Hi.  I wanted to share a post about the excellent work that our technicians perform.  These photos are of a Monitor 40 before and after.  The customer did not think it was the same heater.  You may purchase a rebuild kit and do it yourself or bring your heater to our shop and have the technician rebuild it for you.  Shop labor is only $59 per hour and they do a GREAT job and a rebuild usually takes 2 to 3 hours.  Don't throw out your old Monitor Heater, rebuild it for much less than half the cost of a new one in most cases...often closer to 1/3 the cost of a new one.  Please contact us for details.