National Refrigeration provides residential and commercial cooling, heating and plumbing services in Rhode Island. As a full-service HVAC and plumbing contractor we can install, maintain, and repair your furnace, boiler, central or ductless air conditioning, and more. Our licensed, bonded and insured plumbing and HVAC technicians will help you make informed decisions about repairs, upgrades, or replacement of your water and HVAC systems. Trust National to protect your property and family.