Anthony and his team are top notch he personally came out with crew for my repair and with his bright eyes and kind soul i knew i was in good hands thanks!! For the maximum total equivalent flue length please refer to the installation instructions. See what our satisfied customers say about us—and find out why so many of our , reviews are stars! Check back often to see what current specials we are running to help you save money on comfort. Are there any downfalls to combi boilers?.