Bbb rating is based on 13 factors. Corgi said it continually reviewed processes and performance and had introduced further measures to track work completed. Eco- friendly heat only boilers. Unit c1, anchorage business park. Just this past month we got a call from a couple who found that the water heater had sprung a leak and was leaking all over the basement floor the water heater, which was over 30 years old, was well past its typical usage period and needed to be replaced when it sprung a.