With a heat output of 30kW, this is the most powerful in Ideal's Logic Heat Only regular boiler range. The Logic 30 is very similar to the Logic+ 30, but it's a little cheaper to buy, and has a shorter parts and labour warranty. Ideal has its own team of servicing engineers to deal with problems. This condensing gas boiler is compact enough to be installed inside a kitchen cabinet, and boasts a digital display and simple-to-use dials. Read our full review to find out how well Ideal boilers scored in our most recent owner satisfaction survey, and whether the Ideal Logic Heat 30 is the right boiler for your home.