Dewpoint Rooms

Moisture Action Plan: condensation margin, ventilation verdict, dehumidifier sizing, dry-out steps, and field boards.

Dewpoint Rooms is an offline dew-point, humidity, and moisture-control workbench for basements, bedrooms, workshops, cellars, kitchens, job sites, grow rooms, and rooms where temperature and moisture matter.

Enter temperature and relative humidity to understand dew point, wet bulb, grains per pound, absolute humidity, condensation risk, comfort, mold conditions, room targets, and preservation ranges. Log rooms over time, compare readings, and export reports without an account or internet connection.

PRO MOISTURE ACTION PLAN The new Moisture Action Plan turns readings into a prioritized dry-out plan. Add indoor temperature/RH, coldest surface temperature, outdoor air, room volume, target humidity, tightness, and air-change goal. Dewpoint Rooms calculates:

• moisture readiness score
• condensation margin
• indoor/outdoor grains comparison
• whether ventilation helps or hurts
• recommended dehumidifier class
• required CFM for target ACH
• mold and IAQ risk
• right-now, 24-hour, and one-week action steps

PRO FIELD BOARDS Twelve high-resolution offline field boards cover basement dry-out, window condensation, crawlspaces, HVAC latent load, wood movement, cellar preservation, bath/kitchen exhaust, concrete cure, grow-room VPD, bedroom comfort, heat safety, and client reporting.

ROOMS AND REPORTS Track multiple rooms with target RH bands, 30-day temperature/RH charts, mold-risk timelines, IAQ scoring, CSV export, and offline PDF site reports.

TOOLS INCLUDED

• Dew-point and vapor-pressure calculator
• Condensation predictor
• Psychrometric-style comfort chart
• Air properties with altitude correction
• Dehumidifier and ventilation sizing
• A/C delta-T diagnostics
• Manual J Lite sizing reference
• Mold timeline planner
• Concrete cure tracker
• VPD calculator for plant environments
• Heat safety WBGT / work-rest guidance
• Wood EMC and drying planner
• Sourdough, fermentation, cellar, humidor, and sleep comfort tools

Dewpoint Rooms is private by design. It has no account, no ads, no analytics, no tracking, and no developer cloud. Rooms, readings, notes, exports, and reports stay on your device unless you choose to share them.

The app provides educational estimates and planning guidance. It is not a substitute for certified HVAC design, laboratory testing, medical advice, structural inspection, or professional remediation.