The ColdSnap Blog
Practical guides, troubleshooting tips, and industry news for HVAC technicians.
How to Calculate Superheat and Subcooling: The Complete HVAC Guide
Master superheat and subcooling calculations with step-by-step formulas, normal ranges, and field measurement tips every HVAC tech needs to know.
R-410A Phase Out 2025: What HVAC Technicians Need to Know
The AIM Act is changing refrigerants. Learn about R-454B, R-32, A2L safety requirements, and what you need to do now to stay ahead.
HVAC Troubleshooting Guide: Diagnose Common AC and Furnace Problems
A systematic approach to diagnosing AC and furnace issues, from pressure readings to electrical checks. The field reference you'll actually use.
Best HVAC Apps for Technicians in 2026: Tools That Actually Help in the Field
An honest comparison of the top HVAC apps for technicians, including pricing, offline capability, and features that matter when you're on a roof.
HVAC Field Service Software: The Complete Guide for Shop Owners
Compare ServiceTitan, Jobber, Housecall Pro, and ColdSnap. Learn what field service software actually does and how to pick the right one for your shop.