UK condensation & humidity toolkit
A practical set of free DryHomeLab tools and guides for tenants, homeowners, landlords, housing teams and advisers dealing with condensation, indoor humidity and moisture-related questions.
Use the tools
Start with measurements and the symptom you can see. These tools are free to use and do not require an account. They are decision aids, not a substitute for a building survey or professional diagnosis where a defect or health risk is suspected.
Home condensation risk & humidity checker
Use room temperature, relative humidity and an optional surface temperature to put condensation risk in context.
Open free tool →Indoor dew point calculator
Estimate indoor dew point from temperature and relative humidity, then compare it with cold surfaces.
Open free tool →Dehumidifier running cost calculator
Estimate running cost from wattage, runtime and the current default UK electricity rate, with the tariff editable.
Open free tool →Laundry drying cost calculator
Compare modelled electricity costs across several indoor drying methods using editable assumptions.
Open free tool →Read the diagnosis guides
You are welcome to link to this resource
If your website publishes public guidance on damp, mould, condensation, indoor air quality, energy use or rented housing, you can link directly to this toolkit or to any individual calculator above. Please describe it accurately as an independent informational resource.
Suggested citation: DryHomeLab — UK Condensation & Humidity Toolkit
https://www.dryhomelab.co.uk/resources/condensation-humidity-toolkit
Method and editorial standards
DryHomeLab separates calculations from editorial guidance, shows assumptions where a tool estimates cost or risk, and cites external sources for factual claims in published guides. See the methodology and editorial policy.