1 Lug (BeoÄin), a village in Serbia. 2  Lug, County Offaly, a townland in the civil parish of Durrow, barony of Ballycowan, Ireland.  Lug (Derventa), a suburb in Bosnia and Herzegovina region Bosanska Posavina.
1 If you are keeping the same type of boiler (e.g. if you have a existing combi boiler you are replacing it with a new combi), the price to buy and install it will start at about Â£1300 provided there are no real plumbing adjustments required.pproximate starting prices are discussed below: 1  If you are keeping the same type of boiler (e.g. if you have a existing combi boiler you are replacing it with a new combi), the price to buy and install it will start at about Â£1300 provided there are no real plumbing adjustments required.
Gas Boiler. Gas boilers are typically very large and used to heat large buildings rather than a home. Replacement costs of a gas boiler can range from $2,500 to $4,000 for a mid-efficiency boiler and $5,000 to $9,000 for a high-efficiency boiler making them significantly more expensive than a gas furnace.ingle stage, 80% efficient gas furnaces typically cost $2,000 or higher, moving up to a 90% efficiency range of this same type can cost $3,000. To move into the 95% efficiency range with a multi-stage or modulating furnace that feature variable speed blowers can cost $5,000 to $7,500.