Knowledge centre
Straight answers to the questions our dispatch desk fields every day — written by the technicians who do the work, not by a copywriter.
Heat Pumps · 5 min read
Do heat pumps really save electricity?
How heat pump hot water compares with element geysers in real Gauteng conditions, and where the savings actually come from.
Emergency · 5 min read
Emergency refrigeration checklist: what to do in the first 30 minutes
The exact steps that protect stock and speed up the repair when refrigeration fails after hours.
Refrigeration · 6 min read
Cold room temperature problems: causes and fixes
A cold room drifting above 4°C is a food-safety problem before it is a mechanical one. The fault tree we work through on site.
Maintenance · 5 min read
How often should an air conditioner be serviced?
Service intervals for homes, offices, restaurants and dusty industrial sites — and what a real service includes beyond a filter wipe.
Troubleshooting · 4 min read
Why is my freezer leaking water?
Water on the floor around a freezer usually means the drain, not the door. What to check and when to stop using it.
Troubleshooting · 5 min read
Why is my aircon not cooling?
The eight most common reasons an air conditioner runs but does not cool, what you can check yourself, and what needs a technician.
Heat Pumps · 5 min read
Heat pump troubleshooting: no hot water and other faults
Why a heat pump stops delivering hot water, what you can check, and what needs a refrigeration technician.
Heat Pumps · 4 min read
When should a heat pump be serviced?
Service intervals for domestic and commercial heat pumps, and the specific checks that protect efficiency.
Solar · 6 min read
Solar battery sizing: how much storage do you actually need?
How to size battery storage around the loads you want to keep running, instead of buying a package and hoping.
Commercial · 6 min read
Commercial refrigeration maintenance: what a schedule should include
How to build a maintenance schedule that actually prevents downtime, with the checks and records that matter.
Refrigeration · 5 min read
How to maintain a cold room
A practical quarterly maintenance routine for cold rooms in restaurants, butcheries and supermarkets.
Solar · 6 min read
Common solar inverter faults and what they mean
Overload shutdowns, communication errors, fan failures and string voltage loss — how solar faults are diagnosed.
Costs · 6 min read
How much does aircon repair cost in Gauteng?
What actually drives the price of an air conditioner repair, from call-out fees to gas, PCBs and compressors — and when replacement makes more sense.
Troubleshooting · 5 min read
Why is my fridge not cold but the freezer works?
This specific symptom points to airflow or defrost problems far more often than to gas loss. Here is how the fault is diagnosed.
Commercial · 5 min read
Restaurant refrigeration maintenance checklist
A practical checklist for restaurant owners and kitchen managers to protect stock and pass inspections.