When we moved in to our present property, many years ago, we had oil fired (virtually paraffin) central heating. I changed that to a pressure jet boiler and built a little brick lean to for the boiler. The tank I changed to a 600 gallon tank situated at the front fence, about 90 feet from the boiler. I dug a trench for the oil pipe. We had lots of disruption inside whilst I ran pipework and fitted new radiators.
I retained this setup after gas arrived in the village until the oil tank began to weep oil when I had a gas boiler fitted in my "boiler house" and connected to my plumbing. No disruption as a "mole" was used to get the gas pipe from the street to the property.
I have just had the boiler and all the plumbing and radiators replaced (bit old and infirm to undertake this myself now). Little disruption as the boiler is still in the boiler house and the plumbing was done one room at a time. I do have to get a lot of decorating done, but only because I had fitted skirting radiators in my old system.