Hi Chris, Could you advise a first time buyer on what copper pipe, insulation material would be best for me and I would have to do trunking and dismantling of old air con. How much do you charge for power point and stainless steel bracket too? Interested in Mitsubishi Starmax System 2, HDB 4-room flat but still in doubt if i should go for heavy industries due to the energy savings factor. Thank you for your time!