{"id":229752,"date":"2024-01-08T11:00:00","date_gmt":"2024-01-08T19:00:00","guid":{"rendered":"https:\/\/www.johnnys.vegas\/blog\/?p=229752"},"modified":"2025-09-17T03:15:45","modified_gmt":"2025-09-17T10:15:45","slug":"the-one-major-rule-of-thumb-for-replacing-your-furnace","status":"publish","type":"post","link":"https:\/\/www.johnnys.vegas\/blog\/heating-service\/the-one-major-rule-of-thumb-for-replacing-your-furnace\/","title":{"rendered":"The One Major Rule of Thumb for Replacing Your Furnace"},"content":{"rendered":"\n<figure class=\"wp-block-image alignright size-medium\"><a href=\"https:\/\/www.johnnys.vegas\/blog\/wp-content\/uploads\/2024\/01\/iStock-1004469844-optimized_1920x1079-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/www.johnnys.vegas\/blog\/wp-content\/uploads\/2024\/01\/iStock-1004469844-optimized_1920x1079-1-300x169.jpg\" alt=\"Close-up of blue flames inside a gas furnace, indicating active furnace maintenance or heater operation. \n\" class=\"wp-image-229753\" srcset=\"https:\/\/www.johnnys.vegas\/blog\/wp-content\/uploads\/2024\/01\/iStock-1004469844-optimized_1920x1079-1-300x169.jpg 300w, https:\/\/www.johnnys.vegas\/blog\/wp-content\/uploads\/2024\/01\/iStock-1004469844-optimized_1920x1079-1-1024x575.jpg 1024w, https:\/\/www.johnnys.vegas\/blog\/wp-content\/uploads\/2024\/01\/iStock-1004469844-optimized_1920x1079-1-768x432.jpg 768w, https:\/\/www.johnnys.vegas\/blog\/wp-content\/uploads\/2024\/01\/iStock-1004469844-optimized_1920x1079-1-1536x863.jpg 1536w, https:\/\/www.johnnys.vegas\/blog\/wp-content\/uploads\/2024\/01\/iStock-1004469844-optimized_1920x1079-1.jpg 1920w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n<p>Your furnace is reliable, but it\u2019s starting to falter here and there. Maybe it\u2019s a small repair, or it could look like it\u2019s on its last leg. It\u2019s hard to tell just by looking at it, and as homeowners, we can all jump to conclusions when dollar signs fly around and our quality of life hangs in the balance. So how do you know if it\u2019s truly time to replace it?<\/p>\n\n\n\n<p>We\u2019ve handled tons of <a href=\"\/heating\/heating-repair-maintenance\" target=\"_blank\" rel=\"noopener\" title=\"\">heating repair in Las Vegas, NV<\/a> over the years and know whether it looks like a repair or replacement. If you think it might be time to get a new, high-efficiency furnace put in place, read this and we\u2019ll help you out.<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">It\u2019s Called the 50% Rule<\/h2>\n\n\n\n<p>The 50% rule dictates that if you get a repair bill that\u2019s really high, around 50% or more than the cost of a brand new heater, you opt for the new heater instead of repairing the old furnace. This sounds like a big leap, but hear us out.<\/p>\n\n\n\n<ul>\n<li><strong>Your Furnace is Old: <\/strong>It\u2019s not getting more efficient. If your furnace has hit the big double digit birthday (or gone beyond it), it\u2019s not unreasonable to assume that it\u2019s inefficient. Not only because furnace technology continues to improve over time, but because it\u2019s been worn down for a decade.<\/li>\n\n\n\n<li><strong>It\u2019s Not the Las Breakdown: <\/strong>Your furnace isn\u2019t just going to work for a long time now because the repair is expensive. Another repair is just around the bend, maybe a year out, but what will the cost look like then? You\u2019ll wish you\u2019d gone with a brand new unit instead.<\/li>\n\n\n\n<li><strong>It\u2019s Using Too Much Energy: <\/strong>Heaters have cycles, so when it kicks on, it has a certain amount of time that it runs for (on average) until you hit your desired temperature. That cycle gets longer when your furnace is inefficient, and inefficiency happens with wear and tear, which is just usage plus time. Longer cycles mean more energy to support them.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Repair Bill Under 50%? Here\u2019s Another Reason to Replace It<\/h2>\n\n\n\n<p>So the bill isn\u2019t quite as high as 50% for your repair. That\u2019s great, but the bill might still be high enough that it has you scrambling to make a decision. Consider this before you make your pick.<\/p>\n\n\n\n<p>The older your furnace is, the higher your energy bills will be. Furnaces also have an AFUE rating that defines, on a percentage basis, how much fuel is converted to heat that you can use. It\u2019s never 100% since the combustion process is imperfect, but furnace technology has come a long way, and you can find 95%+ AFUE ratings on modern furnaces.<\/p>\n\n\n\n<p>What does your furnace have? You might have a low 80% AFUE rating that\u2019s burning a hole in your pocket every time you turn it on, and you might not even know it. Let us inspect it and find out for you, and see if a replacement makes sense for your ongoing expenses.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Let\u2019s Replace That Furnace for You<\/h2>\n\n\n\n<p>If you\u2019re ready to repair your furnace, we\u2019re there for you, but if you do feel that a replacement is best, we can handle that project for you as well. All it takes is a phone call or a submission to our contact form here on our website, and we\u2019ll get back to you as soon as possible.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Frequently Asked Questions<\/h2>\n\n\n\n<p><strong>Question: What is the \u201c50% Rule\u201d for replacing a furnace?<br>Answer:<\/strong> The 50% Rule says that if a repair bill for your furnace is around <strong>50% or more<\/strong> of what a brand\u2011new unit would cost, it\u2019s usually better to replace the furnace rather than repair it. Age, efficiency, and future breakdowns are important factors.<a href=\"https:\/\/www.johnnys.vegas\/blog\/heating-service\/the-one-major-rule-of-thumb-for-replacing-your-furnace\/\">\u00a0<\/a><\/p>\n\n\n\n<p><strong>Question: Why does furnace age matter when considering repair vs replacement?<br>Answer:<\/strong> Older furnaces are generally less efficient, wear down over time, and may already suffer from degraded components. Investing in repairs for a furnace that\u2019s \u201con its last leg\u201d often leads to higher energy use and more frequent breakdowns<\/p>\n\n\n\n<p><strong>Question: How does efficiency (AFUE rating) influence the repair vs replacement decision?<br>Answer:<\/strong> Modern furnaces often have higher AFUE ratings (95%+), meaning they convert more fuel into usable heat. If your current unit has low AFUE (e.g., in the 80% range), you could be paying much more in operating costs, making replacement more economical in the long run.<\/p>\n\n\n\n<p><strong>Question: What considerations come into play even if the repair costs under 50%?<br>Answer:<\/strong> Even when repairs cost less than half of a new unit, factors like frequent past breakdowns, rising energy bills, inefficiency, and the furnace\u2019s age should influence whether replacement would save more over time.<\/p>\n\n\n\n<p class=\"has-text-align-center\"><a href=\"\/contact-us\/send-a-message\" target=\"_blank\" rel=\"noopener\" title=\"\"><strong>Contact us today<\/strong><\/a><strong> to schedule your furnace replacement as soon as possible.<\/strong><\/p>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the \u201c50% Rule\u201d for replacing a furnace?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 50% Rule says that if a repair bill for your furnace is around 50% or more of what a brand-new unit would cost, it\u2019s usually better to replace the furnace rather than repair it. 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Let&#8217;s help you find the answer to that question right now.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[50,15,88],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/posts\/229752"}],"collection":[{"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/comments?post=229752"}],"version-history":[{"count":2,"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/posts\/229752\/revisions"}],"predecessor-version":[{"id":230160,"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/posts\/229752\/revisions\/230160"}],"wp:attachment":[{"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/media?parent=229752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/categories?post=229752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.johnnys.vegas\/blog\/wp-json\/wp\/v2\/tags?post=229752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}