for hot water are fine, as I also have a digital shower system in the loft that runs from them, and an extra pump for the hot water to the bathroom as we have a free standing bath and the taps needed the pressure for the hot. 3. Can a combi boiler be mounted onto a SIP as the gas point is on a wall of a small conservatory which I plan to remove and rebuild the top half (on the brick wall) with SIPs and clad etc, new roof slate with insulated cavity which I am thinking I can run the hot pipes in to the upstairs to start the radiator runs, as I can take the floors up between the rooms to hide the piping. (Sorry this might be to much info). I guess I cannot really move on unless running both systems is possible. If its possible, the logistics I can work out. Thanks for reading I look forward to any help. Simon

Thanks for the replies, thats put me in the right direction.

Hi all, So I have a framed plaster boarded chimney breast, I will be removing all this to open up the fire place for a log burner, the missus wants split face tiles to make the breast a feature. My question is fire proof backer board to tile on, or tile straight onto brick (assuming they are even etc). Any advice would be aprreciated.

My mistake I did mean Fujitsu, no idea why I put Mitsubishi. Yeah has the big box in loft with vent into hall upstairs.

Hello, Thanks for your reply. Yeah its that system. I think around ten years old. Prev owner was heating engineer think he saw the potential in the system but didnt factor in some things. I plan to add insulation throughout the loft, and where I have a boarded out section is to raise that above the insulation so as to have a storage area still. The ducting runs around the edge and at each end where I do not need to get to anything. My worry was is this ok to do. finding this site has been a godsend. Another question someone may be able to help with. The actual system in the garden must be ten years old at least, are the newer systems more efficient?. Mine is mitsubishi see pic

Hi, My house I brought is 1920's and previous owner fitted ASHP air system only for heating. Now house insulation is poor so why it was fitted I do not know but this was around 10 years ago. My question is in my loft the ducting runs all over, is insulated. But the actual loft insulation is very poor. Can loft insulation be laid over the insulated ducting, or would this cause potential condensation issues?. Any help would be really appreciated.