Dolan Oil has just installed a new gas furnace/domestic water tank system to replace our old oil boiler and hot water heater. It was not an easy install by any means, our house is over 200 yrs. old and has issues. We can not say enough about the wonderful techs who installed the system, Jeff Dolan who quoted the job, and the delivery man who filled our new propane tanks. Whenever we contact the office staff they are always very courteous and knowledgeable. We like the family run business integrity, and highly recommend Dolan Oil Service.