Updated 2026-09-15. Winner field: depends (this site does not rank a single winner).
Cool Calc and Elite Software Rhvac both appear on ACCA’s approved software list for residential Manual J work, but they sell different delivery and billing models. LoadCalcStack does not rank a winner.
Snapshot (published floors only)
| Dimension | Cool Calc | Elite Rhvac |
|---|---|---|
| Published floor | $50/user/mo | $599 permanent desktop / $239/year Online |
| Delivery | Web browser | Windows desktop + online |
| Manual J / D / S (vendor claim) | J, S, D on Pro card | ACCA Manual J 8th Ed Version 2 / Manual D / Manual S on product page |
| Pricing page style | Public cards on homepage | Public SKUs on product and order pages |
| ACCA list (as retrieved) | Cool Calc Manual J | Elite RHVAC |
Published 2026-09-15. See vendor profiles for sources and anything not confirmed.
Related
- Cool Calc profile
- Elite Software (Rhvac) profile
- Cool Calc vs Wrightsoft
- Wrightsoft vs Elite Software (Rhvac)
- What is Manual J / ACCA-approved software
Sources
- Cool Calc homepage — retrieved 2026-09-15
- Elite Software Rhvac product page — retrieved 2026-09-15
- Rhvac order options — retrieved 2026-09-15
- ACCA approved software — retrieved 2026-09-15