Holliston Oil Service is a provider of fuel services and installation to customers in Metrowest Massachusetts. This business services and installs all kinds of air conditioning and heating systems. Residential clients are serviced. Systems serviced and installed include oil-fired water heaters, hot water tanks, residential oil tanks and tankless coils. This business is accredited by the Better Business Bureau. In addition to HVAC services, this business also offers customers diesel, heating oil and kerosene fuel.