seer rating - the seer rating number installers in Navan argue about.
Two bids can look similar while assuming different seer rating values; the cheaper one often specs down. Ask for the figure in writing and check it against the manufacturer datasheet before you sign.
Johnstown, Aerodrome and Rathaldron: Serving Navan and the wider County Meath area. Local housing mix shapes emergency plumbing specs here. The boilerrepairnavan listing tracks local availability.