We don’t deliver everywhere with refrigerated trucks—economics won’t allow it. But professional dry ice packaging extends frozen delivery beyond our routes.
Best Practices
Best Practices
Best Practices
The Ice Pack Delusion: Why Cardboard Boxes Can’t Replace Refrigeration
Ice pack frozen delivery makes 3× more profit per delivery than professional refrigeration—but collapses in 3 years. Here’s why margins don’t matter.
Technical Articles
The “Smart Fleet” Delusion: Why Telematics Without Physics Is Just a Fancy Logbook
Your “smart fleet” is just a thermometer with WiFi. Real intelligence requires physics-based predictive analytics, not reactive alarms. R60k/year wasted.
Technical Articles
Radiating Upward: The Thermal Load Nobody Calculated (And Why Your Floor Is The Weakest Link)
Refrigerated transport specifications obsess over solar radiation from above while completely ignoring the 70°C heat source below. South African trucks operate on pavement surfaces 20-30°C hotter than ambient air, yet floor insulation is consistently half that of roofs. The physics is simple, but the industry won’t calculate the cost.
Technical Articles
The Constant-Speed Curse: Why Variable-Speed DC Compressors Could Slash Your Duty Cycle by 40%—But Direct-Drive Mounting Is Holding Them Hostage
Your fixed-speed compressor wastes 40% of its energy on crude thermostat control. Variable-speed DC systems save R12,500/year. Here’s why you can’t buy one.
Technical Articles
The Defrost Cycle Dictatorship: How Timed Defrosts Waste R25,000 Per Vehicle Per Year
60-year-old timer-based defrost control designed for long-haul trucks wastes R25,000 annually on courier operations. Demand-based pressure sensing solves this in 4 months.
Technical Articles
Your Truck is a 4-Ton Brick Fighting Wind at 100 km/h: The Aerodynamic Design Revolution That Could Save You R150,000 Per Vehicle Over Five Years (But Nobody’s Building It)
4-ton refrigerated trucks waste R20,350/year fighting aerodynamic drag. Composite bodies cut fuel costs 39% while solving the flat wall problem nobody addresses.
Technical Articles
The Aerodynamic Cost of Larger Condensers: The Fairing Effect Nobody Calculated
Everyone assumes larger condensers create more drag. They’re wrong. Behind every courier truck cab sits a 1.4-2.0m² flat loadbox wall creating massive drag (C_d ~1.15). Small condensers cover only 20% of it. Large horizontal condensers covering 70-90% act as integrated fairings, SAVING R2,751-R3,528/year in aerodynamic drag—while providing 50-100% more cooling capacity. The loadbox wall is the problem. Large condensers are the solution. Net benefit: R12,751-R15,528/year (aerodynamics + thermodynamics). Payback: 7-13 months.
Technical Articles
The Ram Air Misnomer: Why Small Form Factor Units Waste Your Mounting Space
Small form factor condensers waste 60% of your mounting space. Ram air can’t save undersized coils at courier speeds. Use the space you paid for.
Technical Articles
R448A vs R404a: The Refrigerant Upgrade That Actually Makes Sense for Altitude (Unlike the European Solutions Nobody Asked For)
R448A delivers 11% more capacity than R404a at altitude with 65% lower GWP and 2-3 year payback. But the industry pushes R290 and CO₂ that perform worse in South African conditions.