That depends on the size of your system and the repayment terms you choose. As a rough guide, a single split system for one room typically starts from around £1,500 installed, which could work out at just over £125 a month on 0% APR over 12 months. For larger multi-zone installations, you can spread the cost over up to 120 months to keep monthly payments manageable. Use the calculator above to get an estimate based on your project, or give us a call on 0800 009 6300 for a free quote.