# Aircon Not Cold Repair Ang Mo Kio | Fixed Quote First > Aircon not cold in Ang Mo Kio? We find the cause (dirty coil, low gas or a failed part) and quote before fixing. Repair from S$60, no callout fee. URL: https://airconservicingangmokio.com/aircon-not-cold-repair/ Ang Mo Kio · Cool Earth Aircon # Aircon Blowing Warm Air? Not Cold Repair in Ang Mo Kio Last updated: 11 November 2026 The technician checks the coil, refrigerant pressure, outdoor unit and parts to find why the room is not cooling, then quotes the fix before work. Repair from S$60, no callout fee. - Checks coil, filters, refrigerant pressure, outdoor unit and parts - Covers cold-then-warm, ice on pipes, and one room not cold on multi-split systems - Clear outcome and price before any work - Inverter and non-inverter systems WhatsApp for a Fixed Quote [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20not%20cold%20repair%20in%20Ang%20Mo%20Kio. →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20not%20cold%20repair%20in%20Ang%20Mo%20Kio.) +65 9427 3833 [tel:+6594273833 →](tel:+6594273833) ![Technician measuring air temperature at a wall-mounted aircon vent that is blowing warm air](/images/misc/technician-holding-thermometer-at-wall-mounted-air.webp) Not Cold Repair From S$60 per repair **4.0/5** 66 Google reviews (Cool Earth Aircon) **Same-day slots** usual arrival within 90 min, subject to availability **4,560+** units serviced since 2007 **90-day** workmanship warranty ## Why Is Your Aircon Running but Not Cold? Ever stood under your wall-mounted unit, felt the fan blowing, and wondered why the room still feels warm? It’s a frustrating one, but an aircon not cold repair almost always starts with a cause you can find. The usual suspects are a dirty evaporator coil, low refrigerant pressure, an outdoor unit that has stopped working, or a failed electrical part. A 2026 troubleshooting guide from Afix points to the dirty coil as the most common cause in Singapore’s humidity. Each cause needs a different fix, and each has a different price. That’s why we find the cause before we quote. You shouldn’t pay for a gas top-up when the coil is the problem, or for a chemical wash when a capacitor has failed. Repairs start from S$60, with a fixed quote before any work begins. ![Technician checking refrigerant pressure with a manifold gauge on an outdoor aircon unit in Ang Mo Kio](/images/content/technician-reading-manifold-gauge-attached-to-outd.webp) ## How Is the Cause Found? Brian started Cool Earth Aircon in 2007 as a one-man workshop, and the order of checks we use hasn’t changed much since. We go from the simplest, cheapest cause to the most involved: 1. **Filters and coil.** Dust on the filters and grime on the coil block airflow. Billy Aircon notes that fine dust builds up into an insulating layer on the coil over 6 to 12 months, even if you clean the filters. A quick look and an airflow reading show if dirt is the problem. 2. **Airflow and vent temperature.** We measure the air coming out of the vent, so there’s a number to compare before and after. 3. **Refrigerant pressure.** A manifold gauge on the outdoor unit shows whether the system is low. R32 refrigerant and R410A refrigerant systems run at different pressures, and R32 runs at the higher one, so we check the reading against the right figure. 4. **Outdoor unit.** If the condenser unit isn’t running, or the compressor won’t start, we test its capacitor, contactor and fan. 5. **Sensors.** A faulty thermistor can tell the unit the room is already cold, so it stops cooling early. At the end, you hear which one it is, in plain words, with the price. ## What Fixes Are There? The fix depends on what the checks find. Here’s how each cause maps to a service: | What we find | The fix | | --- | --- | | Dirt on the coil | General servicing | | Dirt deep in the blower wheel | Chemical wash | | Low refrigerant | Gas top-up, with a leak check | | A failed part | Repair, with the part quoted first | Every gas top-up includes a leak check, because a sealed system only loses gas through a leak. Topping up without finding the leak just means you’ll be calling us again in a few weeks. Price matters here too. According to a 2026 guide from aircons.sg, gas top-ups in Singapore run from about S$60 to S$180 per unit, depending on the refrigerant type. Most HDB units in Ang Mo Kio are newer R32 or R410A systems, so that quote should stay on the lower side. ## Common Problems We Solve ### Blowing warm air When the indoor fan runs but the air is warm, the outdoor unit is often not doing its job. A failed capacitor or fan motor outside is a common cause, so we check it before assuming anything else. Don’t leave this one for weeks. Aircon Connection warns that a capacitor fault left alone can burn out the compressor, which turns a small repair into a big one. ### Cold for a while, then warm A unit that starts cold and then warms up may have an outdoor unit that cuts out when it overheats, a weak capacitor, or low gas. Aircon Connection lists “cold at first, warm after about 30 minutes” as a sign of a frozen evaporator or low refrigerant. We test during the warm phase, because that’s when the fault shows itself. If you can, leave the unit running and tell us roughly how long it takes to turn warm. ### Ice on the copper pipe Ice on the pipe or the coil usually means low refrigerant or very poor airflow. Switch the unit off to thaw while you wait, as running it iced up strains the compressor. Be patient with the thaw. Carrier says light frost can melt in about 1 to 3 hours, while heavy ice can take 4 to 8 hours or longer. Running the fan only (no cooling) can speed things up a little. ### One room cold, another not On a multi-split System 3 or System 4 setup, one outdoor unit feeds several rooms. If only one room is warm, we check that room’s indoor unit or line first. These systems are common in condos near Ang Mo Kio Town Centre [/areas/town-centre/ →](/areas/town-centre/) . If you have two to four separate wall-mounted units in your flat, the same logic applies: the one that’s warm tells us where to look. ## Can Weak Cooling Raise Your Bill? Yes. When airflow is blocked or refrigerant is low, the compressor runs longer to reach the temperature you set, and some units never reach it at all. That extra running time shows up on the electricity bill before you notice the room is warmer. It adds up fast. City Cooling Engineering estimates that aircon makes up 60 to 70% of a typical Singapore household’s electricity use, so a struggling unit is expensive to ignore. An older non-inverter unit that never seems to cut off is a common example. Fixing the cause usually brings both the cooling and the running time back to normal. Regular servicing every 3 to 4 months keeps the coil and filters clear, which is the simplest way to stop weak cooling from creeping back. That sits close to the quarterly schedule widely cited for Singapore homes, which SACES says is also the NEA’s guidance for residential units. ## Before You Book Two quick checks are worth doing yourself: - Make sure the remote is set to cool mode, not fan or dry. - Look at the filters. If they’re grey with dust, a clean may bring back some cooling. Our guide on cleaning filters yourself [/guide/diy-aircon-filter-cleaning-vs-technician/ →](/guide/diy-aircon-filter-cleaning-vs-technician/) shows how to do it safely. If the room is still warm, WhatsApp us with what you see. Same-day slots are available subject to availability. Pricing ## How much does not cold repair cost in Ang Mo Kio? Outcome may be servicing (S$50+), chemical wash (S$80+), gas top-up (S$80+) or part repair (S$60+). Quoted before work. ### Servicing When dusty filters and a dirty coil are the cause. From S$50 for 1 unit - Filter and coil clean - Drain line flush - Airflow and temperature test ### Chemical Wash When the coil and blower wheel are coated deep inside. From S$80 per unit - Coil and blower wheel washed - Drain parts flushed - Tested after Recommended ### Gas Top-Up When refrigerant pressure is low. From S$80 per system - Leak check - Pressure test - R22, R410A and R32 ### Part Repair When a capacitor, sensor or fan has failed. From S$60 per repair - Fault confirmed with readings - Part quoted before work - 90-day workmanship warranty Fixed quote before work · No callout fee · Pay after the job · 90-day workmanship warranty. See the full price list [/pricing/ →](/pricing/) Why choose us ## Why choose Aircon Servicing Ang Mo Kio for not cold repair? ### Cause first, price second No guessing and no automatic gas top-up. You hear what is wrong before anything is fixed. ### No callout fee A fixed quote before work, and payment only after the job. ### Multi-split experience System 2, 3 and 4 setups, common in condos and newer flats near AMK Hub, are checked room by room. ### Same-day slots Subject to availability, with technicians travelling from Simei by the CTE. ### 90-day warranty If the same fault returns within 90 days, the team comes back and fixes it at no extra charge. Process ## How does our not cold repair work? 1. 1 ### Tell us what you feel WhatsApp whether the air is warm, cold then warm, or only one room is affected, plus your Ang Mo Kio address. 2. 2 ### Book a slot Same-day slots are offered subject to availability, with usual arrival within 90 minutes. 3. 3 ### Find the cause Filters, coil, airflow, refrigerant pressure, the outdoor unit and electrical parts are checked in order. 4. 4 ### Quote and fix You hear the cause and the price, then the fix is done once you agree. 5. 5 ### Confirm the cooling The vent temperature is tested again before the technician leaves. You pay after the job. Our work ## Not Cold Repair jobs in Ang Mo Kio Tap a photo to see it larger. Reviews ## What customers say Cool Earth Aircon holds a 4.0 Google rating from 66 reviews. 4.0/5on Google > "Three units in our Teck Ghee flat, done in one evening after work. The price on WhatsApp was the price I paid." MMei Ling T.Teck Ghee > "The bedroom unit smelled sour for months. After the overhaul the smell is gone and it cools properly again. He showed me the sludge in the drain pan." RRavi K.Cheng San > "Water was dripping onto the bed. They came the same afternoon, cleared the drain line and tested it before leaving." JJason L.Kebun Bahru FAQ ## Not Cold Repair FAQs ### Why is my aircon not cold? The most common causes are dirt, low refrigerant and failed parts. Dusty filters and a coated evaporator coil block airflow, so the room cools slowly even though the unit runs. Low refrigerant, usually from a small leak, gives weak cooling that gets worse over months and can leave ice on the copper pipe. A failed capacitor or fan in the outdoor condenser unit means the compressor stops working, so the indoor unit only blows room-temperature air. A faulty thermistor can also make the unit think the room is already cold. The technician checks these in order, starting with the simplest, and gives you a fixed quote for the fix before any work. ### How much does it cost to fix an aircon that is not cold? It depends on the cause, and you get a fixed quote before any work. If dirt is the problem, general servicing starts from S$50 for 1 unit and a chemical wash from S$80 per unit. If refrigerant is low, a gas top-up starts from S$80 and includes a leak check and pressure test. If a part has failed, repairs start from S$60, with any part quoted up front. There is no callout fee and you pay after the job. Because the technician finds the cause first, you do not pay for a top-up when the real problem is a dirty coil, or for a wash when a capacitor has failed. ### Why is only one room not cold on my multi-split system? On a multi-split system, several indoor units share one outdoor unit. When one room is warm and the others are fine, the fault usually sits with that room's indoor unit: a dirty coil, a blocked filter, a faulty sensor or a problem with its refrigerant line or valve. When every room is weak, the shared outdoor unit or the overall refrigerant charge is more likely. Multi-split setups such as System 3 and System 4 are common in condos and newer flats near AMK Hub and Ang Mo Kio MRT. The technician checks each indoor unit and the outdoor unit, compares readings across rooms, and quotes the fix before starting. ### Why is there ice on my aircon pipe? Ice on the copper pipe usually means low refrigerant or very poor airflow over the 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 at first, then turns warm. Why? This often points to the outdoor unit cutting out, for example a weak capacitor or an overheating condenser, or a sensor fault. It can also be low refrigerant. The technician tests each in turn. ### Do I just need a gas top-up? Not always. Many units that feel warm only need a clean. Refrigerant pressure is measured before any top-up, and every top-up includes a leak check. ### Do you fix inverter aircon that is not cold? Yes. Inverter and non-inverter systems from all common brands are checked, including units running on R32 and R410A refrigerant. ### Can you come today? Same-day slots are available in Ang Mo Kio subject to availability. Technicians usually arrive within 90 minutes of a confirmed booking. ### Is the repair covered by warranty? Yes. All work carries a 90-day workmanship warranty. If the same fault returns within 90 days, it is fixed at no extra charge. Related guides ## Read before you book ![Close view of a dusty aircon filter pulled from a wall-mounted unit in an HDB bedroom](/images/featured/close-view-of-a-dusty-aircon-filter-pulled-from-a-.webp) Guide · 4 min read ### Signs Your Aircon Needs Servicing Weak airflow, dusty filters, slow cooling or a light musty smell? The signs your aircon is due for servicing, and when it needs more than that. Read guide [Signs Your Aircon Needs Servicing →](/guide/signs-your-aircon-needs-servicing/) ![Person rinsing an aircon filter in a kitchen sink in a Singapore flat](/images/featured/person-rinsing-a-dusty-aircon-filter-under-running.webp) Decision guide · 4 min read ### Cleaning Aircon Filters Yourself vs Calling a Technician How to clean aircon filters safely between visits, what DIY cannot reach (coil, blower, drain line) and when to book a technician. Read guide [Cleaning Aircon Filters Yourself vs Calling a Technician →](/guide/diy-aircon-filter-cleaning-vs-technician/) Related services ## You might also need ![Manifold gauge dials reading refrigerant pressure beside an outdoor aircon unit](/images/cards/close-view-of-blue-and-red-manifold-gauge-dials-re.webp) ### Aircon Gas Top-Up Refrigerant top-up for R22, R410A and R32 systems, with a leak check and pressure test. From S$80 Details [Aircon Gas Top-Up →](/aircon-gas-top-up/) ![Aircon fins being rinsed during a chemical wash in a Singapore flat](/images/cards/close-view-of-mouldy-aircon-fins-being-rinsed-with.webp) Deep clean on the wall ### Aircon Chemical Wash On-the-wall deep clean of the evaporator coil, blower wheel and drain parts for units that still cool poorly or smell after normal servicing. From S$80 Details [Aircon Chemical Wash →](/chemical-wash/) ![Technician checking an outdoor condenser unit on an HDB aircon ledge](/images/cards/technician-kneeling-beside-outdoor-condenser-unit-.webp) ### Aircon Repair Diagnosis and repair of aircon faults, including same-day emergency visits. All common brands, inverter and non-inverter. From S$60 Details [Aircon Repair →](/repair/) Same-day slots, subject to availability ## Ready to book not cold repair? Send the number of units and your Ang Mo Kio address. You get a fixed price for aircon not cold repair before any work starts. Direct WhatsApp +65 9427 3833 [https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20servicing%20in%20Ang%20Mo%20Kio. →](https://wa.me/6594273833?text=Hi%2C%20I'd%20like%20a%20fixed%20quote%20for%20aircon%20servicing%20in%20Ang%20Mo%20Kio.) Call us +65 9427 3833 · Office +65 6810 6706 [tel:+6594273833 →](tel:+6594273833) Open 7 days Mon to Sat 9 AM to 9 PM · Sun 9 AM to 8 PM ### Quick quote request