Colt Caloris provides air-conditioning solution for Luton Hoo hotel conversion

Colt International's Caloris WRF (water refrigerant flow) air-conditioning system has been installed in the 5-star Luton Hoo hotel, a Grade 1 listed stately home close to Luton Airport. It is being restored by Elite Hotels to provide 144 luxury rooms in 17th century surroundings. There are separate Caloris systems for the Garden Wing and the Orangery. Both systems use horizontal indoor units of various sizes for each room. There are five outdoor units. Because Caloris systems use water to connect each unit, only a small amount of refrigerant is needed, and this is in the outdoor unit. There is thus no need for a refrigerant leak-detection system. If required, the system can readily be linked to a ground-source heat pump at a later date. The units in each guest room are very quiet, and each is fitted with its own simplified controller. Built in 1767 for the third Earl of Bute, Luton Hoo stands on more than 1000 acres of listed parkland and gardens, including an 18-hole golf course. It is due to open as a hotel this Autumn.

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• www.coltinfo.co.uk