Oven exhaust volumes are typically chosen to suit the purge volume requirements to allow air changes in a reasonable amount of time, which leaves the oven in an over ventilated condition during normal operation. Modern energy efficient ovens typically include a Variable Frequency Drive (VFD) to allow distinct operating modes for purge and operational exhaust volumes. The energy savings available by incorporating a VFD into an oven exhaust control system can be an attractive retrofit for older ovens that are still operating well.

Bake and Dry Off Oven Exhaust Reduction Calculator 1

Use this calculator to get a general idea of the energy and cost savings associated with installing a VFD to reduce exhaust losses on your process oven.2 

Production Hours [hrs/yr]

By installing a VFD to run near the minimum exhaust during operation, potential savings are:

For a more accurate savings quote or to apply for our financial incentives:

Contact your Enbridge Gas Energy Solutions Consultant or email energyservices@enbridge.com

 1. The calculated estimated savings are estimates only and not guaranteed by Enbridge Gas. The accuracy of this calculation is dependent upon the accuracy of the variables entered into the calculator and the relevancy of the assumptions used in the calculation to your specific facility (see assumptions below for details).  For a more accurate savings estimate contact an Enbridge Gas Energy Solutions Consultant.

 3. Assumptions: Assumes NON-solvent based powders or paints, minimum exhaust rate needs to be achieved, building is located in the GTA, typical heating system efficiency and natural gas costs are estimated at $0.25/m3.

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