Job sheet · Project

Air Exchanger Installation in Nun's Island

See how a 23-year-old air exchanger was seamlessly replaced with a new LifeBreath unit on Nun's Island, turning challenges into satisfaction!

By AirGreen Climatisation & Chauffage Admin3 min read
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At a glance

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The full story

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Breathing New Life into Old Systems

A Fresh Start with LifeBreath

Nestled in the scenic landscape of Nun’s Island, a recent installation by AirGreen has not only transformed a home's air quality but also reinforced why Montrealers continue to choose us for their HVAC needs. Here's a detailed account of how we replaced a 23-year-old air exchanger with a sleek, new LifeBreath model, ensuring efficiency and customer satisfaction.

Understanding the Client’s Needs

Our journey began when a Nun’s Island resident contacted us with concerns about his decades-old air exchanger. The unit had served well but finally succumbed to age and wear. Faced with a decision between costly repairs and a new purchase, the homeowner sought our expert advice.

Key Points of the Consultation:

  • Assessment of the old unit: Determined irreparable due to obsolete parts.
  • Consideration of existing setup: Evaluated that the existing ductwork and vents were still in excellent condition.
  • Client’s preference: Desire for a high-quality replacement that leverages the current installation setup.

Choosing the Right Equipment

After a thorough evaluation, we recommended the LifeBreath air exchanger. This model stood out due to its reputation for durability, superior air quality management, and energy efficiency. The decision was an easy sell; the homeowner was particularly impressed with the features that promised an enhanced home environment and potential energy savings.

Why LifeBreath?

  • High-end performance: Ensures a consistent flow of clean, fresh air.
  • Energy efficiency: Reduces overall energy costs by optimizing air exchange rates.
  • Durability: Built to last, providing peace of mind with less need for future replacements.

Seamless Installation Process

Our installation process on Nun’s Island was streamlined thanks to the preparatory work and our skilled team's expertise. We utilized the existing ductwork, which not only saved time and reduced disruption for the homeowner but also cut down on unnecessary expenses.

Installation Highlights:

  • Quick and clean: Completed within a day, minimizing inconvenience.
  • Custom fitting: Adjustments made to integrate the new unit flawlessly with the existing setup.
  • Client education: Demonstrated the new system’s features and maintenance tips to the homeowner.

Customer Satisfaction and Aftercare

The highlight of this project was the customer’s reaction. Delighted with the quick and efficient installation, and the performance of the new LifeBreath air exchanger, he expressed great satisfaction. We were able to offer him a discount due to the ease of installation, further enhancing his experience.

Post-Installation Support:

  • Warranty and support: Provided information on the product warranty and our aftercare services.
  • Follow-up: Scheduled a follow-up visit to ensure the system was functioning optimally and to answer any further questions.

Why Choose AirGreen for Your HVAC Needs?

Choosing an HVAC service is crucial for maintaining a comfortable and healthy home environment. Here’s why more Montrealers are turning to AirGreen for their HVAC solutions:

  • Expertise and Reliability: Decades of experience in HVAC systems and a track record of satisfied customers.
  • Quality Products: We only use top-of-the-line products like LifeBreath, ensuring longevity and performance.
  • Customer-Centric Services: From consultation to aftercare, our processes are designed with the customer's convenience and satisfaction in mind.

Concluding Thoughts

The successful installation in Nun’s Island is a testament to AirGreen’s commitment to quality and customer satisfaction. Whether you're looking to replace an old air exchanger or install a new HVAC system, we ensure a hassle-free process with enduring benefits. 

The steps

How the job unfolds

The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.

Step 1 of 9The on-site estimate

We locate the wall for the two outdoor hoods, the unit's spot, service access and the drain.

  1. The on-site estimateWe locate the wall for the two outdoor hoods, the unit's spot, service access and the drain.
  2. The quoteThe unit, its location and the price, in writing.
  3. The unitHung or set level, with clear access to the filters and the core.
  4. The outdoor hoodsFresh air intake and exhaust, kept apart and sealed.
  5. The ductsThe ones connected to the outside are insulated to prevent condensation inside the house.
  6. The drainConnected with its loop, when the unit needs one.
  7. The wall controlInstalled where you will see it and use it.
  8. BalancingIncoming and outgoing airflows are adjusted so the house is neither pressurized nor depressurized.
  9. The walkthroughSpeeds, filters, core: how to use it through the seasons.
The tour

What we check on a job like this one

Each number is a point we check on site. Switch between summer and winter to watch air and heat move.

Generic diagram: air exchanger, ducts and outdoor hoods

Generic illustration of this type of installation, not a survey of this job site. Tap a number.

  1. It removes stale air and brings in fresh air. The two airflows cross in the core without mixing.

  2. It recovers part of the heat from the outgoing air to temper the incoming air. Depending on the model, it also manages humidity.

  3. An outdoor hood, kept away from the exhaust so the house does not pull back the air it just removed.

  4. Humid, stale air leaves through its own hood, fitted with a damper.

  5. The ducts that connect to the outside are insulated to prevent condensation inside the house.

  6. Stale air is drawn from humid rooms and fresh air is sent to living areas. The airflows are balanced.

  7. It sets the mode and speed. You use it more when the house is humid or full of people.

  8. Depending on the model and the season, the core produces condensation, removed through a drain with its loop.

At your place

Is your home ready?

Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.

0 / 6 checked
Maintenance

Good habits, once the unit is in place

Six simple habits that keep the unit going. Your list stays on this device.

0 / 6 checked
Through the seasons

What to do, season by season

Three habits per season for this unit. They take a few minutes and prevent many calls.

  • Clean the filters and core as the manufacturer specifies.
  • Check the outdoor hoods: nests, debris, dampers.
  • Lower the speed if the outdoor air gets humid.
For your project

The right pages, at the right time

True or false

Four statements: true or false?

It all comes down to details you have just seen.

1. In an air exchanger, fresh air and stale air mix.

2. The two outdoor hoods must be kept apart.

3. An air exchanger can help with condensation on windows.

4. An exchanger never needs maintenance.

Frequently asked questions

What people ask us about this kind of work

9 questions
What does an air exchanger do?
It renews the air in the house and helps keep humidity in the right range: condensation, dry air, odours.
Does fresh air cool the house in winter?
The core recovers part of the heat from the outgoing air to temper the incoming air.
What speed should it run at?
Higher when the house is humid or full of people, lower the rest of the time. The wall control lets you adjust.
Does an exchanger need cleaning?
Yes. Filters and core get dirty. See our cleaning service.
What are the signs of poor ventilation?
Condensation on windows, lingering odours, stuffy air in closed rooms, mould in cold corners.
HRV or ERV: what is the difference?
An HRV (heat recovery ventilator) recovers heat from the outgoing air. An ERV (energy recovery ventilator) also recovers part of the humidity. The right choice depends on the house.
Should it run in winter?
Yes: winter, with the house closed, is often when humidity and odours build up. Adjust the speed to the condensation on the windows.
Does AirGreen hold the required licences?
Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
Is the estimate free?
Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.

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  • RBQ licence5645-9605-01 · 15.8, 15.10, 16
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).

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