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minerals within water for it to pass the current, these systems can only work on mains water and so will become filled with scale over time, increasing their ongoing spare parts costs if in a hard water area.


Resistive, on the other hand, use a heating element to physically boil the water into steam. With this technology, you can work on a much wider range of water qualities, but it does have a higher initial cost for the customer. Due to this, knowing the quality of your water is critical to selecting the best solution. Evaporative (adiabatic) humidifiers come with the benefit of having the moisture fully absorbed straight after the air levels the humidifier itself, and so doesn’t come with these consideration requirements. Being a cold-water solution, adiabatic humidifiers have extremely low energy consumption and, with the free cooling they can offer, can be an excellent solution for customers looking to achieve their Net Zero targets.


Dehumidifier power plays


Cooling coils handle summer excess naturally, but for year-round precision, refrigerant units fit new AHUs while desiccant ones retrofit flawlessly, thriving in cold air where others falter. They nail tight control, ideal for AHU flows. Within AHUs, the most common method of


Above: This humidifier setup in a university AHU shows how compact tech fits seamlessly and professionally, delivering humidification in tight plantrooms and where short absorption distances are required


reducing humidity levels is via the cooling coil, which naturally dehumidifies through the condensation it forms. However, if a space or process is critical or has a specialist relative humidity requirement (such as less than 40%RH, where cooling coils start to use a high amount of energy), this is where additional dehumidification considerations are made. Either


AIR HANDLING UNITS


“Optimal humidity – often 40- 60% – slashes virus spread in offices and hospitals, protects museum artifacts from cracking, and keeps labs stable. Humidity control systems are often overlooked and are required to be retrofitted at a later date, but with the wide range of technologies available, there is always a solution to be found.”


refrigerant, for warmer applications, or desiccant technology, which excel is colder or very low RH conditions.


Humidity Solutions brings decades of AHU


expertise to specifiers, manufacturers, and end-users - delivering precise selections, competitive quotes, stocked spares for fast delivery, UK-wide installs, and dedicated after-sales support from our Leatherhead team. Whether specifying new humidifiers, sourcing a reliable supply, or refurbishing systems, contact us at info@humiditysolutions.co.uk or 01372 571 200 for optimal solutions tailored to your challenges.


HUMIDIFYING AIR HANDLING UNITS? THEY’RE OUR SPECIALITY.


Why choose Humidity Solutions?


+ + + + + + +


Free site visits and quick quotes Wide range of humidity control systems in stock Low energy solutions Free technical support on our products over the phone Full UK coverage for service and maintenance Close control of +/-1% relative humidity possible Award-winning experts with decades of experience


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Contact us today


T: +44 (0)1372 571 200 E: info@humiditysolutions.co.uk


May 2026 15


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