tonnage - the tonnage number installers in Kilkenny argue about.
Two bids can look similar while assuming different tonnage values; the cheaper one often specs down. Ask for the figure in writing and check it against the manufacturer datasheet before you sign.
Gardenview, Newpark and Kilcreen: Local housing mix shapes emergency plumbing specs here. Population around a steady base keeps emergency plumbing demand steady. Updated for boilerrepairkilkenny searchers.