Contact Us
Questions about our calculators? Found a bug? Want to request a new tool? We'd love to hear from you.
Send your questions, bug reports, or feature requests to:
We typically respond within 1-2 business days.
Common Topics
Please email us at [email protected] with the calculator name, your input values, expected vs actual output, and which standard you selected. Screenshots help us debug faster.
Great! Describe the tool you need, what engineering formula it should use, and your use case. We evaluate all suggestions and prioritize the most requested ones.
Check our Methodology page first — it documents the formulas and references for each calculator. If your question isn't answered there, email us with the calculator name.
For content partnerships, link exchanges, or integration suggestions, please email us with your proposal and site details.
Before You Contact
- ✅ Check the FAQs on each calculator page — common questions are answered inline.
- ✅ Review the Methodology — formula details and references are documented.
- ✅ Try a different standard — results vary between ASHRAE, GB, SHASE, EN, and NEC.
- ⚠️ These are preliminary estimates — always verify with a licensed professional for final designs.
⚠️ Urgent engineering support? Please consult a licensed HVAC or electrical professional in your area. This site provides preliminary estimates only and is not a substitute for professional engineering judgment.