The answer to 'boiler freezing up' is that a frozen boiler is a common issue, often caused by a lack of proper maintenance or extreme cold temperatures. Symptoms can include the boiler not heating up, strange noises, or water leaks. Solutions may involve thawing the boiler, insulating exposed pipes, or addressing underlying issues like a malfunctioning thermostat or low water pressure.
In many cases, dealing with a frozen boiler requires the expertise of a professional HVAC technician. Attempting DIY repairs on a frozen boiler can be dangerous and may cause further damage. It's best to call a qualified technician who can properly diagnose and fix the problem to prevent more serious issues down the line.