afue - the afue number installers in Letterkenny argue about.
Two bids can look similar while assuming different afue values; the cheaper one often specs down. Ask for the figure in writing and check it against the manufacturer datasheet before you sign.
Coolaney, Lisfannon and Ballybofey (adjacent): Population around a steady base keeps emergency plumbing demand steady. Local housing mix shapes emergency plumbing specs here. Maintained by the plumberletterkenny desk.