Measure first, buy second

Dehumidifier guides and calculators.

Understand the room, compare the two main technologies and calculate the cost of the job you need to finish. Every tool is free, gives the result before any next step and does not require an email.

A better order

Measure the pattern → rule out building defects → define the job → choose the technology → compare capacity and total running cost.

Free tools

Use your room and your tariff.

01
September 2026 cost index

Compare published model running costs

Explore ten source-linked model and operating-mode inputs against the current Ofgem rate or your own tariff, then download the data.

02
Private measurement tool

Measure humidity for seven days

Keep a private room-by-room temperature and humidity record in your browser, then download it as CSV.

03
Technology selector

Choose compressor or desiccant

Screen the two technologies by room temperature and task, then compare the running cost of actual candidates.

04
Electricity calculator

Calculate dehumidifier running cost

Use the wattage, active-load estimate, schedule and electricity rate from your own bill.

05
Capacity helper

Find a sensible capacity band

Combine room volume, temperature, humidity and moisture load instead of relying on floor area alone.

06
Exact-model evidence hub

Read every Meaco Arete Two model profile

Inspect the 10L, 12L, 20L and 25L as individual buying decisions, with normal-condition extraction, cost examples, dimensions and limits.

07
Four-model selector

Compare every Meaco Arete Two size

Put the 10L, 12L, 20L and 25L on the same extraction, power, noise and airflow evidence before opening a retailer.

08
Laundry cost comparison

Compare laundry drying costs

Compare a dehumidifier, heated airer and tumble dryer for the same finished load using your own figures.

Step 1

Measure the room and identify the job

Start with a repeatable reading and the moisture source before choosing an appliance.

01
Practical measurement · 15 min read

How to measure humidity at home: a room-by-room method

How to measure and test humidity in a room with a hygrometer, including where to put it, when to take readings and a seven-day logging method.

02
Humidity basics · 16 min read

What should humidity be in a UK home? Room-by-room guide

A practical UK guide to normal home humidity, the 30–50% reference range, persistent readings above 60% and room-by-room checks.

03
Buying foundations · 16 min read

Dehumidifier specifications explained: capacity, watts, airflow and noise

Read litres per day, watts, airflow, noise, tank size and operating range correctly before comparing dehumidifiers.

04
Sizing guide · 18 min read

What size dehumidifier do I need? 10L, 12L, 20L and 25L explained

Compare 10L, 12L, 20L and 25L dehumidifier classes using room volume, temperature, moisture load, airflow and condition-specific extraction.

Step 2

Compare technology and running cost

Use equivalent test evidence and total energy for the same result—not one headline wattage figure.

01
Buying foundations · 16 min read

Desiccant vs compressor dehumidifier: which type suits your room?

Compare desiccant and compressor dehumidifiers by room temperature, electricity use, laundry performance, noise and current model evidence.

02
Cost and efficiency · 15 min read

Dehumidifier running cost: calculate hourly, daily and monthly cost

Calculate dehumidifier cost per hour, day, month or laundry load from watts, run time, active load and your own electricity tariff.

03
Laundry economics · 16 min read

Dehumidifier vs tumble dryer: which is cheaper per dry load?

Compare dehumidifier and tumble-dryer running cost using completed-load kWh, a break-even table and your own electricity tariff.

04
Model comparison · 14 min read

EcoAir DD1 vs Meaco DD8L Zambezi: which should you buy?

Compare the EcoAir DD1 Classic MK6 and Meaco DD8L Zambezi by cold-room extraction, power, noise, tank, controls and drainage.

Step 3

Choose for a real room or task

Narrow the shortlist by temperature, noise, airflow, capacity and how the appliance will actually be used.

01
Model comparison · 15 min read

Meaco Arete Two 10L vs 20L: which should you buy?

Choose between the MeacoDry Arete Two 10L and 20L using matching extraction, power, airflow, noise, tank and workload evidence.

02
Model comparison · 13 min read

Meaco Arete Two 12L vs 20L: which size should you buy?

Compare the MeacoDry Arete Two 12L and 20L at matching room conditions, including extraction, power, airflow, noise, tank size, dimensions and likely workload.

03
Laundry buying guide · 18 min read

Best dehumidifier for drying clothes UK: 3 models compared

Compare three UK laundry dehumidifiers by airflow, power, noise, room temperature and tank size, with clear picks for regular, light and cold-room loads.

04
Cold-space buying guide · 16 min read

Best garage dehumidifier UK: choose for cold temperatures first

Compare UK garage dehumidifiers by cold-weather performance, compressor or desiccant technology, drainage, electricity use and safe placement.

05
Bedroom buying guide · 15 min read

Best bedroom dehumidifier UK: 3 low-noise candidates compared

Compare three bedroom dehumidifiers by published low-speed noise, night controls, power, capacity and cool-room performance.

Step 4

Dry laundry without guessing

Compare a complete dry load, record the setup and keep moisture from simply moving elsewhere in the home.

01
Laundry method · 17 min read

How long does a dehumidifier take to dry clothes? A timing method

Use a 2, 4 and 8-hour checkpoint method to measure dehumidifier laundry drying time without relying on an unsupported universal promise.

02
Laundry and moisture · 15 min read

How to use a dehumidifier to dry clothes: setup and timing

A step-by-step dehumidifier laundry setup covering rack placement, room airflow, safe appliance positioning, drying time and measured electricity cost.

Evidence status

Specification-led comparisons are labelled as such. Better Home Climate will not call a product tested until it has completed the published hands-on protocol.