For decades, farmers have relied on vertical pedestals to keep grain cool. They work, but they can be a nuisance to work around with a loader, and managing “top pipes” and trailing cables is a chore nobody enjoys.
Enter the Evans & Pearce Underflow system. It takes everything that works about the industry-standard Polycool and Metalcool pedestals and moves the “mess” underground.
No more “Top Pipe” tangles
In a standard system, your fans sit on top of the pedestals, connected by pipes that are vulnerable to damage during filling. With the Underflow system, the fans are positioned outside the store wall. They connect to the pedestals via ducts situated below the floor. This means:
- Easier filling: no top pipes to protect or avoid with the grain thrower.
- Cleaner workspace: no trailing electrical cables across the top of your grain.
- Better safety: you don’t have to climb over grain heaps to check or move fans.
Expelling heat where it belongs
Traditional fans often exhaust warm, moist air back into the headspace of the building. If the building isn’t perfectly ventilated, that moisture can condense and drip back onto your crop. Because Underflow fans sit outside the building, 100% of the warm air is expelled outdoors immediately.
Maximum security during filling
One of the biggest risks with vertical pedestals is them being knocked over or shifted as the grain piles up, especially in stores filled by overhead conveyors. The Underflow system secures the pedestal base to the floor duct, making it significantly more stable and “tread-safe” than freestanding units.
Is it right for your store?
- Best for: new builds or major floor renovations
- Compatibility: works with Polycool (plastic) or Metalcool (steel) pedestals
- Storage depth: suitable for depths from 3m up to 9m (using Maxi bases)
- Fan options: optimised for PV250 or the energy-efficient EVO II fans
- Space efficiency: pedestals can be spaced at “Storage Depth + 50-100%” depending on height
All of the advantages of pedestal ventilation with none of disadvantages
Building a new grain store or upgrading an existing one is a massive investment, and the ventilation system you choose is the difference between a high-value harvest and a costly spoilage headache.
If you are looking for a system that combines the effectiveness of pedestal cooling with the cleanliness of a flat floor, the Evans & Pearce Underflow system is likely on your radar. Get in touch with our expert team to discuss your requirements today.
