Dehumidifier Hire London

What does a dehumidifier cost to run?

A compact domestic unit typically draws 200–400W — roughly 50p to £1 per day in electricity at current UK rates. Industrial units draw 500–800W but cycle their compressors automatically, so they are not running at full power the entire time. For most hire jobs, the electricity cost is minor compared to the damage that continued moisture causes.

Three machines, one drying system

For most domestic damp, a dehumidifier alone is enough. For active drying after a leak, flood or build, three machines work together: the dehumidifier removes moisture from the air, an air mover pushes airflow across wet surfaces to speed evaporation, and a heater raises the temperature so the dehumidifier can work at full efficiency.

How much does it cost to hire a dehumidifier in London?

Domestic dehumidifier hire starts from £6.30 per day + VAT for a 20L compact unit. Industrial units start from £11.20 per day + VAT. Weekly rates are available on all units. Delivery is charged separately based on your postcode zone. For multi-unit or longer hires, call for a tailored quote.

How long do I need a dehumidifier for?

It depends on the moisture level, room size and ventilation. Light condensation may improve within 3–5 days. Flood restoration or whole-property drying typically takes 1–3 weeks. Post-plaster construction drying can take longer depending on the building and season. Tell us the room and what caused the moisture — we can advise a realistic hire period before you book.

Can I use a dehumidifier to dry plaster?

Yes, but not immediately after applying it. Let the plaster set naturally for the first 24–48 hours to avoid surface cracking. After that initial cure, a dehumidifier can significantly speed up the remaining drying time. For large areas or new builds, pair with air movers and consider an LGR unit — it keeps extracting as humidity drops, which standard units struggle with once the plaster starts drying out.

Do I need a heater with a dehumidifier?

Sometimes. Refrigerant dehumidifiers work best above 15°C. In colder months, empty properties, or unheated buildings, pairing with a heater raises the temperature enough for the dehumidifier to extract moisture properly. In winter, adding heat is often the single biggest thing you can do to speed up drying.

Can I run a dehumidifier 24/7?

Yes, and for flood recovery or construction drying you should. Make sure there is safe airflow around the unit. If continuous drainage is available (hose to a sink or drain), use it — the machine runs unattended without stopping when the tank fills. Most industrial units come with pump-out drainage as standard.

Which dehumidifier is best for construction drying?

For building sites and post-plaster work, the 63L LGR or 95L industrial dryer are the most effective choices. LGR technology keeps extracting as humidity drops below 50% RH, which matters when you need to meet building moisture standards before finishing trades can start.

What does LGR mean on a dehumidifier?

LGR stands for Low-Grain Refrigerant. Standard dehumidifiers slow down as the air dries out. An LGR unit uses a dual coil system to pre-cool the incoming air, letting it keep extracting moisture even at lower humidity levels. This is critical on construction sites and in flood restoration where you need to get humidity below 50% and hold it there until the structure is properly dry.

How much electricity does a hire dehumidifier use?

A compact domestic unit typically draws 200–400W, costing roughly 50p to £1 per day in electricity at current UK rates. Industrial units draw 500–800W but cycle their compressors automatically once the target humidity is reached, so they are not running at full power continuously. For most jobs, the electricity cost is minor compared to the cost of leaving moisture untreated.

Will my insurance cover dehumidifier hire after a flood?

In most cases, yes. Home and buildings insurance policies typically cover dehumidifier hire as part of water damage restoration. Keep your hire invoice, take photos of the damage before and during drying, and check with your insurer before starting. We provide a clear, itemised invoice that insurers accept without issue.

What is the difference between a dehumidifier and an air mover?

A dehumidifier removes moisture from the air. An air mover pushes high-velocity air across wet surfaces — carpets, floors, skirting — to speed up evaporation. They work together: the air mover releases moisture from surfaces into the air, and the dehumidifier extracts it. For anything beyond simple condensation, using both together gives significantly faster results.

Do you deliver, or can I collect?

We deliver across London from our Greenford / UB6 operating area. Next-day and same-day slots are available subject to schedule. See delivery zones and pricing.