What temperature should a banana ripening room run at?

Ripening is typically initiated around +16 to +18 °C pulp temperature and brought down toward +14 to +16 °C as respiration peaks, with 90–95 % RH. Green holding and transport stay near +13 to +14 °C. Final setpoints follow your ripening protocol and variety.

Why must bananas never be stored below 13 °C?

Below roughly 13 °C bananas suffer chilling injury: the peel dulls and greys, ripening becomes uneven and the fruit is downgraded. This is the single most common cold chain failure for the commodity.

How long can bananas be stored?

Green bananas hold for roughly two to four weeks at +13 to +14 °C depending on maturity at harvest and transit conditions. Once ripening is initiated the useful window is days, not weeks.

How many ripening rooms do I need?

It is a throughput calculation: pallets per cycle, cycle length (typically four to seven days) and weekly market volume. The size calculator gives a planning-level room volume; the cycle count sets how many rooms.

Can one plant serve both ripening rooms and a chilled packhouse?

Yes, and it is usually the right answer — but only if the plant is sized for simultaneous peak respiration load and packhouse pull-down, with separate temperature control per room.

What does a ripening block cost?

Cost is driven by room count, insulation, controls, ethylene and ventilation systems and the refrigeration plant rather than floor area alone. Send one brief through the RFQ builder to get comparable quotes from qualified suppliers.

Banana & horticulture

Banana ripening room temperature and horticulture cold storage requirements

Bananas are the clearest example of a commodity where the refrigeration specification is set by physiology rather than by volume. Below roughly 13 °C fruit suffers chilling injury, while ripening rooms must add and remove heat on demand as respiration peaks. Sizing a banana facility like a general chilled store almost always produces the wrong plant.

Request a quote for a banana & horticulture cold store

The brief opens pre-filled with the commodity, the target temperature (+13 to +14 °C green holding) and the required storage life (Green bananas 2–4 weeks at +13 to +14 °C). Adjust the numbers and send one brief to qualified suppliers.

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Condition	Indicative temperature	Humidity	Engineering note
Green transport / holding	+13 to +14 °C	85–95 % RH	Below ~13 °C causes chilling injury and dull, grey peel — a hard lower limit.
Ripening room (initiation)	+16 to +18 °C pulp	90–95 % RH	Ethylene dosing stage; room must heat as well as cool.
Ripening room (peak respiration)	+14 to +16 °C pulp	90–95 % RH	Respiration heat can exceed several times the envelope load.
Ripe dispatch / colour stage 5–6	+13 to +15 °C	85–90 % RH	Short buffer only; storage life at this stage is measured in days.
Mixed tropical horticulture (mango, avocado, pineapple)	+8 to +13 °C	85–95 % RH	Species-specific; several tropicals are also chilling-sensitive.

Values are indicative planning ranges used for early-stage refrigeration sizing and procurement. They do not replace product-specific food-safety, pharmaceutical, regulatory or customer requirements, which take precedence in every case. Confirm final conditions with your quality function and a qualified refrigeration engineer.

Refrigeration engineering considerations

Respiration heat, not envelope load

In a ripening room the dominant load is the heat the fruit itself generates during the respiration peak. Sizing on wall, floor and roof gains alone under-specifies the plant by a wide margin.

Heating and cooling in the same room

Ripening rooms need controlled heat-up at initiation and rapid pull-down at peak. That means a reversible or supplementary heating capability, tight setpoint control and pulp-probe based control rather than air-temperature control alone.

Airflow and pressurised ripening

Modern rooms use pressurised or reverse-airflow pallet configurations so air passes through the boxes rather than around them. Box vent alignment and curtain sealing determine whether the room ripens evenly.

Ethylene dosing and ventilation

Ethylene is dosed at controlled concentration, and CO2 must be ventilated out during the cycle. Fresh-air changes are a refrigeration load and belong in the calculation, not an afterthought.

Humidity control

Low humidity causes crown drying and weight loss on fruit sold by weight. Coil temperature difference and evaporator surface area are the practical levers.

Packhouse integration

Most African horticulture projects need a packhouse chilled area, a ripening block and a dispatch buffer with different setpoints. Splitting these into separate rooms is usually cheaper to run than one compromise room.

From temperature to system requirement

1. Confirm the storage condition for your product and market.
2. Size the room — cold room size calculator.
3. Calculate the refrigeration duty — refrigeration load calculator.
4. Check operating cost — electricity cost calculator.
5. Send one brief to qualified suppliers — build an RFQ.

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