Terms of use
What this site is
Compare HVAC Software provides information, tools and data. Figures are researched, sourced inline, and dated; tools show their assumptions. Compare HVAC Software is an information site. It is not affiliated with, endorsed by or connected to the EPA or any software vendor named here, and nothing on it is legal, regulatory or contractual advice. The regulatory summaries here quote EPA guidance read on the date shown and are a starting point: the detailed recordkeeping provisions live in 40 CFR Part 82 Subpart F and compliance is the appliance owner's duty, not the software's. We take no commission from any vendor and carry no paid placements.
What this site is not
Nothing here is financial, legal, tax, medical or other regulated advice, and no tool output is a quote, an offer, or a recommendation to act. Results are estimates from the stated assumptions; confirm anything that matters with a qualified, authorised professional before acting. Where we introduce you to a provider, we act as an introducer only: we do not advise on, arrange, or recommend between providers, and we never handle client money.
Accuracy and liability
We work to keep every figure current (each table shows its last-updated date) but make no warranty that content is error-free. To the extent permitted by law, Ellul Solutions Ltd accepts no liability for loss arising from reliance on this site. Links to external sites are provided for sourcing; we are not responsible for their content.
Embedding and citation
You may cite this site's data with attribution (a link to the page cited) and may use the embeddable widget where offered, unmodified. Scraping that removes attribution, or republishing tables wholesale without a link, is not permitted.