<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Aux Heat on Utility Explained</title><link>https://utilityexplained.com/tags/aux-heat/</link><description>Recent content in Aux Heat on Utility Explained</description><generator>Hugo</generator><language>en-us</language><lastBuildDate>Sat, 27 Dec 2025 00:00:00 +0000</lastBuildDate><atom:link href="https://utilityexplained.com/tags/aux-heat/index.xml" rel="self" type="application/rss+xml"/><item><title>Heat Pump Running All Day in Winter? What Is Normal vs a Problem</title><link>https://utilityexplained.com/blog/heat-pump-running-all-day-in-winter/</link><pubDate>Sat, 27 Dec 2025 00:00:00 +0000</pubDate><guid>https://utilityexplained.com/blog/heat-pump-running-all-day-in-winter/</guid><description>&lt;h2 id="problem">The problem: it seems like the heat pump never stops&lt;/h2>
&lt;p class="lead">
 Your heat pump has been running for hours. The house is warm, but the
 system never seems to shut off. It feels like something is wrong.
 &lt;/p>
 &lt;p>
 In winter, long runtimes can be normal because heat pumps move heat
 instead of making it. Still, there is a line between normal and
 inefficient. This guide helps you tell the difference.
 &lt;/p>
 &lt;p>
 If you want the full system overview first, start with
 &lt;a href="https://utilityexplained.com/heating-cooling-explained"> Heating &amp;amp; Cooling Explained&lt;/a>.
 &lt;/p></description></item><item><title>Aux Heat vs Emergency Heat: What They Mean on Your Thermostat (Plain English)</title><link>https://utilityexplained.com/blog/aux-heat-vs-emergency-heat-meaning/</link><pubDate>Thu, 25 Dec 2025 00:00:00 +0000</pubDate><guid>https://utilityexplained.com/blog/aux-heat-vs-emergency-heat-meaning/</guid><description>&lt;h2 id="quick-answer">The short answer&lt;/h2>
&lt;p>
 &lt;strong>Aux Heat&lt;/strong> (auxiliary heat) usually means your heat pump
 is running &lt;strong>backup heat&lt;/strong> to keep up with demand--often
 during cold snaps, defrost cycles, or when you raise the thermostat
 several degrees at once.
 &lt;/p>
 &lt;p>
 &lt;strong>Emergency Heat&lt;/strong> is typically a &lt;strong>manual mode&lt;/strong>
 you switch on when the heat pump itself can't run properly (for example,
 it's malfunctioning). In many homes, emergency heat uses the same backup
 heater as aux heat--but forces the heat pump to stay off.
 &lt;/p></description></item><item><title>Duct Leaks Explained: Why Some Rooms Never Feel Right (and Bills Climb)</title><link>https://utilityexplained.com/blog/duct-leaks-symptoms-hvac-running-all-day/</link><pubDate>Thu, 25 Dec 2025 00:00:00 +0000</pubDate><guid>https://utilityexplained.com/blog/duct-leaks-symptoms-hvac-running-all-day/</guid><description>&lt;h2 id="quick-answer">The short answer&lt;/h2>
&lt;p>
 Duct leaks waste heating and cooling because some of the conditioned air
 you paid for never reaches your rooms. That can lead to uneven comfort,
 longer HVAC runtime, and higher energy use.
 &lt;/p>
 &lt;p>
 You don't need to diagnose every detail to benefit from this guide.
 The main goal is to recognize the common signs and understand why
 "the system runs all day" can happen even when the equipment is fine.
 &lt;/p></description></item></channel></rss>