020 7760 7660
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What area do you serve?
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!
How do I book the equipment?
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.
Which dehumidifier do I need?
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.
Refrigerant Dehumidifiers vs Desiccant Dehumidifiers
Refrigerant dehumidifiers use a compressor to cool coils. When air passes over these cooled elements, water condenses and then collects in the tank. Generally, the advantages of refrigerant dehumidifiers are - A greater extraction rate at the early stage of flood damage when there is a high volume of water - Easier to set up and move around Desiccant dehumidifiers work differently with air pulled in and passed through a desiccant wheel which absorbs the moisture from the air. The wheel is then heated so that the process can run again. Desiccant dehumidifiers can take longer to set up and be less mobile, and they are more expensive to run. The benefits are: - Strong drying power in cold conditions below 15°C - Quieter operation than refrigerant dehumidifiers For more information on how each type of dehumidifier works take a look at our guide.Which type is right for me?
About 90% of our customers happily use the refrigerant dehumidifiers as they are very versatile and effective in a broad range of situations. Please call us on 020 7760 7660 for more detail and guidance as to what will be suitable for your needs.Are Commercial and Domestic properties covered?
Yes, a wet building is a wet building! Our drying equipment is designed for use in all types of properties; residential or commercial; house, factory, office, shop, hotel, boat, basement or lift shaft! We have worked in them all and have an understanding of a broad range of construction types so can advise on how to best dry out your building and which type of dehumidifier, fan or combination will be most effective.
How We Work
What area do you serve?
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!
How do I book the equipment?
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.
Do you deliver and collect, and what is the cost?
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.
Do you do same day delivery?
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.
Are there any other costs?
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.
Lowest prices? I would like a deal!
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!
How long can I hire the equipment for?
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.
Collection and off-hire notice?
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.
Do you work outside normal hours?
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.
Can I come and collect the equipment?
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.
What happens if something is damaged or missing?
We do charge for breakages or missing items. Please ensure that the equipment is always kept secure and protected from damage or theft.
What are your terms and conditions?
Click here to see or terms and conditions.
Dehumidifier Hire Questions
Which dehumidifier do I need?
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.
Refrigerant Dehumidifiers vs Desiccant Dehumidifiers
Refrigerant dehumidifiers use a compressor to cool coils. When air passes over these cooled elements, water condenses and then collects in the tank. Generally, the advantages of refrigerant dehumidifiers are - A greater extraction rate at the early stage of flood damage when there is a high volume of water - Easier to set up and move around Desiccant dehumidifiers work differently with air pulled in and passed through a desiccant wheel which absorbs the moisture from the air. The wheel is then heated so that the process can run again. Desiccant dehumidifiers can take longer to set up and be less mobile, and they are more expensive to run. The benefits are: - Strong drying power in cold conditions below 15°C - Quieter operation than refrigerant dehumidifiers For more information on how each type of dehumidifier works take a look at our guide.Which type is right for me?
About 90% of our customers happily use the refrigerant dehumidifiers as they are very versatile and effective in a broad range of situations. Please call us on 020 7760 7660 for more detail and guidance as to what will be suitable for your needs.How long will I need the dehumidifier for?
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. Do please send us a photo of your flood/water damage with an explanation and we can come back to you with some advice.
Do I need to empty the dehumidifier tank?
Our equipment is all self-ducting via long hoses that can trail to the nearest sink/drain/outlet so that the dehumidifiers require no emptying. If we can’t find a self-ducting route then you can use one of our tubs, which would need to be checked and emptied throughout the drying period.
How can I speed up the drying process of wet surfaces?
Dry air, heat, air movement and preparation of the wet surfaces all affect the drying process. Please note that 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 and potentially carry the risk of mould growth. We would often recommend that preparation works in the form of stripping back these vapour barriers take place. Once the drying equipment is in situ, doors and windows will need to be closed in order to as far as possible create a closed air environment. Dehumidifiers will strip moisture out of the air, while 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 possible drying time for your wet property.
Are Commercial and Domestic properties covered?
Yes, a wet building is a wet building! Our drying equipment is designed for use in all types of properties; residential or commercial; house, factory, office, shop, hotel, boat, basement or lift shaft! We have worked in them all and have an understanding of a broad range of construction types so can advise on how to best dry out your building and which type of dehumidifier, fan or combination will be most effective.
How Long Should I Leave The Dehumidifier On?
Depending on the size of the room and severity of the issue, the length of time you'll need to leave the dehumidifier on for can vary. Our expert advice will help you achieve the best balance between strong results and a reasonable electricity bill. As the length of time to leave dehumidifier running depends on many variables, there isn't a stock answer. To work out the best running time we take into consideration:
- Size of the room or property
- The temperature of the room
- Type of Dehumidifier
- The dehumidifier size and rate of extraction
- The starting relative humidity
- The target relative humidity
- The cause and severity of the humidity levels
Can I leave the heating on while the dehumidifier is running?
Leaving the heating on during the operation of a Refrigerant Dehumidifier can assist in the extraction of water and improve overall efficiency. It is easier to extract moisture when the air is warmer. Desiccant Dehumidifiers operate better at lower temperatures and are the best choice for colder locations such as garages and cellars. As they contain a heating element within them, running this type of machine returns heat to the room which lessens the need for additional heating to be on. When delivering your equipment we'll provide you with all the advice you need to achieve optimal moisture extraction.
How do I know if I need a dehumidifier?
High humidity can have a huge impact on a living or work environment. The amount of moisture in the air can cause discomfort for those experiencing it and can significantly damage buildings and structures too. You may need a dehumidifier in your home or commercial property if you see the following signs:
- Uncomfortable, Muggy Conditions. If in the summer months your home feels clammy or uncomfortable, it is a strong sign that there is too much moisture in the air.
- Mould spots. Mould and mildew spots usually appear on ceilings or in the corners of bathrooms or other warm environments.
- Musty Odors. Musty smells usually mean mould or mildew as a result of excess moisture.
- Condensation on windows. Vapour on the glass is usually caused by too much moisture in the room, especially when the room is warm.
- Water Stains. Wet stains on ceilings and walls usually suggest escaped water. Using a dehumidifier is advised to clear this up once the cause of the problem is solved.
- Uneven floorboards. Relative humidity that is too high can cause wooden flooring to become uneven due to shrinking when humidity is lower.
- Allergy Sufferers. Poor indoor air quality can lead impact those with allergies and can be tamed with a dehumidifier which can help to eliminate dust mites and remove allergens from the air.
Don't Ignore the signs of excess moisture
Ignoring these tell-tale signs can cause damage to your home or workplace and to it's wooden or material contents. Even worse than this, excess humidity or poor quality air in your home can cause health issues too. If you experience any of these issues and want to find out if you need to run a dehumidifier then get in touch by phone or email. We'll be able to recommend the ideal type of dehumidifier equipment for any areas of your home or commercial property.Where should I position the dehumidifier?
Dehumidifiers work best when there is good air flow around them. Ideally, you should place it in the centre of a room, or at least 6 inches away from the nearest wall, furniture or surface. If it is a particularly large room, place the dehumidifier close to the source of the moisture to concentrate drying efforts on the source of the problem. Fans can be used in conjunction with dehumidifiers to ensure that airflow is strong throughout a larger space.
What does dehumidifier capacity mean?
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 absorption, which can make warming the room that the dehumidifier is being used in beneficial if it is a refrigerant dehumidifier. As our equipment have duct hoses and do not require tanks to be emptied our dehumidifiers should operate at or close to their maximum capacity.
How much does the dehumidifier cost to run?
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.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.Page updated: 26/05/2019
Fans, Heaters & Accessories Questions
Do I need a fan?
Air movement created by fans and air movers increases the rate of evaporation and gives the best chance of ensuring all of the wet area benefits from dry air. While the dehumidifiers themselves push dry air out at pressure, thereby creating a bit of airflow, optimum drying will ensure there’s good airflow around wet areas, taking saturated air back to the dehumidifier to be dried. As a rough guide, at the early stages of flood restoration 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.
What fan do I need?
We have various different shapes and sizes of industrial air movers, which serve many different purposes ranging from: drying floors, drying wall voids, directing dry air up at ceilings, having ducting attached, drying under carpets and injection drying. Please call us to discuss your water damage and we will identify the optimum equipment for drying the building.
Do I need a heater?
In a wet property, heat alone without a dehumidifier would be bad news. Higher temperatures would give greater potential for mould development and deterioration of building materials. However once the dehumidifiers are in situ, the affect of heat is beneficial because it increases the rate of evaporation. As a guide, we indicate that the evaporative rate 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. Dehumidifiers and fans themselves will generate heat, particularly in a compact space, but adding heat, especially in unheated properties, is worth considering.
What type of heater do I need?
We can calculate the heaters required as a function of heat loss from your building multiplied by the temperature uplift required. We would also allow for additional heat needed to evaporate moisture from the wet building materials. The imputs required for this would be: The desired temperature to be maintained within the building; the lowest ambient (outside) temperature typical for the time of year; the direct heat loss from the overall surface area of the structure (we would need your building dimensions and construction detail) and approximate heat loss through natural or mechanical ventilation (we can estimate this). Please contact us with details of your building so that we can calculate the heating equipment needed to boost the drying.
Who operates rented pumps and vacuums?
If you have rivers, pools or puddles of surface water to remove, either you can just rent the equipment from us, or we can undertake the work for you. The same applies for air purification or concrete grinding equipment. Please call us to discuss your needs.
Restoration, Survey & Monitoring Questions
What other services do you provide?
As well as providing the hire of dehumidifiers and other building drying equipment to London and the South of England, we undertake flood restoration work, damp surveys, damp monitoring, and associated building works. Please call us on 020 7760 7660 to see how we can help.
What type of clients do you deal with?
We deal with homeowners and business owners, as well as property management and letting companies. We’ve worked on all types of properties, from residential to office, retail and industrial, as well as vehicles and a boat too!
How do I prepare for drying the building?
Remove any standing water
First, any standing or pooled water must be removed by mopping up manually as well as using vacuums and pumps.Strip back any potential vapour barriers
Where moisture is trapped behind impervious materials such as laminate flooring, tiles, wallpaper and heavy paints, these can act as a vapour barrier to slow down drying and potentially carry the risk of mould growth.Close The Environment
Once the drying equipment is in situ, doors and windows will need to be closed in order to as far as possible create a closed air environment. Dehumidifiers will strip moisture out of the air, while 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.The water damage just happened, what do I do?
Find out how best to deal with water damage efficiently with our guide to the drying process.
Do you do damp surveys?
Yes, on delivery of drying equipment we usually do some basic moisture sampling and offer some advice if requested. Specialist surveys are also undertaken, spending more time on site and using modern, high tech damp surveying equipment to identify the cause of dampness and the extent of damage. Written reports are available with this service also. Please see our surveying services section.
Can I monitor the drying process myself?
Yes, we can leave you instructions and a basic damp meter if requested, to help follow the drying progress. Also we are always available at the end of the telephone to help with any queries.
Will mould grow after water damage?
Moulds reproduce by means of tiny spores which are invisible to the naked eye. These spores are present in the indoor air and can grow only on surfaces that are wet. Growth rate depends on the substrate affected, temperature, organic compounds and contaminants present etc. Mould can grow immediately in certain cases but usually will take around 24-48 hours to start growing, hence it is best to deal quickly with water damage to mitigate any further damage from mould.
General Information Questions
What is a Loss Adjuster?
Loss Adjusters handle claims on behalf of insurance companies. They are not assigned to all claims and whether or not one will be appointed for your case depends on the size of the job. They will investigate the damage, establishing its cause and confirming whether it’s covered by the policy. They will recommend any appropriate payments to the contractors.
Will my insurance company have a preferred supplier?
You do have a choice of supplier for dealing with your water damage incident. Your insurance company may tell you they have a preferred supplier but it is your choice whether you would use them or us. We would be happy to give advice on how to deal with your water damage. Please call us on 020 7760 7660.
What is the cost of water damage restoration?
At the outset of flood damage restoration work it’s very hard to give a detailed idea of the likely cost because there are so many different scenarios and variables. Costs may range from a few hundred pounds to hundreds of thousands, depending on the scale of the job. Full assessment at first arrival on site will give a broad idea of costs, which is tailored as investigation work progresses and the full extent of water spread has been assessed.
Who pays for electricity used by the hire equipment?
If the work undertaken is part of an insurance claim then the electricity cost would be covered by the claim too. We can calculate the cost of electricity used for you, or take a look at our rough guide on how much its costs to run a dehumidifier
Are there health concerns after flood damage?
The degree of caution about adverse health effects from flood damage depends particularly on the type of water contamination and the passage of time from the flood. Flood water can be either ‘white’, ‘grey’ or ‘black’ water. White water is uncontaminated at the time of flood. Grey water is wastewater typically generated from domestic activities such as laundry, showers, dishwashing etc. Blackwater contains human waste. Flood water therefore is often contaminated and, even if it appears ‘clean’ may include elements that can cause a range of illness. Personal hygiene, including washing hands and covering cuts or scratches, is very important. Always wash hands before preparing food, eating, drinking or smoking. Within a few days mould can form, due to the damp environment and this can affect the throat, nasal passages and lungs. Young children, the elderly and those with immune system deficiency should be kept away from properties that have been flooded until they have been passed safe for habitation. Medical advice should be sought immediately if any health concerns are identified.