IndoorComfortKit is built for household estimates from measurements a reader can take at home. The calculators are intentionally narrow: they help decide what to check next, not whether a room is certified safe or whether equipment is approved for installation.
Individual calculator and guide pages list their own last reviewed dates near the page content.
Source registry
This registry is generated from the source metadata used by the calculator and guide pages. The usage links therefore stay aligned with the pages that cite each source.
Portable dehumidifier capacity in pints per 24 hours, the published dampness-and-area capacity ranges, low-temperature cautions, drainage, placement, and household moisture-source checks.
The general 30% to 50% building RH context, a lower cold-season range to reduce window condensation, hygrometer monitoring, and household moisture-source reduction.
Capacity measured in pints per 24 hours, selecting capacity from space size and pre-dehumidification conditions, published broad capacity bands, drainage, and low-temperature cautions.
The general 30% to 50% RH context, hygrometer monitoring, household moisture-source reduction, and comparing dehumidifier capacity by space condition.
Foundation drainage, outdoor dryer venting, bathroom and kitchen vent fans, source reduction, dehumidifier placement, and general 30% to 50% RH context.
Capacity in pints per 24 hours, published dampness-and-area capacity ranges, bucket and drain options, low-temperature performance, placement, and product safety reminders.
Using a hygrometer to monitor RH, placing it near a dehumidifier when the unit lacks a readable humidistat, and general 30% to 50% RH context.
Published capacity ranges in pints per 24 hours by area and dampness, operating-temperature considerations, placement, and drainage options.
What it does not support
The site-defined basement watch table, a promise of daily bucket collection, diagnosis of water entry, or confirmation that a specific product will control this basement.
The page's site-defined upper watch band, room-pattern interpretations, or assurance that a room is dry, healthy, or free of hidden moisture.
IndoorComfortKit's choices at shared endpoints, actual daily collection, or a product recommendation for a specific room.
IndoorComfortKit's 50% to 60% watch interpretation, the page's above-60% actions, or a decision to buy equipment from one reading.
The page's site-authored situation checklist, a guaranteed RH reduction, ventilation safety for a particular home, or diagnosis of basement or wall conditions.
Actual daily water collection in a particular room, a guarantee of moisture control, diagnosis of the water source, or electrical and drainage approval.
IndoorComfortKit's repeatable occupied-zone placement workflow, a fixed settling period, cross-device accuracy, or diagnosis from a room reading.
IndoorComfortKit's choices at shared endpoints, exact capacity within a range, or a guarantee that a specific product will control a specific room.
The published room-area capacity table, an 8-foot-ceiling assumption, shade and sun adjustments, additional-occupant and kitchen adjustments, and the oversizing humidity caution.
The published room-area capacity table, the 8-foot-ceiling context, 10% shade and sun adjustments, extra-occupant and kitchen additions, and the caution against oversizing.
The published starting-capacity table, proper sizing, the explanation that an oversized unit may cool before removing humidity, and low fan speed on humid days.
The room-AC oversizing humidity caution, installation sealing and low fan speed on humid days.
Room air conditioner sizing guidance and adjustments for shade, sun, additional occupants, and kitchen heat.
What it does not support
IndoorComfortKit's shared-endpoint convention, a ceiling multiplier, or product and installation approval.
IndoorComfortKit's shared-endpoint conventions, worked bedroom scenarios, electrical suitability, or a product recommendation.
A diagnosis that capacity is the only cause, the page's contrast readings and cycle pattern, equipment condition, or a replacement recommendation.
A diagnosis of a particular AC, a universal fan or Dry mode setting, or our calculated examples.
Endpoint conventions, a ceiling-height multiplier, a Manual J load calculation, installation approval, or a product recommendation.
Moisture-source control, prompt drying, drainage checks, measuring relative humidity, and keeping indoor RH below 60% when possible and ideally between 30% and 50%.
Measuring relative humidity, keeping indoor RH below 60% when possible and ideally between 30% and 50%, controlling moisture sources, and responding to condensation.
Fixing direct water sources, drying wet materials, keeping indoor humidity low, and using dehumidification as one possible moisture-control measure.
Moisture-source control, keeping indoor humidity low, responding to condensation, increasing practical air movement, and drying wet materials.
General indoor humidity context: below 60%, ideally 30–50%, and responding to condensation.
Measuring relative humidity, keeping indoor RH below 60% when possible and ideally between 30% and 50%, moisture-source control, and responding to condensation.
Fixing leaks, drying wet materials, venting moisture-producing appliances, using bathroom and kitchen exhaust, improving practical air movement, and responding to condensation.
The importance of moisture control and responding to condensation and persistent dampness.
General household humidity guidance, moisture-source control and drying wet surfaces.
Moisture-source control, prompt drying, keeping indoor humidity low, responding to condensation, and using a dehumidifier when needed.
Using a moisture or humidity meter, keeping indoor RH below 60% when possible and ideally between 30% and 50%, and checking condensation and direct moisture sources.
Responding to condensation, reducing moisture sources and drying wet surfaces promptly.
The general moisture-control principle and the need to respond to visible water, condensation, and persistent dampness.
General moisture-control context and responding to condensation on windows, walls, and pipes.
Keeping indoor relative humidity below 60% when possible, with 30% to 50% as an ideal range, and the general moisture-control principle.
General U.S.-oriented moisture prevention context and the principle that indoor moisture control matters.
The general moisture-control principle and responding to condensation, leaks, and damp materials.
What it does not support
IndoorComfortKit's 50% to 60% upper watch band, the above-70% interpretation, basement diagnosis, or a dehumidifier size for a particular room.
IndoorComfortKit's 50% to 60% upper watch band, the page's repeated-reading actions, or a health, mold, safety, or building-condition verdict.
Any pints-per-day sizing value in this chart, the site-defined dampness categories, product selection, drainage design, or electrical approval.
The Magnus approximation, calculated dew-point values, the 12 C comparison surface, or the table's site-defined room interpretations.
The calculated window table, a winter target for every building, or the site's observation workflow.
The site's 50% to 60% observation band, the timing and room-comparison protocol, or a pass/fail health, mold, safety, or building threshold.
The site's nine-step order, its recovery-time interpretations, outdoor-air decisions for a specific climate, or proof that a room no longer has hidden moisture.
A guarantee that any passive humidification method will reach a chosen percentage.
An AC diagnosis, a universal recovery time or the site's comparison workflow.
A dehumidifier capacity, a purchase decision from one RH reading, diagnosis of hidden moisture, or confirmation that equipment will solve an active water source.
A universal sensor height, settling time, placement protocol, device accuracy, calibration interval, or room-safety interpretation.
The site's observation workflow, a dew-point calculation, rain-entry or glazing diagnosis.
The site's pint/day rules, product sizing, drain approval, electrical safety, cleanup approval, or performance guarantees.
The Magnus approximation or the site-defined dew point bands. EPA is general moisture-control context, not the source for the Magnus approximation or the site-defined dew point bands.
IndoorComfortKit's action labels or official safety, health, mold, building-inspection, or equipment thresholds.
The score formula, 23 C and 45% RH planning anchors, dew point penalty, grade boundaries, comfort certification, or HVAC design.
IndoorComfortKit's humidity and dew point status bands, a mold-risk threshold, medical advice, building-safety approval, cleanup approval, or HVAC thresholds.
The following values organize room-level estimates and repeat observations. They are disclosed separately because the official references do not define these site rules.
Humidity observation bands
About 30% to 50% RH is the preferred everyday target. The 50% to 60% upper watch band and the repeated-reading actions above 60% are IndoorComfortKit room-observation prompts, not official health, mold, safety, or inspection thresholds.
Dew point reading bands
The Magnus-form calculation is source-based, while the labels used to interpret a calculated dew point and the sample surface comparisons are IndoorComfortKit planning rules.
Indoor Comfort Score
The 23 C, 45% RH, and approximately 16 C dew-point anchors, all deductions, rating boundaries, and the 0-to-100 clamp are a published site heuristic rather than an official comfort or safety standard.
Room AC planning comparisons
The published ENERGY STAR table and room adjustments supply capacity. IndoorComfortKit assigns shared area endpoints to the higher band and includes the final 2,500-sq-ft endpoint. There is no ceiling multiplier.
Dehumidifier table endpoints
The calculator returns ENERGY STAR capacity ranges. Exactly 2,000 sq ft uses the larger group; 75% RH starts very damp and 90% starts wet. These shared-endpoint decisions are site conventions, with no within-band interpolation.
Indoor humidity and moisture
The humidity and moisture pages use the EPA mold and moisture guide as general U.S.-oriented background. The practical reading is simple: moisture control matters, repeated dampness deserves attention, and direct water sources should be fixed before relying on equipment.
The site uses site-defined household reading bands: a preferred everyday target around 30% to 50% relative humidity, an upper watch range around 50% to 60%, and extra moisture or condensation checks when readings persist above 60%. These bands are room-check prompts, not official health, safety, building inspection, mold testing, or HVAC thresholds. Local climate, building assemblies, ventilation habits, and season can change what is realistic.
Dew point
The humidity calculator also converts RH after a temperature change and solves a missing temperature, RH, or dew point. It uses the same Magnus constants (17.62 and 243.12 °C), without rounded intermediate dew points. Temperature changes assume constant pressure and water-vapor content per dry-air mass. Saturation stops the unchanged-moisture interpretation; the tool does not predict condensate or final room RH after mixing. Below-freezing RH is referenced to liquid water, not ice. See the formulas and fixed examples.
The dew point calculator uses a Magnus-form approximation from room temperature and relative humidity, with Alduchov and Eskridge used as formula-family context. It estimates the air temperature where condensation can begin, but it does not measure the actual temperature of glass, trim, walls, ducts, or hidden materials.
The dew point reading bands are IndoorComfortKit planning prompts, not health, mold, building-safety, or HVAC standards. EPA is used as general moisture-control context, not as the source for the Magnus approximation or the site-defined bands.
For condensation questions, compare the estimated dew point with the coldest likely surface. A room can have a moderate reading in the center while a window edge or exterior corner is cold enough to get wet.
The optional surface comparison uses a separately entered measurement from 0 to 60 °C (32 to 140 °F), a site-defined input range excluding freezing surfaces. It subtracts the room dew point from the surface temperature after rounding both to 0.1 °C; Fahrenheit differences are converted from that Celsius difference. It does not estimate the surface from weather, assume instrument accuracy or define a safe margin. The displayed difference is not a building or moisture diagnosis.
Indoor and outdoor moisture comparison
The indoor / outdoor tool compares two independently calculated dew points after rounding to 0.1 °C. Lower, higher and matching results describe air moisture at similar pressure; they do not set a household ventilation threshold or predict a final room condition.
Vaisala is an instrument manufacturer's application note, used here for terminology. The NWS explanation and Magnus formula reference support separate parts of the method; none certifies this tool or a household sensor. The four comparison checks publish fixed expected outputs.
The room record CSV describes one room at two times. The indoor / outdoor comparison describes two locations, so its outdoor input is kept separate from that record. Use the explicit indoor-transfer button to continue with an indoor reading; replacing an existing room record requires confirmation.
The separate reading log can hold up to 100 explicitly added observations. Its CSV preserves room labels, local clock times, context, example flags and any compared surface temperatures. Imported dew points are recalculated. The graph shows dated, non-example observations for the selected room with no connecting lines; unknown times are not supplied, and local times have no stored time zone. Different sensor positions, instruments or activities can limit comparisons. Neither a pair nor a log proves a cause or equipment effect.
Room AC BTU estimates
The AC calculator selects a capacity from the ENERGY STAR area table, then applies shade or sun, extra occupants, and kitchen adjustments. The 8-foot ceiling assumption is explicit; a different height prompts a caution without a multiplier. Out-of-table areas are rejected.
ENERGY STAR supplies the table and adjustments. DOE purchasing guidance supports appropriate sizing and warns about poor humidity removal from oversizing. Calculator arithmetic is not a product performance guarantee.
AC results are not Manual J load calculations, electrical reviews, installation approvals, lease approvals, or manufacturer recommendations. Product labels, voltage, window support, climate, insulation, and local rules still matter.
Dehumidifier capacity estimates
Dehumidifier sizing uses room area and observed dampness level as the main inputs. ENERGY STAR explains that dehumidifier capacity is commonly measured in pints per 24 hours and depends on both the size of the space and the conditions in that space.
The calculator gives the published US-pint capacity range rather than a single interpolated size. ENERGY STAR also documents the June 2019 change in portable-dehumidifier test temperature from 80°F to 65°F; approximate old/new labels are not an exact model conversion. Product labels, test standards, room temperature, drain setup, fan speed, outdoor climate, and whether doors stay open can change real performance. Active leaks, standing water, wet materials, or drainage problems should be corrected first.
What the calculators do not do
The calculators do not identify material growth, inspect hidden moisture, test air quality, approve electrical work, certify safety, or replace a professional HVAC design. They also do not know local code, lease rules, product-specific instructions, or hidden construction details.
Validation examples
Representative inputs and expected outputs are listed on the Validation Test Cases page. These examples help readers compare the published method notes with the actual calculator behavior.
IndoorComfortKit