Review on SimpleHVAC by Francisco Russell

The ease in which I can make changes without having any technical knowledge about my system has been very helpful when trying new ideas or correcting mistakes made by myself (or others).

It's not perfect yet - there are some things that could probably do with an update/improvement so far we're using this product as our main estimator at present time- no issues here! We've used several different products over many years now including Excel spreadsheets etc., however none have come close to providing us what they should provide i.e.- fast accurate data entry & management capabilities within one program like SHeM does currently!!