Editorial

Editorial Team — Lockwell HVAC

Who writes our content

Our editorial team works alongside licensed Birmingham HVAC technicians to ensure every page on this site reflects current Alabama code, current best practices, and the climate realities of central Alabama. The people writing about heat pumps and short-cycling compressors are people who have stood on a Gardendale roof in August and pulled a pressure reading on a unit that did not want to come back online.

We do not publish what a content mill scraped off another HVAC site. Our pages start with field notes — the failures we actually see across Jefferson and Shelby County, the equipment we actually pull, and the diagnoses we actually charge for. Then the editorial team checks every claim against ACCA Manual J, current Department of Energy guidance, the U.S. EPA Section 608 rule, and the Alabama Board of Heating, Air Conditioning, and Refrigeration Contractors' current code.

That is the whole standard. Real Birmingham HVAC work, written down honestly, checked against the authorities that actually matter in this trade.

Our editorial standards

• Citation policy. Every code reference, climate statistic, and equipment standard cites a primary source — ACCA, ASHRAE, U.S. DOE, U.S. EPA, NIST, or the Alabama HACR Board.
• Correction policy. If we publish something wrong, we correct it and stamp the page with the correction date. Readers can email editorial@lockwellhvac.com with corrections.
• No pricing claims. We do not publish flat-rate prices online. Every job gets a written estimate from a licensed technician on site, after the diagnosis.
• No guarantees. We do not promise “same-day,” “free service call,” or response-time windows in writing. The work and the timeline get quoted on the call.
• AI disclosure. Some pages are AI-assisted in drafting. A licensed Alabama HVAC technician reviews every page for accuracy, code, and tone before it ships.

How we research

Source hierarchy, in order of authority:

1. Manufacturer service manuals — Carrier, Trane, Lennox, Goodman, Rheem, Mitsubishi, Daikin. Wire diagrams, capacities, charge tables.
2. ACCA standards — Manual J load calc, Manual D duct design, Manual S equipment selection, Manual T airflow.
3. U.S. Department of Energy — efficiency ratings (SEER2, HSPF2, AFUE), heating and cooling guidance for the southeast climate zone.
4. U.S. EPA — Section 608 refrigerant rule, ENERGY STAR program criteria, indoor air quality.
5. NIST + NOAA climate data — Birmingham AL design temperatures and humidity ranges, heating and cooling degree days.
6. Alabama HACR Board — current contractor licensing rules and code references for Alabama HVAC work.
7. ASHRAE — duct design and indoor environment standards (ASHRAE 62.2, 90.2, position documents on refrigerants).

When a topic is contested in the trade, we name the disagreement and present the contested view from each authority — instead of pretending there is one settled answer.