Help & publication information
This is a reader publication, not a support desk or sales line. Here is where to start in the guides, how we keep them accurate, and who to call when a specific unit needs attention.
Start with the guides
These guides cover sizing, safe heating checks, and cold-weather performance. Each one links the primary sources behind it, so you can read the original material yourself:
- What size mini-split do you need? What really drives sizing, and the load-calculation questions to take to an installer.
- Mini-split not heating? Start with safe checks. The settings and airflow checks a homeowner can safely make, and where to stop.
- What cold weather changes for a heat pump. Capacity, defrost, and backup heat — without universal cut-off temperatures.
Equipment support and service
For a fault, a warranty question, or an installation on a specific unit, the people who can actually help are the manufacturer's support line for your model and a qualified local HVAC technician. MEHVAC Journal is an independent publication — not a manufacturer, contractor, or lead service — so we don't service equipment, book visits, or pass your details to anyone.
How we source and correct our guides
The guides are built from primary sources and checked against them. Our editorial policy explains how we use those sources, label manufacturer material, and mark where a homeowner should stop and call a professional, and the about page covers who publishes the work. When we find or confirm an error, we check it against the original material and update the guide.