We can provide drying solutions primarily in London and the South East of England. We travel to counties including Hertfordshire, Essex, Kent, East Sussex, West Sussex, Surrey, Hampshire, Berkshire, Oxfordshire, Buckinghamshire and Bedfordshire. We also go further, to parts of Suffolk, Cambridgeshire, Northamptonshire, Warwickshire, Gloucestershire, Bristol, Wiltshire and Dorset. Call Us for a quote to see if we’re competitive!

Call or email us to book any of our hire equipment. If you're not sure exactly which drying solution will work best for you, we will help you decide which equipment is best suited to your needs. Once instruction is confirmed and delivery completed, we will email an invoice and payment by bank transfer is requested. Please note that we charge for time out not time used.

A question we are commonly asked is ‘do I need a commercial or domestic dehumidifier’.

Sometimes the titles given to dehumidifiers can be confusing, including those on our own website! It can give the impression that commercial / industrial dehumidifiers are only for commercially used spaces, however for most residential this wouldn’t be correct.

Two of the main factors to consider in selecting a dehumidifier are a) the overall room size and b) the type of materials being dried.

Room size:

Roughly speaking, if the room size is larger than a typical single bedroom, hallway or bathroom, then an industrial dehumidifier would be appropriate.  A ‘commercial’ dehumidifier would be needed in order to turn over the air in the space at an appropriate rate.  Our industrial dehumidifiers tend to have an air turnover rate of at least 300 cubic metres of air per hour, which would be needed for most rooms in a residential property.

Commercial spaces such as shops, offices and warehouse spaces are typically larger, with a greater volume of air than residential spaces, so industrial dehumidifiers would be appropriate.

Application:

For general humidity control in residential properties, a domestic dehumidifier may be sufficient.  Even in a larger room such as a double bedroom or living room

Structural drying work after water damage from a flood, burst pipe or penetrating dampness would typically require a commercial dehumidifier with a stronger air turnover rate.

Drying with fans:

In addition to choosing an appropriate dehumidifier, it’s most often the case that additional air movement from an industrial fan, would help to circulate dry air and speed up evaporation. The use of fans together with dehumidifiers will help to distribute the dry air to ensure all affected areas benefit form the equipment.

Refrigerant or Desiccant dehumidifier?

The vast majority or customers happily use the refrigerant dehumidifiers as they are very versatile and effective in a broad range of situations.

There are two main types of dehumidifier technology; refrigerant and desiccant with pros and cons for each machine, with differences in the extraction rates, optimum operating temperatures, running costs, size and noise levels.

Generally the advantages of refrigerant dehumidifers are their greater extraction rate at the early stage of flood damage when there is much water, and they are also easier to set up and move around.  Desiccant dehumidifiers can take longer to setup and be less mobile, and they are more expensive to run, however they have very strong drying power in cold conditions compared with the refrigerant machines.

For more information on rental options and selecting the right equipment for your needs, contact us today.  Please contact us on 020 7760 7660 or help@dehumidifier-rental.co.uk

Yes, dehumidifiers work in all types of properties. Residential buildings as well as offices, shops, warehouses and other commercial spaces can all benefit from dehumidifiers and drying equipment. The size and capacity of the dehumidifier needed will be affected mainly by the overall size of the space.

We’ve done drying work in houses, flats, factories, offices, hotels, boarts, cars, shipping containers and even lift shafts. We have an understanding of a broad range of construction types, so can advise on how to best dry out your building and what dehumidifeirs may be most suitable to hire.

We can provide drying solutions primarily in London and the South East of England. We travel to counties including Hertfordshire, Essex, Kent, East Sussex, West Sussex, Surrey, Hampshire, Berkshire, Oxfordshire, Buckinghamshire and Bedfordshire. We also go further, to parts of Suffolk, Cambridgeshire, Northamptonshire, Warwickshire, Gloucestershire, Bristol, Wiltshire and Dorset. Call Us for a quote to see if we’re competitive!

Call or email us to book any of our hire equipment. If you're not sure exactly which drying solution will work best for you, we will help you decide which equipment is best suited to your needs. Once instruction is confirmed and delivery completed, we will email an invoice and payment by bank transfer is requested. Please note that we charge for time out not time used.

Yes, we offer a full service of delivery and collection of your hired drying equipment. It ensures the equipment gets to you in the best condition and at your convenience. Unlike many other hire companies, we don’t just drop off the equipment at your door. Dehumidifier Rental help in setting up the equipment and provide expert advice on how to get optimal results. Charges for delivery and collection depend on your location and we try to keep this as affordable as possible. Please call or email us to discuss what this would be for your location.

That’s certainly our target but it depends on when you call and give instruction. A bit of notice would be appreciated! It’s most often same day, if not then it would most likely be early the next day at your convenience.

As part of our end-to-end service, we allow a free 30 minutes once on site for setting up the drying equipment and giving advice. Beyond this, we charge for time spent working on site. If further work beyond 30 minutes is required, such as removing carpets, shifting furniture, scraping paint off wet walls etc, we can undertake this for you at our usual rate of £40 +VAT per hour.

Price is important to everyone and we monitor our pricing to ensure that we are very competitive. Although not the cheapest, we are far more affordable than many others. We are told that a lot of value added comes from our keen, helpful staff and the extra effort that goes into understanding your needs, setting up equipment in your property and helping with the best solution. Our equipment is modern and well maintained, giving great reliability and performance. Give us a call!

You can hire the drying equipment for as long or short a period as you like. Our standard charge is for one week, after which costs will be calculated daily, pro-rata for additional days of equipment hire. For long-term hire, invoicing will be at two weekly intervals. You are welcome to hire the drying equipment for less than a week if required. A hire period of 3 – 7 days would cost the same as one week. One and two day hire are also available, with hire charges at 60% and 80% of weekly hire respectively. Please call us to discuss this if you need. Please note that we charge for time out, not time used.

As soon as you call us to request collection, the equipment is off-hire. We will endeavour to get to you as soon as possible at your convenience – if not the same day then most likely the next day.

We do work 24/7 however we charge for working out of normal working hours. Weekday evening hours from 17:00 – 08:00 and any weekend and bank holiday hours are usually charged at 1.5 x call-out and hourly rates. Please call us for a quote.

We have a strong preference for delivering and collecting equipment ourselves as we have had issues in the past with either the equipment being damaged by clients, or damaging their cars. Also the machines are bigger than people usually expect and don’t fit in many cars (as the dehumidifiers have to remain standing during transportation). Most customers appreciate having the drying equipment brought into their property, being setup and and having an explanation of the best way of using the dehumidifiers. One of our strengths is the good value provided in delivery and collection because we set the equipment up for you and offer free advice and basic moisture sampling to help provide a solution.

We do charge for breakages or missing items. Please ensure that the equipment is always kept secure and protected from damage or theft.

Click here to see or terms and conditions.

A question we are commonly asked is ‘do I need a commercial or domestic dehumidifier’.

Sometimes the titles given to dehumidifiers can be confusing, including those on our own website! It can give the impression that commercial / industrial dehumidifiers are only for commercially used spaces, however for most residential this wouldn’t be correct.

Two of the main factors to consider in selecting a dehumidifier are a) the overall room size and b) the type of materials being dried.

Room size:

Roughly speaking, if the room size is larger than a typical single bedroom, hallway or bathroom, then an industrial dehumidifier would be appropriate.  A ‘commercial’ dehumidifier would be needed in order to turn over the air in the space at an appropriate rate.  Our industrial dehumidifiers tend to have an air turnover rate of at least 300 cubic metres of air per hour, which would be needed for most rooms in a residential property.

Commercial spaces such as shops, offices and warehouse spaces are typically larger, with a greater volume of air than residential spaces, so industrial dehumidifiers would be appropriate.

Application:

For general humidity control in residential properties, a domestic dehumidifier may be sufficient.  Even in a larger room such as a double bedroom or living room

Structural drying work after water damage from a flood, burst pipe or penetrating dampness would typically require a commercial dehumidifier with a stronger air turnover rate.

Drying with fans:

In addition to choosing an appropriate dehumidifier, it’s most often the case that additional air movement from an industrial fan, would help to circulate dry air and speed up evaporation. The use of fans together with dehumidifiers will help to distribute the dry air to ensure all affected areas benefit form the equipment.

Refrigerant or Desiccant dehumidifier?

The vast majority or customers happily use the refrigerant dehumidifiers as they are very versatile and effective in a broad range of situations.

There are two main types of dehumidifier technology; refrigerant and desiccant with pros and cons for each machine, with differences in the extraction rates, optimum operating temperatures, running costs, size and noise levels.

Generally the advantages of refrigerant dehumidifers are their greater extraction rate at the early stage of flood damage when there is much water, and they are also easier to set up and move around.  Desiccant dehumidifiers can take longer to setup and be less mobile, and they are more expensive to run, however they have very strong drying power in cold conditions compared with the refrigerant machines.

For more information on rental options and selecting the right equipment for your needs, contact us today.  Please contact us on 020 7760 7660 or help@dehumidifier-rental.co.uk

It sounds obvious but this depends on what is wet and how wet it is. On delivery of drying equipment we can offer some free advice on this. If requested, we can also undertake moisture sampling throughout the drying process to monitor progress.

For rooms with humidity issues, and for general use such as mitigating mould, we would recommend running a dehumidifier on a schedule, eg 6-12 hours per day. Keeping the humidity at 30 – 60% reflects an adequately dry atmosphere and will help reduce the likelihood of mould and other humidity damage.

More intense use is required for drying water damaged building materails after a leak or flood. We would generally find that with equipment running constantly, lightweight materials such as single-sheet plasterboard (eg ceilings and stud walls) can dry in a week or so, however dense materails such as bricks and concrete take considerably longer.

Flood and water damage drying often is best undertaken with preparation work such as removal of floor coverings to expose strctural floor; removal of plaster from solid walls; opening of stud walls where wet insulation may be within. This removal of water damaged materials will quickly remove water from the building, then allow more direct exposure of structrual materials to dry air from the dehumidifiers.

Do please send us a photo of your flood/water damage with an explanation and we can come back to you with some advice.

Most of our dehumidifiers pump away water automatically and don’t need emptying.  Our equipment tends to pump out and be self-draining via long hoses that can trail to the nearest sink/drain/outlet.   If we can’t find a self-draining route then you can use one of our tubs, which would need to be checked and emptied daily throughtout the drying period.

How dehumidifiers work is by colling air to condense water vapour from the air.  This water vapour is collected in a tank which either needs emptying or pumps water away to a drain.

For dehumidifiers that need emptying, many of them have an automatic shut-off in the event of the tank filling.  Daily emptying would tend to be required.

Dry air, heat, air movement and preparation of the wet materials all affect the drying process. Dehumidifiers work by removing moisutre from the air in a room, which then allows moisture in building materails to evaporate quicker. Air movement from industrial fans helps target the dry air and speed up evaporation from surfaces. To further help with evaporation, warmth helps, so the addition of heaters particularly at colder times of year may be beneficial. Preparation of surfaces before drying is often useful in speeding up building drying. Where moisture is trapped behind impervious materials such as laniate flooring, tiles, wallpaper and heavy paints, these can act as a vapour barrier to slow down drying by preventing the evaporation of moisture. We often recommend that preparation works in the form of stripping back these vapour barriers take place before accellerated drying is undertaken.

Once the drying equipment is in situ, doors and windows will need to be closed in order to create a closed air environment. Dehumidifiers recycle the same air repeatedly, which will strip moisture out of the air. Fans are used to circulate dry air and displace saturated air back towards the dehumidifiers. Heaters can be used to further increase the evaporation rate as warmer air can hold more moisture.

As a rough guide, at the early stages of flood restoration drying, increasing air velocity from 0.5 metres per second to 3.5 metres per second would double the evaporation rate, with a further doubling of the evaporation rate by increasing air movement to 7.0 metres per second.

The affect of heat on the evaporative process is that the rate of evaporation approximately doubles with an increase in air temperature from 20 to 30 degrees celsius, with a further doubling of the evaporation rate with an increase to 40 degrees celsius.

Call us to discuss the suitable building drying equipment for your property, and advice as to the possible drying time for your wet property.

Yes, dehumidifiers work in all types of properties. Residential buildings as well as offices, shops, warehouses and other commercial spaces can all benefit from dehumidifiers and drying equipment. The size and capacity of the dehumidifier needed will be affected mainly by the overall size of the space.

We’ve done drying work in houses, flats, factories, offices, hotels, boarts, cars, shipping containers and even lift shafts. We have an understanding of a broad range of construction types, so can advise on how to best dry out your building and what dehumidifeirs may be most suitable to hire.

See above our answer for ‘how long do I need a dehumidifier for?’. For structural drying after leaks and water damage, the drying equipment should be run constantly. Drying times for wet building materils can range from days to many weeks.

For rooms with humidity issues, and for general use such as mitigating mould, we would recommend running a dehumidifier on a schedule, eg 6-12 hours per day. Keeping the humidity at 30 – 60% reflects an adequately dry atmosphere and will help reduce the likelihood of mould and other humidity damage.

The length of time to leave a dehumidifier running depends on many variables. To work out the best running time we take into consideration the following:

1. Size of the room or property;
2. Temperature of the room;
3. Dehumidifier type, size and rate of extraction;
4. Relative humidity;
5. Target humidity;
6. Cause and severity of moisture levels

When delivering and setting up your chosen equipment we’ll provide advice on how long to run your dehumididifer to achieve the best results.

Dry air, heat and air movement all affect the drying process.

Dehumidifiers work by removing moisture from the air in a room, which then allows moisture in building materails to evaporate quicker. Air movement from industrial fans helps target the dry air and speed up evaporation from surfaces. To further help with evaporation, warmth helps, so the addition of heaters particularly at colder times of year is often beneficial.

The affect of heat on the evaporative process is the rate of evaporation approximately doubles with an increase in air temperature from 20 to 30 degrees celsius, with a further doubling of the evaporation rate with an increase to 40 degrees celsius.

Feel free to contact us on 020 7760 7660 if you need further advice.

High humidity in your home can lead to a variety of issues – some obvious and others more subtle. Whilst there is always some moisture in air, excessive humidity can harm your property and affect your health. A dehumidifier can be a simple, effective solution, but how do you know when it's time to get one?

Here are some of the most common signs your home may need a dehumidifier, and why acting early can save you trouble and cost down the line.

a) Persistent Condensation on Windows
If you regularly notice beads of water forming on your windows, especially in the morning, it’s a typical sign of excess humidity. While this might seem harmless, condensation can lead to deterioration around window frames and encourage mould growth.

b) Musty or Damp Smells
A musty odour in basements, bathrooms, or unused rooms is often a warning signal. This smell is usually caused by mould or mildew, both of which thrive in humid environments. A dehumidifier helps remove excess moisture, making it harder for these fungi to flourish.

c. Mould Spots on Walls or Ceilings
Dark, discoloured patches, especially around corners, behind furniture, or on ceilings, may be mould. Often these would be found where building materials are cooler or where air is stagnant. These patches not only damage your home but can also aggravate respiratory conditions like asthma or allergies. If you’re cleaning mould only for it to come back, a dehumidifier might be a useful solution to help mitigate mould formation.

d. Peeling Wallpaper or Bubbling Paint
Moisture behind your walls can cause paint to bubble and wallpaper to peel or curl. These cosmetic issues could point to more serious hidden dampness. Dehumidifiers help stabilise indoor moisture levels, protecting the decorative finishes of your home.

e) A Feeling of Dampness or Clamminess in the Air
Does your home feel stuffy or heavy, even when it's not hot? Excess humidity can make the air feel clammy, which can be particularly uncomfortable during warmer months. A dehumidifier improves indoor air quality and comfort.

The feeling of clamminess may typically be felt when relative humidity approaches 70% or more. Typically an internal humidity level should be in a range of 40 – 60%.

f) Increased Allergy Symptoms
Dust mites, mould spores, and mildew, all common allergens, thrive in moist environments. If you or your family members are experiencing more frequent allergic reactions at home, high humidity could be a factor. Reducing humidity of air helps minimise allergen levels.

g) Visible Water Stains or Damp Patches
Stains on ceilings, walls, or floors could indicate historic or ongoing moisture problems. While leaks may need to be addressed directly, a dehumidifier can help manage residual moisture levels to prevent further damage of materials.

h) Warped Wooden Flooring or Furniture
Wood absorbs moisture from the air. If your floors are beginning to buckle or wooden furniture seems to be swelling or cracking, it could be due to high humidity. A dehumidifier helps maintain a balanced indoor environment, preserving your home’s fixtures.

When to Consider Renting a Dehumidifier

For temporary issues like after a leak, flood, or during a damp time of year, hiring a dehumidifier of a strong capacity is often a more cost-effective solution than buying one outright. At Dehumidifier Rental we offer a range of high-performance dehumidifiers for domestic and commercial needs, delivered straight to your door and setup for you.

If you're noticing one or more of the above signs, it might be time to deploy a dehumidifier, either short or long-term. Keeping your property’s humidity under control can help protect your health, preserve belongings, and maintain a comfortable living environment.

For more information on what dehumidifier is needed to dry your property, or how to fix water damage, do contact us for free advice. We always welcome a photo of damp areas, so we can recommend suitable equipment!

To position a dehumidifier effectively, it should be placed in the centre of a room for optimum airflow and to prevent restricted airflow by walls or furniture.

Consider placing it near the source of moisture, such as kitchen or bathrooms. When the dehumidifier is being used, windows and doors should be kept closed to prevent loss of dry air, also to recycle the same air to make it drier and drier.

More detailed information would include:

For more information on what dehumidifier and drying equipment hire is needed to dry your property, or how to fix water damage, do contact us for free advice. We always welcome a photo of damp areas, so we can recommend suitable equipment!

The capacity of a dehumidifier refers to the maximum amount of moisture that can remove from the air within 24 hours. This capacity is based on optimum operating conditions. For example, our Compact Domestic Dehumidifier has a capacity of 19 Litres per day. This is based on a Relative Humidity of 90% at 32.2 degrees Celsius. A typical performance in conditions of 60% Relative Humidity at 26.7 degrees Celsius is 9 Litres per day.

A damper room with a warmer temperature will result in faster water extraction. In a cooler space, or when a dehumidifier has been running for some time (and therefore removed the initial humidity) the water extraction rate will decrease.

The cost of electricity consumption for 24 hr constant operation varies from around £2.50 per day for our standard industrial machine to around £6.40 per day for our larger portable machine. The table below shows a breakdown of the average power consumption, running cost for 24 hours and daily capacity of our most popular products.

Dehumidifier Running Costs

Dehumidifier Type	Power Consumption Per Hour	Avg Running Cost 24 Hours	Capacity Per Day
Large Industrial Dehumidifier	0.69 kW Per Hour	£5.80	55 Litres
Compact Industrial Dehumidifier	0.76 kW Per Hour	£6.38	48 Litres
Compact Domestic Dehumidifier	0.36 kW Per Hour	£3.02	19 Litres
Small Adsorption Dehumidifier	0.88 kW Per Hour	£7.35	12 Litres
Medium Adsorption Dehumidifier	1.22 kW Per Hour	£10.21	22 Litres
Large Adsorption Dehumidifier	1.78 kW Per Hour	£14.95	38 Litres
Large Low Grain Dehumidifier	0.69 kW Per Hour	£5.80	63 Litres
Extra Large Low Grain Dehumidifier	0.92 kW Per Hour	£7.73	91 Litres
Large Condensing Dehumidifier	0.42 kW Per Hour	£3.53	30 Litres
Extra Large Condensing Dehumidifier	1.7 kW Per Hour	£14.28	45 Litres

 

Do dehumidifiers use a lot of electricity?

The benefits of using an efficient dehumidifier to draw moisture the air room mean that they are usually the most economical solution. The amount of time you'll need to leave your dehumidifier running depends on the size of the room and the type of dehumidifier used as well as the starting humidity levels of the room. To ensure that you select the product which offers the most suitable capacity of collecting water at the most economical energy consumption please get in touch with our knowledgeable team for advice. We also offer Domestic Dehumidifier Hire and Commercial Dehumidifier Hire services.

Can I leave my dehumidifier on all day?

Initially, you are likely to need to run your dehumidifier continuously due to the high level of humidity until the RH is around 50 to 55%. Our products are designed to be used for long periods of time to ensure the safe drying of your property. If you're unsure of how long to run your dehumidifier we can offer expert advice as well as a moisture sampling to monitor progress. Please see the dehumidifier rental page or call us for further information and advice.

Page updated: 27/11/2024