Make sure to read thoroughly the contract before signing it. For domestic customers, the contract periods are usually not longer than 2 years while for commercial clients the contract is between 1 – 5 years. If there are things or clauses that you don’t understand, never hesitate to ask the esso LPG gas supplier. The company should be able to discuss with you the details of the contract, from the prices to the duration of service. Be sure the term of the contract is specified to avoid misunderstandings.