Mini-Split Heating Capacity at 5°F: What the Spec Sheets Actually Show
A 12,000 BTU mini-split doesn't make 12,000 BTU of heat on a 5°F night. Here's what MRCOOL's own performance tables show, size by size, and how to plan for it.
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BTU sizing math, sourced spec comparisons, and cold-climate performance, newest first.
MRCOOL DIY 4th Gen vs Pioneer Diamante Pro vs Senville AURA: 12K Spec Comparison
Three popular 12,000 BTU mini-splits compared from their official spec sheets: efficiency, cold-weather ratings, voltage, price, and which one is actually DIY.
What Size Mini-Split Do I Need? BTU by Square Foot and Climate Zone
ENERGY STAR's BTU-per-square-foot chart for cooling, a climate-zone rule of thumb for heating, worked examples, and why the 5°F number matters.