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Fall Heat Pump Checklist: Preparing Cold-Climate Systems for Heating Season
Heating season is coming. Use this fall checklist to prepare cold-climate heat pumps for winter, from airflow and outdoor-unit inspection...
A2L Refrigerant Tools: What HVAC Technicians Need for R32 and R454B
Do HVAC technicians need new tools for R32 and R454B? Learn which service tools require A2L compatibility, which familiar tools may still...
R454B Normal Operating Pressures Explained: Why PSI Alone Is Not Enough
What should R454B operating pressures be? Learn why suction and high-side PSI vary with load, airflow, ambient conditions, and equipment ...
R32 Superheat and Subcooling Explained: A Practical HVAC Guide
Learn how to measure, calculate, and interpret R32 superheat and subcooling. A practical guide for HVAC technicians covering formulas, fi...
R454B PT Chart: Pressure-Temperature Chart Explained
Learn how to read an R454B pressure-temperature (PT) chart and correctly use bubble point and dew point for HVAC service. This guide expl...
Cold-Climate Heat Pumps in 2026: What HVAC Professionals Should Look for Beyond the Rating
Cold-Climate Heat Pumps in 2026: A Guide for HVAC Professionals | ZERO
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One VRF System, Multiple Building Zones: Designing for Mixed-Use Projects
Mixed-use buildings contain spaces with different schedules, loads, and comfort requirements. This article explains how ZERO ZTVT VRF sys...
Why Data Center Cooling Is Becoming HVAC’s Next Major Growth Market
AI, cloud computing, and higher rack densities are driving new demand for efficient data center cooling. This article explores the techno...
Europe’s AC Shortage Is Creating New Opportunities for Installers and HVAC Buyers
A practical guide for HVAC buyers and installers on Europe’s rising AC demand, key sourcing factors, and why cooling & heating split AC m...
Is a 5 Ton Rooftop AC Unit Right for Your Commercial Space?
A 5 ton rooftop AC unit can be a practical choice for certain small to medium commercial spaces, but it is not suitable for every busines...
Heat Index Explained: Why 95°F Can Feel Like 110°F
This article explains why 95°F can feel like 110°F when humidity is high. It breaks down how the heat index works, why humid air makes it...
Europe’s AC Wake-Up Call: What Homeowners Should Know Before Buying
Europe’s hotter summers are changing how homeowners think about air conditioning. This guide explains what to consider before buying an A...