

DD3 Slimline
A slimline desiccant dehumidifier removing up to 10 litres a day across spaces up to 85m², quiet at 36 dBA.
● In stock
Free delivery · 3–4 working days
Free to most UK postal areas; ordered by 10am ships same day. 30kg+ items are kerb-side pallet delivery. May not reach NI, Channel Islands, Scilly Isles or Isle of Man.
14-day returns
Change your mind within 14 days. Sold & shipped via EcoAir.
Manufacturer warranty included
Covered against manufacturing defects. Real UK aftercare.
The EcoAir DD3 Slimline is a high-capacity desiccant dehumidifier UK buyers choose when one unit needs to dry a whole flat or open-plan home. With up to 10 litres of daily extraction across spaces up to 85m², it comfortably handles 2-3 bedroom properties, hallways and unheated areas all from a single slim footprint. Being desiccant, it stays effective in cold rooms, garages and conservatories where compressor dehumidifiers lose performance, and it returns slightly warmed air that takes the chill off in winter. At 6.8kg it remains easy to carry between floors, and noise starts from a low 36 dBA. Running costs for a desiccant unit of this output sit in the low pennies-per-hour at around 26p/kWh, especially as its automatic humidity detection eases power once your target is met. A washable antibacterial Nano Silver filter keeps the circulated air clean, while a dedicated laundry mode speeds indoor clothes drying, a genuine money-saver against a tumble dryer. With its electronic panel, slimline build and 85m² reach, the DD3 Slimline is a practical, whole-home weapon against condensation, damp and black mould.
Highlights
- Up to 10 litres/day extraction
- Slimline design covers up to 85m²
- Lightweight 6.8kg body
- Quiet from 36 dBA
- Washable antibacterial filter
- Laundry mode for faster drying
Description
The EcoAir DD3 Slimline is a desiccant dehumidifier engineered for homes and unheated spaces up to 85m², extracting up to 10 litres of moisture per day. At just 6.8kg it's easy to carry, and it runs quietly from 36 dBA.
Energy-saving technology, automatic humidity detection and a washable antibacterial filter help keep the air clean and running costs down. A dedicated laundry function speeds up indoor drying for added everyday convenience.
Specifications
- Dehumidifier type
- Desiccant
- Dehumidification
- Up to 10 litres/day
- Coverage area
- Up to 85m²
- Noise level
- From 36 dBA
- Filter
- Nano Silver
- Controls
- Electronic panel
- Net weight
- 6.8kg
Ideal for
DD3 Slimline — FAQs
What size dehumidifier do I need for my house?
The DD3 Slimline extracts up to 10 litres a day and covers spaces up to 85m², making it well suited to 2-3 bedroom homes and open-plan areas. For a single damp room a smaller unit like the EcoAir Piccola or DD1 Mini would suffice.
Desiccant vs compressor dehumidifier - which is better here?
The DD3 Slimline is a desiccant model, which makes it the better choice for cold or unheated spaces such as garages, conservatories and hallways, where it keeps extracting moisture and returns slightly warmed air. Compressor units are better only in warm, humid summer conditions.
Is the DD3 Slimline quiet enough to leave on all night?
Yes. It runs from 36 dBA, a soft, low hum, so it's comfortable to leave on overnight, and automatic humidity detection means it won't run flat out once your target is reached.
Can it help dry laundry indoors?
Yes. It has a dedicated laundry mode that concentrates extraction to dry clothes faster indoors, which can be cheaper and gentler than a tumble dryer.
How much does the DD3 Slimline cost to run per hour?
As a 10L/day desiccant unit it runs at low pennies per hour at the typical UK rate of around 26p/kWh, with energy-saving auto detection reducing consumption once humidity is under control.
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