Checked Sep 26, 2026
How much does HVAC-Calc (HVAC Computer Systems) cost?
HVAC-Calc (HVAC Computer Systems) doesn't publish a US price. Windows Manual J heat loss / heat gain load calculation software for residential and commercial HVAC contractors.
Prices are as published by HVAC-Calc (HVAC Computer Systems) on Sep 26, 2026. Check the linked source before buying.
Published rates
Plans and add-ons
Plans
| Plan | Price | Billing |
|---|---|---|
| HVAC-Calc Residential 4.0.70a$389 one-time | Quote | Check vendor |
| HVAC-Calc Commercial 4.0.70a$389 one-time | Quote | Check vendor |
| Residential + Commercial$678 one-time | Quote | Check vendor |
| Home Owner License$49; expires in 2 months; non-profit use only | Quote | Check vendor |
Add-ons
| Add-on | Price |
|---|---|
| Update Program(s) (required for Windows 11)$99 one-time | Not published |
Pricing source: hvaccomputer.com ↗, checked Sep 26, 2026.
Beyond the plan price
Terms worth checking
- Setup
- Not published · none
- Contract & cancellation
- one-time purchase · Renewal: no · n/a
- Data export
- yes · Desktop files stored locally
Source notes
What the headline misses
Each point is tied to a dated statement on HVAC-Calc (HVAC Computer Systems)'s site. Open the source to read the full context.
- Running the software on Windows 11 requires a separate update purchase, listed at $99.
“Update Program(s) (required for Windows 11)”
682ce5-3.myshopify.com · Sep 26, 2026 ↗ - The low-cost homeowner license expires after two months and is for non-profit use only.
“Expires in 2 months Non-profit use only No support (none needed!)”
hvaccomputer.com · Sep 26, 2026 ↗
Who it sells to
Prices and quotes are as published on HVAC-Calc (HVAC Computer Systems)'s own pages on the date shown, before tax and payment processing. Vendors change prices and terms; check theirs before you buy.
The website-cost question
Which part of HVAC-Calc (HVAC Computer Systems) do you actually need?
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