My Brother in law runs his own company cleaning air conditioning systems. Although he doesn't supply them, he has given me some good advice.
He advises that a full air conditioning system is quite an expense and not necessarily the most effective for a shop (he saw the size of ours!). The most effective way is to buy a portable unit from B & Q, Homebase, Focus etc and use that.
He told me that a full a/c system would cost around £15,000!!!!!!!
