Cleaning of an LG Dual Inverter wall-mounted heat pump in Outremont

When the sun reveals hidden dust: essential preventative maintenance

In the soft morning light, the front of an LG Dual Inverter wall-mounted heat pump installed on a balcony of an Outremont residential building showed clear signs of accumulated dirt. The client had noticed a slight drop in performance and unusual fan noise during operation. At AirGreen , we know that regular cleaning is key to maintaining the performance and longevity of HVAC systems.

Initial diagnosis: visible dirt, clogged fins, and reduced efficiency

Upon inspecting the outdoor unit, our technician noted:

• A thin film of dust and pollen stuck to the fins of the heat exchanger;

• Traces of dried moisture and mineral stains on the bodywork;

• A slight decrease in airflow at the fan outlet;

• No structural damage, but an urgent need for a complete cleaning to prevent the compressor from overheating.

These deposits, often invisible to the naked eye until revealed by light, impair heat exchange capacity and lead to increased electricity consumption .

Step 1: Securing and preparing the workstation

Before any operation, our team has:

• Power cut off;

• Protect water-sensitive electronic components;

• Prepared an environmentally friendly cleaning product designed to dissolve grease and microorganisms without damaging the aluminum fins.

Step 2: Deep cleaning of the condenser

The process unfolded in several phases:

1. Gently brush the fins to remove surface dust;

2. Spraying the biodegradable detergent over the entire coil;

3. Leave for 10 minutes to allow impurities to dissolve;

4. Low-pressure rinsing to avoid any deformation of the metal;

5. Wiping the exterior casing to restore a clean and neat appearance.

The fan, whose blades had accumulated a thin layer of dust, was also cleaned manually , ensuring better balance and a reduction in operating noise.

Step 3: Component verification and performance control

Once the cleaning was complete, our technician proceeded to:

• Inspection of electrical connections and refrigeration lines ;

• Checking the compressor's amperage and pressure rating ;

• A performance test measuring the temperature difference between the air drawn in and blown out.

The result was immediate: faster cooling , reduced operating noise and restored energy efficiency .

Step 4: Customer advice for sustainable maintenance

We took the time to explain to the client a few simple steps to prolong the cleanliness of their installation:

• Clean or replace the internal filters every 2 to 3 months;

• Avoid letting dust accumulate on the outdoor unit;

• Schedule an annual professional cleaning before the warm season;

• Maintain a free space of at least 30 cm around the condenser for good air circulation.

These simple measures help to reduce energy costs and preserve the longevity of the system .

AirGreen's expertise at the service of Montreal comfort

At AirGreen , we combine technical expertise and adherence to environmental standards to provide HVAC cleaning services that meet the expectations of residents in Outremont and throughout the Greater Montreal area. Every service aims to maximize performance, improve air quality, and ensure lasting comfort.

Whether your system is an LG Dual Inverter heat pump , a wall-mounted air conditioner, or a multi-zone system, our team has the equipment and skills to restore the performance and efficiency of your installations .

AirGreen – HVAC system cleaning experts in Outremont, Montreal, Laval, and on the North and South Shores.
Professional maintenance means sustained performance and a reduced energy bill.