SoftwareHvac.com is the web presence of Hands Down Software, a firm composed of engineering and software development professionals offering psychrometric and HVAC engineering software. Their products address areas including psychrometric property algorithms, refrigeration cycle modeling, air and acoustical modeling, energy analysis, and automated CAD/CNC design systems. The company serves HVAC engineers and related industry professionals, drawing on staff experience spanning over three decades.
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Authority
—/100
Safety
82/100
0 of 2 safety checks passed (Sep 8, 2026).
AboutUs has not vetted this site. 2 of 2 automated safety checks did not pass. Everything below is what we could measure automatically. Anything you do on the site — paying, sharing personal details, downloading — is between you and the site, not AboutUs.
Current facts
What AboutUs observed today, plus dated entries that carry the year they were recorded. These are measurements, not an endorsement of the site.
2016 record
Domain registered Dec 11, 2003 — 22 years old.
2026 zone
Not delegated in the TLD zone as of Aug 18, 2026 — this domain no longer resolves.
Authority: not enough signals yetSome caution flags
Why we're not scoring this yet
We withhold an authority number until independent evidence (global rank, link-graph presence) has accrued. The facts we do have about this site are shown below — we'd rather say “not enough signals yet” than invent a low score.
Safety evidence
No valid HTTPS today
No MX and no DMARC (mild)
Site history
Dated record — historical facts always carry their date.