--- title: How much can you save if you get rid of a hot-wire anemometer? description: Below are guidelines to calculate how much you can save if you replace your hot-wire anemometer with capacitive technology like Setra FLEX™ Conversion Kit. --- ** ** ** - Website Pages - Products [![Setra Systems Logo](https://www.setra.com/hubfs/setra-logo.svg "Setra Systems Logo")](https://www.setra.com/) ![drop-down-pressure](https://www.setra.com/hs-fs/hubfs/angle-arrow-pointing-to-right.png?width=15&name=angle-arrow-pointing-to-right.png) **[Pressure Sensors](https://www.setra.com/product/pressure)** [Differential Pressure Sensors](https://www.setra.com/product/pressure/differential) [Absolute Pressure Sensors](https://www.setra.com/product/pressure/absolute) [Barometric Pressure Sensors](https://www.setra.com/product/pressure/barometric) [Compound Pressure Sensors](https://www.setra.com/product/pressure/compound) [Gauge Pressure Sensors](https://www.setra.com/product/pressure/gauge) 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[Anemometers](https://www.setra.com/blog/problems-of-a-hotwire-anemometer) must be frequently cleaned to remain accurate, and if not maintained, they waste massive amounts of energy. Below are guidelines to calculate how much you can save if you replace your hot-wire anemometer with capacitive technology like [Setra's Hot-Wire to Setra FLEX™ Conversion Kit](https://www.setra.com/product/room-pressure-monitoring/hot-wire-replacement-kit). ## Cost Savings to Remove Hot-Wire For a free downloadable version of the savings calculator, click [**here**](https://www.setra.com/hot-wire-replacement-cost-savings). ### Monthly Cleaning of Wires (Debris) 1 hour per room X $40/hr labor = $40 per month, per room Note: Add in cost to bring down Operating or Patient Recovery room for 1 hour $__________ ### Cost of Air Mover Leaking CFM Through Hole in the Wall @2800 CFM required for ACH Vel thru hole = 60 fpm Hole = 0.259 ft³ 0.259 X 60 = 15.5 cfm per room $0.17 per CFM per month = $2.64 per room per month (electricity) AND (room additions not available due to fan curve) ### Cost of Alarm Thresholds Running Higher than Necessary (Debris on Wires) Typical hot-wires run at 0.03" WC alarm threshold. Setra's Hot-Wire to Setra FLEX™ Conversion Kit allows running at 0.005" WC alarm threshold. Based on typical fan curve: 0.03 - 0.005 = 0.025" WC improvement 0.025" WC improvement on fan curve = 9 CFM reduction available @ $0.17 per cfm per month = $1.53 savings per room, per month ### Monthly Savings for 30 Rooms ($22 + $2.64 + $1.53) X 30 = $785.00 per month Add revenue for keeping Operating or Patient Room open $_______ Add Revenue for Room Additions Available on Fan Curve $_______   ### Recent Posts ### Posts by Topic - [Critical Environments (184)](https://www.setra.com/blog/topic/critical-environments) - [HVAC/R (180)](https://www.setra.com/blog/topic/hvac-r) - [General Industrial (153)](https://www.setra.com/blog/topic/general-industrial) - [Building Automation (135)](https://www.setra.com/blog/topic/building-automation) - [General Industrial OEM (92)](https://www.setra.com/blog/topic/general-industrial-oem) - [Energy Management (85)](https://www.setra.com/blog/topic/energy-management) - [Test and Measurement (66)](https://www.setra.com/blog/topic/test-and-measurement) - 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