Hydrosci LLC.

Between 2015 and 2018, Hydrosci did prevailing-wage public work for Spokane County Fire District 4, the Foundation for the Challenged and the Washington State Department of Commerce, mostly as a subcontractor to other builders. Much of its work comes through general contractors, and its jobs span residential, commercial and public buildings. The company says it designs and installs hydronic systems and offers performance-based system warranties. It also describes itself as family-owned, veteran-owned and woman-owned. The state lists Greg Rehn as a principal since 2008. Hydrosci suits a homeowner planning a full hydronic heating and plumbing retrofit, someone putting radiant heat under a new slab or addition, or a property owner weighing a ground source heat pump or solar thermal setup. The work centers on custom mechanical and thermal systems. It's a different kind of contractor from a framing or drywall outfit, and it isn't geared toward quick drop-in service calls. Heating work in Spokane bunches up in fall, when the first cold snaps send people looking for boiler repairs and new systems all at once. Radiant floors and ground source loops are easier to plan in spring and summer, when slabs can be poured, trenches dug and the old system shut down without leaving a house cold. For a designed hydronic or geothermal system, start talking with a contractor months before the heating season. If the job is part of a larger remodel or new build, bring the heating contractor in early so the general contractor can schedule the piping before floors and walls close up.