Scottish Gas Networks (SGN) is due to replace 2.6km of existing metal gas mains and services with new modern plastic gas pipes across the town, with the total project costing £470,000.
A statement from SGN said that the work would ensure “continued safe and reliable gas supplies for many years to come”.
The works will go ahead in three stages and customers may experience “a short time without gas” as SGN upgrade the service pipes around residential homes but say their engineers “will always give prior notice of this”.
The first stage of the work begins on January 5 and is expected to last for about a week.
Temporary traffic lights will be in place as one team will be working at the B1348 and Prestongrange Road junction, while a second team will carry out work on Middleshot Square under a full road closure.
The second phase is due to go ahead on January 12 and last about three weeks, with both teams moving into the residential streets within the wider Grange area.
Works will then begin in the third phase on High Street on February 12, where temporary traffic lights will be in place for the about three weeks.
The works were agreed with East Lothian Council
The work forms part of an ongoing mains replacement programme developed with the Health and Safety Executive.
Access will always be given to driveways and entrance gates unless previously agreed with the occupier.
SGN says it has written to residents and other local stakeholders to make them aware of the project and explain the details of the work.
A spokesperson for SGN said: “In the New Year, we’ll begin work to upgrade our gas network in the Prestonpans area.
“This work involves replacing our old, metal gas mains with new plastic pipes, ensuring a continued safe and reliable gas supply for the community for many years to come.
“Our project has been split into phases to reduce disruption as much as possible.
“Temporary traffic lights and road closures will be in place at times to ensure everyone’s safety whilst our work is carried out.”