Keep one coordinated design record
Ask the building and geothermal teams to work from the same current plans. Ground-loop design, equipment selection and distribution should not rely on conflicting versions of the house. Keep approved changes, final collector routes and commissioning records together. Establish which site, mechanical, electrical and drilling approvals apply before scheduling the work.
Coordinate the site, drilling and building requirements
Washington Ecology provides a notice process for ground-source heat pump borings. Have the project team confirm the current drilling requirements and the local site, mechanical and electrical approvals that apply. A loop design and an equipment selection do not replace those checks.
See the broader geothermal heating installation options at Everett Geothermal Heating.