Before anything else, check if the thermostat is set up to heat and if it's on the right temperature. Don't forget to check if everything is correct with the power on the unit. If it still seems to be a problem, contact professional help immediately. That's the easiest way to learn exactly what is wrong with your boiler and how to get if back in working order quickly. Our professionals will answer all your questions about the project and schedule the best time to do it, all suitable to your requests.