Editorial Policy

Who writes HVACBase

HVACBase is researched and written by Marko Visic, BSc Physics (Faculty of Mathematics and Physics, University of Ljubljana). He is the site's sole author and editor. He is a physicist especially interested in thermodynamics and heat transfer, not a licensed HVAC contractor, and the site reflects that: clear, physics-grounded explanation built on verified data from primary sources and published standards.

How pages are written

Every figure is traced to its primary source and linked on the page, every calculation is recomputed, and anything that can't be verified is removed or labeled as an assumption. Marko reviews and edits the pages, starting with the most-read guides, and corrects errors as soon as they're reported.

Where the numbers come from

Figures come from primary sources: U.S. Department of Energy efficiency standards and guidance, the U.S. Energy Information Administration, ENERGY STAR, the EPA, the IRS, and the codes and standards that govern HVAC and electrical work, such as the National Electrical Code and ASHRAE standards. Calculators use the same published formulas and data the guides cite. Cost ranges are typical contractor pricing and are labeled as estimates.

What we don't do

We do not run a testing laboratory, and we never claim first-hand testing or measurements we didn't perform. We don't name or recommend brands, accept payment for coverage, or use affiliate links.

The site may display third-party programmatic advertisements; when they appear, they are served and placed by ad networks, not by us. Advertising does not influence what we cover or what the pages say. Data processing associated with advertising is described in the privacy policy.

Corrections

Specifications change as manufacturers update equipment and as standards evolve (for example, the SEER → SEER2 transition). If you find an error, email info@hvacbase.org and we'll verify against the primary source and correct it.

Last updated: October 7, 2026. · Author: Marko Visic on LinkedIn.