Building Air Conditioning · Homes & Businesses
Building AC Refrigerant & Leak Detection
Building air conditioning refrigerant services cover leak detection, recovery, repair, pressure testing, evacuation and correct charge verification. No routine top-up is offered without diagnosing loss; vehicle air conditioning is not serviced.
A sealed building circuit, not a vehicle regas
This retained address is for fixed building air conditioning only. We do not service vehicle AC. A healthy sealed circuit should retain its refrigerant; weak cooling does not automatically mean a low charge. Dirty filters, coils, fans and controls must be assessed first.
Repeatedly adding refrigerant without addressing loss is not a maintenance plan. Confirm the refrigerant from the equipment plate and records, consider system age and available parts and agree the diagnostic scope before opening the circuit.
Leak detection and recovery
Review operating history and accessible joints, valves, pipework and coils. Use suitable leak-detection methods for the refrigerant and suspected location. If the circuit must be opened, recover refrigerant into suitable cylinders; never vent it as a shortcut.
A concealed or intermittent leak can require staged investigation. Explain access limitations and agree any further tracing. Recovery and handling require appropriately qualified personnel and equipment suitable for the refrigerant, including flammability precautions where relevant.
Repair, pressure testing and evacuation
Repair or replace the identified leaking part using model-compatible materials. Pressure-test with the appropriate dry inert gas and manufacturer-approved procedure: do not use oxygen or casually exceed a component’s pressure rating.
Once the circuit is proven tight, evacuate it using suitable tools and verify the vacuum holds. Correct charging follows the specified refrigerant, factory charge, pipework allowances and service procedure. Charge by the required method and verify operation; pressure alone does not establish the correct charge.
F-Gas records and post-work verification
Applicable leak-check duties depend on refrigerant, charge, equipment and jurisdiction. Keep recovery, repair, charging and leak-check records where required. A maintenance visit does not replace a statutory leak check; consult the F-Gas page for scope and official guidance.
After restoring service, test operation and document the refrigerant quantity, repaired location and relevant readings. Arrange any required follow-up leak verification. If a coil, valve or compressor cannot be repaired economically, compare replacement options before committing to more refrigerant.
Quote factors and booking
All work is quoted on request. The scope depends on the equipment, fault, access, labour, parts and any refrigerant work. Diagnostic findings and the proposed repair should be agreed before additional work proceeds; a service visit is not a promise that every repair or replacement part is included.
Refrigerant type and quantity, leak accessibility, recovery, pressure-testing time, evacuation, component availability and safe outdoor-unit access all affect the quote.
Use the ServiceM8 booking form for an engineer or quotation with the site postcode, indoor and outdoor model references, fault description, controller code and access requirements. Select the requested urgency; emergency or within-48-hour selections are requests, not guaranteed attendance times. Refrigerant and electrical work require appropriately qualified personnel.
Building refrigerant services: a controlled repair sequence
Refrigerant is not consumed during normal building-AC operation. A suspected shortage requires a cause-led investigation, checking airflow, EEV operation, sensors and compressor inverter behaviour before concluding that charge is low. Review model plates, refrigerant type, installation charge and prior repair records. Different refrigerants require different handling and equipment; the retained regas URL describes building refrigerant work only. It is not an automotive recharge service.
Locate loss using methods suitable for the circuit and safety conditions, including accessible joint inspection, appropriate electronic detection and other manufacturer-approved tests. Recover refrigerant when needed rather than venting it. Define the repair before recommissioning; a leaking flare, valve, coil or pipe section has different implications. Where brazing is required, use appropriate controlled procedures and protect components. Oxygen or compressed air must not be used as a substitute for an approved pressure-test medium.
Pressure testing, evacuation and exact charge verification
After a circuit repair, strength and tightness testing follow the applicable equipment requirements with suitable dry nitrogen and regulated equipment. Pressure limits come from the manufacturer and circuit design, not a universal value copied across brands. Temperature changes affect standing pressure readings, so interpret the test correctly and record its conditions. Once integrity is established, evacuate with suitable equipment, measuring the result and checking for moisture or leakage according to the specified procedure.
Charge by the correct measured method using the factory requirement and pipe-length allowances, not solely by an outlet temperature or suction pressure. Daikin R410A VRV and R32 VRV 5, Toshiba SHRM generations and other assessed systems have different requirements; R32 is not a retrofit substitute for R410A. Its A2L classification brings model-specific safety provisions. Compatible valves, seals, coils, oil and compressors must suit the refrigerant and exact equipment.
Operating checks, records and cost factors
After charging, verify cooling and heating where appropriate, airflow, return/supply temperature split, stable circuit data and EEV response. On shared systems, test representative connected units rather than only the nearest room. Check drainage because restored cooling produces condensate. Where a communication or control problem remains, identify it separately from the refrigerant repair. Complete required F-Gas records and arrange the applicable follow-up verification after a leak repair; a one-time pressure reading is not a complete handover.
Quotation depends on refrigerant type and quantity, leak accessibility, required recovery, components, pipework, safe access and testing time. A concealed pipe leak or a large VRF circuit cannot be priced as a routine top-up. Operator leak-check duties depend on the charge, refrigerant and jurisdiction, and are cross-linked to the F-Gas page. Send model plates, pipework details, service history and postcode through ServiceM8. Vehicle air conditioning is not serviced, and no routine top-up is offered without diagnosing loss.
Frequently asked questions
Do you service vehicle air conditioning?
No. This page covers building refrigerant circuits only; vehicle air conditioning is not serviced.
Why not simply add refrigerant?
A sealed system should retain its charge. Establish the cause of poor performance and investigate confirmed loss before properly scoped repair and charging.
Can R32 replace R410A in an existing unit?
No generic substitution is offered. The equipment, refrigerant approval, components and safety provisions must match its specified design.
What happens after a leak repair?
Appropriate integrity testing, evacuation, measured charging, operating checks, F-Gas records and the legally applicable follow-up leak verification are arranged.
How is the required quantity calculated?
Use the exact manufacturer requirement and any additional pipe-length or system allowances, verified with controlled measured charging.
How is refrigerant work quoted?
On request after considering refrigerant, circuit size, loss location, components, recovery, access and testing. Submit the details through ServiceM8.