# Aircon Not Cold Jurong | Aircon Servicing Jurong > Aircon not cold in Jurong? We check for dirty coils, low refrigerant or a failed part and fix the cause. Repair from S$60, fixed quote first, 90-day warranty. URL: https://airconservicingjurong.com/aircon-not-cold-repair/ Jurong service of Cool Earth Aircon # Aircon Not Cold? We Find and Fix the Cause in Jurong Last updated: 12 November 2026 Finds and fixes the cause of weak or warm air: dirty coils, low refrigerant or a failed part. Fixed-price aircon servicing for Jurong homes and shops: no callout fee, a published price list and a 90-day workmanship warranty. - Fixed quote first - No callout fee - 90-day warranty - Open 7 days WhatsApp for a Fixed Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20not%20cold%20repair%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20not%20cold%20repair%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) View Pricing [#pricing →](#pricing) Or call +65 9427 3833 [tel:+6594273833 →](tel:+6594273833) . Same-day slots, subject to availability. ![Technician measuring air temperature at an aircon vent](/images/misc/technician-holding-a-digital-thermometer-at-the-ve.webp) From S$60 per repair 2007 Serving Singapore since 4,560+ Units serviced 90-Day Workmanship warranty 4.0/5 66 Google reviews Rating from Google (Cool Earth Aircon profile). Fixed quote before work, no callout fee, open 7 days. The service ## What Is Aircon Not Cold Repair? If your aircon runs but the room will not cool, the cause is usually one of three things: a dirty coil or filter, low refrigerant from a leak, or a failed part such as a capacitor, fan motor or sensor. Our technician diagnoses first, explains what is wrong and gives a fixed quote before starting. Common signs include warm air, cooling that fades after a while, an outdoor unit that is not running, ice on the pipes, or one room cold while another is not on a multi-split system. Repairs start from S$60. ### What's included - Airflow and temperature test - Coil, filter and drain check - Refrigerant pressure and leak check - Capacitor, fan motor and sensor testing - Fixed quote before repair; 90-day warranty ![Refrigerant pressure check on an outdoor condenser](/images/content/manifold-gauges-connected-to-the-service-valve-of-.webp) Is your aircon running but only blowing lukewarm air? It’s a miserable feeling in a Jurong West or Jurong East flat, especially when the bedroom unit is the one that gives up at night. Our team at Aircon Servicing Jurong [/ →](/) is the local arm of Cool Earth Aircon, which Brian started in 2007 as a one-man workshop. Most **aircon not cold repair** calls we get from HDB owners turn out to be simple, and some cost very little to fix. Here’s how we sort out what’s wrong, so you know what to expect before anyone touches your unit. ## Three Common Reasons an Aircon Stops Cooling ### 1\. Dirty filter or coil This is the most common cause and the cheapest to fix. Dust on the filter and **evaporator coil** blocks **airflow**, so the unit can’t pull heat out of the room. You may notice weak air from the vents and a room that takes ages to cool. Some units also smell dusty or musty when they start. You can wash filters at home. Helpling’s haze guide suggests checking them every one to two weeks when the air outside is bad, and other Singapore servicing guides suggest a wash every two to three weeks in normal use. A coated coil is a different story, and it needs a chemical wash [/aircon-chemical-wash/ →](/aircon-chemical-wash/) . ### 2\. Low refrigerant Refrigerant doesn’t get used up. If a unit is low on **R410A refrigerant** or **R32 refrigerant**, it has a leak somewhere, often at a flare joint. Mitsubishi Electric Singapore says low refrigerant can come from an installation undercharge or a leak. Adding gas alone won’t cure a leak, so the leak has to be found and repaired. Watch for these signs: - Cooling that fades over weeks or months - A hissing sound from the indoor unit or pipes - **Ice on coil** or on the copper pipe - A unit that needs gas every year or two That last one is a giveaway. According to aircons.sg, R32 has been the standard in most new Singapore units since 2019, and a unit that needs gas every one to two years usually leaks at its flare joints, valves or corroded copper piping. You also can’t swap one gas for the other. A unit built for R410A can’t simply be switched to R32, so the fix is always to find the leak and repair it. A gas top-up [/aircon-gas-top-up/ →](/aircon-gas-top-up/) with a leak check fixes it properly. ### 3\. A failed part A weak **capacitor** can stop the **compressor** or fan from starting. A faulty **thermistor** can tell the unit the room is already cold. A worn fan motor moves too little air. Capacitors catch a lot of owners out. Snowflake Aircon Services documented a Jurong West outdoor unit that buzzed, clicked and cut out, which sounded like a dead compressor. The cause was a small capacitor, which costs far less to replace. That’s why we test before we replace anything. A part swap only makes sense once the readings point to it. ## How We Diagnose a Warm Aircon We start with a **delta-T temperature check**. We measure the air going into the indoor unit and the air coming out. A healthy unit shows a clear drop. Air-conditioning guides commonly cite 15 to 20°F (roughly 8 to 11°C) as a good range. A small drop tells us something is wrong and points us in the right direction. From there, we check: - Filters and coil condition - Drain pan and line, since a blocked drain can trip some units - Refrigerant pressure at the **condenser unit** on the ledge - Capacitor, fan motor and contactor readings - Sensors and error codes on the PCB Only then do you get a quote. We won’t top up gas on a unit that simply needs cleaning. ## Symptoms and Likely Causes Find your symptom in the table below to get a rough idea of the cause. It’s a starting point, not a verdict, because several faults can look alike. | What you notice | Most likely cause | What to do first | | --- | --- | --- | | Weak airflow, dusty smell | Dirty filter or coil | Wash the filters | | Cooling fades over months | Slow refrigerant leak | Book a leak check | | Ice on the pipe or coil | Low refrigerant or blocked airflow | Switch off and let it thaw | | Outdoor unit silent | Capacitor, contactor or wiring | Switch off and call us | | Cold, then warm, then cold | Thermistor or compressor overheating | Note when it happens and tell us | | One room cold, one warm | Fault on one branch of a multi-split system | Tell us which room is affected | Ice deserves a closer look. Carrier’s HVAC guidance says a frozen coil won’t fix itself. Turn the system off to let it thaw, then deal with the root cause, usually restricted airflow or a refrigerant leak. ## What You Can Check Before Calling A few quick checks can save you a visit. Run through these first: 1. Make sure the remote is on cool mode, not fan or dry. 2. Check the set temperature. Some Singapore servicing guides suggest 25°C, since 18 to 20°C makes the compressor work much harder. 3. Wash the filters if they look grey. 4. If you see ice, switch the unit off. If the unit still blows warm air, WhatsApp us with your block, your unit’s brand and a quick photo or video. We’ll tell you whether it sounds like a clean, a gas leak check or a part test. Our guide on cleaning filters yourself [/guide/clean-aircon-filter-yourself-vs-technician/ →](/guide/clean-aircon-filter-yourself-vs-technician/) shows what’s safe to do at home. Anything past the filter, such as the coil, the gas or the outdoor unit, is best left to us. Message us today and we’ll sort out your aircon not cold repair with a proper diagnosis first. Transparent pricing ## How Much Does Not Cold Repair Cost in Jurong? Fixed quote after diagnosis. Gas top-up from S$80 if needed. ### No callout fee The technician checks the unit and confirms the work and price before starting. If you decide not to go ahead, you do not pay for the visit. Not Cold Repair Price From S$60 per repair - Airflow and temperature test - Coil, filter and drain check - Refrigerant pressure and leak check Get My Fixed Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20not%20cold%20repair%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20not%20cold%20repair%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) ### 90-day warranty If the same fault comes back within 90 days, we return and fix it at no extra charge. Payment is made after the job is done. See every published price on our aircon servicing price list [/pricing/ →](/pricing/) . Why choose us ## Why Choose Aircon Servicing Jurong for Not Cold Repair? ### Diagnosis, not guesswork We do not top up gas just because a unit is warm. We find the real cause first. ### No callout fee Diagnosis visits in Jurong have no transport charge. ### Multi-split know-how One room cold and another not? We trace faults across System 2, 3 and 4 setups. ### Same-day slots Offered subject to availability. Evenings and Sundays included. ### 90-day warranty If the same cooling fault returns within 90 days, we fix it free. ### Plain explanations We explain the fault in simple words so you know what you are paying for. ## Not sure what your aircon needs? Describe the problem on WhatsApp. We will tell you if it is servicing, a chemical wash or a repair, and what it costs. WhatsApp Us [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20servicing%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20servicing%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) +65 9427 3833 [tel:+6594273833 →](tel:+6594273833) The process ## How Does Our Not Cold Repair Work? 1. 01 ### Tell us the symptom Warm air, fading cooling, ice on pipes, outdoor unit silent? WhatsApp what you see. 2. 02 ### Temperature and airflow test We measure air temperature and flow at the vents to see how far off the unit is. 3. 03 ### Find the cause Filters, coil, refrigerant pressure, capacitor, fan motor and sensors are checked in turn. 4. 04 ### Fix with your go-ahead You get the cause and a fixed quote. We repair only what you approve, then retest. You get a time estimate with your quote. Payment is made after the job. On the job ## Our Not Cold Repair Work Photos from jobs like yours. Tap any photo to see it larger. Reviews ## What Customers Say About Our Not Cold Repair Cool Earth Aircon holds a 4.0 star Google rating from 66 reviews, built on 4,560+ units serviced since 2007. 4.0 / 5 66 Google reviews > "Our bedroom unit smelled musty for months. After the chemical wash the smell is gone and it cools properly again." D Daniel L. Yuhua > "Got the price on WhatsApp before they came. Three units serviced in our Jurong West flat, they cleaned up after and tested each one." M Mdm Tan Jurong West > "Old unit in Taman Jurong kept leaking. They did an overhaul, showed us the sludge in the drain pan, and it has been dry since." M Mr Rahman Taman Jurong Sample reviews shown for layout. Replace with real Google reviews before launch. Got questions? ## Not Cold Repair FAQs ### Why is my aircon running but not cold? The three common causes are a dirty coil or filter blocking airflow, low refrigerant from a leak, or a failed part such as a capacitor, fan motor or temperature sensor. A diagnosis finds which one. ### How much does it cost to fix an aircon that is not cold? Repairs start from S$60. If the unit needs gas, a top-up starts from S$80 including a leak check. If it needs a deep clean, a chemical wash starts from S$80 per unit. You get a fixed quote first. ### Why is there ice on my aircon pipe? Ice usually means low refrigerant or very poor airflow over a dirty coil. Switch the unit off to let it thaw and book a check. Running it iced up can strain the compressor. ### My aircon is cold for a while and then blows warm air. Why? This often points to a weak capacitor, an overheating compressor or a faulty thermistor reading the room wrongly. It can also be a dirty condenser outdoors. We test each part to find out. ### The outdoor unit is not running. What is wrong? Common causes are a failed capacitor, a worn contactor or a wiring fault. Sometimes the outdoor fan runs but the compressor does not. We check the outdoor unit on the ledge. ### One room is cold but the other is not. Can you fix it? Yes. On a multi-split system, one cold room and one warm room often points to a dirty indoor coil, a blocked valve or a sensor problem on that branch. We check the indoor unit and its piping. ### Does my aircon just need gas? Not always. Refrigerant does not get used up, so low gas means a leak. We check pressure and look for the leak before recommending a top-up. ### Is there a warranty? Yes. All work carries a 90-day workmanship warranty. ### Still have a question? Send us a WhatsApp with your units and the problem. We reply with a fixed quote. Chat on WhatsApp [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20servicing%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20servicing%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) Read before you book ## Related Guides All guides [/guide/ →](/guide/) ![Person rinsing an aircon filter in a kitchen sink](/images/featured/person-rinsing-a-dusty-aircon-filter-under-running.webp) Decision guide ### Cleaning Aircon Filters Yourself vs Calling a Technician What is safe to clean between visits, what only a technician can reach, and when DIY is no longer enough. [Cleaning Aircon Filters Yourself vs Calling a Technician →](/guide/clean-aircon-filter-yourself-vs-technician/) ![Technician flushing an aircon drain line in an HDB flat](/images/featured/technician-flushing-an-aircon-drain-line-with-a-ha.webp) Decision guide ### What Happens During General Aircon Servicing: The Full Checklist Filter, coil, drain flush, pressure check and more: every step of general servicing, and how long it takes per unit. [What Happens During General Aircon Servicing: The Full Checklist →](/guide/general-aircon-servicing-checklist/) ## Related Services ### Aircon Gas Top-Up Refrigerant top-up for R22, R410A and R32 systems, with leak check and pressure test. Learn more [Aircon Gas Top-Up →](/aircon-gas-top-up/) ### Aircon Chemical Wash Deep clean of the coil, blower wheel and drain parts with the unit left on the wall. For weak cooling or mild smells. Learn more [Aircon Chemical Wash →](/aircon-chemical-wash/) ### Aircon Repair Diagnosis and repair of breakdowns and faults, with same-day emergency slots subject to availability. Learn more [Aircon Repair →](/aircon-repair/) ### High Aircon Electricity Bill Diagnosis Checks why a unit is using more power than it should. Learn more [High Aircon Electricity Bill Diagnosis →](/high-aircon-electricity-bill/) Open 7 days - same-day slots, subject to availability ## Ready to Book Not Cold Repair? Tell us how many units you have, the problem and your Jurong address. We reply with a price before anyone picks up a tool. Direct line and WhatsApp +65 9427 3833 [tel:+6594273833 →](tel:+6594273833) Open 7 days Mon-Sat to 9:00 PM, Sun to 8:00 PM Office (no Jurong branch) Block 108, 108 Simei Street 1, Singapore 520108 ### Your quote in three steps 1. 1 Send units, problem and address on WhatsApp 2. 2 Get a fixed quote and pick a time slot 3. 3 Pay after the job. 90-day warranty starts WhatsApp for a Fixed Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20not%20cold%20repair%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__ →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20not%20cold%20repair%20in%20Jurong.%20Units%3A%20__%2C%20problem%3A%20__%2C%20address%3A%20__) - No callout fee - Price first - 90-day warranty