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Showing posts from August, 2025

Heat Pump Defrost Mode: What It Is and Why It Happens

If you’ve ever looked outside on a chilly morning and noticed your heat pump steaming or even appearing to shut off for a few minutes—relax. That’s not a malfunction; that’s defrost mode doing its job. As a veteran HVAC technician and system analyst, I’ve walked countless homeowners through this exact scenario. Let me break it down for you: what’s happening, why it’s essential, and how your Trane Heat Pump System (or any quality brand) keeps things running efficiently even when the weather’s working against it. What Is Heat Pump Defrost Mode? Defrost mode is a built-in process your heat pump uses to remove frost or ice buildup from the outdoor coil during cold weather. Here’s why it matters: When outdoor temps drop and humidity is present, frost forms on the coil . That frost blocks airflow and lowers efficiency. The system needs to remove that ice to keep running properly. So, it temporarily switches into cooling mode to reverse the refrigerant flow —heating the out...

Why Your Old HVAC Might Be Costing You More Than a New Heat Pump

If you're hanging on to an aging HVAC system, hoping to squeeze out another season, it’s time to run the real numbers. That clunky old unit humming away in the background? It could be draining more from your wallet than you'd ever expect— especially compared to a high-efficiency Trane Heat Pump system . As an HVAC technician who's worked on everything from century-old ductwork to cutting-edge dual-fuel systems, I’ve seen this scenario play out time and again: homeowners tolerating inefficiency, noise, and skyrocketing utility bills because they believe replacing their system will be too expensive. The truth? Your current HVAC system might be costing you more each month than a new system would over time. Let me break it down. 1. The Hidden Cost of an Aging HVAC System When a unit is 10–15 years old, it’s not just outdated—it’s underperforming . Most older HVAC systems operate at 60% to 70% efficiency , meaning 30 to 40 cents of every dollar you spend on heating or coolin...