Portsmouth Gas's attention to service and detail has made us an industry leader. With a wide range of products and services to choose from, you're sure to find exactly what you're looking for! If you require assistance, our qualified staff will provide you with expert guidance. We're looking forward to working with you! Portsmouth Gas is your local company dedicated to being the number one gas service in Portsmouth. We are approved installers for lots of the boiler manufactures, meaning we can offer extended warranties up to 10 years!