Fault Detection Cost Calculator
FDD system cost and energy savings from fault correction.
Inputs
Results
First-year total cost ($)
$20,800
Net annual benefit ($)
$55,260
Simple payback (years)
0.4
Implementation cost ($)$14,800
Annual software ($)$1,000
Energy savings ($/yr)$28,000
Maintenance savings ($/yr)$12,000
Total savings ($/yr)$57,000
5-year ROI (%)927
Est. faults detected/yr170
How to Use This Calculator
- Enter Total BAS points, Number of AHUs, and Number of VAV boxes.
- Set Annual HVAC energy ($), Annual maintenance ($), and Building Age.
- Adjust New (0-5 years), Mid-age (5-15 years) as needed.
- Review First-year total cost ($) ($), Net annual benefit ($) ($), and Simple payback (years).
- Use Implementation cost ($) ($) and Annual software ($) ($) to inform your decision.
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