HVAC How-To Guides
Step-by-step tutorials for DIY maintenance, repairs, and improvements to save money and extend equipment life
Important Safety Information
- ⚠️Always turn off power at the breaker before working on HVAC equipment
- ⚠️Never attempt refrigerant repairs - requires EPA certification
- ⚠️Use proper safety equipment including gloves and eye protection
- ⚠️When in doubt, call a licensed HVAC professional
- ⚠️Check local codes - some repairs require professional licensing
Featured How-To Guides
Complete AC Maintenance Checklist
Everything you need to do to keep your AC running efficiently
View GuideBasic Maintenance
Essential maintenance tasks every homeowner should know
How to Change Your HVAC Filter
Step-by-step guide to changing air filters for better air quality and efficiency
How to Clean AC Coils
Safely clean your AC coils to improve cooling efficiency
How to Identify Mold in Your Home
Visual color-by-color guide, DIY confirmation tests, and when to call a pro
How to Tilt a Window AC
Get the 1/4 to 1/2 inch backward tilt right so condensation drains outside, not into your room
Troubleshooting
Diagnose and fix common HVAC problems yourself
How to Fix AC Not Cooling
Troubleshoot and fix common cooling problems
How to Stop HVAC Noises
Identify and fix common HVAC noise problems
Energy Savings
Reduce energy costs with these efficiency improvements
How to Seal Air Ducts
Seal duct leaks to prevent energy waste
How to Calculate SEER Rating
SEER and SEER2 formulas with worked examples and annual cost calculations
Seasonal Preparation
Prepare your HVAC system for seasonal changes
Mini Split Maintenance Guide
Filter cleaning, coil cleaning, drain clearing, and annual service schedule
Advanced DIY
More complex projects for experienced DIYers
Mini Split Installation Cost & Planning
What a mini split install actually costs, what a DIY-eligible unit changes, and when a licensed installer is required
Tools & Resources
Essential Tools List
Complete list of tools needed for DIY HVAC maintenance and repairs
Tool guides coming soonVideo Tutorials
Watch step-by-step video guides for visual learners
Video tutorials coming soonWhen to Call a Professional
While many HVAC tasks can be done yourself, these situations require professional expertise:
Start Saving with DIY Maintenance
Step-by-step guides to common HVAC tasks you can do yourself.