We have a combi 160 gas boiler, installed by a licensed professional in the winter of [protected]. This tankless unit was installed to provide our residential hot water and radiant heat. The system has never worked correctly... Always had a 'hard start' making an awful groaning noise that shook the walls of our house, that couldn't be resolved. Over the past year, the system has become completely unreliable. It constantly displays a code of l01, which prevents it from starting and heating. Almost every professional that we called refused to work on this unit. We finally found one, who came to work on it over a month ago - he had assistance from a technician from your company. We have been reaching out to him since the problem has intensified, but he obviously isn't interested in working on it again. For the past two weeks, we absolutely cannot keep our unit running. This results in no hot water, no heat. At first, we could hit the reset button and the unit would stay on for what seemed like one cycle. Now, hitting the reset button doesn't even work! We live in northeastern pennsylvania... It is the middle of winter and we can't get our boiler to run. We can't get a professional to come back to work on the unit. This is beyond frustrating and upsetting; but even more upsetting is that we can't get reach out to pb directly except by using the contact form, to which nobody responds. We need help!! This morning, it is 11 degrees... Can't get the unit to light. It will be in the single digits overnight for the next week. No shower... No heat! After a year of attempting to fix this latest problem, we need to replace this with something that actually works. At the time of install, this was one of the most expensive units, but was supposed to be one of the best... It has proven to have been one of the most expensive units... But didn't end up being one of the best. We need something that is dependable and something that if a need arises, a licensed professional will actually work on and be able to fix. We need to hear from someone at pb!