Ventilation and COVID-19

At Aldes, healthy indoor air is not just what inspires us, it is what we deliver.  During these past few months of the COVID-19 crisis, we have all listened as infectious disease experts have attempted to provide answers to innumerable questions surrounding the transmission of the virus.

Many of those questions are from homeowners and building maintenance managers wondering how to reduce the spread of COVID-19 within a building or home using their HVAC system.

An abstract of a study published recently in the journal of Respiratory Medicine, The Lancet, links mechanical ventilation with a dramatic reduction in the time that droplets containing COVID-19 stay airborne in a room.  The more air exchange that an area gets, the less time particles remain in the air at mouth-level where they can be transmitted from person to person.  The study shows that in a well-ventilated space, the average time for half of the particles to fall is 30 seconds, whereas in the same space without ventilation, the time is over 5 minutes – that is 10 times longer!

Knowing this, to help keep yourself safe if you are in close proximity to someone who may have  COVID-19, it is very important to ensure that your ventilation system is operational and well-maintained.

If you have an HRV or ERV:

  • Ensure that the filters are clean.
  • Remove any blockages in the intake and exhaust grilles on the outside of the building.
  • Set the HRV to air exchange mode. High speed will bring in more outdoor air and move the air faster.
  • Do the “tissue test” at the air supply and exhaust grilles to ensure that air is flowing. Take a tissue and hold it up to the grille. It should quickly stick to the exhaust grilles and quickly blow away from air supply grilles.  If the tissue test shows no airflow at one or more grilles, contact a ventilation contractor.
  • Keep inside doors open at least slightly to allow air to flow freely in and out of the ventilation system.

Remember, the important thing is for the “bad” air to be replaced by fresher air.  Do not use ceiling fans or pedestal fans that recirculate air within the same room – in fact, these can be even worse than having no ventilation at all!

Finally, opening a window is always a great way to increase the air exchange when weather permits.

Aldes is at the forefront of Healthy Living – delivering fresh air to occupants of all buildings, for health, well-being and a better life for all of us.

Written by Chris Bender, Business Line Manager (ERV/HRV)

Charlie West Condos in Ontario to include 308 ALDES InspirAir® Compact

Charlie West Condos in Kitchener, Ontario to include 308 ALDES InspirAir® Compact ERV (Energy Recovery Ventilator) with EC motors providing high-efficiency ventilation and improve indoor comfort to residents.  With its impressive height reaching 26 storeys, Charlie West will create a sleek silhouette rising above Downtown Kitchener. The 245 chic condominium suites feature modern, high-end finishes and expansive windows that offer unrivaled views of Victoria Park with its majestic trees and lush landscaping.  Living there puts you directly on the new ION Light Rail Transit route. It’s a short walk from Google Canada’s new office and Kitchener’s Innovation District (home to global tech companies, startups and universities). The development is scheduled for completion in 2021.

Aldes InspirAIR® Compact Multi-Family Energy Recovery Ventilators (ERV) have been thoughtfully engineered for use in apartments, condos, and other multi-family dwellings. The ideal in-suite ventilation solution for high-rise construction, the E80-HRX and E130-HRX deliver exceptional performance in a compact, easy-to-install package. Both models include EC motors, Aldes’ exclusive EvacMAX™ on-demand boost for maximum ventilation, and FLEXControl, electronic calibration that eliminates the need for balancing dampers and improves overall efficiency.

Manufacturer’s representative O’Dell Associates, Inc. facilitated the sale of ALDES products at Charlie West.

Developer Momentum Partnership.

Enhancements to our Light Commercial Heat and Energy Recovery Ventilators

Deliver Healthy Air and Optimize Efficiency with Variable Speed Ventilation!

  • 0-10V inputs to continuously adjust the speed of the H/ERV. No more over- or under-ventilating providing the optimal amount of fresh air for any occupancy situation.
  • Wire the H/ERV directly to the building electrical main using our terminal block – no more power cords with plugs that need a separate electrical box to be installed.

Aldes is pleased to announce our Light Commercial H/ERVs can now be wired for continuously variable ventilation using one or two 0-10V inputs (one for the supply motor and one for the exhaust motor) which works with both EC and AC motors.  Or, you can still wire the units with the 24V dry contacts as well as Aldes wall controls – both options are supported on the same H/ERV.

In addition, all the H/ERVs now have a terminal block for the power connection, instead of a power cord with plug.  This makes it easier and saves the electrician time wiring the system to the building’s power supply and complies with electrical codes in North America.

The new models have new part numbers, to distinguish them from the previous units.  The new model numbers are the same as the old ones, with the addition of “-N”. For example, the E650L-Fi-EC becomes E650L-Fi-EC-N.

In addition, the -Ri models for recirculation defrost are no longer available. To order H/ERVs with recirculation defrost, simply add the appropriate recirculation kit to the order:

P/N 683900: Recirculation defrost option for 650 models

P/N 683950: Recirculation defrost option for 1100 models

P/N 683960: Recirculation defrost option for 1800 models

The existing models with power cords will continue to be available until
June 30, 2020.
Please do not hesitate to contact Aldes with any questions.

Click here to view the Light Commercial Product Line

Increase Air Exchange in the Building

At ALDES North America, the health and well-being of our customers, associates, and communities is our top priority. We understand the concern and uncertainty many are experiencing surrounding the coronavirus (COVID-19) and are committed to being responsive to your needs as the situation evolves.

Ventilation and Air Renewal solutions play a vital role in helping protect the well-being and health of people in all indoor environments. The Center for Disease Control (CDC) recently provided guidance on increasing ventilation to minimize the impact COVID-19 could have in work environments. By following the recommended guidance, it reduces recycled air and increases elimination of possible harmful contaminants.

As most people are spending a lot of time at home these days, with schools and businesses closed, and living through shelter-in-place orders, everyone is more aware of the potential hazards that can come from unhealthy air conditions inside their own homes.

At Aldes, this is the core of our business. Providing ventilation solutions that renew and replace indoor air, control and balance airflow to prevent unwanted air from entering adjacent spaces, and allow compartmentalization of apartments, so tenants have full control over their environments. We recognize that indoor air quality in homes and business has always been important to ensure the safety and health of people.

For over 37 years, Aldes North America has resolved challenging indoor air quality issues by inventing products and adapting solutions to meet these challenges.  We continue our endeavor to provide superior solutions which is driven by the desire to provide healthy indoor environments for people at work and at home.

If you are interested in learning how to improve your building ventilation, contact us at 800.255.7749 (US) or 800.262.0916 (CAN) or at, or contact our reps in USA and Canada.


Pour mieux servir ses clients, Aldes transforme ses activités en Amérique du Nord

Le succès exige un changement audacieux. Aldes est heureux d’annoncer un nouveau chapitre pour ses activités en Amérique du Nord. Le 1er janvier 2020, Aldes Canada et American Aldes évolueront vers une seule entreprise : Aldes Amérique du Nord. En combinant les ressources et l’expertise en une seule entité, Aldes Amérique de Nord surpassera la somme de ses constituantes.

La transformation en Aldes Amérique du Nord offrira une expérience client améliorée à nos partenaires en combinant l’expertise de nos équipes de ventes et de service à la clientèle, ce qui permettra d’améliorer le temps de réponse et de réduire le délai de livraison. Grâce à cette transformation, la croissance d’Aldes devrait tripler d’ici 2025.

La voie de la croissance

Au cours de ce processus, nous allons embaucher des talents supplémentaires, combiner des ressources et étendre notre présence partout en Amérique du Nord. Tout cela fait partie de notre mission d’être le chef de file en amélioration de la qualité de l’air et en solution écoénergétiques en ventilation tant au niveau résidentiel que commercial.

En tant qu’entité, Aldes Amérique du Nord combinera les forces d’Aldes Canada et d’American Aldes. Nous continuerons d’être un chef de file de l’industrie dans les produits résidentiels et commerciaux de ventilation avec récupération de chaleur et d’énergie. La transformation ouvrira le marché du Canada aux produits de régulation du débit d’air et de zonage (contrôles automatiques du débit d’air, ventilateurs résidentiels en ligne et dispositifs brevetés de contrôle de la demande pour des applications commerciales) actuellement uniquement offerts aux États-Unis. Le nouvel organisme offrira un avantage concurrentiel durable grâce à l’innovation continue dans les produits et les solutions que l’on trouve dans les maisons et les bâtiments performants en Amérique du Nord.

Quelle est la prochaine étape ?

Nous sommes ravis de ce changement. Toutefois, en attendant, ce sera comme d’habitude pour la famille Aldes. Les amis, les partenaires, les clients et les autres intervenants d’Aldes Canada et d’American Aldes peuvent s’attendre à une transition fluide. Pour plus d’informations sur la transformation, visitez et . Le nouveau site Web d’Aldes Amérique du Nord sera lancé au début de 2020.

To Better Serve Customers, Aldes is Transforming Our North American Operations

Success requires bold change. Aldes is excited to announce a new chapter for our operations in North America. On Jan. 1, 2020, American Aldes and Aldes Canada are becoming one entreprise: Aldes North America. The companies are combining their resources and expertise into a single, cohesive entity that will be even greater than the sum of its parts.

Transforming into Aldes North America will provide an improved customer experience for our partners with one cohesive sales and customer service team, providing decreased lead time and increased responsiveness. Through this transformation, Aldes’s growth is projected to triple by 2025.

The Road of Growth

During this process, we’ll be hiring additional talent, combining resources and expanding our footprint throughout North America. It’s all part of our mission to be the leader in providing superior-quality IAQ and energy-efficient HVAC solutions to the residential and commercial markets.

As one being, Aldes North America will combine the strengths of American Aldes and Aldes Canada. We will continue to be an industry leader in both residential and commercial air-to-air heat and energy recovery products. The transformation will open the market in Canada for airside products (automatic airflow controls, residential in-line fans and patented demand control devices for commercial applications) currently only offered in the U.S. The new company will offer a sustainable competitive advantage through continual innovation in products and solutions found in high-performing homes and buildings across North America.

What’s Next?

We’re excited about the rebranding. In the interim, however, it will be business as usual for the Aldes family. The friends, partners, customers and other stakeholders of American Aldes and Aldes Canada can expect a seamless transition. For more information on the transformation, visit and The new Aldes North America website will launch in early 2020.

New registration tool for home owners!

Dealing with warranty can be lengthy and frustrating. At Aldes, we want to make sure that if a problem arises, it’s taken care of in an efficient manner. This is why we created a registration tool for everyone with an Aldes HRV or ERV at home. Filling up a quick form about your unit today will allow us to handle any warranty claim quickly and efficiently. We can also advise you of any important information that may affect you.

Take a few minutes to complete the registration form here.

Should I use my HRV/ERV in the summer?

Should you run your heat- or energy-recovery ventilator (HRV or ERV) in the summer?  The answer depends on your home’s air conditioning system, your ERV wall control, the outdoor temperature and, most importantly, the outdoor relative humidity.

As a rule of thumb, if you are more comfortable outside than inside your house, you should run your air exchanger in the summer.

First, let’s talk about ERVs.  An ERV works by exchanging your indoor air with fresh outdoor air, while recovering part of the heat and moisture difference in the airstreams.  Simply put, your ERV keeps the heat and humidity where they are. In summer, the heat and humidity are outside and your ERV will keep most of it from getting inside with your ventilation air.

If your indoor air and the outside air have about the same temperature and relative humidity (for example, if you keep the windows open), there is really no need to run the ERV in order to have good indoor air quality.

However, if you have air conditioning and the indoor air is cooler and dryer than the outside air, it is generally a good idea to run your ERV intermittently throughout the day.  Assuming you keep the windows closed while the AC is running, you’ll be needing fresh air to prevent CO2 buildup and to avoid that stale “airplane cabin” smell.  You can run your Aldes ERV intermittently depending on your wall control:

  1. Manual dehumidistat: Keep the dehumidistat set to OFF. If you have a timer wall control, you can use it to periodically run the ERV when the house is occupied, especially just before going to sleep.
  2. Mode control:  Set to OFF and use the timer as described above.
  3. Speed Control: Select the intermittent setting (20 minutes low speed exchange followed by 40 minutes off).
  4. Digital multifunction control: Select ECO 2 mode (20 minutes low speed exchange followed by 40 minutes off)
  5. Electronic Humidistat with LCD: Select the intermittent mode (20 minutes low speed exchange followed by 40 minutes off).

Running your ERV to get fresh air instead of opening the windows will have the added benefit that the incoming warm air will be partially pre-cooled and dehumidified thanks to the energy-recovery core.  The air conditioner will not have to work as hard to bring the fresh air to your desired temperature.

What about HRVs? If you have an HRV (heat-recovery ventilator) rather than an ERV, the only difference is that the humidity in the outdoor air will pass through the HRV core without any moisture transfer, and the cooler indoor air may feel damp (because cold air has less ability to contain water vapour than warm air).  You may consider using a dehumidifier in addition to the air conditioner.

How can you tell if you have an Aldes HRV or ERV?  Just have a look at the model number: if it starts with an “E”, you have an ERV; if it starts with an “H”, it’s an HRV.

In order to maximize your house’s indoor air quality and consequently your health, you should take every opportunity when the outdoor conditions are comfortable (for example at night) to run your air exchanger.



Go Cordless with InspirAIR® Compact

The InspirAIR Compact line of HRVs and ERVs for multi-unit residential buildings is now ready for hard-wiring applications.  All units can be ordered with an ETL-approved junction box instead of a power cord and plug.  So now engineers and installers have the option to bring a conduit directly to the unit, instead of having to install additional receptacles and face-plates to accommodate the plugs.

The new models are:

  • H80-HF-N: HRV with exhaust defrost
  • H80-HR-N: HRV with recirculation defrost
  • E80-HF-N: ERV with exhaust defrost
  • E80-HRG-N: ERV with free cooling
  • E80-HRX-N: ERV with EC motors and free cooling
  • E130-HR-N: Larger capacity ERV with recirculation defrost (and mirror version E130-HR-N-M)

New spec sheets and installation manual are all available online now. Contact your account manager or for more information.


Discover the new version of Selector!

Find and configure the ideal HRV/ERV for your project with the new version of Selector!

Finding the product that meets your needs doesn’t need to be complicated! You aren’t sure which model is best suited for your commercial project? Try our selection software to save time!

The latest version of the software is now available for download HERE. Please note that it is an executable file (.exe) and is only compatible with the Windows operating system.

Once the software is installed, start the Selector and fill in your contact information. Enter your e-mail and click the button marked “get registration key by e-mail”. Do not close the program.

Check your e-mail to find the key. Return to Selector and enter the registration key. Click “Key Validation” to activate your copy of the software.

InspirAIR Commercial Launches!

Get inspired — and inspire confidence in your customers — with brand new InspirAIR Commercial indoor and outdoor heat- and energy recovery ventilators!

This product line was created with the needs of the construction industry in mind: competitive prices, short lead times, and offering a wide selection of options to fit the requirements of the majority of building designs.

The latest version of our Selector software allows you to create projects including InspirAIR Commercial. Download a copy or update your existing software by clicking “Check for updates” on the initial screen.

With four models covering airflows between 500 and 4000 cfm, and four types of AHRI-certified air-to-air heat recovery technologies, InspirAIR Commercial has the flexibility you require, and is easy to select and configure using our Selector software and Revit families.

Among the new features are:

  • Air exchangers with enthalpy wheels and EC motors for 500 to 4000 cfm. And with smaller cabinets than the current Low Profile series!
  • Bypass damper option for operation in economizer mode, without needing to connect additional ducts or components outside the units.
  • Bigger airflow ranges for each model, allowing you to maximize heat-recovery efficiency. For example at 1500 cfm, you can choose between three models (P15, P20 and P30) depending on your target efficiency requirements.
  • Standardized dimensions for the cabinets and the extensions for bypass channel and pre- and post-heating coils.
  • Revit families available for engineers.

We invite you to check out the full set of technical specifications.

The InspirAIR Commercial will be replacing the Standard series and the Low Profile wheel models over the course of 2019:

  • 05-Feb-2019: Quoting opens for InspirAIR Commercial.
  • 22-Feb-2019: Last day to issue new quotes for Standard series and LWxxxx models.
  • 19-Jul-2019: Last day to place an order for Standard series and LWxxxx models.

Training sessions will be announced in the coming weeks. Please contact your account manager or one of our technical sales representatives for more information on this exciting new product family!

New version of Selector software is now available!

Selector saves you a lot of time when choosing the right commercial HRV/ERV.

Just select your airflow requirements, design conditions and other criteria, and Selector will propose one or more product models that meet your needs. Then you can generate a submittal PDF with all the project details for quotes and approvals.

The new version now includes the new InspirAIR Commercial range, new Light Commercial HRVs and ERVs, new coil calculations, and many bug fixes.

If you are already using Selector on your Windows device, all you need to do is start it and click on the “Check for updates” button on the title screen.

If you do not already have a copy, please download the installer. Please note that it is an executable file (.exe) and is only compatible with the Windows operating system.

Once the software is installed, start the Selector and fill in your contact information. Enter your e-mail and click the button marked “get registration key by e-mail”. Do not close the program.

Check your e-mail to find the key. Return to Selector and enter the registration key. Click “Key Validation” to activate your copy of the software.

Does my Heat Recovery Ventilator (HRV) have a problem?

Does my Heat Recovery Ventilator (HRV) have a problem? Do you have condensation in your windows?

No, your HRV is not the problem.
An HRV is an effective, energy-efficient and healthy method of managing moisture in your home in the winter, but your HRV does not remove condensation from your windows, it removes excess moisture in the air.

If condensation forms in your windows, it is because the temperature of the surface of the window is lower than the dew point of the surrounding air. There may be several reasons why the window temperature is below the dew point of the air such as poor window quality or too high a dew point.

The condensation in your windows is the same as the condensation that forms on a cold beverage can on a hot, humid summer day. The surface temperature of the can is lower than the dew point of the air outside.

The dew point of the air depends on the amount of water vapour in the air. The higher the relative humidity, the higher the dew point and the more condensation will occur at high temperatures. For example, air at 21°C and 40% relative humidity has a dew point of 8°C.

All surfaces with a temperature of 8°C or less, such as a window, will become covered by a layer of water droplets.

To eliminate condensation in windows, there are two solutions.

  • Lower the dew point of the surrounding air, or
  • Increase the temperature of the window surface

To lower the dew point

Your HRV is the perfect appliance for lowering the dew point of the air when it is cold outside.  Your HRV will evacuate moist, stale air from your home and replace it with fresh, dry air from outside, lowering the dew point. Why is the air outside dryer? Because cold air holds less water vapour than warm air. When cold air is heated, first through the HRV and then through the home’s heating system, the relative humidity drops.

There are other technologies that can also lower the dew point of your home, for example, a dehumidifier. However, a dehumidifier does not supply any fresh, filtered air.

Increase the temperature of the window surface

The only other possible solution to eliminate condensation in the windows is to increase the temperature of the inner surface of your windows.

Window panes are exposed to very large temperature differentials in the winter. Some windows are better than others at preventing heat loss through transmission. For example a single pane will have almost the same temperature on the inside surface as the outside surface, whereas triple pane windows with air gaps will provide more insulation and significantly reduce heat loss, meaning the inside surface temperature will be closer to the room temperature.

The most effective method for increasing the temperature of the inner window surface is to promote air flow across it. Window treatments, such as curtains or blinds, create “microclimates” near the window and lower the surface temperature, which helps to form condensation.

To promote air circulation near windows, you can:

  • Open the curtains and raise the blinds
  • Use a fan to blow air toward the windows
  • Place a heat source under the window

If your windows are very old and need to be replaced, energy efficient windows (such as triple-pane) will also help ensure the interior surface temperature of the window is higher.  Regardless of the quality of the window, if a “microclimate” is created on the window surface due to a lack of air movement, there could still be some condensation, depending on the outdoor temperature and the indoor dew point.

Are Bathroom Fans Obsolete?

The residential ventilation strategy of using an HRV and ZRTs to ventilate bathrooms, instead of using individual bathroom fans, is more cost effective for the builder and for the home owner. Not only is the initial cost of the equipment and installation less expensive: the operating costs are lower as well.
Rather than installing energy-wasting bathroom fans that require individual ducting, it is more advantageous to install zoned exhaust terminals that direct the ventilation capacity of the HRV to the right place at the right time, while recovering most of the heat in the exhaust air.
And there are many other advantages to our approach:

  • Tighter building envelope and more attractive home exterior (fewer penetrations)
  • More balanced ventilation, avoiding negative pressure
  • Quieter operation
  • Avoids user error of leaving the fans on for extended periods

Please check out our new video and go to the Aldes Professional’s Zone (or contact your sales representative) for a copy of our White Paper that shows in detail how Aldes HRVs with ZRTs are winning combination.

Autumn is HRV Maintenance Season

Across Canada, heating season is fast approaching. While it is still warm out, it’s an ideal time to open up your HRV and do the annual maintenance: clean the heat-recovery core, wash or replace the filters, and ensure that the drains are clear of any blockages. Our new and improved residential installation and maintenance guide offers many helpful tips for maintaining your HRV and keep healthy air flowing through your home during the winter months.

If you or your clients have an older HRV that is inefficient or is no longer functioning, Aldes HRVs are an easy choice for a replacement. Our compact top port units can hang in the same place as the old unit and connect up easily with flex duct to the existing ductwork. In many cases you can even connect the existing wall controls to the Aldes HRV without re-wiring. Contact us and we can help you assess whether your existing HRV can be replaced with a new Aldes ENERGY STAR® model.