Why homeowners need fresh air ventilation systems for improved IAQ?

Helios fresh air ventilation system for improved indoor air quality
Helios fresh air ventilation system for improved indoor air quality

Indoor Air Quality (IAQ) is a critical aspect of maintaining a healthy and comfortable living environment for homeowners. The air we breathe inside our homes can have a significant impact on our health and well-being. Poor IAQ can lead to various health issues, including respiratory problems, allergies, and other adverse effects. Homeowners, increasingly aware of IAQ’s significance, actively pursue effective solutions to improve air quality in their living spaces. Fresh air ventilation systems are designed to bring in outside air while expelling stale indoor air. These systems play a crucial role in improving indoor air quality by diluting and removing indoor air pollutants. They help in ensuring a continuous supply of fresh air and maintaining proper ventilation within the home. Moreover, energy recovery fresh air ventilation systems are an effective solution to combat indoor air pollution and create a healthier living environment for occupants.

In this article, we will explore the benefits and reasons why homeowners should consider installing fresh air ventilation systems in their homes. Furthermore, we will delve into features of Helios energy recovery fresh air ventilation systems and their relevance in today’s scenario.



Understanding Indoor Air Quality (IAQ)

Indoor Air Quality (IAQ) refers to the air quality inside buildings and structures, especially in residential properties. The quality of indoor air can directly impact their health and well-being. Hence, is vital for homeowners because people spend a significant amount of time indoors. Common indoor air pollutants include volatile organic compounds (VOCs) emitted from paints, cleaning products, and furniture. Additionally, allergens like pet dander and pollen, as well as mold spores that can grow in damp environments, contribute to indoor air pollution.

Potential health effects of poor IAQ on occupants may include respiratory issues such as asthma and allergies, headaches, fatigue, and irritation of the eyes, nose, or throat. Long-term exposure to poor IAQ can lead to more severe health problems, making it crucial for homeowners to prioritize and improve indoor air quality.


The importance of fresh air ventilation systems

Fresh air ventilation systems play a vital role in maintaining healthy indoor air quality. They effectively remove stale air, odours, and pollutants while ensuring a constant supply of fresh air.

The benefits of proper ventilation are numerous. It improves respiratory health by reducing the concentration of airborne contaminants like allergens, dust, and pollutants. Additionally, it helps control moisture levels, mitigating the risk of mould and mildew growth, which can trigger allergies and respiratory issues.

Moreover, adequate ventilation decreases indoor pollutant concentrations, creating a healthier and more comfortable living or working environment. It is important to balance energy efficiency with ventilation to ensure optimal outcomes.

While energy efficiency is crucial, insufficient ventilation can lead to poor indoor air quality and potential health problems. Therefore, integrating energy-efficient ventilation systems that provide fresh air while minimizing energy loss is key to maintaining a healthy and sustainable indoor environment.


Introducing the Helios fresh air ventilation system

The Helios ventilation system is a cutting-edge solution designed to provide superior indoor air quality and comfort. With innovative features and advanced technology, it offers a range of benefits for residential and commercial spaces.


How does the Helios KWL ventilation system work?


Helios KWL ventilation system
Helios KWL ventilation system maintains a comfortable indoor environment


The Helios KWL ventilation system utilizes heat recovery ventilation (HRV) to maintain a comfortable indoor environment. Stale air is extracted while fresh air is brought in from outside. A highly efficient heat exchanger recovers heat from the outgoing air and transfers it to the incoming air. This ensures energy efficiency and a pleasant indoor temperature. Specially designed valves remove air containing humidity, toxins, and odours from kitchens, bathrooms, and toilets, directing it to a heat exchanger in the ventilation unit. The extracted air’s heat energy is efficiently transferred to the outside air, with up to 90% efficiency.

Optimize the system further by incorporating a ground heat exchanger and distribute the purified air to living spaces, ensuring a healthy and comfortable climate. Exhaust air is released outside through a roof or wall outlet.



Also see: Helios KWL balanced ventilation system (from Blutherm)


Interesting features of the Helios fresh air ventilation system


Alexa controlled air ventilation
Helios ventilation system can be easily controlled using voice commands


  1. Dust & pollen-free air: The energy recovery ventilation system incorporates advanced filters. These filters effectively remove dust and pollen particles from the incoming air, ensuring cleaner and healthier indoor air quality.
  2. Passive cooling: By exchanging heat between the incoming and outgoing air, the Helios system provides passive cooling during warmer months. This reduces the need for excessive air conditioning and lowers cooling costs.
  3. Mind-body wellness: Improved IAQ has a positive impact on occupants’ mental and physical well-being, creating a more comfortable and pleasant living environment.
  4. Prevent sick building syndrome: The Helios system has efficient ventilation capabilities. It helps minimize the accumulation of indoor pollutants, preventing the onset of sick-building syndrome and related health issues.
  5. Reduce cooling costs:  By utilizing heat recovery and passive cooling, the Helios ventilation system helps to reduce cooling costs. This reduction leads to energy savings and increased efficiency.
  6. Best indoor air quality: The KWL energy recovery ventilation system ensures the highest standards of indoor air quality. It achieves this by continuously supplying fresh and filtered air, free from contaminants and pollutants.
  7. Easily control with “Alexa”:  The Helios KWL units can be conveniently controlled using voice commands through devices like “Alexa.” This feature enables seamless and user-friendly operation.


Helios easyControls – The functions at a glance

With the integration of an integrated web server and LAN connection, Helios easyControls transforms the user-friendliness of KWL® units. This feature allows for seamless integration into a PC network, enabling easy control through a web browser interface. Whether using a PC, laptop, tablet, or smartphone, users have the flexibility to control the units at any time and from any room.

  1. Access from anywhere: Helios easyControls provides location-independent access to the KWL® ventilation unit. Whether you’re at home or on the go, as long as you have an active internet connection, authorized users, service technicians, or housing associations can conveniently change settings or request status information via the easyControls web portal.
  2. Integration with building control systems: The KWL® units can be easily integrated into a building control system network using the standard Modbus interface (TCP/IP) or an optional KNX module.
  3. Easy configuration and quick commissioning: The user-friendly interface extends its benefits to system configuration and initial commissioning, making it easy and efficient.
  4. No PC network required: Even without a PC network, simply connect the KWL® unit to a laptop using a LAN cable and access the easyControls menu in the browser.
  5. Automatic firmware updates: With Helios easyControls, the ventilation unit stays up to date with the latest firmware through quick and easy updates via the internet.
  6. Demand-controlled and energy-saving operation: Utilizing easyControls, demand-controlled humidity sensors, and optionally connected CO2, mixed gas (VOC), or humidity room sensors, the KWL® unit automatically ensures an optimal indoor environment while efficiently removing air contamination caused by activities like cooking or showering. This results in energy savings.
  7. Manual operation: If a PC network is not available or manual access is preferred, easyControls can be controlled using a comfort control element with a graphic display or a step switch.


Energy-efficient and sustainable design of the Helios fresh air ventilation system


KWL ventilation system
Sustainable KWL air ventilation system


The Helios ventilation system incorporates energy-efficient and sustainable design principles. With features like heat recovery, the system maximizes energy conservation by transferring heat from outgoing air to incoming fresh air. This reduces energy consumption and lowers heating and cooling costs. Additionally, the system’s demand-controlled operation ensures optimal ventilation based on environmental conditions, minimizing energy waste. By promoting energy efficiency and sustainable practices, the Helios ventilation system contributes to a greener and more sustainable indoor environment.


Types of Helios ventilation systems

There are two primary types of fresh air ventilation systems commonly used in homes: decentralized domestic ventilation with heat recovery and centralized domestic ventilation with heat recovery.


Decentralized domestic ventilation with heat recovery

In the realm of renovation, a decentralized ventilation system with heat recovery presents notable advantages. It stands as an economical and simple solution specifically tailored for single rooms. Two crucial points take centre stage: ensuring high efficiency for cost-effective unit operation and establishing harmonious coordination among the individual ventilation units to form a cohesive system.

Helios decentralized ventilation units with heat recovery rank among the finest in their class, excelling in both categories. Their swift and uncomplicated installation process offers an economical answer for supplying and extracting ventilation in single rooms. With the reliable performance of Helios units, residents can comfortably unwind and breathe in the refreshing air surrounding them.


Centralized domestic ventilation with heat recovery

Helios offers a central KWL® system with heat recovery that ensures continuous ventilation for humidity protection according to DIN 1946-6, regardless of user behaviour. This system automatically maintains the required minimum air exchange throughout the day.

By utilizing a heat exchanger, the KWL® system effectively captures heat from stale room air and transfers it to fresh intake air. This process results in preheated/precooled and filtered supply air, creating a healthy and comfortable environment in all rooms. The heat recovery, coupled with energy-efficient EC fan technology, can reduce heating costs by up to a third.

With Helios KWL®, pollutants are kept outside, and contaminated room air is efficiently exchanged in a controlled manner. The added value of the Helios KWL® system lies in its universal and perfectly matched solutions, ensuring straightforward planning, secure installation, and maximum efficiency.


Also see: Buy Helios ultrasilence mono tube ventilation system ELS (from Blutherm)



Maintaining good Indoor Air Quality (IAQ) is essential for a healthy and comfortable living environment. The Helios ventilation system offers effective solutions to enhance IAQ, ensuring a continuous supply of fresh air and efficient removal of indoor air pollutants.

With features like heat recovery, passive cooling, and demand-controlled operation, the system promotes energy efficiency while providing optimal ventilation. The integration of Helios easyControls enhances user-friendliness, allowing convenient access and control of the ventilation units from anywhere.

The energy-efficient and sustainable design of the Helios system further contributes to a greener and more sustainable indoor environment. Whether through decentralized or centralized domestic ventilation with heat recovery, Helios offers reliable and efficient solutions tailored to meet specific needs.

By choosing Helios, homeowners can enjoy a healthier and more comfortable living environment while reducing energy costs and promoting sustainability.


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