I'd appreciate any advice / opinions on the original post, when I saw all the replies thought there'd be a wealth of information but unfortunately not
We cannot give you concrete advice as we don't actually know what your potential bungalow looks like.
Heating systems
- gas to me is the best, clean and efficient
- oil is next best
- electric heating is the absolute worst, place never feels warm, never seen any type of storage heater or electric heater that actually made a place seem warm
- heat pumps, no idea, but cannot figure out from what I’ve read if they make sense or not, and don't actually understand the concept
Gas
Literally instantacious heat and hot water, house feels warm, in cold weather feels warm very quickly after heat goes on, my favourite, and there is nothing better than a gas hob. Cannot think of a single downside.
Oil
Second best, house feels warm, depending on size of house and insulation, in cold weather house can feel warm very quickly. Not as clean as gas, but nothing to bother me. It requires an immersion (ask Des Bishop)
Electric
The absolute worst type of heating. House feels cold. Very fiddly as regards storage heaters, somehow the electric heaters just never, ever seem to heat a room properly.
Windows & Doors
No doubt about it but modern double glazing make a massive difference to a house. Instantly you can feel the difference when installed.
Insulation
Having spent an absolute fortune on taking a house back to it's core recently, and putting in really excellent damp proof courses, including incredible amounts on doing the flooring, I mean the core, worth every penny. House feels warm without any heating. Helped by a lot of thought into orientations as regards doors/windows/openings/sun.
Personally think insulation is the most important of all.
SSEIA Grans
We looked into this. A complete scam if you ask me. Made zero sense to us. The companies that will do it for you want you to go with them, the grant is built into their profits. Making is unfinancially attractive.
Attic
It's a no brainer to insulate the attic
Electric showers
An Irish speciality, along with the Brits. Seriously! Awful! Better off direct from gas or from the immersion (nowadays called something else. ) .
Chimney's
Who doesn't love an open fire, but they are filthy, require work, require fuel purchase and storage. You said you're getting rid of it for space, top idea. Been in a couple of places where no matter how much coal one puts on the fire the heat was going everywhere but into the room !!
Heat Pumps
No clue. But it's something we have to look into for next project. Poster OKGO sounds very knowledgable. Found his/her post very informative. He's given you advice to
go talk to a proper expert. That's your first step.