{"id":8503,"date":"2025-08-14T07:39:33","date_gmt":"2025-08-14T07:39:33","guid":{"rendered":"https:\/\/ocram-clima.com\/preventive-maintenance-in-hvac-systems\/"},"modified":"2025-08-14T09:14:58","modified_gmt":"2025-08-14T09:14:58","slug":"preventive-maintenance-in-hvac-systems","status":"publish","type":"post","link":"https:\/\/ocram-clima.com\/en\/preventive-maintenance-in-hvac-systems\/","title":{"rendered":"Preventive maintenance in HVAC systems"},"content":{"rendered":"\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><nav><ul><li class=\"\"><a href=\"#porque-e-que-a-manutencao-preventiva-e-tao-importante\">Why is preventive maintenance so important? <\/a><\/li><li class=\"\"><a href=\"#principais-acoes-de-manutencao-preventiva\">Main preventive maintenance actions: <\/a><ul><li class=\"\"><a href=\"#manutencao-e-limpeza-de-unidades-de-tratamento-de-ar-uta-mu-e-uta-hmu\">Maintenance and cleaning of Air Handling Units (AHU MU and AHU HMU) <\/a><\/li><li class=\"\"><a href=\"#manutencao-e-limpeza-de-recuperadores-de-calor-kt-pro-e-kt-home\">Maintenance and cleaning of Heat Recovery Units (KT Pro and KT Home) <\/a><\/li><li class=\"\"><a href=\"#nps-master-purificador-de-ar-para-gorduras-e-odores\">Maintenance and cleaning of Nano Purifying System (NPS\u00ae Master)<\/a><\/li><\/ul><\/li><li class=\"\"><a href=\"#impacto-energetico-da-ma-manutencao\">Energy impact of poor maintenance <\/a><\/li><\/ul><\/nav><\/div>\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#manual-de-manuten%C3%A7%C3%A3o\" data-type=\"internal\" data-id=\"#manual-de-manuten&#xE7;&#xE3;o\">Request a detailed equipment maintenance manual<\/a><\/li>\n<\/ul>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Air conditioning is not just a matter of comfort, it is also an essential factor in ensuring health, equipment performance and energy efficiency in commercial and industrial buildings. <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">However, all of this depends on an often overlooked element: preventive maintenance. When performed properly, it extends the life of equipment, improves indoor air quality and reduces energy and operating costs.  <\/p>\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h2 class=\"wp-block-heading\" id=\"porque-e-que-a-manutencao-preventiva-e-tao-importante\"><strong>Why is preventive maintenance so important?<\/strong> <\/h2>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Regular maintenance of an HVAC system is not just a technical obligation, it ensures that the entire system operates with minimum effort and maximum return. Here are the main benefits of preventive maintenance:  <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<ul class=\"wp-block-list\">\n<li>Lower energy consumption: clean filters and unobstructed fins require less effort from the fans and operate with lower energy consumption, reducing operating costs. <\/li>\n\n\n\n<li>Better air quality: Periodic filter replacement prevents the proliferation of dust, mould and other contaminants, providing a healthier environment. <\/li>\n\n\n\n<li>Reduction of downtime and unforeseen costs: Frequent inspections identify premature wear and tear and prevent unexpected downtime that can lead to high replacement costs. <\/li>\n\n\n\n<li>Increased Equipment Lifespan: Proper maintenance ensures that components operate within ideal standards, preventing early failures and extending their durability. <\/li>\n\n\n\n<li>Compliance with required technical and environmental standards. <\/li>\n<\/ul>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-1-768x1024.png\" alt=\"preventive maintenance-avac\" class=\"wp-image-8413\" srcset=\"https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-1-768x1024.png 768w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-1-225x300.png 225w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-1-1152x1536.png 1152w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-1-1536x2048.png 1536w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-1-500x667.png 500w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-1-scaled.png 1920w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-2-768x1024.png\" alt=\"preventive maintenance-avac-2\" class=\"wp-image-8410\" srcset=\"https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-2-768x1024.png 768w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-2-225x300.png 225w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-2-1152x1536.png 1152w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-2-1536x2048.png 1536w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-2-500x667.png 500w, https:\/\/ocram-clima.com\/wp-content\/uploads\/2025\/08\/ocram-clima-manutencao-preventiva-2-scaled.png 1920w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n<\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\"><em>Image caption: Example of the interior of an Air Handling Unit without preventive maintenance, after 18 months.<\/em> <\/p>\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h2 class=\"wp-block-heading\" id=\"principais-acoes-de-manutencao-preventiva\"><strong>Main Preventive Maintenance Actions:<\/strong> <\/h2>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Preventive maintenance of systems varies depending on the equipment in question, however, a well-defined schedule should be followed according to operating conditions. <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">The main actions include: <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<ul class=\"wp-block-list\">\n<li>Regular cleaning of the unit to prevent dust or other volatile particles from accumulating that are not retained in the filters. <\/li>\n\n\n\n<li>Cleaning the battery fins (if applicable) to unblock the air passage, as if they are dirty, efficiency will be low and we will not obtain the necessary performance. <\/li>\n\n\n\n<li>Regular maintenance of the filters helps to maintain low pressure drop in the unit, thus reducing the fan&#8217;s energy consumption and substantially lowering operating costs. <\/li>\n\n\n\n<li>Inspection of components and verification of system efficiency. <\/li>\n<\/ul>\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h3 class=\"wp-block-heading\" id=\"manutencao-e-limpeza-de-unidades-de-tratamento-de-ar-uta-mu-e-uta-hmu\"><strong>Maintenance and Cleaning of Air Handling Units (AHU MU and AHU HMU)<\/strong> <\/h3>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Filters: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Pre-filters: replace every 6 months.<\/li>\n\n\n\n<li>Final filters: replace every 12 months.<\/li>\n<\/ul>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Essential care: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Do not operate the unit without filters. <\/li>\n\n\n\n<li>Check for contamination, deterioration and corrosion, both general and of components: every 3 to 6 months. <\/li>\n\n\n\n<li>Check for fluid leaks in pipes and manifolds: every 6 months. <\/li>\n\n\n\n<li>Check clogging levels regularly: every 12 months. <\/li>\n\n\n\n<li>Carry out hygiene inspections: after start-up; every 2 years if you have humidifiers; every 3 years if you do not have humidifiers.<\/li>\n<\/ul>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Cleaning: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Cold water and pH neutral or slightly alkaline detergents. <\/li>\n\n\n\n<li>Use disinfectants suitable for different surfaces, with alcohol solutions never exceeding 95%. <\/li>\n<\/ul>\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h3 class=\"wp-block-heading\" id=\"manutencao-e-limpeza-de-recuperadores-de-calor-kt-pro-e-kt-home\"><strong>Maintenance and Cleaning of Heat Recovery Units (KT Pro and KT Home)<\/strong> <\/h3>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Filters: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Periodic inspection and replacement as needed due to wear. <\/li>\n<\/ul>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Cleaning: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Every 6 months. <\/li>\n\n\n\n<li>Use water at room temperature. <\/li>\n\n\n\n<li>Use pH-neutral or slightly alkaline detergents that are compatible with the materials. <\/li>\n<\/ul>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Essential care: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Regularly check for blockages in the fresh air or stale air intake. <\/li>\n\n\n\n<li>Check for condensation, contamination, deterioration and corrosion, both general and of components: every 3 to 6 months. <\/li>\n\n\n\n<li>Check for fluid leaks in pipes and manifolds: every 6 months. <\/li>\n<\/ul>\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h3 class=\"wp-block-heading\" id=\"nps-master-purificador-de-ar-para-gorduras-e-odores\"><strong>Maintenance and Cleaning <\/strong>of Nano Purifying Systems (<strong>NPS\u00ae Master<\/strong>)<\/h3>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Filters: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>They should be cleaned every month. <\/li>\n\n\n\n<li>Replaced if damaged: every 6 to 12 months. <\/li>\n\n\n\n<li>Intelligent warning system, equipped with automatic replacement alarms. <\/li>\n<\/ul>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Internal cleaning: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>Every 6 months, with an alkaline solution diluted in water. Ozone lamps must be removed before cleaning.  <\/li>\n\n\n\n<li>Ozone lamps: <\/li>\n\n\n\n<li>Clean every 3 months.<\/li>\n\n\n\n<li>Replace with specific safety precautions (after cooling and residual ozone levels). <\/li>\n<\/ul>\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<h2 class=\"wp-block-heading\" id=\"impacto-energetico-da-ma-manutencao\"><strong>Energy impact of poor maintenance<\/strong> <\/h2>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Replacing and cleaning filters has a direct impact on energy consumption. An OCRAMclima\u00ae simulation with a flow rate of 11,000 m\u00b3\/h shows:  <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>INS+EXT pressure drop<\/strong><br\/>Clean filters (G4+M6+F9\/M5)<br\/>Dirty filters (G4+M6+F9\/M5)<\/td><td><br\/>1350 Pa<br\/>1650 Pa<\/td><\/tr><tr><td>Hourly consumption with clean filters <\/td><td>6.08kW<\/td><\/tr><tr><td>Hourly consumption with dirty filters<\/td><td>7.1kW<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Considering the average energy price as 0.24\u20ac\/kWh:<\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>24-hour operation<\/strong><\/td><td><strong>1 Day<\/strong><\/td><td><strong>1 Month <\/strong><\/td><td><strong>1 Year <\/strong><\/td><\/tr><tr><td> Price with clean filters<\/td><td> 35,0\u20ac<\/td><td> 1 050\u20ac<\/td><td> 12 600\u20ac<\/td><\/tr><tr><td> Price with dirty filters<\/td><td> 40,9\u20ac<\/td><td> 1 227\u20ac<\/td><td> 14 724\u20ac<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">The difference of 2 124\u20ac\/year proves that preventive maintenance significantly reduces operating costs. <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">Keeping air conditioning systems running efficiently and safely depends largely on proper preventive maintenance. Small gestures, such as timely filter replacement, prevent particle accumulation, efficiency losses and high energy consumption.  <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">In practice, neglecting this routine can seriously compromise the performance of the units and accelerate component wear, leading in many cases to the need for complete replacement of the equipment. <\/p>\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p class=\"wp-block-paragraph\">OCRAMclima\u00ae supports its customers in all phases of the HVAC system life cycle: from the supply of filters to the complete replacement of equipment when the system reaches the end of its useful life due to lack of maintenance. With specialised solutions, quality materials and ongoing support, we help ensure that the air remains clean, efficient and sustainable.  <\/p>\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 is-style-fill\" id=\"manual-de-manutencao\"><a class=\"wp-block-button__link has-background has-medium-font-size has-text-align-center has-custom-font-size wp-element-button\" href=\"https:\/\/ocram-clima.com\/en\/contact-form\/\" style=\"border-radius:100px;background-color:#7bac9c\">Request detailed maintenance instructions for each equipment.<\/a><\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Air conditioning is not just a matter of comfort, it is also an essential factor in ensuring health, equipment performance and energy efficiency in commercial and industrial buildings. However, all of this depends on an often overlooked element: preventive maintenance. When performed properly, it extends the life of equipment, improves indoor air quality and reduces [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":8424,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[185],"tags":[200],"class_list":["post-8503","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-articles","tag-energy-efficiency"],"acf":[],"_links":{"self":[{"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/posts\/8503","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/comments?post=8503"}],"version-history":[{"count":0,"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/posts\/8503\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/media\/8424"}],"wp:attachment":[{"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/media?parent=8503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/categories?post=8503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ocram-clima.com\/en\/wp-json\/wp\/v2\/tags?post=8503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}