What are the signs of a refrigerant gas pipe leak in my air conditioner?

Common signs include decreased cooling efficiency after 1 to 3 days of the gas top-up, hissing or bubbling noises, ice formation on the refrigerant line, and an oily residue on or around the Aircon condenser unit.

What causes refrigerant gas pipe leaks in air conditioners?

Refrigerant gas pipe leaks in air conditioners can stem from several factors. Over time, wear and tear can compromise the integrity of the pipes, leading to leaks. Refrigerant gas pipe leaks can result from improper chemical washing of air conditioners. Harsh or incorrect cleaning agents can corrode the pipes and connections, leading to leaks. Additionally, inadequate rinsing can leave residues that accelerate wear and tear. Factory defects and improper installation can result in weak points that eventually give way. Physical damage to the refrigerant lines, whether from accidental impacts or environmental factors, can also cause leaks. Additionally, the constant vibration of the air conditioner can gradually loosen joints, creating gaps through which the refrigerant gas can escape.

Can I fix aircon gas leak myself?

It is not recommended to fix a refrigerant leak yourself. Refrigerant handling requires special tools (eg., pressure gauge, refrigerant scale, etc) and certification due to the hazardous nature of the chemicals. It’s best to contact a BCA Trained Installer.

How can I prevent refrigerant leaks in my air conditioner?

Proper Chemical Washing: Use appropriate, mild cleaning agents and ensure thorough rinsing to prevent corrosion and residue build-up that can damage refrigerant pipes and connections. Regular Maintenance: Schedule regular professional maintenance to check and clean all components, ensuring no build-up or damage that could lead to leaks.

How much does it cost to repair a refrigerant gas pipe leak?

The cost to repair a refrigerant gas pipe leak varies depending on the leak’s severity, location, and refrigerant type. Typically, it ranges from $350 to $600, including our BCA-licensed installers’ fees and refrigerant refill. Our pricing covers all necessary submissions, ensuring repairs are conducted by certified air-conditioning unit installers as mandated by the Building and Construction Authority.

How long does it take to repair a refrigerant leak?

The time required to repair a refrigerant leak can vary depending on the location and severity of the leak. Minor leaks might take 2 hours to fix, while more severe or difficult-to-access leaks could take 4 hours.

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20 Jul 2024

HDB Aircon Installation- Mitsubishi System1, MUY-GP18VF at 183D Boon Lay Avenue on 17 Jul 2024

The customer wishes to install a Mitsubishi brand System 1 air conditioner.
All installations are carried out by our BCA-trained aircon installers, ensuring compliance with BCA regulations.
Homeone provides a one-year engineering warranty for Mitsubishi Aircon System 1.
Manufacturer warranty for Mitsubishi Aircon System 1.
Our Homeone installation service includes the submission of the necessary HDB Aircon Installation Submission Form AC-02.
Our service guarantees that all installations adhere to HDB safety standards, providing a reliable and compliant solution for your air conditioning needs.

Project location
183D Boon Lay Avenue
Property type
HDB

HDB Aircon Installation – Mitsubishi System1

Condensing Unit (CU) Model: MUY-GP18VF

Fan Coil Unit (FCU) Model: MSY-GP18VF

HDB Aircon Installation Job Scopes:

Site Inspection and Planning

To begin the air conditioner installation, assess the area to determine the optimal locations for both indoor and outdoor units.
Measure and mark the positions for mounting, ensuring accuracy and level alignment.
This step requires a tape measure, marker, and level to guarantee precise placement and secure installation.

Mounting the Indoor Unit

Secure the mounting plate to the wall by first drilling holes for the plate and pipes.
Use screws and wall anchors to firmly attach the plate, ensuring it is level and stable.
A drill, screws, wall anchors, level, and stud finder are essential tools for this task to ensure a strong and accurate installation.

Creating a Hole for the Piping

Drill a hole through the wall for refrigerant pipes, the drain pipe, and power cables using a drill with a hole saw attachment.
A drill, screws, wall anchors, level, and stud finder are essential tools for this task to ensure a strong and accurate installation.
Preparing the Refrigerant Piping
Cut the pipes to the required length, flare the ends, and connect them to the indoor unit.
These steps ensure the proper fit and secure connection for optimal system performance.
And run trunking for the refrigerant pipes.
Installing the Outdoor Unit

Position the outdoor unit on an aircon ledge, and secure it with mounting brackets or bolts.
If there is no aircon ledge in the HDB or the existing ledge lacks sufficient space, a bracket must be installed for the outdoor unit.
This bracket must comply with BCA technical requirements.
Use wrenches for fastening to ensure a stable and secure installation.
Connecting the Electrical Wires

Connect the wires from the indoor unit to the outdoor unit, ensuring proper grounding and secure connections.
Ensure the wire size for the air conditioning connections is 2.5mm, and use a 20A isolator for the Mitsubishi System 1.
Use wire strippers, screwdrivers, and a multimeter for accurate and safe electrical work.
Connecting the Refrigerant Piping

Connect the pipes from the indoor unit to the outdoor unit, ensuring all connections are secure and leak-free.
Use adjustable wrenches, a pipe wrench, and a leak detector to check and tighten connections.
A brazing machine may also be needed for precise fitting and sealing.
Sealing the Hole and Insulating the Pipes
Seal the hole in the wall to prevent air and water ingress, and insulate the refrigerant pipes to avoid condensation.
Use insulation tape and gun for effective sealing and insulation.
Vacuuming the Lines and Charging the System
Use a vacuum pump to remove air and moisture from the refrigerant lines before charging the system with the correct refrigerant.
Employ a pressure gauge set, refrigerant scale, and the appropriate refrigerant for accurate and efficient system charging.
Testing the System
Power on the system and verify its operation, testing for cooling efficiency while listening for any unusual noises or vibrations.
Use a thermometer, pressure gauge, and multimeter to ensure proper performance and troubleshoot any issues.
Documentation and Cleanup
After testing all connections and fittings, document the process, including the amount of refrigerant charged.
Ensure all tools are collected and the work area is left clean.