1. Can'r add sq ft of irregular rooms, had to measure square feet, take square root and enter that as length and width.
2. Can't enter outdoor temp higher than 30f.Good app for heating and cooling technician to use in the field.
3. Should allow direct entry of room area, not just length and width.
4. It is meant for a general user with no background to be able to use it with ease.
5. I like that I can customize the report to my business to give a copy to my end user.
6. I have tried a few other heatloss Apps and this one is very easy to use.
7. Helps sell the job showing I put in the extra work.
8. Highly recommend.Can't add over 5 rooms, demands payment.
9. Time adding 5 wasted.