Who it's for
The basics are written so a brand-new tech can follow along, with pro tips boxed out for the people who've been doing this for years.
Learn what every part does before you're standing in front of it on a call.
Testing procedures, charging methods, and multi-zone details you can use on the job.
Sizing rules, warranty tips, and how to sell the right system and the maintenance plan.
Clean your own unit, understand what's wrong, and know what to ask your installer.
What's inside
The book follows the same order as the course: understand it, maintain it, fix it, size it, install it. Open any part to see what it covers.
How they workComponents, features, and operating modes
- Every major component, indoor and outdoor, and how they work together
- Inverter compressors, EEVs, sensors, and boards in plain language
- Cooling, heating, dry, and fan modes
- The types: wall mount, ceiling cassette, floor console, ducted, and slim ducted
Maintenance and cleaningKeep units running and stop callbacks
- The annual deep clean with a wash bag and foaming coil cleaner
- Ceiling cassette service, including condensate pumps
- Clearing drains the right way
- Protecting coils from corrosion, and how to tell if a site needs it
- Selling the maintenance plan
RepairFind the problem, test the part, fix it right
- How to read any brand's fault codes and the common fault families
- Part-by-part testing with a meter, with real photos
- Charging by weight, with superheat as your check
- The cold-weather trick for adding refrigerant in heating mode
- Refrigerant handling and EPA 608 basics
SizingPick the right unit for the space
- Square-foot rules of thumb and when to run a full load calc
- Why oversizing a small room causes problems
- Cold-climate units and checking real heating capacity
- 120V vs 240V options
- Warranties and how to use them to win the job
InstallationSingle-zone and multi-zone, start to finish
- Placement and clearances, with illustrations
- Line-set sizes, flares, and flare torque specs
- Brazing with nitrogen, pressure testing, and pulling a vacuum
- Drain pitch, power, and wiring
- Rough-in boxes for new construction and quick-connect DIY systems
- Multi-zone: shared-port, manifold, and VRF systems, plus adding charge for line length
Pressure-temperature charts, efficiency ratings, safety listings, and a glossary of abbreviations.
Test yourself on every part of the book, with a full answer key and explanations.
A discount code for the AC Tool Pro app, plus partner discounts on tools and equipment.
Components, each laid out the same way
The field manual covers 30 indoor and outdoor parts. Every one gets the same four answers, so you always know where to look.
- What it does and how it worksSo you understand the part, not just the symptom.
- Common failure symptomsWhat you'll see or hear when it goes bad.
- Tools to check itThe meter or gauge you need before you start.
- How to test itStep by step, with what a good reading looks like.
Look inside
Real pages from the book. Full color, real photos, and diagrams on every topic.
Watch me on YouTube
Real service calls, installs, and how-tos. If you like learning by watching, start with these.
Want the video version?
The full Mini Split Training course follows the same order as the book, with videos for every part, quizzes, and a certificate when you finish. All-Access members get the digital edition of this book included.
minisplittraining.comFree mini split cleaning checklist
What to clean every month, every season, and once a year, plus the warning signs that mean it's time to call a pro. Free and printable.
Questions
Is it written for one brand?
No. Everything is written to apply across brands. Where a procedure varies by manufacturer, the book tells you to confirm it on that unit's service data.
Does it list error codes for my unit?
Codes change from brand to brand and model to model, so the book teaches you how to read any unit's codes and what each type of fault means. For live code lookups, use the AC Tool Pro app.
I'm brand new. Will I be able to follow it?
Yes. It starts with how mini splits work and builds from there. The deeper pro material is boxed out so it doesn't get in your way.
Is there a digital version?
The digital edition is included with All-Access membership at minisplittraining.com, along with the full video course.
Where do I buy it?
The paperback is sold on Amazon. Use the button on this page to go straight to it.