HVAC articles

Free HVAC knowledge from the Manuall Trade Library: diagnostic trees, SOPs, estimating and pricing guidance, and the business side of running a shop. No account needed; read it, share it, put it to work.

617 articles

Reference Equipment

Attic Moisture + Ventilation Diagnosis Reference

HVAC · Roofing

Reference Equipment

Attic Conversion Considerations Reference

HVAC · Electrical · Plumbing · Roofing

Reference Equipment

Asbestos + Lead Paint Safety Reference

HVAC · Plumbing · Electrical · Painting · Roofing · Garage Door

Reference Process

Airflow Measurement and Balancing Reference

HVAC

Reference Equipment

Common Adhesive Tapes Reference

HVAC · Plumbing · Electrical · Painting · Roofing · Garage Door

Reference Equipment

Adhesive Selection by Material Reference

HVAC · Plumbing · Electrical · Roofing · Painting · Garage Door · Appliance Repair

Reference Safety

Acid + Caustic Chemical Handling Reference

Plumbing · HVAC · Pool Service · Carpet Cleaning · Pest Control

How-to Guide Process

Customer Testimonials + Case Studies

HVAC · Plumbing · Electrical · Cleaning · Lawn Care · Pool Service · Pest Control · Garage Door · Appliance Repair · Carpet Cleaning

How-to Guide Process

Sales Coaching Program (Owner + Manager)

HVAC · Plumbing · Electrical · Roofing · Solar

How-to Guide Process

Reading Construction Plans + Specifications

HVAC · Plumbing · Electrical · Roofing · Painting

How-to Guide Process

Sales Objection Handling (Deep Reference)

HVAC · Plumbing · Electrical · Roofing · Solar

How-to Guide Process

Membership Sales Conversation + Conversion

HVAC · Plumbing · Electrical · Pool Service · Pest Control · Lawn Care · Garage Door

How-to Guide Process

Inbound Call Script + Booking Excellence

HVAC · Plumbing · Electrical · Cleaning · Lawn Care · Pool Service · Pest Control · Garage Door · Appliance Repair · Carpet Cleaning

How-to Guide Process

High-Ticket Equipment Sales

HVAC · Plumbing · Electrical · Roofing · Solar

How-to Guide Process

Customer Success Program for Service Business

HVAC · Plumbing · Electrical · Cleaning · Lawn Care · Pool Service · Pest Control · Garage Door · Appliance Repair · Carpet Cleaning

How-to Guide Process

Customer Journey Mapping for Service Business

HVAC · Plumbing · Electrical · Cleaning · Lawn Care · Pool Service · Pest Control · Garage Door · Appliance Repair · Carpet Cleaning

How-to Guide Process

Add-On Selling Techniques (Without Being Pushy)

HVAC · Plumbing · Electrical · Cleaning · Lawn Care · Pool Service · Pest Control · Garage Door · Appliance Repair · Carpet Cleaning

Reference Equipment

Pipe Threads + Sealant Selection Reference

Plumbing · HVAC

Reference Equipment

Hydronic Radiant Floor Heating Systems

Plumbing · HVAC

Troubleshooting Diagnostics

Zone Damper Chatters During a Call: Decision Tree

HVAC

Troubleshooting Diagnostics

Zone Call Drops When Second Zone Opens Bypass Vs Control Decision Tree

HVAC

Troubleshooting Diagnostics

Works In Test Mode But Not On Thermostat Call Decision Tree

HVAC

Troubleshooting Safety

Why Did the Rollout Switch Trip? Root-Cause Decision Tree

HVAC

Troubleshooting Safety

Why Did the Low-Pressure Lockout Trip? Charge vs Airflow Decision Tree

HVAC

Troubleshooting Safety

Why Did the High-Pressure Switch Trip? Root-Cause Decision Tree

HVAC

Troubleshooting Safety

Why Did the High Limit Trip? Airflow vs Overfire Decision Tree

HVAC

Troubleshooting Diagnostics

Why Did the Float Switch Trip? Condensate Root-Cause Decision Tree

HVAC

Troubleshooting Safety

Why Did The Aux Limit Lock Out Strip Heat: Root-Cause Decision Tree

HVAC

Troubleshooting Diagnostics

Which Test First Airflow Vs Charge Weak Cooling Sequencing Decision Tree

HVAC

Troubleshooting Diagnostics

Which Reading First Superheat Vs Static Pressure No Cooling Decision Tree

HVAC