We're working on a small residence for a private school, and used eQuest for an initial model, with the intent to use OpenStudio for the final model submission in a few months. We have not submitted a model using OpenStudio before (and I'm really the only who has done any E+ work at our company).
The building has a number of features in it (VRF, DOAS, external enclosure for VRF compressors) which aren't well modeled in eQuest, and required a number of workarounds which to me seem at best, grossly inaccurate.
My question is how much variance should be expected between the two models? Does anyone have experience with comparing the two engines and have an idea about where differences should be expected?
Currently, the lighting, equipment, and DHW are fairly well in line, with some variances due to how the buildings were specified within each software. These are fairly easily explainable. Where the problems are arising are with the fan and pump energy, as well as heating and cooling energy.
Any insights anyone has with comparing these two software packages would be very helpful.
