{"id":1740,"date":"2026-03-11T23:18:39","date_gmt":"2026-03-11T23:18:39","guid":{"rendered":"https:\/\/help.noritz.com\/?post_type=ht_kb&#038;p=1740"},"modified":"2026-03-12T17:46:46","modified_gmt":"2026-03-12T17:46:46","slug":"heat-pump-water-heater-faq","status":"publish","type":"ht_kb","link":"https:\/\/help.noritz.com\/index.php\/knowledge-base\/heat-pump-water-heater-faq\/","title":{"rendered":"Heat Pump Water Heater FAQ"},"content":{"rendered":"\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Heat Pump Water Heaters and our EcoTough Heat Pump: Efficient, Smart, and Cost-Saving<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">Water heaters are typically the second-largest energy user in a home, behind heating and cooling systems. Heat pump water heaters, including our <strong>EcoTough Heat Pump<\/strong>, provide a a highly efficient way to heat water while significantly reducing energy consumption and lowering utility costs compared to traditional electric resistance water heaters.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">To view our entire line of heat pump water heaters, visit <a href=\"https:\/\/noritz.com\/product?heater_type=residential&amp;heat_pump=NHP\">https:\/\/noritz.com\/product?heater_type=residential&amp;heat_pump=NHP<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-1&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-1-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-1\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">What is a heat pump water heater?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-1\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-1-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">A <strong>heat pump water heater (HPWH)<\/strong> is an energy-efficient water heating system that uses electricity to <strong>capture heat from the surrounding air and transfer it to the water<\/strong>. Unlike traditional electric resistance water heaters that generate heat directly, this process uses significantly less energy, making heat pump water heaters one of the <strong>most efficient water heating solutions available for homes<\/strong>.<br><\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-2&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-2-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-2\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">How energy efficient are heat pump water heaters?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-2\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-2-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">Heat pump water heaters can be <strong>up to three times more energy efficient than standard electric resistance water heaters<\/strong>. Compared to traditional gas water heaters, HPWHs can be <strong>three to four times more efficient<\/strong>, since gas systems lose energy during the venting process.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-3&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-3-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-3\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Do heat pump water heaters reduce energy bills?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-3\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-3-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">Yes. Heat pump water heaters are designed to lower energy consumption, which can translate to <strong>annual energy savings of 15\u201324% in new single-family homes compared to gas storage water heaters<\/strong>. Actual savings may vary depending on installation conditions, climate, and hot water usage.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-4&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-4-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-4\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Can heat pump water heaters be controlled with smart technology?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-4\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-4-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">Many modern heat pump water heaters including our EcoTough Heat Pump offer <strong>advanced smart controls<\/strong>, allowing homeowners to customize operating schedules by <strong>day, week, or month<\/strong>. Some models also support <strong>mobile app connectivity<\/strong>, making it easy to monitor performance and adjust temperature settings remotely.<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-6&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-6-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-6\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">Are heat pump water heaters environmentally friendly?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-6\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-6-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">Yes. Gas water heaters emit <strong>greenhouse gases during operation<\/strong>. Heat pump water heaters operate on electricity, and as renewable energy sources such as <strong>wind and solar power<\/strong> become more common, HPWHs help significantly <strong>reduce emissions and environmental impact<\/strong>.<\/p>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-5&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-5-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-5\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">How reliable are heat pump water heaters?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-5\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-5-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">Heat pump water heaters are designed for <strong>long-term reliability<\/strong>, with many manufacturers offering <strong>10-year warranties<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px\">During a power outage, hot water may still be available depending on the home\u2019s setup. When connected to <strong>solar panels or battery storage<\/strong>, hot water production can continue uninterrupted. A <strong>120V heat pump water heater can also be powered by a portable generator, battery system, or compatible EV power source<\/strong>. Even without backup power, the tank will <strong>retain hot water until the stored supply is used<\/strong>, allowing continued use for a period of time.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div data-wp-context=\"{ &quot;autoclose&quot;: false, &quot;accordionItems&quot;: [] }\" data-wp-interactive=\"core\/accordion\" role=\"group\" class=\"wp-block-accordion is-layout-flow wp-block-accordion-is-layout-flow\">\n<div data-wp-class--is-open=\"state.isOpen\" data-wp-context=\"{ &quot;id&quot;: &quot;accordion-item-7&quot;, &quot;openByDefault&quot;: false }\" data-wp-init=\"callbacks.initAccordionItems\" data-wp-on-window--hashchange=\"callbacks.hashChange\" class=\"wp-block-accordion-item is-layout-flow wp-block-accordion-item-is-layout-flow\">\n<h3 class=\"wp-block-accordion-heading\"><button aria-expanded=\"false\" aria-controls=\"accordion-item-7-panel\" data-wp-bind--aria-expanded=\"state.isOpen\" data-wp-on--click=\"actions.toggle\" data-wp-on--keydown=\"actions.handleKeyDown\" id=\"accordion-item-7\" type=\"button\" class=\"wp-block-accordion-heading__toggle\"><span class=\"wp-block-accordion-heading__toggle-title\">What should I consider when converting to a heat pump water heater?<\/span><span class=\"wp-block-accordion-heading__toggle-icon\" aria-hidden=\"true\">+<\/span><\/button><\/h3>\n\n\n\n<div inert aria-labelledby=\"accordion-item-7\" data-wp-bind--inert=\"!state.isOpen\" id=\"accordion-item-7-panel\" role=\"region\" class=\"wp-block-accordion-panel is-layout-flow wp-block-accordion-panel-is-layout-flow\">\n<p class=\"wp-block-paragraph\">When upgrading to a heat pump water heater, several factors should be considered. Always consult a <strong>qualified professional<\/strong> to ensure proper installation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Location<\/strong><br>Many HPWHs can be installed in the same location as an existing electric or gas water heater using existing plumbing connections. Because the system pulls heat from the surrounding air, most models require <strong>about 1,000 cubic feet of air space<\/strong>, making <strong>garages and basements ideal installation locations<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Electrical Requirements<\/strong><br>Some models require a <strong>dedicated 30-amp breaker and 240V electrical circuit<\/strong>, while <strong>120V retrofit-ready heat pump water heaters<\/strong> are also available for easier installation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sizing<\/strong><br>Heat pump water heaters often use <strong>larger storage tanks<\/strong> to maximize efficiency. For example, a household of <strong>three to four people that might use a 50-gallon gas water heater may benefit from an 80-gallon heat pump water heater<\/strong>, allowing higher hot water demand without switching to hybrid heating modes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sound Levels<\/strong><br>Heat pump water heaters operate at <strong>low sound levels, typically around 45 decibels<\/strong>, similar to the background noise of a portable fan. When installed in garages or utility areas, most homeowners <strong>rarely notice the system running<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"889\" src=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-1024x889.jpg\" alt=\"\" class=\"wp-image-1752\" srcset=\"https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-1024x889.jpg 1024w, https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-300x260.jpg 300w, https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-768x667.jpg 768w, https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-50x43.jpg 50w, https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-1536x1334.jpg 1536w, https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-2048x1778.jpg 2048w, https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-60x52.jpg 60w, https:\/\/help.noritz.com\/wp-content\/uploads\/2026\/03\/EcoTough_Scene1-100x87.jpg 100w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Heat Pump Water Heaters and our EcoTough Heat Pump: Efficient, Smart, and Cost-Saving Water heaters are typically the second-largest energy user in a home, behind heating and cooling systems. Heat pump water heaters, including our EcoTough Heat Pump, provide a a highly efficient way to heat water while significantly reducing&#8230;<\/p>\n","protected":false},"author":1,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[],"ht-kb-tag":[],"class_list":["post-1740","ht_kb","type-ht_kb","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/1740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/comments?post=1740"}],"version-history":[{"count":17,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/1740\/revisions"}],"predecessor-version":[{"id":1767,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/1740\/revisions\/1767"}],"wp:attachment":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/media?parent=1740"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb-category?post=1740"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb-tag?post=1740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}