High-Speed Door Savings Calculator
Replacing a slow sectional door or shutter with a high-speed door cuts the time the opening stays open — so far less conditioned air escapes. Estimate the annual ₹ saving and payback. Indicative engineering estimate — get a vendor spec.
Your opening
Large ΔT (−18 to +35°C) and poor refrigeration COP — every open second is expensive. Open-time per cycle = leaf travel (up + down) + a 6s pass pause. Slow door stays open 41s vs 11.8s for the high-speed door — 29.2s saved per cycle. Indicative single-knob "energy intensity" model; real loss depends on ΔT, RH, infiltration velocity and refrigeration/AC COP.
Estimated annual saving (incl. GST)
₹0
Payback in 6.7 months · 30,319 kWh/yr saved
Annual ₹ saving
₹3,21,985
Payback
6.7 months
cost ÷ monthly saving
Door-open hrs saved
729 hr/yr
less open time
Open-time per cycle (seconds) — slow vs high-speed
Less open time = less air exchange. Indicative — confirm with a vendor spec.
Cumulative saving vs door cost
Where the rising cumulative-saving line crosses the flat door-cost line is your break-even — about 6.7 months for these inputs.
Spec the right high-speed door
DesignAI helps you size the door, pick the right speed and insulation, and decide whether a PVC strip-curtain backup pays off — then sense-checks the ROI.
Assumptions & caveats
- Saving comes from reduced open-time per cycle (less air exchange). Open-time = leaf travel up + down at the chosen speed, plus a fixed 6s pause while goods pass (300 working days/year).
- Energy loss uses a single indicative "energy intensity" per environment that bundles ΔT, relative humidity, infiltration velocity and refrigeration/AC COP into one number. Real loss is non-linear — treat the ₹ figure as a planning estimate, not a measurement.
- Excludes maintenance/AMC (high-speed doors need more frequent service than manual doors), spares, downtime/productivity gains, draught-comfort and product-quality benefits — so real ROI is often better than shown.
- Indicative only — these doors are project-engineered. Get a vendor spec and an energy audit before committing. Prices and tariffs vary by city, opening size, insulation class and vendor; 18% GST applies on the door and (optionally toggled here) on energy.
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