You could dampen the air the old-fashioned way. Our firm, C & C Service, LLC, of Stamford (www.ccservicellc.com), has worked with a client who bought a home built in 1898, intending to do a historical restoration. The project included extensive decorative-plaster work and the installation of marble and parquet wooden floors to replicate the original design. The main challenge was heating the residence with old-style radiators while maintaining the proper humidity levels for the construction elements and—what’s most important—for the artifacts that would furnish the home.