{"id":1104,"date":"2022-05-23T11:00:43","date_gmt":"2022-05-23T15:00:43","guid":{"rendered":"https:\/\/www.advantageairtechltd.com\/blog\/?p=1104"},"modified":"2026-03-25T11:12:27","modified_gmt":"2026-03-25T15:12:27","slug":"common-repair-issues-commercial-ac-systems","status":"publish","type":"post","link":"https:\/\/www.advantageairtechltd.com\/blog\/commercial-air-conditioning\/common-repair-issues-commercial-ac-systems\/","title":{"rendered":"Common Repair Issues for Commercial AC Systems"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignright\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.advantageairtechltd.com\/blog\/wp-content\/uploads\/2018\/06\/commercia-hvac-fans-in-rotation-300x225.jpg\" alt=\"commercial-hvac-fans-in-rotation\" class=\"wp-image-567\" srcset=\"https:\/\/www.advantageairtechltd.com\/blog\/wp-content\/uploads\/2018\/06\/commercia-hvac-fans-in-rotation-300x225.jpg 300w, https:\/\/www.advantageairtechltd.com\/blog\/wp-content\/uploads\/2018\/06\/commercia-hvac-fans-in-rotation-768x577.jpg 768w, https:\/\/www.advantageairtechltd.com\/blog\/wp-content\/uploads\/2018\/06\/commercia-hvac-fans-in-rotation.jpg 799w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure><\/div>\n\n\n<p><span style=\"font-weight: 400;\">Commercial air conditioning systems consume a great amount of energy. Compared to the standard residential AC systems, a commercial system costs 150% to 200% more to run on average, and that doesn\u2019t account for how much <\/span><i><span style=\"font-weight: 400;\">longer<\/span><\/i><span style=\"font-weight: 400;\"> these systems must run. This extra labor puts commercial air conditioning systems in danger of abrupt malfunctions that can lead to massive energy waste and expensive interruptions in operation, especially if the system doesn\u2019t receive regular professional maintenance<\/span>\u00a0and runs into<a href=\"https:\/\/www.advantageairtechltd.com\/blog\/commercial-air-conditioning\/common-summer-commercial-hvac-problems-we-often-fix\/\"> unexpected commercial AC performance issues<\/a>.<\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Even with maintenance, you can expect to encounter air conditioning troubles at some point. We\u2019re ready to help with the service necessary to get you back to work. To help you identify service needs, we\u2019ve listed several common repair concerns you may have with your commercial cooling system.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What Are the Most Common Commercial AC Repair Issues?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Frozen evaporator coils<\/li>\n\n\n\n<li>Dirty condenser coils<\/li>\n\n\n\n<li>Thermostat malfunctions<\/li>\n\n\n\n<li>Refrigerant leaks<\/li>\n\n\n\n<li>Electrical failures<\/li>\n\n\n\n<li>Blower fan problems<\/li>\n\n\n\n<li>Compressor damage<\/li>\n<\/ul>\n\n\n\n<p>These are some of the most common problems that lead to commercial AC repairs. Catching them early can help reduce downtime, prevent larger system failures, and control repair costs.<\/p>\n\n\n\n<!--more-->\n\n\n\n<h3 class=\"wp-block-heading\"><b>Frozen evaporator coils<\/b><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Ice should never appear along the evaporator coil. This isn\u2019t a sign the AC is working exceptionally well, but that something is causing the coil to absorb less heat than normal. Clogged air filters are often at fault, which is why routine maintenance is so important. Low refrigerant levels are another cause, and we\u2019ll talk about these leaks more below as they warrant their own listing.&nbsp;<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><b>Dirty condenser coils<\/b><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">The condenser coils can collect dust and debris from outdoors, and when this occurs, the efficiency of the air conditioning system will decline because the unit cannot effectively exhaust heat to the outdoors.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><b>Thermostat malfunctions<\/b><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Commercial facilities often have a network of different thermostats to manage zones and deliver separate levels of cooling to specific areas. If one or more thermostats become miscalibrated or lose connection to the HVAC system, it can cause numerous efficiency and performance problems. Fortunately, they are basic fixes for our technicians.&nbsp;<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><b>Refrigerant leaks<\/b><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Leaks in refrigerant lines often occur in older equipment. These leaks put the AC in jeopardy because the system is designed to work at a specific charge and pressure of refrigerant. Without repairs to seal the leaks and recharge the system, it will eventually suffer a catastrophic breakdown<\/span>, making<a href=\"https:\/\/www.advantageairtechltd.com\/blog\/commercial-air-conditioning\/refrigerant-leaks-commercial-ac-equipment\/\"> serious commercial AC refrigerant concerns<\/a> especially critical to address.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><b>Tripped breakers\/blown fuses<\/b><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">Has your commercial air conditioning system started to trip circuit breakers or blow fuses? Please don\u2019t ignore this and just reset the breakers or replace the fuses. Something is causing the AC to overload its circuits, and you\u2019ll want experts to look into it.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><b>Nonstop blower<\/b><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">If you have the thermostat in the \u201cauto\u201d position but the blower fan for the HVAC system won\u2019t shut off, you\u2019ll need to have professionals see if the blower fan has become stuck or lost its connection to the thermostat.&nbsp;<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><b>Compressor trouble<\/b><\/h3>\n\n\n\n<p><span style=\"font-weight: 400;\">The compressor is the core of an air conditioning system and draws on the most power to operate. A compressor is in serious trouble if refrigerant levels drop\u2014it will eventually overheat and burn out. Compressors can also become \u201ctight\u201d and drain extra power to start up. Watch for strange sounds from the compressor as well as temperature fluctuations in your facility\u2014these are clear<a href=\"https:\/\/www.advantageairtechltd.com\/blog\/commercial-indoor-air-quality\/signs-failing-compressor-commercial-hvac-equipment\/\"> warning signs of commercial compressor failure<\/a> that need immediate expert attention.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Call us for <\/span><a href=\"\/commercial-air-conditioning\/repair\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"font-weight: 400;\">commercial air conditioning repair in Pickering, ON<\/span><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Frequently Asked Questions<\/strong><\/h2>\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 are the most common repair issues in commercial AC systems?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Common commercial AC repair issues include frozen evaporator coils, dirty condenser coils, thermostat malfunctions, refrigerant leaks, tripped breakers, nonstop blower operation, and compressor trouble. These problems can reduce cooling performance, waste energy, and lead to costly interruptions if they are not diagnosed and repaired promptly.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What causes evaporator coils to freeze in a commercial AC system?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Frozen evaporator coils usually mean the system is not absorbing heat properly. On this page, clogged air filters and low refrigerant levels are identified as two common causes. When coils freeze, cooling performance drops, and the issue can worsen if the underlying airflow or refrigerant problem is left unresolved.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why are refrigerant leaks a serious problem for commercial air conditioners?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Refrigerant leaks are serious because commercial AC systems are designed to run at a specific charge and pressure. When refrigerant levels drop, cooling becomes less reliable and system components can be damaged. If leaks are not sealed and the system is not recharged, it can eventually lead to a major breakdown.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can thermostat problems affect cooling in different parts of a building?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, thermostat issues can affect comfort and efficiency across multiple zones in a commercial building. The article explains that facilities often rely on several thermostats to manage separate areas. If one becomes miscalibrated or loses connection, it can create uneven cooling and broader system performance problems.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the warning signs of compressor trouble in a commercial AC system?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Warning signs of compressor trouble include strange sounds, temperature fluctuations, overheating, and difficulty starting up. Because the compressor is a core part of the air conditioning system, problems can quickly become serious. Low refrigerant levels can also put the compressor at risk and increase the chance of a full system failure.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n\n\n\n<p><strong>Question: What are the most common repair issues in commercial AC systems?<\/strong><strong><br><\/strong><strong>Answer:<\/strong> Common commercial AC repair issues include frozen evaporator coils, dirty condenser coils, thermostat malfunctions, refrigerant leaks, tripped breakers, nonstop blower operation, and compressor trouble. These problems can reduce cooling performance, waste energy, and lead to costly interruptions if they are not diagnosed and repaired promptly.<\/p>\n\n\n\n<p><strong>Question: What causes evaporator coils to freeze in a commercial AC system?<\/strong><strong><br><\/strong><strong>Answer:<\/strong> Frozen evaporator coils usually mean the system is not absorbing heat properly. On this page, clogged air filters and low refrigerant levels are identified as two common causes. When coils freeze, cooling performance drops, and the issue can worsen if the underlying airflow or refrigerant problem is left unresolved.<\/p>\n\n\n\n<p><strong>Question: Why are refrigerant leaks a serious problem for commercial air conditioners?<\/strong><strong><br><\/strong><strong>Answer:<\/strong> Refrigerant leaks are serious because commercial AC systems are designed to run at a specific charge and pressure. When refrigerant levels drop, cooling becomes less reliable and system components can be damaged. If leaks are not sealed and the system is not recharged, it can eventually lead to a major breakdown.<\/p>\n\n\n\n<p><strong>Question: Can thermostat problems affect cooling in different parts of a building?<br>Answer:<\/strong> Yes, thermostat issues can affect comfort and efficiency across multiple zones in a commercial building. The article explains that facilities often rely on several thermostats to manage separate areas. If one becomes miscalibrated or loses connection, it can create uneven cooling and broader system performance problems.<\/p>\n\n\n\n<p><strong>Question: What are the warning signs of compressor trouble in a commercial AC system?<br>Answer:<\/strong> Warning signs of compressor trouble include strange sounds, temperature fluctuations, overheating, and difficulty starting up. Because the compressor is a core part of the air conditioning system, problems can quickly become serious. Low refrigerant levels can also put the compressor at risk and increase the chance of a full system failure.<\/p>\n\n\n\n<p class=\"has-text-align-center\"><b>Advantage Airtech Commercial Ltd. is the Double \u201cA\u201d Name with the Triple \u201cA\u201d Rating. <\/b><a href=\"\/contact-us\/schedule-commercial-hvac-service\" target=\"_blank\" rel=\"noopener noreferrer\"><b>Call us 24\/7 for emergency repair service.<\/b><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Even with maintenance, you can expect to encounter air conditioning troubles at some point.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87],"tags":[112,135],"class_list":["post-1104","post","type-post","status-publish","format-standard","hentry","category-commercial-air-conditioning","tag-commercial-air-conditioning-repair","tag-pickering"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/posts\/1104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/comments?post=1104"}],"version-history":[{"count":4,"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/posts\/1104\/revisions"}],"predecessor-version":[{"id":1465,"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/posts\/1104\/revisions\/1465"}],"wp:attachment":[{"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/media?parent=1104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/categories?post=1104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.advantageairtechltd.com\/blog\/wp-json\/wp\/v2\/tags?post=1104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}