The outside AC unit making a loud noise and the fan not spinning is likely a sign of a faulty fan motor. This issue can be caused by a number of reasons, such as a malfunctioning capacitor or a worn-out motor. It is important to turn off the AC unit and contact a professional HVAC technician to diagnose and repair the problem to avoid further damage.

Is your outside AC unit making a loud noise and the fan isn’t spinning? It’s a frustrating situation that no homeowner or renter wants to face, especially during the sweltering summer months when a malfunctioning air conditioning system can quickly turn your home into a sauna. But fear not, because help is on the way! In this blog article, we will delve into the common problem of an outside AC unit making a loud noise and the fan not spinning.

Whether you’re a seasoned DIY enthusiast or someone with basic knowledge of how an AC unit works, this article is designed to provide you with the troubleshooting steps and repair solutions you need to restore the functionality of your AC system. We will explore the potential causes of the noise and fan issue, ranging from simple maintenance tasks to more complex mechanical problems.

From dirty condenser coils to faulty capacitors, we’ll cover it all. Not only will we guide you through the diagnostic process, but we’ll also share expert tips to ensure a safe and successful resolution. So, if you’re tired of the noise coming from your outside AC unit and frustrated with the fan’s refusal to spin, sit back, relax, and let us help you regain control over your indoor climate.

By the end of this article, you’ll be equipped with the knowledge and confidence to troubleshoot, repair, and maintain your AC system like a pro. Don’t let a malfunctioning AC system rob you of your comfort and peace of mind. Let’s dive in and get your outside AC unit back on track!

Table of Contents

Bestseller No. 1

SereneLife Portable Air Conditioner, 14000 BTU (ASHRAE) Compact Home A/C Cooling Unit with Built-in Dehumidifier and Fan Modes, Energy Efficient 400 Sq. Ft. Coverage, Includes Window Mount Kit (White)

VERSATILE 3 IN 1 OPERATION – With three operation modes: AC Cooling, Dehumidifier and Fan, this standing portable AC adapts to your needs. Enjoy hassle-free setup and wide-area climate control for spaces up to 400 square feet.
POWERFUL COOLING – Stay cool and comfortable with our 14000 BTU Portable A/C unit. Its powerful rotary compressor ensures rapid cooling, while the Metal Control Box guarantees safety, preventing fire and explosions.
PORTABLE CONVENIENCE – Move freely with universal castors and lightweight design. Our compact portable AC is perfect for bedrooms, offices, and more. The included window mount kit ensures easy installation and removal.
TECHNICAL DETAILS – Made from durable High Impact Polystyrene (HIPS), this portable AC unit operates at 115V with a power output of 1255W. Its self-evaporative system reduces drainage needs and refrigerant type R32 ensures energy efficiency.
EFFICIENT PERFORMANCE – With low noise level motor and energy-efficient performance, this portable AC for bedroom provides effective cooling without disturbing your peace. Enjoy adjustable settings and remote control convenience.

Bestseller No. 2

Pangda Air Conditioner Compressor Sound Blanket 10 x 10 x 19 Inches Heavy Duty Gray Ac Compressor Sound Blanket for Insulation Noise Reduction and Protection from Rain

Package Inclusion: each package includes 1 sound blanket for air conditioner in 2 pieces of wrappers, coming in gray color, the air conditioner sound reducer can be applied for various scroll and reciprocating compressors; The maximum size of the compressor it will fit is about 10 x 10 x 19 inches,ensuring a better noise reduction effect and maintain a serene and peaceful environment
Ideal Fit: measuring about 18.9 x 9.84 x 9.84 inches/ 48 x 25 x 25 cm when it’s installed, the compressor sound blanket is suitable for a wide range of conditioner compressors; The size of its top wrapper is about 29.5 x 29.5 inches, and the surrounding wrapper is about 44 x 11.5 inches; Thus, it’s easy to wrap the machines
Quality Material: the compressor sound blanket is made of quality leather and sound insulation cotton; Such material can reduce more noise of the air conditioner compressor than other material
Avoid obstructing air circulation:When installing, try to choose an air conditioner installation location with enough space around and no vegetation or other obstacles blocking it; Make sure the sound insulation blanket is not too tight or blocking the vents; At the same time, regularly maintain the air conditioner, check the refrigerant level, fan and clean the coil; , avoid blocking heat dissipation and causing overheating
Significant Noise Reduction: the air conditioner noise reducer boast soundproof feature; For better noise reduction, the noise reducer blanket need to be installed inside the cabinet and cover around the compressor

Bestseller No. 3

Wintcomfort Air Conditioner Drip Cushion, Stop Dropping Noise AC Rain Cover with Magnetic Backing

【No More Noise】 – The drip cushion is designed to absorb the noise of the water dripping on the air conditioner outside case, and prevent the dripping water from entering the window unit
【Universal Fit】 – The drip cushion of big size universal to fit most ac units, will not affect the operation while the air conditioner is running
【Strong Magnetic Backing】The Foam cushion is built with a magnetic backing, which helps fixed on the window air conditioner unit firmly, and will not be blown away by the strong wind
【Considerate Design】 – It can be easily cut to fit your desired size with scissors. To ensure proper air flow, it can also be cut hole for ac top air vent
【Quick & Removable Mount】 – The package includes 2 pieces of drip cushion, easy to install and remove, installation guide provided.

Bestseller No. 4

Pangda Air Conditioner Compressor Sound Blanket 12 x 12 x 19 Inches Black Heavy Duty Ac Compressor Sound Blanket for Insulation Noise Reduction and Protection from Rain

Package Inclusion: each package includes 1 sound blanket for air conditioner in 2 pieces of wrappers, coming in Black color, the air conditioner sound reducer can be applied for various scroll and reciprocating compressors; The maximum size of the compressor it will fit is about 12 x 12 x 19 inches,ensuring a better noise reduction effect and maintain a serene and peaceful environment
Ideal Fit: measuring about 19 x 12 x 12 inches/ 50 x 30 x 30 cm when it’s installed, the compressor sound blanket is suitable for a wide range of conditioner compressors; The size of its top wrapper is about 34.5 x 28.3 inches, and the surrounding wrapper is about 50.8 x 11.5 inches; Thus, it’s easy to wrap the machines
Quality Material: the compressor sound blanket is made of quality leather and sound insulation cotton; Such material can reduce more noise of the air conditioner compressor than other material
Avoid Obstructing Air Circulation:when installing, try to choose an air conditioner installation location with enough space around and no vegetation or other obstacles blocking it; Make sure the sound insulation blanket is not too tight or blocking the vents; At the same time, regularly maintain the air conditioner, check the refrigerant level, fan and clean the coil; , avoid blocking heat dissipation and causing overheating
Significant Noise Reduction: the air conditioner noise reducer boast soundproof feature; For better noise reduction, the noise reducer blanket need to be installed inside the cabinet and cover around the compressor

Bestseller No. 5

LG 10,000 BTU Window Air Conditioner with Dehumidifier, 115V, Window AC for Medium Rooms up to 450 Sq. Ft., Window Unit AC with Remote Control, 3 Speeds, Auto-Restart, 24-Hour Timer, White

Low Noise Performance: LG window air conditioners operate at sound levels as low as 52dB (in low mode) eliminating unnecessary noise
Multiple Fan Speeds: 3 cooling and fan speeds with Auto Cool allow you to customize your cooling; just set your preferred intensity and your AC unit will cool off your space in no time
Cools Rooms up to 450 Sq. Ft: LW1025Ris ideal for cooling medium rooms (15′ X 30″)
Maximum Usability: Along with its smart home-compatibility, this window AC includes traditional easy to use electronic controls and an included remote control
Auto Restart: After a power failure, Auto Restart will automatically turn the unit back on when power is restored

Bestseller No. 6

SereneLife 8000 BTU Portable Air Conditioner, 3-in-1 Compact Standing Air Conditioner for Room Up to 350 Sq. Ft., Floor AC Unit with LCD Remote Control, Auto Mode, Low Noise with Wrapped Compressor

VERSATILE 3 IN 1 OPERATION – This air conditioner offers 3 operation modes: Auto AC Cooling, Dehumidifier, and Fan. Covers rooms up to 350 sq. ft. and has an air flow rate of 270 cubic meters per hour, ensuring convenient wide-area climate control
POWERFUL COOLING – Experience powerful cooling with this AC unit. Comes with a metal control box for safety, it prevents fire and explosion. With a cooling capacity of 8000 BTU (ASHRAE) and 5000 BTU (DOE), stay cool and comfortable in any space
PORTABLE AND EASY TO MOVE – Move freely with the air conditioner portable unit’s universal castors allowing for easy movement and portability, ideal for home, office, school, and business rooms. Also includes a universal window mount AC exhaust kit
TECHNICAL SPECS – Enjoy time, temp, and fan speed adjustment settings with this portable AC. With a power output of 880W and R32 refrigerant, it includes automatic mode, sleep mode, & power failure memory, making it user-friendly for seniors & kids
ENERGY EFFICIENT AC – Designed for energy efficiency with low power consumption. This portable air conditioner operates with a low noise level (53 dBA) as it has a wrapped motor. Control the settings conveniently with the included remote control

Bestseller No. 7

Housbay White Noise Sound Machine, 31 Soothing Sounds, 5W Loud Stereo Sound, Sleep Timer, Small Travel Sleep Machine & Noise Canceling for Sleeping, Relaxation-Gray

[ What This Machine Can Do ]- Tune out all disruptive noise to sleep well, concentrate better, and have more privacy space- loud neighbors, street noise, snoring, tinnitus, barking dogs, office conversations, and more.
[ Immersive Sounds Surround You ]- 7 fan sounds without using a real fan in winter, 7 white noises without looping tracks, and 17 realistic nature sound surround you at home. More sounds choice than others.
[ Make Anywhere Feel Like Home ]- Take the peaceful sound environment of your bedroom on the road so that you are ready for whatever noise will happen with your hotel or vacation.
[ Volume Control & Auto-off Timer ]- You can customize the volume level to go from very low to quite loud, set non-stop playing, or use a sleep timer to turn off sound or play all night , and the machine can auto-save all your preferred settings.
[ Simple & Sleek Design ]-No app, WiFi, or Bluetooth required -comes with AC adapter and 59-inch USB cable that lets you easily plug in and play. With elegant shapes and expressive color apperances to suit all decors, boost the feel- good vibe.

Bestseller No. 8

EUHOMY Portable Air Conditioners 12,000 Btu, 3 in 1 Portable Cooling AC with Dehumidifier, Fan Modes, Stand-up AC Unit with 46dB Low Noise & 24H Timer, Sleep Mode for Bedroom, Rooms up to 550 Sq.Ft

❄️【𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭 𝐚𝐧𝐝 𝐏𝐨𝐰𝐞𝐫𝐟𝐮𝐥 𝐂𝐨𝐨𝐥𝐢𝐧𝐠 𝐂𝐚𝐩𝐚𝐜𝐢𝐭𝐲】: This 12,000 BTU portable air conditioner is equipped with an upgraded compressor refrigeration system, and the floor ac unit cooling temperature adjustment range is 61℉-88℉(16-31℃), meeting most of your and your family daily needs. With a maximum wind speed of 400m³/h, this portable AC can provide stable, fast, and efficient cooling for spaces up to 550 square feet, with the lowest noisest level of only 46dB, making it suitable for bedrooms, rooms, apartments, office, etc
❄️【𝟑-𝐈𝐧-𝟏 𝐀𝐢𝐫 𝐂𝐨𝐧𝐝𝐢𝐭𝐢𝐨𝐧𝐞𝐫 𝐏𝐨𝐫𝐭𝐚𝐛𝐥𝐞】: The room air conditioner has cooling, dry, sleep, and fan function modes. In cooling and fan mode, the wind speed can be adjusted to Low, Medium, or High three fan speeds. It is also equipped with an auto swing function, which allows you to adjust settings to your preference and enjoy optimum comfort. When switched to Dry mode, the room AC can remove 76 pints of moisture per day, and it can be automatically drained by simply installing the drain pipe to the drain port, and you can use it as a dehumidifier. Indulge in the customized cooling you deserve with our floor air conditioner portable for room
❄️【𝟐 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 𝐖𝐚𝐲𝐬】: The sleek and energy-efficient air conditioner portable features an LED display that provides a clear temperature and icon display. With an impressive 23 ft control distance, this remote offers unparalleled convenience, allowing you to adjust settings from most places in the room or from a distance without bending over. The intuitive design ensures easy operation through simple button touch-friendly controls. This indoor air conditioner is perfect for those seeking a powerful portable ac unit, delivering quiet operation and optimal cooling performance to enhance your comfort and energy savings
❄️【𝐌𝐨𝐝𝐞𝐫𝐧 & 𝐓𝐡𝐨𝐮𝐠𝐡𝐭𝐟𝐮𝐥 𝐃𝐞𝐬𝐢𝐠𝐧】: The 12000 btu portable air conditioner measures 14.06*16.5*27.09 in and features a 360-degree universal wheel and a portable handle, allowing you to place it anywhere in your home for convenience. It has two drainage holes at the bottom and middle, providing flexibility in how you manage water collection. This indoor air conditioner is designed with a washable filter and child lock function, ensuring safety by preventing accidental operation to children or pets. Additionally, this ac unit portable features a Turbo Mode setting that allows for enhanced cooling performance
❄️【𝐓𝐡𝐞 𝐆𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞 𝐎𝐟 𝐀 𝐏𝐞𝐚𝐜𝐞𝐟𝐮𝐥 𝐒𝐥𝐞𝐞𝐩】: In sleep mode, this portable AC unit automatically reduces the fan speed to 46 dB to reduce noise and screen brightness. You can also press the light button to turn off the screen display yourself, helping you have a good sleep. At the same time, this AC unit for the bedroom is equipped with a 24-hour timer, which will automatically shut down when the time you set is reached, saving more energy. You can also turn on the air conditioner’s automatic swing function for a more comfortable experience

Bestseller No. 9

Flamorrow Air Conditioner Drip Cushion, 24″ x 17″ AC Rain Cover with Strong Magnetic Backing, Removable Breeze Stop Air Conditioner Top Pad for Stop Dropping Noise of Raining onto Window AC Units

【Keep Away From Noise】The AC drip cushion is designed to absorb the noise of the water dripping on the air conditioner metal casing effectively, restore the quiet and peace. It will not affect air conditioner operation while using the air conditioner pad.
【Strong Magnetic Backing】Made of high-density foam with strong magnetic backing, which will firmly fixed on the window air conditioner and the air conditioner drIp cushion is not easy to be blown away by the wind.
【Universal Fit】Two piece air conditioner drip cushion covers 24 x 17 inches, suitable for most window air conditioner units.
【Cut to Fit】The air conditioner rain cover can be cut to fit your window ac unit with scissors easily, two-piece design helps cut out the middle vent to ensure the proper air flow.
【Easy Installation & Removal】Just put the magnetic ac drip cushion on the top of the window air conditioner outside unit without any tools. Please note, the ac cover for window unit only can be apply for the iron AC surface.

Bestseller No. 10

Daisypower Air Conditioner Rubber Anti-Vibration Mounts Pad, Shock Absorbing Isolator Mounting Pads for for Outdoor Ductless Mini Split Units AC Bracket, Condensers,Compressors, M8 (L)

[UNIVERSAL DESIGN]:Suitable for most brand outdoor Ductless Mini Split Air Conditioner Condenser ,Heat Pump System,Cooling Only unit,Supports up to 175 pounds for all 4 pcs
[DURABLE MATERIAL]:Made of all rubber with galvanized stud and nut M8,provide sturdy support for air conditioner,The metal stud didn’t go through the rubber,it works more efficient than other all through rubber pads
[PROTECT EQUIPMENT]:Reduce structural damage caused by vibration and noise,prolong your equipment life
[APPLICATION]:Work as Anti -Vibration Pad, Anti-slip Pads,Noise Absorbing Pads,Fit most of air compressor,generator,water pumps,gasline engines
[PACKAGE INCLUDE]: 4 pack Rubber Vibration Isolator Mounting Bracket with galvanized stud and nut

Understanding the Problem: Outside AC Unit Making Loud Noise and Fan Not Spinning

In this article, we will delve into the common problem of an outside AC unit making a loud noise and the fan not spinning. Whether you’re a seasoned DIY enthusiast or someone with basic knowledge of how an AC unit works, this article is designed to provide you with the troubleshooting steps and repair solutions you need to restore the functionality of your AC system.

The Importance of a Well-Functioning AC System

Before we dive into the specifics of troubleshooting and repairing your outside AC unit, let’s take a moment to understand the importance of a well-functioning air conditioning system. A properly working AC system not only keeps you cool and comfortable during hot summer days, but it also helps maintain good indoor air quality and prevents the growth of mold and mildew.

Furthermore, a malfunctioning AC system can put a strain on your energy bills, as it may consume more energy to compensate for its inefficiency. By addressing any issues with your AC unit promptly, you can save money on your energy bills and ensure the longevity of the system.

Common Causes of an Outside AC Unit Making Loud Noise and Fan Not Spinning

Now, let’s explore some of the common causes behind the noise and fan issues in an outside AC unit. By identifying the root cause, you’ll be better equipped to troubleshoot and resolve the problem.

1. Dirty Condenser Coils

One of the most common reasons for a loud noise and non-spinning fan in an outside AC unit is dirty condenser coils. Over time, these coils can accumulate dirt, dust, and debris, obstructing the airflow and causing the system to work harder than necessary. This increased strain can result in noises, such as rattling or buzzing, and cause the fan to stop spinning.

To fix this issue, you can clean the condenser coils using a soft brush or a specialized coil cleaner. Be sure to turn off the power to the AC unit before performing any maintenance tasks.

2. Faulty Capacitors

The capacitors in an AC unit are responsible for providing an extra electrical boost to start the fan motor and help it run smoothly. If the capacitors become faulty or fail, the fan may not receive the necessary power to start spinning, leading to a loud noise and a non-functioning fan.

To determine if the capacitors are the culprit, you can visually inspect them for any signs of damage or leakage. If you notice any issues, it’s best to replace the capacitors with new ones. However, it’s important to exercise caution and turn off the power before attempting any repairs.

3. Fan Motor Issues

If the fan motor itself is faulty, it can result in a loud noise and the fan not spinning. The motor may have worn-out bearings, a damaged rotor, or other mechanical problems that prevent it from functioning properly.

In this case, you may need to replace the fan motor. It’s advisable to consult a professional HVAC technician for this type of repair, as they have the expertise and tools necessary to handle motor replacements safely.

4. Blocked Fan Blade

Another common issue that can cause a loud noise and a non-spinning fan is a blocked fan blade. Debris, such as leaves, twigs, or even small animals, can get stuck in the fan, preventing it from rotating freely.

Inspect the fan blades carefully and remove any obstructions you find. Use caution and make sure the power is turned off before attempting to remove any debris.

5. Refrigerant Leak

A refrigerant leak can also lead to a noisy outside AC unit and a fan that doesn’t spin. When the refrigerant levels are low, the pressure in the system becomes imbalanced, causing the compressor to work harder and produce strange noises. Additionally, low refrigerant levels can result in the fan motor not receiving the necessary cooling, leading to a non-spinning fan.

If you suspect a refrigerant leak, it’s crucial to contact a professional HVAC technician to diagnose and repair the issue. Only certified technicians should handle refrigerant-related repairs due to the nature of the substances involved and the potential environmental hazards.

Troubleshooting Steps for an Outside AC Unit Making a Loud Noise and Fan Not Spinning

Now that we’ve identified some of the common causes behind the noise and fan issues in an outside AC unit, let’s go through a step-by-step troubleshooting process to help you resolve the problem.

Step 1: Check the Power Supply

Before diving into more complex troubleshooting steps, it’s important to ensure that the outside AC unit is receiving proper power. Check the circuit breakers and fuses related to the AC system and make sure they are in the correct position. If any breakers have tripped or fuses have blown, reset or replace them accordingly.

Step 2: Inspect for Visible Damage or Debris

Visually inspect the outside AC unit for any visible damage, such as bent or dented fan blades, loose wires, or signs of debris. If you spot any issues, exercise caution and follow the appropriate repair or cleaning procedures discussed earlier.

Step 3: Clean the Condenser Coils

If you haven’t cleaned the condenser coils recently, it’s a good idea to do so now. As mentioned earlier, dirt and debris can obstruct the airflow and cause the fan to stop spinning. Gently brush off any visible dirt or use a specialized coil cleaner for a more thorough cleaning.

Step 4: Check the Capacitors

If you suspect the capacitors might be faulty, you can use a multimeter to test their functionality. Follow the manufacturer’s instructions and compare the readings with the specified ranges to determine if the capacitors need replacement.

Step 5: Inspect the Fan Motor

If all else fails and the fan is still not spinning, it’s possible that the fan motor itself is the problem. Consider contacting a professional HVAC technician for a thorough inspection and potential motor replacement.

Dealing with an outside AC unit making a loud noise and a fan that isn’t spinning can be frustrating. However, with the troubleshooting steps and repair solutions outlined in this article, you’ll be better equipped to tackle the problem and restore your AC system’s functionality.

Remember to prioritize safety at all times and consult professional HVAC technicians for complex repairs or if you’re unsure about any steps. By addressing the issue promptly and effectively, you can ensure a cool and comfortable indoor environment throughout the hot summer months.

How to fix your AC: fan not spinning

Frequently Asked Questions (FAQ)

Why is my outside AC unit making a loud noise?

The loud noise could be due to a faulty fan motor or a loose component in the unit. It is best to contact a professional technician for inspection and repair.

Why is the fan of my outside AC unit not spinning?

There could be several reasons for this issue, such as a malfunctioning motor, a broken belt, or a faulty capacitor. It is advised to have a professional HVAC technician diagnose and fix the problem.

Can I fix the loud noise and non-spinning fan issue myself?

While there are some simple troubleshooting steps you can try, it is generally recommended to leave the repairs to a professional. DIY repairs can lead to further damage and safety hazards.

How much does it cost to repair a noisy outside AC unit with a non-spinning fan?

The cost of repair can vary depending on the cause of the problem and the extent of the damage. It is recommended to get a quote from a professional HVAC technician for an accurate estimate.

What can I do to prevent my AC unit from making loud noises and the fan from not spinning?

Regular maintenance, including cleaning or replacing air filters, lubricating moving parts, and scheduling professional tune-ups can help prevent these issues and ensure the optimal performance of your AC unit.

Conclusion: Troubleshooting and Resolving Issues with Your Outside AC Unit

In conclusion, dealing with an outside AC unit making a loud noise and a fan that isn’t spinning can be frustrating, but it’s a problem that can be resolved. This article has provided a comprehensive understanding of the issue and offered troubleshooting steps and repair solutions to help you fix the problem.

The importance of a well-functioning AC system was highlighted, emphasizing the need to maintain good indoor air quality and save energy. The common causes of the noise and fan issues were discussed, including dirty condenser coils, faulty capacitors, fan motor issues, blocked fan blades, and refrigerant leaks.

The troubleshooting steps outlined in the article, including checking the power supply, inspecting for visible damage or debris, cleaning the condenser coils, checking the capacitors, and inspecting the fan motor, provide a structured approach to identify and resolve the problem. It is important to prioritize safety and consult professional HVAC technicians for complex repairs or if unsure about any steps. By addressing the issue promptly and effectively, you can ensure a cool and comfortable indoor environment throughout the hot summer months.

Remember to perform regular maintenance on your AC unit to prevent future issues and extend its lifespan. In conclusion, with the information and steps provided in this article, you have the knowledge and tools to troubleshoot and fix an outside AC unit making a loud noise and a fan that isn’t spinning. Don’t let a malfunctioning AC system ruin your comfort, take action and restore its functionality.

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Outside Ac Unit Making Loud Noise? Fan Not Spinning? Here’S What You Need To Know

Understanding the Problem: Outside AC Unit Making Loud Noise and Fan Not Spinning

The Importance of a Well-Functioning AC System