Pinnacle Piping and Service of Dorchester is a full-service HVAC contracting company. We specialize in design, installation and service of refrigeration, heating, air-cooled and chilled water systems. We also provide emergency services, custom maintenance plans, welding, piping, retrofits, equipment start-ups and balancing. Our focus is on the needs of our customers, whether installing or replacing a rooftop unit, walk-in freezer, air-cooled chillers, or computer room systems. Call 781-335-6446.