The choice between ductless and ducted ESP affects construction cost, energy consumption, architectural freedom, and long-term flexibility. This article provides the structured comparison and decision framework.
| Parameter | Specification |
|---|---|
| Ductless ESP | Pros: no roof penetration; lower construction cost; kitchen anywhere; reconfigurable; recirculated conditioned air. Cons: needs ceiling height; heat load in kitchen; carbon filter consumable |
| Ducted ESP | Pros: removes heat; handles any cooking; no recirculated air concerns; proven technology. Cons: roof penetration; high duct cost ($200-500/m); fixed location; duct cleaning; make-up air energy |
| Decision Factors | Building type (existing = ductless easier); Lease (rented = ductless for end-of-lease removal); Ceiling height (ductless needs 300mm above hood); Cooking type (light/medium = ductless; heavy = ducted); Climate (hot = ducted for heat removal) |
| Hybrid Approach | Ductless ESP with small heat-only duct; Ductless plus ceiling heat recovery; Best of both: purification + heat management |
Application Scenarios
- Mall restaurant tenant (Dubai): Selected Light-duty Series ductless: mall charged $50,000 for roof rights; 5-year lease meant ductwork not recoverable. Total saving: $85,000. Invested in higher-quality equipment and design.
- Historic building (Paris): Haussmann building prohibited roof penetration and external ductwork. Ductless ESP was only viable option. Heritage authority approved. Architect: the technology literally enabled the business.
- Chain architecture decision: Chain developing standard kitchen design made ductless the default, ducted optional for specific conditions. Standardized ductless reduced construction time by 3 weeks and cost by $40,000/location across 30 locations.
- 15-year lifecycle model: MEP firm analysis: Ducted $385,000 total vs Ductless $265,000 total for a 200-seat restaurant. Net advantage ductless: $120,000 over 15 years. Verified by 5 years operating data from 10 restaurants.
