Welcome to P.R. Douglas Co., Inc.

and Formal Oil Co., Inc.


We are a fully licensed and Insured for all Oil and Gas equipment service and installation.

 Service Area:
We service all of Greater Boston!














This is an oil to gas conversion.  We removed an oil fired boiler and installed a new high-efficiency boiler, recieving an AFUE rating of 95.0%

This was an oil to gas conversion.

A Burnham™ oil boiler to a new

Burnham™ "Alpine" boiler.

                       BEFORE                                    AFTER 

This new Weil McLain™ Boiler replaced

an old Arco-Liner boiler

                       BEFORE                                    AFTER