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We have a new building which is quite isolated and getting on mains gas is going to be prohibitively expensive. So we are taking the view to over-invest in insulated plasterboard and go with the oil tank and boiler. But is the below a decent price? SUPPLY AND FIT NEW GRANT EXTERNAL COMBINATION BOILER. SUPPLY AND FIT PLUME DEFLECTION KIT. SUPPLY AND FIT ALL PIPEWORK AND FITTINGS NECESSARY FOR CENTRAL HEATING INSTALLATION. SUPPLY AND FIT NEW GRANT MAGNETIC FILTER. SUPPLY AND FIT ALL RADIATORS AND RADIATOR VALVES AS NECESSARY. SUPPLY AND FIT NEW BUNDED OIL TANK 1800L. SUPPLY AND FIT NEW BASE FOR TANK. SUPPLY AND FIT FIRE SAFETY VALVE. SUPPLY AND FIT TIGER LOOP, AIR FILTRATION. SUPPLY AND FIT OIL LINE FROM TANK TO BOILER. SUPPLY AND FIT PROTECTION BOLLARDS FOR OIL TANK. CARRY OUT FULL COMMISSIONING OF CENTRAL HEATING SYSTEM TO INCLUDE DOSING WITH CHEMICAL INHIBITOR. AS A G1 INSTALLER CUSTOMER WILL RECEIVE EXTENDED WARRANTY ON BOILER. TOTAL: £14,900

I currently have an outdated oil fired heating system and I need to replace the boiler, oil tank and pipework etc. I have been in touch with a Air source heat pump provider who quotes a flat £14995.00 install for and ecodan 8kw heat pump, 170 litre hot water tank, 10+ rads etc. Having had a survey done I am due to meet with a sales manager to finalise details. In regards to RHI I have been advised I would receive just under £11K from RHI over 7 years. I have a detached 5 bed house and wondered if this is setup would be suitable and if £15K is about right Any advice would be appreciated, thanks

Hi there Just starting out on a house build and find there are A LOT of decisions. Planning permission has been granted but that's as far as I am. I would appreciate some thoughts on heating systems. Plan is a high level of insulation (eg CWI: 150mm thick Kingspan Eco Bead / Quinn lite block, Floor: 100mm foil backed polystyrene) , triple glazing (uPVC frame) UFH for downstairs and radiators upstairs. I've considered Heat Pumps but I am being recommended OFCH - specifically Grant Vortex. In looking at this option I came across Hybrids and wondered if anyone had experience of this: Grant VortexAir Range: https://www.grantuk.com/products/hybrids/? I live in NI so there are no grants available to apply for... Any advice appreciate Meabh

I have been avoiding this post for a while and also been busy doing other things at the house. I need to sort out my heating design and it is proving difficult with varying opinions here in the land of the hotpress. I have a plumber who I am relatively happy with and comes highly recommended we just need to bottom out the design somewhat. Above is the floor plan and I have posted on this previously a long time ago, never thought it would take us this long to get to the point we are at. We are going to have UFH throughout along with towel rads in bathroom/en-suites, feature radiator in reception (I don't anticipate this putting much heat out) and provision for radiators in the garage. This will all be fed from an oil boiler (gas is not an option, ASHP I have ruled out and PV wont be happening). I understand that oil and UFH are not conducive for optimum performance but measures can be taken to alleviate this. The default position with almost all plumbers and heating designers here is to just feed the UFH via blending valve straight from the boiler, I hear @Nickfromwales scream what about short cycling on a boiler that cant modulate like a gas one (I have read plenty on here already). Some just don't get it is all I will say. Others agree to disagree. My options are as I see it:- Oil boiler with buffer and UVC. Question here is what size of buffer? It was suggested to me 500L but that was then going to also feed a UVC which I couldn't quite get my head around. Other option as I understand would be a 400/500L thermal store to do the lot. Any time I raise this in discussions no-one understands why I might do this if I have no wood burner etc dumping heat into it. Are there any other options? I dont really understand it all myself and my head has gone to mush with all the reading I have done. I fear my plumber may run for the hills if I dictate too much of the design to him. Please help!