How LUNOS Keeps Air Balanced in Real Homes

Every home breathes. Air moves in and out through tiny cracks, open windows, and ventilation systems — often in ways we never think about. But what happens behind the walls when we add mechanical fans, range hoods, or bathroom exhausts? And how does a decentralized system like LUNOS keep things balanced when everything in the home seems to be pushing and pulling air in different directions?

This article explores what happens when other systems — like bathroom fans or extra LUNOS units — affect airflow, and how the system keeps maintaining balanced ventilation automatically.

In our previous article, we explored how LUNOS uses two fans to move air both ways — in and out — keeping pressure steady and comfort consistent. In this follow-up, we’ll take a closer look at what happens when that balance is challenged by real-world factors, and why LUNOS continues to perform reliably even when conditions change. This is where we see how LUNOS keeps air balanced in real homes — quietly, automatically, and by design.

As we explore these situations, you’ll see that balance isn’t fragile—it’s a built-in strength of the LUNOS design.

Your home’s air doesn’t stand still. It’s always in motion — rising when it’s warm, sinking when it’s cool, moving between rooms, and escaping through even the smallest gaps. When you turn on a bathroom fan, open a window, or start your range hood, you’re influencing that invisible system of air movement.

Balanced ventilation systems are designed to manage that movement — replacing what leaves with an equal amount of fresh air coming in. LUNOS achieves this through synchronized fans that continuously alternate direction. This allows your home to “breathe” in rhythm, without creating unwanted pressure differences that can lead to drafts or energy loss.

This steady exchange is how LUNOS keeps air balanced from room to room, even as everyday activities change airflow.

That balance is what separates efficient, comfortable homes from those that constantly struggle with drafts, humidity, or uneven temperatures.

Homes vary in size and layout, and ventilation needs often grow as new rooms or suites are added.

Adding multiple LUNOS units doesn’t disrupt the balance — it can actually improve it. Because each unit operates in a coordinated rhythm, the system naturally evens out airflow across your home.

When an odd number of e² units are installed, the principle stays the same. It may not be instantaneously balanced at every moment, but over the 140-second operating cycle the fans bring the space back into equilibrium. Each fan pair, or single unit, passively adjusts airflow until the overall volume of air moving in and out equalizes.

Since each e² moves only a small amount of air (low CFM), these pressure shifts are extremely minor and never strong enough to affect comfort or cause noticeable drafts. In practice, the system naturally returns to equilibrium — quietly, without any controls or recalibration.

Everyday exhaust devices like bathroom fans, dryers, and range hoods temporarily pull air out of the home. In traditional ventilation systems, that can create negative pressure — drawing cold air through cracks or causing doors to move.

LUNOS works comfortably alongside these systems. When a short-term exhaust fan runs, the brief negative pressure simply encourages the LUNOS units to passively draw in a little more air. Once the exhaust fan turns off, the LUNOS cycle returns to normal operation, re-establishing balance automatically.

Because airflow through each unit is modest, the overall pressure impact on the home is negligible. Homeowners never notice a change in comfort — only steady, fresh air. The result is a system that continuously balances itself even while other mechanical fans are in use, keeping airflow smooth, stable, and predictable. The result is a system that continuously balances itself even while other mechanical fans are in use — showing how LUNOS keeps air balanced without any adjustments.

It’s a simple, quiet way of ensuring the air you breathe stays consistent—no matter what else is operating in the home.

Balanced ventilation isn’t just a comfort feature — it’s also part of Canada’s building standards. The National Building Code of Canada (NBC), under Section 9.32, specifies that mechanical ventilation systems must provide balanced airflow to maintain indoor air quality.

In plain terms, that means the system must bring in roughly as much fresh air as it exhausts.

While most centralized HRVs achieve this through professional balancing and duct testing, LUNOS meets the intent of that requirement by design. Each pair of e² units (or each Ego) exchanges equal amounts of air in both directions, maintaining equilibrium automatically — no dampers, sensors, or adjustments required.

Understanding that connection between code and comfort helps explain why balanced systems like LUNOS perform so reliably in real-world conditions.

This discussion is for informational purposes only and should not be interpreted as formal engineering or compliance advice. Always consult your designer or mechanical professional for project-specific code interpretation.

Code compliance sets the minimum expectation, but true comfort depends on steady airflow that keeps temperatures stable, doors still, and rooms equally comfortable. Balanced systems also help prevent moisture from entering walls and ceilings, protecting the long-term health of the building.

For homeowners, that balance is felt as calm air — no more stale rooms, musty smells, or cold drafts. For builders, it means fewer callbacks and simpler installations. LUNOS does the heavy lifting automatically, keeping homes healthy and efficient with minimal intervention.

Your home’s air is always moving, even when you can’t see it. LUNOS ensures that movement stays steady and predictable, maintaining a natural equilibrium no matter how many fans, vents, or windows are open.

In the end, maintaining balance is less about mechanics and more about designing a home that naturally supports the way people live.

Balanced ventilation isn’t just a technical feature — it’s what makes a home feel right. Ready to learn more about how LUNOS keeps air balanced and brings healthy airflow to your home? Reach out to LUNOS Canada to discuss the right setup for your project.

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