About WhatSizeMiniSplit.com

About WhatSizeMiniSplit.com

WhatSizeMiniSplit.com is an independent, free educational resource that helps homeowners understand how mini-split sizing works. Our calculators and guides produce room-by-room BTU estimates based on common inputs - helping you arrive at a reasonable starting point before speaking with a licensed HVAC professional.

What This Site Is

This site provides:

• Free BTU and capacity estimates for mini-split sizing
• Plain-language explanations of how sizing factors like square footage, climate, insulation, and window area affect heat load
• Guidance on what assumptions these estimates are based on and when a proper professional load calculation is necessary

Estimates Only

All figures produced by this site are estimates only. They are not a substitute for a proper Manual J load calculation performed by a licensed HVAC professional.

What This Site Is Not

WhatSizeMiniSplit.com is not an HVAC contractor, installer, manufacturer, or equipment retailer. We do not match homeowners with contractors, provide project quotes, schedule installations, or offer licensed HVAC or electrical advice. We have no financial relationship with any HVAC brand or installer.

Who We Are

By WhatSizeMiniSplit Editorial Team

Edited by Sheikh A. Islam

Our editorial team researches mini-split sizing principles using published industry references and publicly available documentation. Content is reviewed for accuracy and updated as standards and equipment change.

Contact

For website questions, content corrections, or feedback, please see the contact section below.