Sign up to which? legal for clear, step-by-step advice on problems big and small. Ash from boilers fueled strictly by oil and coal may be subject to disposal requirements at the state level it is not regulated as hazardous waste at the federal level. Lastly, there must be an existing low-efficiency boiler within the property all boilers are rated by their energy efficiency most modern units will work at around 90% efficiency (only losing 10% output.
Added: 2020-05-08 | Comments: 0 | Category: one