{"id":11179,"date":"2024-05-26T21:50:49","date_gmt":"2024-05-26T21:50:49","guid":{"rendered":"https:\/\/topat10.com\/?p=11179"},"modified":"2024-05-26T21:50:49","modified_gmt":"2024-05-26T21:50:49","slug":"single-stage-vs-two-stage-furnaces","status":"publish","type":"post","link":"https:\/\/topat10.com\/?p=11179","title":{"rendered":"Single Stage vs. Two Stage Furnaces"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div>\n<div class=\"gb-grid-wrapper gb-grid-wrapper-35b8a76c\">\n<div class=\"gb-grid-column gb-grid-column-8d977236\">\n<div class=\"gb-container gb-container-8d977236\">\n<p>An energy-efficient furnace keeps you warm and cozy without high heating costs. It maintains a comfortable temperature in your home without burdening you with excessive energy bills.<\/p>\n<p>The number of stages your furnace can operate in \u2014 either a single-stage furnace or a two-stage furnace \u2014 affects both its efficiency and performance. When upgrading your HVAC system, consider this important factor.<\/p>\n<p>For homeowners on a budget, a basic single-stage furnace is a sensible choice, particularly in mild climates. However, if you live in a cold winter climate and want to reduce heating costs, investing in a two-stage furnace is worth it.<\/p>\n<\/div>\n<\/div>\n<div class=\"gb-grid-column gb-grid-column-e4302928\">\n<div class=\"gb-container gb-container-e4302928\">\n<figure class=\"gb-block-image gb-block-image-fb77e6f5\"><img decoding=\"async\" class=\"gb-image gb-image-fb77e6f5 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"data:image\/svg+xml,%3Csvg%20xmlns=\" http:=\"\" data-lazy-src=\"https:\/\/d7fcfvvxwoz9e.cloudfront.net\/dom43635\/wp-content\/uploads\/2018\/12\/examining-furnace.jpg\"\/><noscript><img decoding=\"async\" class=\"gb-image gb-image-fb77e6f5 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/d7fcfvvxwoz9e.cloudfront.net\/dom43635\/wp-content\/uploads\/2018\/12\/examining-furnace.jpg\"\/><\/noscript><figcaption class=\"gb-headline gb-headline-84978964 gb-headline-text\">\u00a9 indyedge \/ Adobe Stock<\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>In this article I\u2019ll explain the differences between both furnace types and the pros and cons of each so you can make an informed decision. <\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\" id=\"h-single-stage-furnaces-low-cost-equipment-for-basic-home-heating\">Single-Stage Furnaces: Low-Cost Equipment for Basic Home Heating<\/h2>\n<p>In furnace terminology, \u201cstages\u201d refers to the levels of heat output a type of furnace can provide. A single-stage furnace, the most basic design available, has a fixed gas valve and a single-speed blower fan motor. This type of furnace has only two settings: off and high. As soon as the furnace turns on, it starts running at full blast. Whether it\u2019s a mildly chilly fall evening or a bitterly cold winter night, the single-stage furnace runs at the same setting.<\/p>\n<p>If your furnace type was manufactured before 1992, there\u2019s a good chance it\u2019s a single-stage furnace. While these single-stage furnaces perform the basic job of heating your house, they have less energy-efficiency and leave something to be desired.<\/p>\n<div class=\"gb-container gb-container-570c67bc\">\n<div class=\"gb-container gb-container-caed73dc gb-tabs\" data-opened-tab=\"1\">\n<p><button class=\"gb-button gb-button-ff18aa13 gb-button-text gb-tabs__button gb-block-is-current\">Pros<\/button><\/p>\n<p><button class=\"gb-button gb-button-b54d603c gb-button-text gb-tabs__button\">Cons<\/button><\/p>\n<div class=\"gb-container gb-container-68550db8 gb-tabs__items\">\n<div class=\"gb-container gb-container-690b78b1 gb-tabs__item gb-tabs__item-open\">\n<div class=\"gb-grid-wrapper gb-grid-wrapper-a9108d37\">\n<div class=\"gb-grid-column gb-grid-column-f2450b16\">\n<div class=\"gb-container gb-container-f2450b16\">\n<div class=\"gb-headline gb-headline-e0d29bd3\"><span class=\"gb-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewbox=\"0 0 512 512\"><path fill=\"currentColor\" d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"\/><\/svg><\/span><span class=\"gb-headline-text\">Improvements over old technology<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"gb-container gb-container-18f190b2 gb-tabs__item\">\n<div class=\"gb-grid-wrapper gb-grid-wrapper-ad3f605f\">\n<div class=\"gb-grid-column gb-grid-column-a5da3cb5\">\n<div class=\"gb-container gb-container-a5da3cb5\">\n<div class=\"gb-headline gb-headline-35a7e399\"><span class=\"gb-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\" height=\"1em\"><path d=\"M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM175 175c9.4-9.4 24.6-9.4 33.9 0l47 47 47-47c9.4-9.4 24.6-9.4 33.9 0s9.4 24.6 0 33.9l-47 47 47 47c9.4 9.4 9.4 24.6 0 33.9s-24.6 9.4-33.9 0l-47-47-47 47c-9.4 9.4-24.6 9.4-33.9 0s-9.4-24.6 0-33.9l47-47-47-47c-9.4-9.4-9.4-24.6 0-33.9z\"\/><\/svg><\/span><span class=\"gb-headline-text\">Inconsistent temperatures<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\" id=\"h-pros\">Pros<\/h3>\n<p><strong>Low purchase price<\/strong> \u2014 Single-stage furnaces are the least expensive type of furnace models available. If your existing furnace fails suddenly and you can\u2019t wait to save up for a more advanced model, a single-stage model is an acceptable replacement.<\/p>\n<p><strong>Improvements over old technology<\/strong> \u2014Single-stage furnaces are among the least energy-efficient types made today. However, a modern single-stage furnace is still more efficient than one built 20 years ago. If your furnace is decades old, but a high-efficiency upgrade isn\u2019t in your budget, you can still lower your energy bills by investing in a new single-stage furnace.<\/p>\n<h3 class=\"wp-block-heading\" id=\"h-cons\">Cons<\/h3>\n<p><strong>Wasted energy<\/strong> \u2014 If you live in a mild climate for most of the year, you don\u2019t need to run your single-stage furnace at full capacity. In fact, the gas valve and blower fan\u2019s maximum capacities are designed to keep you warm in your area\u2019s coldest winter temperatures.<\/p>\n<p>Throughout much of the late fall and early spring, a lower, energy-saving setting will be more than enough to maintain a comfortable temperature in your home.<\/p>\n<p>A single-stage furnace is less energy efficient because it only has one setting and can\u2019t adjust to different heating needs. These single-stage furnaces also cycle often, so the motor has less time to reach its optimal energy-efficient speed, similar to a car in stop-and-go traffic.<\/p>\n<p><strong>Inconsistent temperatures<\/strong> \u2014 In mildly cold weather, a single-stage furnace will kick on quickly, push out a large amount of warm air, then shut off. These sudden blasts contribute to fluctuating temperatures as well as hot and cold spots in your home.<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\" id=\"h-two-stage-furnaces-heating-that-adjusts-to-your-needs\">Two-Stage Furnaces: Heating That Adjusts to Your Needs<\/h2>\n<p>Two-stage furnaces, also known as dual-stage furnaces, can run at two different settings. These furnaces have a two-stage gas valve and a variable-speed blower motor. Instead of being either open or closed, the gas valve can also be partly open. The blower fan can adjust its speed to meet your heating needs efficiently.<\/p>\n<p>These two factors enable your two-stage furnace to operate at full capacity when you need a lot of heat and at around 60 to 65% capacity when you need just a little heat.<\/p>\n<div class=\"gb-container gb-container-3dfccaba\">\n<div class=\"gb-container gb-container-3e95a13c gb-tabs\" data-opened-tab=\"1\">\n<p><button class=\"gb-button gb-button-9e220d09 gb-button-text gb-tabs__button gb-block-is-current\">Pros<\/button><\/p>\n<p><button class=\"gb-button gb-button-f20d5777 gb-button-text gb-tabs__button\">Cons<\/button><\/p>\n<div class=\"gb-container gb-container-f61d5d6d gb-tabs__items\">\n<div class=\"gb-container gb-container-55d9cad3 gb-tabs__item gb-tabs__item-open\">\n<div class=\"gb-grid-wrapper gb-grid-wrapper-51cefd81\">\n<div class=\"gb-grid-column gb-grid-column-24cdd50d\">\n<div class=\"gb-container gb-container-24cdd50d\">\n<div class=\"gb-headline gb-headline-b003be43\"><span class=\"gb-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" role=\"img\" height=\"1em\" width=\"1em\" viewbox=\"0 0 512 512\"><path fill=\"currentColor\" d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"\/><\/svg><\/span><span class=\"gb-headline-text\">Improved indoor air quality<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"gb-container gb-container-3a625496 gb-tabs__item\">\n<div class=\"gb-grid-wrapper gb-grid-wrapper-cfb8cec9\">\n<div class=\"gb-grid-column gb-grid-column-861450c4\">\n<div class=\"gb-container gb-container-861450c4\">\n<div class=\"gb-headline gb-headline-2110cf5c\"><span class=\"gb-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\" height=\"1em\"><path d=\"M256 512A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM175 175c9.4-9.4 24.6-9.4 33.9 0l47 47 47-47c9.4-9.4 24.6-9.4 33.9 0s9.4 24.6 0 33.9l-47 47 47 47c9.4 9.4 9.4 24.6 0 33.9s-24.6 9.4-33.9 0l-47-47-47 47c-9.4 9.4-24.6 9.4-33.9 0s-9.4-24.6 0-33.9l47-47-47-47c-9.4-9.4-9.4-24.6 0-33.9z\"\/><\/svg><\/span><span class=\"gb-headline-text\">Possible maintenance concerns<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\" id=\"h-pros-0\">Pros<\/h3>\n<p><strong>Energy savings<\/strong> \u2014 In most climates, a two-stage furnace runs on the lower setting around 75% of the time. During those times, a two-stage furnace uses less energy compared to a furnace type that doesn\u2019t have the option of a lower setting. Keep in mind, though, that this doesn\u2019t change the furnace\u2019s <a aria-label=\"Energy savings - In most climates, a two-stage furnace runs on the lower setting around 75 percent of the time. During those times, it uses less energy compared to a furnace that doesn't have the option of a lower setting. Keep in mind, though, that this doesn't change the furnace's annual fuel utilization efficiency (AFUE), which tells you how fuel efficient the furnace is over the year.  (opens in a new tab)\" href=\"https:\/\/www.energy.gov\/energysaver\/home-heating-systems\/furnaces-and-boilers\" target=\"_blank\" rel=\"noreferrer noopener\">annual fuel utilization <\/a><a href=\"https:\/\/www.energy.gov\/energysaver\/furnaces-and-boilers#:~:text=AFUE%20is%20a%20measure%20of,annual%20fossil%20fuel%20energy%20consumed.\" target=\"_blank\" rel=\"noreferrer noopener\">efficiency<\/a> (AFUE), which tells you how fuel-efficient the furnace is over the year.<\/p>\n<p>A 95% AFUE furnace is 95% efficient throughout the year regardless of what setting it runs at. Likewise, a 95% AFUE single-stage furnace is more efficient than a 90% AFUE two-stage furnace.<\/p>\n<p><strong>More stable temperatures<\/strong> \u2014 When running at its lower setting, a two-stage furnace provides a lower volume of warm air over a longer period. You\u2019ll get a gentle, steady flow instead of intermittent blasts. This keeps your indoor desired temperature more stable and allows the warm furnace air to mix with the cold room air for more even heating. It\u2019s especially beneficial in small houses where temperature fluctuations are more noticeable.<\/p>\n<p><strong>Improved indoor air quality<\/strong> \u2014 Because these furnaces run for longer periods than single-stage models, they circulate your home\u2019s air through the air filter more often. This helps the filter remove more airborne contaminants, such as pet hair, pollen, and mold spores, from your air.<\/p>\n<p><strong>Reduced noise<\/strong> \u2014 When the blower fan runs at a lower speed, it makes less noise. However, these two-stage furnaces don\u2019t significantly reduce the noise from air moving through the ducts.<\/p>\n<h3 class=\"wp-block-heading\" id=\"h-cons-0\">Cons<\/h3>\n<p><strong>Higher upfront costs<\/strong> \u2014 Two-stage furnaces are more expensive to buy than single-stage models. You\u2019ll save on monthly heating bills, but unless you live in a cold climate, you might not recoup your investment as fast as you hoped.<\/p>\n<p><strong>Possible maintenance concerns<\/strong> \u2014 Two-stage furnaces have a reputation for being more prone to breakdowns, but the evidence is inconclusive. While they run for longer periods than single-stage models, they also cycle less often. This means they put extra wear and tear on the motor due to longer operation but protect the motor from the wear caused by frequent starting and stopping. When parts do fail, replacements are often harder to find and install, so repairs or things like <a href=\"https:\/\/todayshomeowner.com\/hvac\/cost\/furnace-blower-motor-cost\/\">furnace blower motor replacement costs<\/a> are more expensive.<\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<h2 class=\"wp-block-heading\" id=\"h-so-what-is-the-best-stage-furnace-for-you\">So, What Is the Best Stage Furnace for You?<\/h2>\n<p>Whether a single-stage or two-stage furnace is right for you depends on your climate, your home\u2019s size, and floor plan, your personal preferences, and your budget.<\/p>\n<p>If you live in a mild climate and have budget concerns, a single-stage furnace is a practical and cost-effective choice. However, if you experience bitterly cold winters and want to maximize energy efficiency and your home\u2019s comfort, invest in a two-stage furnace.<\/p>\n<p>Consult with an HVAC professional to get a personalized recommendation specific to your home. With the right furnace model, properly sized and installed, you can enjoy reliable comfort and efficient heating for years to come.<\/p>\n<div id=\"hm-faq-block_4bfbecc474f5a55385200f7ad1bb7b3c 1\" class=\"hm-faq hm-faq--two-column\">\n<h2 class=\"hm-faq__title \" data-toc-text=\"Frequently Asked Questions\">Frequently Asked Questions<\/h2>\n<div class=\"hm-faq__item\">\n<h3 class=\"faqQuestion accordion mb-0\">\n                        What is a single-stage furnace?                    <\/h3>\n<div class=\"faqAnswer panel\">\n<p>A single-stage furnace is sometimes called a single-speed furnace. This type of furnace has only two options, either on or off. When receiving a signal from the thermostat to provide heat, it operates at its maximum power until the thermostat\u2019s temperature is reached and then it shuts down.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<hr class=\"my-2\"\/>\n<div class=\"hm-faq__item\">\n<h3 class=\"faqQuestion accordion mb-0\">\n                        What is a two-stage furnace?                    <\/h3>\n<div class=\"faqAnswer panel\">\n<p>A two-stage furnace has two outputs, low and high. The low setting meets most heating needs in a home and distributes heat evenly. On bitterly cold days the high setting is used.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<hr class=\"my-2\"\/>\n                    <\/div>\n<div class=\"gb-container gb-container-582f500d\">\n<p>Article Update Log<\/p>\n<div class=\"gb-grid-wrapper gb-grid-wrapper-4ccf9a66\">\n<div class=\"gb-grid-column gb-grid-column-a62d97de\">\n<div class=\"gb-container gb-container-a62d97de\">\n<div class=\"gb-headline gb-headline-1a89dba4 gb-headline-text provider-box\">Reviewed for accuracy, cost data, industry best practices, and expert advice by <a href=\"https:\/\/todayshomeowner.com\/author\/laurieengle\/\">Laurie Engle.<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>An energy-efficient furnace keeps you warm and cozy without high heating costs. It maintains a comfortable temperature in your home without burdening you with excessive energy bills. The number of stages your furnace can operate in \u2014 either a single-stage furnace or a two-stage furnace \u2014 affects both its efficiency and performance. When upgrading your [&hellip;]<\/p>\n","protected":false},"author":445,"featured_media":11180,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[124],"tags":[],"class_list":["post-11179","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-home-improvement"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Single Stage vs. Two Stage Furnaces | Unlock Informed Choices with Us<\/title>\n<meta name=\"description\" content=\"Find out if a single stage or two stage furnace is right for your home&#039;s heating needs. 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Get a free consultation to make the best choice.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/topat10.com\/?p=11179\" \/>\n<meta property=\"og:site_name\" content=\"Unlock Informed Choices with Us\" \/>\n<meta property=\"article:published_time\" content=\"2024-05-26T21:50:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/topat10.com\/wp-content\/uploads\/2024\/05\/examining-furnace.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"660\" \/>\n\t<meta property=\"og:image:height\" content=\"440\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Henry Parker\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Henry Parker\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/topat10.com\\\/?p=11179#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/topat10.com\\\/?p=11179\"},\"author\":{\"name\":\"Henry Parker\",\"@id\":\"https:\\\/\\\/topat10.com\\\/#\\\/schema\\\/person\\\/5416a64946057dc93e6ff1d59813d3e4\"},\"headline\":\"Single Stage vs. Two Stage Furnaces\",\"datePublished\":\"2024-05-26T21:50:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/topat10.com\\\/?p=11179\"},\"wordCount\":1233,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/topat10.com\\\/?p=11179#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/topat10.com\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/examining-furnace.jpg\",\"articleSection\":[\"Home Improvement\"],\"inLanguage\":\"en\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/topat10.com\\\/?p=11179#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/topat10.com\\\/?p=11179\",\"url\":\"https:\\\/\\\/topat10.com\\\/?p=11179\",\"name\":\"Single Stage vs. Two Stage Furnaces | Unlock Informed Choices with Us\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/topat10.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/topat10.com\\\/?p=11179#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/topat10.com\\\/?p=11179#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/topat10.com\\\/wp-content\\\/uploads\\\/2024\\\/05\\\/examining-furnace.jpg\",\"datePublished\":\"2024-05-26T21:50:49+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/topat10.com\\\/#\\\/schema\\\/person\\\/5416a64946057dc93e6ff1d59813d3e4\"},\"description\":\"Find out if a single stage or two stage furnace is right for your home&#039;s heating needs. 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