What HVACLoadCalc is for

Room-by-room HVAC sizing for DIY mini-split installs.

Not ACCA Manual J. Oversizing is the #1 DIY mistake; we say so.

This map lists pages that exist. It is not a keyword dump and it does not treat every article as its own niche. The calculator (or the pack) is the hub. Guides sit under one pillar each.

Room BTU

20–30 BTU/sq ft, then the four knobs.

• HVAC load calculator — Room BTU, mini-split, duct CFM, baseboard tabs.
• BTU room chart — Printable 9k/12k/18k/24k heads.
• BTU per square foot — The rule and when it lies.

Mini-split heads

Bedrooms want 9k. Sale 18ks short-cycle.

• Mini-split by room — Head size vs real rooms.

Whole-home size

A house is not one giant bedroom.

• AC for 1,000 sq ft — Worked small-house size.

Distribution

Air and electric heat after the load is known.

• Duct CFM chart — BTU ÷ (ΔT × 1.08).
• Baseboard watts — 7–10 W/sq ft, 120 vs 240 V.

Sisters

Adjacent math lives next door, not here. GeneratorSizer