Welcome! Here are some tips for using this forum.
Williamson 5 in 1 anyone know the model number of the outdoor units
Any 1980's guys out there that know the model number on a Williamson 5 in 1?
My utility has a small kicker when we are downsizing. The name plate vanished years ago. Old system was a 30 amp and new system is a 20 amp, so my grand assumption is the we are smaller, hence the incentive through mass save
Wilson Services, Inc