Why Ducts Are Used in HVAC

Why Ducts Are Used in HVAC

Why Ducts Are Used in HVAC

Here at I-Sells, as the number 1 supplier of venting and ducting solutions in the UK, we endeavor to bring you the necessity of a properly ventilated home alongside all of the benefits that can be experienced. In this article we will be answering the question ‘Why ducts are used in HVAC’

All of the solutions we offer are in an effort to disrupt the environment neccassary for mould to formulate, as mould can have serious health implications as well as spread easily if left unattanded.

Along side mould control, our venting and ducting solutions also aid in the removal of condensation, retention (and in some cases addition) of heat, and the removal of stale air in your home.

As we continue, let us explain a little bit about home ventilation systems and their benefits.

What is HVAC

HVAC stands for ‘heating, ventilation, & air conditioning’ I-Sells supplies products to facilitate these three factors of HVAC, one of them being home ventilation systems.

Home ventilation systems are the most effective method of curing and preventing condensation dampness. Installed in thousands of dwellings each year, Home ventilation systems can be a more cost-effective and simple to install, whilst still meeting building regulations.

Essentially the concept is to introduce fresh, filtered air into the dwelling at a continuous rate, encouraging movement of air from inside to outside.

To achieve this, the unit is mounted in the loft space, drawing air through the filters and inputting it, at ceiling level, into the property. An integrated heater tempers airflow should the temperature in the loft space drop below a set point, ensuring ultimate comfort in the home.

The result of this airflow is a reduction in condensation and humidity, a key factor in preventing the cultivation of mould.

Here are some benefits of home ventilation system

  • Cures condensation dampness – reduces the humidity in the air, curing condensation dampness preventing mould growth.
  • Improved indoor air quality and healthy living environment- Indoor pollutants from cooking and cleaning, as well as outdoor pollutants including pollen and Radon gas, are eradicated from the home
  • A Unique cost-effective solution
  • Meets Regulations – Meets Part F & L of Building Regulations as a low-energy ventilation strategy
  • Easy & simple installation – Typically installed in under one hour depending on the model you select
  • Modern, sleek circular diffuser – Provides occupant acceptability
  • Low maintenance
  • Energy efficient – System goes into standby during warmer months when there is no evidence of condensation
  • Clinically proven to help allergy and asthma sufferers

Why ducts are used in HVAC

Why Ducts Are Used in HVAC
Why Ducts Are Used in HVAC

ducting is used in order to create an isolated airflow for extracted air to travel through, the airflow is facilitated by the use of an extractor fan or PIV systems.

These systems aid in creating a home with fresh air and help to regulate the temperature in order to prevent the cultivation of mould and dampness.

If HVAC systems had no ducting, the air it intakes & expells would not have anywhere to go or come from respectively, this would render the system useless.

Mould, otherwise known as damp, is a fungus that grows on wet surfaces. Mould comes in a variety of colours: Black, Green, Brown, Grey and White. It can be difficult to identify mould by colour as it can occur in many shades.

Mould reproduces from tiny spores. The spores float through the air and deposit on the surfaces. Under adequate temperature, moisture, and nutrient conditions, the spores can form new mould colonies.

condensation is not the only cause of mould, it can occur from leaks in the structure of a building too.

Mould can severely affect your immune and respiratory system, as the spores are easily breathable and not obvious to see through the human eye.

If you have found mould in your home, you need to assess if this is your landlord’s responsibility (for example it could be from a leaking roof that needs repairing). Or if the damp is caused by improper ventilation. To assess your options, click here.

How can I avoid mould?

Why Ducts Are Used in HVAC
Why Ducts Are Used in HVAC

If you want the best possible prevention from the dangers of mould, ventilation systems along with having a regular ventilating routine is the most secure option you take. Proper ventilation is as simple as:

  • Opening a window and using an extractor fan during or after a hot bath/shower
  • Creating an airflow by opening windows on different sides of the home for around 20 minutes a day
  • Buying or making use of extractor fans within the home
  • Opening a window or using an extractor in the kitchen whilst cooking hot meals
  • (if living in a house) opening windows downstairs and upstairs, allowing the rising hot air to escape through upstairs windows, while cool, fresh air circulates in from the downstairs windows.

Track your humidity levels

Consider buying a Hygrometer. This device measures the levels of humidity in the air, which can indicate to you which rooms are creating the perfect environment for mould. This is a valuable maintenance and detection device that we offer.

Deal with it

If you find mould on your food, dispose of it and any other foods that may have been touching the moulded food, or open within the same area. If you find mould on any surfaces, clean it immediately with our anti-mould surface cleaner.

If mould reappears at a certain spot in your home, check to see if there is any leak or damage to the area that can be letting moisture in. If so, contact your landlord or trusted tradesman to fix the issue.

Browse our mould control options for the best possible solutions to dealing with mould.

Please note that these steps will not completely defend against mould if there are leakage issues in your home, but will certainly help to mitigate the growth of mould if done on a regular basis.

I-Sells Home Ventiliation range

Nuaire Drimaster Eco Hall Control Diffuser Positive Input Ventilation Unit

The Nuaire Drimaster Eco Hall Control Diffuser Positive Input Ventilation Unit has the added benefit of having the system controls located in the contemporary ceiling diffuser. This unique feature bestows the homeowner with complete control of the unit, without having to enter the loft space.

Not only can settings be altered with the push of a button on the contemporary diffuser, but there is also a 7 segment display which notifies the user of the need for filter change and what setting the Drimaster is running on.

The DRIMASTER-ECO range provides whole home ventilation using the Positive Input Ventilation principle, which introduces fresh filtered air into the dwelling at a continuous rate, encouraging movement of air from inside to outside. Click here to view on our site.

Drimaster Eco Heat Positive Input Ventilation Unit With Integral 400W Heater By Nuaire

The Drimaster Eco Heat Positive Input Ventilation Unit incorporates all of the functions of our DRI-ECO-LINK-HC unit but with the benefit of an integral heating element, located between the flexible duct and ceiling diffuser.

This heating component will temper the air which is distributed through the property via the ceiling diffuser, thus ensuring a comfortable living environment. This pioneering design sees the low watt heater (400w) react efficiently and effectively, guaranteeing an economically friendly product.

A temperature sensor on the outside of the unit monitors and controls the heater output to maintain the set point. The set point ranges from 5° to 15° and can be adjusted from the ceiling diffuser. If the temperature at the heater outlet is above the set point, the heater will not activate. To browse more details, click here

Nuaire Drimaster Eco 3S Loft Control 3 Storey Property Positive Input Ventilation Unit

The Nuaire Drimaster Eco 3S Loft Control 3 Storey Property Positive Input Ventilation Unit is the only unit within the DRIMASTER-ECO range which is suitable for install within three storey properties, by using an intumescent alumnium diffuser in order to meet fire regulation standards.

The unit itself works by drawing fresh air in from the loft space and dispersing it through the property via a powder coated ceiling diffuser, which provides a 1 hour fire-block. This technology is fundamental to the well-being of the home owner and allows Nuaire to offer a ventilation solution for every property type. Click here to browse.

We also have the option of having a heated version of this Drimaster, click here to view

Running costs between 5 and 10p per day dependent on electrical supplier and heating and speed setting.

Contact I-Sells

Why Ducts Are Used in HVAC
Why Ducts Are Used in HVAC

We at I-Sells endeavour to make sure our customers have all the information they need before making the choice to invest in our ventilation solutions. Be sure to visit our blog page to gain knowledge on the wide array of factors and issues surrounding ventilation, mould, condensation, and much more.

We hope to have helped you understand the importance of ventilation whilst also answering ‘Why ducts are used in HVAC’’

We understand you may have more questions with regard to mould control, please do not hesitate to contact us for more information with regard to any queries you may have. If you’d like to send us an email, click here. For other contact options, see below:

Call us on 020 8463 9696

Visit us at our showroom:


Monday – Friday: 8:00am to 17:30pm

Saturday: 9:00am to 12:00pm

Sunday: Closed

15 St John’s Parade



DA14 6ES

United Kingdom

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