Air Conditioning Unit
Your Professional Air Conditioning Unit Manufacturer in China!
In the past 20 years since the establishment of "Dongxia" brand, we have been focusing on air conditioning and processing industry. Now, the main products of Dongxia include: portable industrial air conditioner, industrial dehumidifier, mobile electric heater, fuel-fired heater, etc. Over 100,000 enterprises in the world have been served by the products of Dongxia over the past 20 years.
Why Choose Us
Broad Market
Our company's products are sold to dozens of countries and regions such as Japan, the United States, Australia, New Zealand, Thailand, Vietnam, Russia, Hong Kong, and Taiwan. With professional and excellent product performance and reliable quality assurance, our company has effectively cooperated with many Fortune 500 companies and has been designated as an exclusive purchasing brand by them.
Professional Team
We have a technical team with more than 15 years of product development experience. Our team has always insisted on absorbing the latest technology, and we have committed to improving product performance and extending product service life.
Advanced Equipment
We have professional equipment and working environments such as automatic assembly lines, automatic painting lines, and air conditioner performance testing laboratories.
Professional Certification
Our products have obtained more than ten national patents and passed a series of certifications such as American ETL, Japanese PSE, European Union CE, and Chinese CCC.
24H Online Service
We provide 24-hour online service, if you have any questions you can contact us at any time.
Competitive Price
Our products are available at factory-direct prices and are of high quality and affordable price.
Air-conditioning unit is that process used to create and maintain certain temperature, relative humidity and air purity conditions in indoor spaces. This process is typically applied to maintain a level of personal comfort. It's also used in industrial applications to ensure correct operation of equipment or machinery that need to operate in specific environmental conditions or alternatively to be able to carry out certain industrial processes. An air-conditioning unit must be effective regardless of outside climatic conditions and involves control over four fundamental variables: air temperature, humidity, movement and quality.
Reduced Possibility of Asthma Attacks
According to Mayo Clinic, running an A/C not only reduces humidity in your home, but can also lower the amount of pollen, mold, mildew and other airborne outdoor allergens that can potentially lead to asthma symptoms. Air conditioners can also lower your exposure to indoor allergens, like dust mites. Another important component of avoiding asthma triggers is routinely changing the air filter in heaters and air conditioners, according to Cleveland Clinic.
More Secure
Typically, when we run air condition our homes, we keep our windows and doors closed. This leads to added security, as it is much harder for someone to break in your home with your doors and windows closed and locked than having them open to cool your home.
Cool Place to Exercise
Air conditioning can help by providing a cool and comfortable environment for indoor exercise. If your home is a comfortable temperature, you are more likely to hit the treadmill or free weights after work instead of vegging out.
Prevents Electronics from Overheating
While we know when our bodies are getting too hot, electronics can't always tell us when they are. Heat can do serious damage to electronics, such as shortening their lifespan to losing data. But air conditioning unit can prevent electronic from overheating.
Reduces the Risk of Dehydration
Lower temperatures mean less sweating. A lot of people don't realize that when we sweat, we are actually losing a large percentage of our water intake. But this can all be avoided by enjoying the indoors with some air conditioning.
Less Noise
Typically, doors and windows are closed off to air-conditioned rooms. This means less noise enters the room, keeping these places cool and quiet.
Reasons for an Air Conditioning Unit Freezing in Summer
Low Refrigerant Levels
An AC unit needs a certain amount of refrigerant – a chemical agent – to ensure proper cooling performance. When the refrigerant levels fall below the needed amount, it throws off the balance and causes your air conditioner to freeze. Frozen coils are one sign that your AC may have low levels of refrigerant and should be addressed as soon as possible. The only way to properly fix this issue is to contact professional technicians who can evaluate and restore your cooling system's refrigerant. Don't wait – if left unchecked, frozen coils can lead to further damage and reduced energy efficiency in your home.
Dirty Air Filters or Blocked Vents
During summer, air conditioning units can suffer from freezing due to a buildup of dirt or blockage in the air filters and vents. The most common cause of AC unit freezing is having a dirty air filter or blocked vent. Air filters can accumulate dust from the environment that are then blown into the system, while allergen-filled pet dander, lint and other particles can line vents if not cleaned and vacuumed regularly. Without proper airflow into the system, it quickly becomes overloaded, leading to the unit freezing. Taking preventative measures such as regularly changing air filters, cleaning vents regularly and making sure there isn't any blockage around them should help alleviate any issues with frozen AC units in summer.
Damaged or Faulty Wiring
It's important to check all wiring from the thermostat, furnace, and the outside condenser unit in order to prevent an unexpected freeze-up. If any electrical wiring appears burnt or torn, it should be inspected and transformed by a professional due to safety concerns. Doing routine maintenance for your AC unit regularly throughout each year can help you catch these small problems before they snowball into costly repairs.
Clogged Condensate Drain Line
A condensate drain line is necessary for an air conditioning system, as it removes water that is created from the cooling system, preventing it from back flowing into the unit or escaping into your home. If this line gets blocked with dirt, mold, or any other debris, it can cause a backup of excess moisture and eventually lead to damage to the unit or your home. To solve this issue, it's a good idea to have your drain line checked by a reputable technician who can properly clear out any obstructions and repair any damage if needed. Doing this each year will help keep proper airflow within your air conditioning system and prevent anything like frozen coils from happening in future summers.
How to Maintain Your Air Conditioning Unit




Change Your Filters
Dirty filters kill your AC's efficiency, so install a new one every month during the cooling season for central and window units (or clean them if you've got the washable type). Look for the filter's minimum efficiency reporting value, which ranges from 1 to 12 for home AC units; the higher the number, the better filtration it provides (and the more energy needed to pull air through it, so balance air-quality concerns with energy costs).
Fix AC Leaks
Ducts can lose up to 30 percent of airflow through leaks, and window AC units are notoriously tough to seal properly. For central AC, hold the stick near duct connections. If the smoke blows around, you've got leakage. For ductwork, use foil tape to seal small gaps and duct mastic for larger ones; for window AC units, stuff foam between the device and the window frame, taping as needed.
Use a Timer
There's no need to blast the AC at full tilt while you're at work. For central units, install a programmable thermostat that lets you set higher temps when you're gone and cooler temps when you're home. Newer window AC units have built-in timers and adjustable thermostats, or you can buy a timer at any home store for $10 to $20; just make sure it matches your device's voltage. Unless you're going on vacation, don't shut off the system; otherwise, the air compressor will need to work harder to cool your house later.
Insulate to Keep Air Cool
Ducts in hot attics or crawl spaces should be wrapped to keep the air within them cool. You can use spray foam, batt insulation, or rigid-foam insulation. Seal batt and rigid insulation with foil tape (not duct tape).
Service Your Compressor or Condenser
The AC system's air compressor and condenser are usually located outside the house, close to your foundation. It works best when there's about 24 inches of clear space in all directions, so get rid of nearby shrubs, tall grass, leaves, and hanging branches.
Keep Your AC Unit Cool
Extend the life of your AC system by keeping blinds or shades down during the day; you can also install awnings to shield south-facing windows from intense sun. Consider running the AC in conjunction with floor or ceiling fans to circulate cooled air more effectively.
Perform Annual AC Maintenance
The dealer who installed your AC (or one you find locally) should put you on a yearly cleaning schedule that goes beyond just cleaning the filters.
Get Airflow
Shutting too many interior doors causes AC systems to go out of balance, meaning there's less airflow in the entire house. If you want some privacy, keep doors slightly ajar instead.
Upgrade for Efficiency
For central AC, look for the seasonal energy-efficiency ratio; for window AC units, the measure is simply called the energy-efficiency ratio, or EER. The standards mandate a SEER of 13 and an EER of 8, but devices with higher numbers will cost less to operate.
Six Key Things Should be Considered When You Choose Air Conditioning Units
Split Unit VS Portable Unit
There are various air conditioning units available, but the most popular are portable units and split unit systems. Portable models are standalone air conditioning units that can be easily plugged into a wall socket, providing instant cooling. You can easily move them around your home from room to room. However, they're not as efficient as split units. Also, remember you'll need to find a place to store them during the colder months. Split units air conditioners are quieter, sleeker and more efficient at cooling. They might cost more and require professional installation, but they're worth the investment if you want a stylish and high-performance cooling system.
Space and Size Considerations
If you have limited space in your home or are renting, a portable unit may be more suitable as they don't take up too much room and can cool you down wherever you go. If you opt for a split unit air conditioning system, you'll have an indoor unit and an outdoor unit. The indoor unit is strategically placed at a higher position in the room to ensure an even supply of airflow. On top of that, the indoor unit is whisper-quiet, so it won't wake you up. The outdoor unit is typically mounted on an outside wall, the roof or even your balcony. Its job is to suck out the heat from the indoor unit and release it back outside.
British Thermal Units (BTU)
BTU stands for British Thermal Units, and it's a measurement of heat. When it comes to buying an air conditioner, it's important to check the BTU, as that tells you how many heat units the air conditioner can remove. If you choose a unit that's too strong, you'll waste unnecessary power. And if you pick a weaker AC, you may have to run it at full power continually and still never feel cool enough. We recommend going for a slightly larger BTU to ensure maximum comfort. To work out the BTU, there are three simple steps to follow: Grab a measuring tape and measure the length and width. Make sure you measure in feet
Multiply the length and width (in ft). This will give you the square footage of the room. Multiply the square footage by 25. There may also be other factors that can affect the BTU of your home, such as high ceilings, insulation, and the amount of sunlight rooms receive.
Costs
Affordability is an important aspect to consider when selecting an air conditioning unit. Portable models tend to be less expensive upfront compared to split systems. However, it's important to note that their energy efficiency isn't as good. While a split-unit AC may be more expensive, it can save long-term energy. Remember, air conditioning in the summer can be just as important as heating in the winter when it comes to health and well-being.
Energy Efficiency
If you're concerned about energy consumption and its impact on both the environment and your wallet, it's essential to choose an energy-efficient air conditioning unit. While portable air conditioners are convenient, they tend to use more energy, especially when left running all day. Split-unit air conditioners, on the other hand, are known to be very energy efficient.
When searching for an AC unit, you should also look for additional features to optimize energy efficiency. For example, programmable timers allow you to schedule cooling cycles according to your routine, which prevents unnecessary energy usage. Another useful feature to look out for is an energy-saving switch which turns off the fans when the thermostat turns off the compressor, saving you money.
Buying from a Reputable Seller
When purchasing your new AC, you must ensure you're dealing with a reputable seller, especially if you make an online purchase. Before purchasing, thoroughly review the retailer's returns policy and check customer reviews. This will give you an idea of the seller's reliability and the quality of their products. Ultimately, buying from a trusted seller means you'll have a smooth experience and peace of mind.
Our Service
Pre-Sales
We have a professional sales team to deal with customers from all over the world, so you don't have to worry about any communication problems. If you have questions about the products, you can consult us at any time. We ensure that every customer request is recognized and properly handled before shipment.
In Sales
Before producing customer product orders, we will repeatedly confirm customer requirements to ensure there are no problems. We strictly control quality throughout the production process, and provide real-time feedback to customers.
After Sales
If customers need it, we can provide installation and training to help you use your product. At the same time, we will include a detailed operation manual and installation video in the product packaging so that you can install it yourself. If you have any questions, they will be resolved within 24 hours. If the product is damaged within the warranty period, the damaged parts will be sent to the customer via air freight.
Our Certifications
We have a number of international certificates, and our product quality has passed testing in many countries.

Our Factory
Our factory has a 30000 ㎡ modern plant warehouse, full-automatic assembly lines and testing equipment, and a huge technical R&D team, with an annual production capacity of 200,000 air-conditioners.




Ultimate FAQ Guide to Air Conditioning Unit
Wuxi Dongxia Machinery Co., Ltd. is well-known as one of the leading air conditioning unit manufacturers and suppliers in China. If you're going to buy custom made air conditioning unit, welcome to get more information from our factory. Also, OEM service is available.
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