# Aircon Not Cold Repair Jurong | Aircon Servicing Jurong > Aircon not cold in Jurong? We find the cause: dirty coil, low gas or a failed part, and fix it. Repair from S$60, fixed quote, same-day slots. URL: https://airconservicingjurong.com/aircon-not-cold-repair/ ![](/images/misc/technician-holding-thermometer-probe-at-wall-airco.webp) Repair # Aircon Not Cold? Jurong Repair That Finds the Real Cause 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 and repair for Jurong homes and shops. Price told first, no callout fee, 90-day warranty. - Fixed quote first - No callout fee - 90-day warranty - Open 7 days WhatsApp for a Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20not%20cold%20repair%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%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__%20Problem%3A%20__%20Address%3A%20__) Call 9427 3833 [tel:+6594273833 →](tel:+6594273833) Not Cold Repair price From S$60 repair Final price depends on the fault. You get a fixed quote before any repair starts. See pricing details [#pricing →](#pricing) - Since 2007 Cool Earth Aircon - 4,560+ Units serviced - 90-Day Workmanship warranty - 7 Days Open every week ## Why is your aircon not cold? Is your aircon running, humming away, and still blowing lukewarm air? On a hot Jurong afternoon, that’s hard to ignore. Most **aircon not cold repair** jobs come down to one of three problems. Air isn’t passing over the coil properly, there isn’t enough refrigerant, or a part that controls cooling has failed. We find which one it is before you pay for anything. Here’s a simple benchmark we use. PICKHVAC explains that a healthy system cools the air by about 15 to 20°F (roughly 8 to 11°C) between the air going in and the air coming out. A much smaller gap tells us something is wrong. On every not-cold visit, we check: - **Airflow** from the indoor unit and the condition of the filter and **evaporator coil** - The **delta-T temperature test**, which compares the air going in with the air coming out - **Refrigerant pressure** at the outdoor **condenser unit** - The **compressor**, outdoor fan and **capacitor** - The **thermistor** sensors and the **PCB control board** Repair starts from S$60. You get a fixed quote before any work starts. ## Common causes we find in Jurong homes | Cause | Typical sign | Usual fix | | --- | --- | --- | | Dirty coil and blower | Weak airflow even on high fan | Chemical wash, from S$80 per unit | | Low refrigerant from a leak | Ice on the copper pipe, hissing sound | Leak check and gas top-up, from S$80 | | Failed capacitor, sensor or PCB | Outdoor unit not running, cold then warm | Part repair, from S$60 | ### Dirty coil and blower This is the most common cause, and the cheapest to fix. When the coil fins are packed with dust, air can’t pass through and the room never cools. Regular general aircon servicing [/ →](/) every 3 to 4 months stops it building up in the first place. If the coil is badly fouled, a chemical wash [/aircon-chemical-wash/ →](/aircon-chemical-wash/) from S$80 usually brings the cooling back. A quick clue: if airflow feels weak even on high fan, the filter or coil is the first place we look. ### Low refrigerant from a leak Refrigerant runs in a sealed loop. If the pressure is low, there’s a leak somewhere, often at a flare joint. Signs to watch for: - **Icing** on the copper pipe - A hissing sound - Cooling that fades over weeks Most newer units use **R32 refrigerant**. The aircons.sg blog notes it has replaced R410A in most new Singapore units sold since 2019. Older units use R410A or R22, and R22 has been phased out under the Montreal Protocol because it harms the ozone layer. This matters for your wallet. Topping up a leaking system without fixing the leak just means the gas escapes again, so we find the leak before any gas top-up [/aircon-gas-top-up/ →](/aircon-gas-top-up/) . ### Failed capacitor or fan If the outdoor unit hums but doesn’t start, or the fan doesn’t spin, a weak capacitor is a frequent culprit. Snowflake Aircon points out that a steady hum with no fan rotation means the motor is getting power but can’t start. A weak capacitor can look like a dead compressor, yet it costs a fraction to replace. So get it tested before agreeing to any big-ticket quote. It’s a small part and usually a quick repair. ### Sensor or control board faults A thermistor is a small temperature sensor. If it’s faulty, it can tell the unit the room is already cold, so cooling stops early. A failing PCB control board can stop the outdoor unit altogether. We test both before replacing anything. ## One room cold, another not On a **multi-split** system, each fan coil is separate. One room can be warm while the others are fine, and the cause is usually one of three things on that line: - A dirty coil - A failed sensor - A refrigerant issue We test the problem fan coil on its own. Our guide to servicing inverter multi-split systems [/guide/servicing-inverter-multi-split-aircon/ →](/guide/servicing-inverter-multi-split-aircon/) explains how these set-ups work. ## Should you wait? Not for long. A unit that isn’t cooling makes the compressor work harder for longer, and that pushes up your electricity bill. Saces estimates that aircon makes up roughly 36% of household electricity in Singapore, so a struggling unit costs you every month. If you see ice on the pipes, do this: 1. Switch the unit off at the remote or wall controller. 2. Let the ice thaw fully. 3. Book your aircon not cold repair visit. Trane advises switching a system with a frozen coil to OFF, because running it that way can cause major damage. We offer same-day slots in Jurong, subject to availability. Book a visit and we’ll sort out why your aircon isn’t cold, with a fixed quote before we touch a thing. Transparent Pricing ## How much does not cold repair cost in Jurong? Final price depends on the fault. You get a fixed quote before any repair starts. No callout fee anywhere in Jurong. Most chosen ### Repair From S$60 - Airflow and temperature check - Coil, filter and outdoor unit checks - Capacitor, thermistor and PCB checks - Fixed quote before repair Get 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__%20Problem%3A%20__%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__%20Problem%3A%20__%20Address%3A%20__) ### Gas top-up (if needed) From S$80 - R22, R410A and R32 - Leak check at joints - Pressure test before and after Get 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__%20Problem%3A%20__%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__%20Problem%3A%20__%20Address%3A%20__) ### Chemical wash (if dirt is the cause) From S$80 - Coil and blower deep cleaned - Unit stays on the wall - Airflow test after Get 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__%20Problem%3A%20__%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__%20Problem%3A%20__%20Address%3A%20__) General servicing for wall-mounted units starts at S$50 for 1 unit. See the full aircon servicing price list [/pricing/ →](/pricing/) . Why Jurong books us for not cold repair ## Why choose Aircon Servicing Jurong for not cold repair? Straight prices, plain explanations and work that is covered for 90 days. ### We find the cause first A gas top-up is not the answer to every warm aircon. We test pressure, airflow and parts before quoting, so you pay for the right fix. ### Repair from S$60 A clear starting price and a fixed quote before work. No callout fee to Jurong. ### Same-day slots Offered in Jurong, subject to availability. Booking a day ahead widens your choice. ### All common brands Inverter and non-inverter, wall-mounted, multi-split, cassette and ducted units. ### Plain explanations We tell you what failed and why, in plain words, and show you where we can. ### 90-day warranty If the same fault comes back within 90 days, we return and fix it at no extra charge. How It Works ## How does our not cold repair work? Most not-cold faults are found within the first visit. If a part has to be ordered, we tell you the price and timing first. 1. 1 ### Describe the symptom WhatsApp what happens: warm air, ice on pipes, outdoor unit silent. A short video helps. 2. 2 ### Diagnose We measure the outlet temperature (delta-T), check airflow, the coil and filters. 3. 3 ### Check the outdoor side Condenser, fan, capacitor and refrigerant pressure tested on the ledge. 4. 4 ### Fixed quote We explain the cause and give a fixed price. You decide before work starts. 5. 5 ### Fix and test Repair done, cooling tested, area cleaned. You pay after. ## Not sure if it needs servicing, a wash or a repair? Send a photo or short video of the unit on WhatsApp. We will tell you what job fits and the fixed price before anyone comes over. WhatsApp for a Quote [https://wa.me/6594273833 →](https://wa.me/6594273833) 9427 3833 [tel:+6594273833 →](tel:+6594273833) Our Work ## Not Cold Repair jobs around Jurong A look at the kind of work this job involves. Tap any photo to see it larger. ![](data:image/gif;base64,R0lGODlhAQABAAAAACw=) What Customers Say ## What customers say about our not cold repair Cool Earth Aircon holds a 4.0 Google rating from 66 reviews. Here is what customers tell us after a job. > "Living room aircon was blowing warm. They found a failed capacitor on the outdoor unit, not a gas problem. Fixed the same evening." KO Kenneth O. Toh Guan > "Only the master bedroom was not cold on our System 3. They traced it to a dirty coil and a sensor. Clear quote before starting." SN Siti N. Yunnan > "Ice on the pipe and no cooling. They found a leak at the joint, fixed it and topped up properly. Still cold three months later." BL Ben L. Jurong East Central Got Questions? ## Not Cold Repair questions from Jurong customers ### Why is my aircon running but not cold? The most common causes are a clogged filter or coil, low refrigerant from a leak, a failed capacitor or fan on the outdoor unit, or a faulty sensor or control board. We test each before quoting. ### How much does it cost to fix an aircon that is not cold? Repair starts from S$60. The final price depends on the fault and parts, and you get a fixed quote before work starts. If a gas top-up is needed, it starts from S$80. ### Do I just need a gas top-up? Sometimes, but not always. Refrigerant does not get used up, so low gas means a leak. We find and fix the leak first, otherwise the top-up will not last. ### Why is there ice on my aircon pipe? Icing usually points to low refrigerant or very poor airflow from a dirty coil or filter. Switch the unit off to let it thaw and book a check. ### Why is one room cold and the other not on my multi-split? On a multi-split, each fan coil has its own coil, sensor and valves. A dirty coil, a faulty thermistor or a refrigerant issue on one line can affect one room only. ### Can you come the same day? Same-day slots are offered in Jurong, subject to availability. Our team travels from Simei, so booking a day ahead gives you a wider choice of times. ### My outdoor unit is not running. Is it the compressor? Not always. A failed capacitor, contactor or control board can stop the outdoor unit. These are often cheaper to fix than a compressor fault. We test before quoting. ### What if the repair does not work? Every repair has a 90-day workmanship warranty. If the same fault comes back within 90 days, we return and fix it at no extra charge. ### Still have a question? Send us a photo of your unit on WhatsApp. We reply with a fixed quote. WhatsApp for a Quote [https://wa.me/6594273833 →](https://wa.me/6594273833) Helpful Guides ## Read before you book Guide ### 7 Signs Your Aircon Is Overdue for Servicing Weak airflow, dusty filters, slow cooling and a musty smell are early warnings. Check the 7 signs and which ones point to a wash or repair. [7 Signs Your Aircon Is Overdue for Servicing →](/guide/signs-aircon-overdue-for-servicing/) Guide ### Servicing Inverter Multi-Split Systems in BTO Flats and Condos How multi-split systems work, what servicing covers for each fan coil, when a new BTO needs its first deep clean, and condo access notes. [Servicing Inverter Multi-Split Systems in BTO Flats and Condos →](/guide/servicing-inverter-multi-split-aircon/) Related Services ## Other jobs that often go with this ![Technician connecting a gauge manifold to an outdoor condenser for an aircon gas top-up on an HDB ledge](/images/misc/technician-kneeling-on-hdb-aircon-ledge-connecting.webp) Leak Check Included ### Aircon Gas Top-Up Refrigerant top-up for R22, R410A and R32 systems, with leak check and pressure test. From S$80 [Aircon Gas Top-Up →](/aircon-gas-top-up/) ![Technician applying chemical cleaning solution to the coil of a wall-mounted aircon in a Jurong HDB bedroom](/images/misc/technician-on-ladder-applying-chemical-cleaning-so.webp) Deep Clean ### Aircon Chemical Wash On-wall deep clean of the coil, blower wheel and drain parts for weak cooling and mild smells. From S$80 [Aircon Chemical Wash →](/aircon-chemical-wash/) ![Technician testing an aircon control board with a multimeter during a repair in a Jurong HDB flat](/images/misc/technician-testing-aircon-indoor-unit-control-boar.webp) Same-Day Slots ### Aircon Repair Diagnosis and repair for breakdowns, including same-day urgent visits, across all common brands. From S$60 [Aircon Repair →](/aircon-repair/) ![](/images/misc/aircon-technician-packing-tools-into-bag-after-fin.webp) Same-day slots in Jurong, subject to availability ## Ready to book not cold repair in Jurong? Tell us the unit count and the problem on WhatsApp. Not Cold Repair is from s$60, with a fixed quote before we start. WhatsApp for a Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20quote%20for%20aircon%20not%20cold%20repair%20in%20Jurong.%20Units%3A%20__%20Problem%3A%20__%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__%20Problem%3A%20__%20Address%3A%20__) Call 9427 3833 [tel:+6594273833 →](tel:+6594273833) - Fixed quote before work - No callout fee - 90-day workmanship warranty