Restoring Optimal Performance: Service Call at Restaurant Istanbul Kebab
See how we brought a tired Gree heat pump back to life at Restaurant Istanbul Kebab in Longueuil, ensuring smooth and efficient operation for this bustling eatery.

In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
How We Turned a Worn-Out System Into a Refreshed Powerhouse
When we got the call from Restaurant Istanbul Kebab in Longueuil, we knew we were in for a challenge. The owner complained of inefficient cooling and heating, particularly during peak service hours, affecting the comfort of their customers. Upon arrival, we found a well-used Gree wall-mounted heat pump, caked with dust and grime from years of heavy-duty operation in a bustling restaurant setting.
A Heat Pump Under Siege: Dirt and Debris Everywhere
Walking into the restaurant's back area where the heat pump was installed, it was immediately clear that this machine had seen better days. The accumulation of grease, dust, and airborne particles was overwhelming. If heat pumps could sigh in exhaustion, this one surely would have.
Heat pumps in restaurants face unique challenges. Cooking oils and steam have a sneaky way of infiltrating every corner of HVAC units, leading to clogged filters and obstructed airways. Our job was more than a simple wipe-down; we needed to bring this machine back to life.

Step 1: Deep Cleaning and Debris Removal
The first order of business was a comprehensive cleaning. Using specialized brushes and non-corrosive cleaning agents, we meticulously removed every speck of dust from the fan blades, coils, and filters. This is not your typical residential clean-up; restaurant environments call for industrial-strength solutions.
We even opened the casing to flush out the stubborn build-up from within. It was fascinating to see the transformation as the unit began to look almost new. After an hour of intense cleaning, the Gree heat pump was finally free of its suffocating layer of grime.
Step 2: Verifying the Freon Levels
Next, we turned our attention to the Freon levels. A unit like this needs optimal refrigerant pressure to function efficiently. Using state-of-the-art gauges, we ensured the system had the right charge. The pressure was a bit low, so we adjusted it to factory-recommended levels.
Proper Freon balance is crucial not just for efficient cooling but also for extending the lifespan of the compressor. This adjustment alone can significantly improve energy efficiency, a detail often overlooked in standard maintenance.
Step 3: Full System Diagnostic and Performance Test
After cleaning and adjusting the refrigerant, we performed a complete diagnostic. This involved checking the electrical connections, ensuring the drainage system was unobstructed, and inspecting for any potential signs of wear or future trouble spots. Our team uses high-tech thermal imaging tools to pinpoint areas of concern that are invisible to the naked eye.
We were thrilled to find that the system responded positively. The heat pump, once laboring under the strain of built-up dirt, was now purring quietly. It was a relief to see it efficiently alternating between heating and cooling modes, maintaining a stable and comfortable temperature.
A Satisfied Customer and a Refreshed Heat Pump
The owner of Restaurant Istanbul Kebab was visibly relieved. With the heat pump back to optimal performance, his customers could dine comfortably without temperature fluctuations. Our commitment to clean and professional work paid off, leaving another happy client in our wake.
But our service didn’t stop there. We shared maintenance tips to help keep the unit in prime condition, such as cleaning the filters regularly and scheduling a deep clean every six months. We even offered a friendly follow-up to make sure everything stayed in top shape.
Key Takeaways from This Service Call:
- Importance of Regular Maintenance: Especially in environments like restaurants, HVAC units require frequent and thorough cleaning.
- Adjusting Freon Levels: Even a small discrepancy can lead to inefficient performance and higher utility bills.
- Full System Diagnostics: This step ensures long-term reliability and can prevent costly repairs down the line.

Why Choose AirGreen for Your HVAC Needs?
At AirGreen, we understand that your HVAC system is the backbone of indoor comfort, whether it’s in a bustling restaurant or your cozy home. Our professional approach, combined with top-notch expertise, makes us the go-to choice for maintenance, repairs, and installations.
From Longueuil to Montreal and the surrounding areas, we have built a reputation for reliability and excellence. We believe in going the extra mile, as shown by the thorough care we took in restoring this Gree heat pump.
When you choose us, you’re choosing quality, precision, and unmatched dedication.
Interested in Our Services?
If your heat pump or air conditioning system is struggling, don’t wait until it fails completely. Give us a call and experience firsthand why so many customers trust us to keep their HVAC systems running smoothly.
How it goes, from the first call to the end
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
The symptoms, since when, the model (on the unit's label) and the error code if there is one.
We look for the cause, not just the symptom: readings, components, installation.
Repair, part to order or replacement, depending on the failure. We explain what we found.
The repair is done and parts replaced as needed.
The unit is restarted and checked in its operating modes.
What caused the failure and what can keep it from coming back.
- Your callThe symptoms, since when, the model (on the unit's label) and the error code if there is one.
- On-site diagnosisWe look for the cause, not just the symptom: readings, components, installation.
- The optionsRepair, part to order or replacement, depending on the failure. We explain what we found.
- The workThe repair is done and parts replaced as needed.
- TestsThe unit is restarted and checked in its operating modes.
- AdviceWhat caused the failure and what can keep it from coming back.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
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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).
