# Cool Calc vs Wrightsoft

Side-by-side look at published pricing, platform, and ACCA Manual J positioning for Cool Calc and Wrightsoft RSU. No ranked winner.

- Canonical: https://www.loadcalcstack.com/compare/cool-calc-vs-wrightsoft
- Vendors: cool-calc, wrightsoft
- Winner field: depends (this site does not rank a single winner)
- Updated: 2026-09-15
- Author: LoadCalcStack editorial team

Cool Calc and Wrightsoft both appear on ACCA's approved software list for residential Manual J work, but they sell different delivery models. LoadCalcStack does not rank a winner.

> Verified fact: Cool Calc homepage (retrieved 2026-09-15) lists Unlimited Pro at $50/user/mo for Manual J, S, and D. Wrightsoft RSU Residential Package (USA) lists $900/year on its product page (retrieved 2026-09-15).

> Verified fact: Cool Calc markets browser access on modern devices. Wrightsoft's residential package page describes a Windows-based Right-Suite Universal residential package.

> Verified fact: ACCA's approved software page (retrieved 2026-09-15) lists Cool Calc Manual J and Wrightsoft Right-J8 under full residential load calculation. Confirm the live ACCA list before relying on approval status.

> Editorial judgment: Choose Cool Calc when you want a published monthly web floor and device flexibility. Choose Wrightsoft when you want a full Windows residential design/permitting package and can budget ~$900/year. Normalize for users, modules, and training time before treating either number as "cheaper."

## Snapshot (published floors only)

| Dimension | Cool Calc | Wrightsoft RSU Residential (USA) |
| --- | --- | --- |
| Published floor | $50/user/mo | $900/year |
| Delivery | Web browser | Windows desktop package |
| Manual J / D / S (vendor claim) | J, S, D on Pro card | Right-J (ACCA), Right-D (ACCA) listed among modules |
| Pricing page style | Public cards on homepage | Public yearly price on product page |
| ACCA list (as retrieved) | Cool Calc Manual J | Wrightsoft Right-J8 |

Published 2026-09-15. See vendor profiles for sources and anything not confirmed.

## Related

- [Cool Calc profile](/vendors/cool-calc)
- [Wrightsoft profile](/vendors/wrightsoft)
- [Wrightsoft vs Elite Software (Rhvac)](/compare/wrightsoft-vs-elite-software)
- [What is Manual J / ACCA-approved software](/guides/what-is-manual-j-acca-approved-software)