refrigerant - the refrigerant number installers in Navan argue about.
Two bids can look similar while assuming different refrigerant values; the cheaper one often specs down. Ask for the figure in writing and check it against the manufacturer datasheet before you sign.
Rathaldron, Navan Town Centre and Ardbrack: Year-round emergency plumbing demand in Navan. Population around a steady base keeps emergency plumbing demand steady. Quotes via the boilerrepairnavan network.