Domestic a/c upgrade We were impressed with Cordell Engineering from start to finish. Lloyd was very supportive and thorough during the initial, and unexpectedly demanding, planning phase, which exercised patience and required assistance during a lengthy and frankly painful approval process with the Council. When work finally began, with Tyler, Ollie and Albie, removal of nine old internal a/c units and three old external floor mounted condenser units, then installation of four new internal a/c units (reducing scope to bedrooms only), and a single wall mounted external condenser unit in replacement, (with acoustic enclosure), took just three and a half days. They were always on time, keeping us informed of progress, including raising a few issues with us as they arose, and better still, giving us options to overcome them. Their work was neat and tidy, clearing up and taking waste / rubbish away at the end of each day. We felt we were in very capable hands, and strongly recommend Cordell Engineering Ltd. Thanks, David & Rachel, Twickenham