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20-Point Geothermal Health Checklist
- Visual inspection of indoor unit and vibration isolation
- Power quality, earthing, terminal tightening
- Controller/PCB diagnostics and thermostat calibration
- Sensor/thermistor validation and addressing
- Indoor coil and blower cleaning; airflow verification
- Condensate tray and drain slope checks; sanitisation
- Heat-exchanger inspection and fouling assessment
- Strainer and filter cleaning; pressure drop review
- Loop pressure and static checks (cold/hot)
- Flow rate validation (GPM per ton) and balancing
- Flush & purge evaluation; air removal if needed
- Antifreeze concentration test and top-up (freeze margin)
- Manifold/HDPE joint inspection; leak suspicion review
- Nitrogen pressure testing when indicated
- Deep evacuation to microns prior to charge/repair
- Refrigerant charging per manufacturer method; SH/SC
- Reversing valve and EEV/TXV operation checks
- Compressor amperage/vibration readings
- DHW/desuperheater function test (if present)
- Final delta-T, performance notes, and maintenance report
What We Do
Breakdown diagnostics and repair
loss of cooling/heating, lockouts, sensor/thermistor faults, reversing valve/EEV/TXV issues, compressor and fan failures, PCB/controls, thermostat errorsPreventive service and deep cleaning
indoor coil/blower hygiene, condenser/heat-exchanger cleaning, strainers and filters, condensate management, odour removalGround loop & hydronic services
flush and purge (air removal), pressure tests, leak location and HDPE repairs, antifreeze preparation and top-up (typically propylene glycol), flow verification and balancingPumps and flow centres
circulation pump replacement, check valve service, expansion tank checks, air separator and manifold inspectionsRefrigerant circuit work
nitrogen-purged brazing, deep evacuation to microns, precise charge by weight/SH/SC; superheat/subcool validationElectrical & controls
supply/earthing checks, terminal tightening, communication/control wiring, controller configuration, BMS handshakes where applicableInstallation, retrofit & relocation
feasibility survey, load calculation, loop design coordination (vertical/horizontal/pond/open-loop), drilling/trenching partners, manifold/headers, buffer tanks, DHW/desuperheater integration, commissioned start-upRe-commissioning & optimisation
seasonal mode tuning, oil-return/flow checks, energy health reports, noise/vibration mitigationAnnual Maintenance Contracts (AMC)
scheduled service, priority response, periodic health reports, preferential pricing
