Cielo
If your room is considerably warmer than the rest of your home or if installing a central AC isn’t feasible, you have likely considered opting for a window AC unit. They offer a convenient and cost-effective solution for cooling individual rooms or spaces. But how do window AC units work? How do you install a window air conditioner? How long will it last?
This comprehensive guide will answer all the common queries you might have before buying a window AC for your home.
How Do Window ACs Work?
A window AC operates like any other air conditioning system. It employs refrigeration to extract heat and moisture from a room while circulating cool air back in. Its key components comprise a thermostat, a fan or blower, tubing containing refrigerant, a compressor, an evaporator coil, and a condenser coil.
Next-gen smart thermostat for HVAC systems. Achieve the perfect balance between comfort & savings.
Budget-friendly smart thermostat for central HVAC systems. A thermostat that guarantees savings.
Award-winning thermostat for room air conditioners. Technology that goes above & beyond.
The Ultimate smart thermostat for mini-split, window & portable units. Powerful features, more control.
Sleekest smart thermostat for mini-split, window & portable ACs. A design that magically blends.
Smart mini-split thermostat that is engineered for affordable comfort. Small in size, big in benefits.
When the room temperature increases, the thermostat senses it and activates the AC unit. The blower starts pulling in room air, which then flows over the cold refrigerant coils. As the air interacts with the chilled coils, it cools down and is expelled back into the room, effectively lowering the temperature.
Related: How Does an Air Conditioner Work?
FAQs About Window Air Conditioners
Read on to find answers to some of the most frequently asked questions about window AC units.
How to Install Window Air Conditioner?
AC installation guide comprises several steps that must be carried out carefully. Here are the general steps to install a window air conditioner:
- Select a window close to an electrical outlet and strong enough to support the weight of the air conditioner. Make sure there is enough clearance to install the unit properly.
- Open the window and remove the screen if necessary. Clean the window and sill to ensure a tight seal.
- Install the extendable side panels and corresponding brackets. Follow the manufacturer’s instructions to install them properly.
- Place the window in the opening. You will need someone’s help lifting the unit and placing it in the opening.
- Next, extend the side panels to fill any gaps on the sides of the window. Finally, secure the unit to the brackets or window sill according to the manufacturer’s instructions.
- Screw the window AC in place. Installing L-brackets will help hold the window sashes securely. You will get these in the installation kit.
- Use weatherstripping or foam insulation to seal any remaining gaps around the unit to prevent air leakage.
- Plug the air conditioner into a nearby electrical outlet and turn it on. Adjust the temperature settings as desired.
How Should an Air Conditioner Sit in a Window?
When installing a window air conditioner, it’s important to ensure that it sits properly in the window to avoid issues such as water leakage, reduced efficiency, or even falling out. Some factors to look out for during the installation process include choosing the right AC size and cleaning the area well. Also, properly level the unit and adjust the side panels to fit snugly against the window frame to help keep hot air out.
Related: What Are Over-the-Sill Air Conditioners? Are They a Better Alternative to Traditional Window ACs?
Can You Use Window Air Conditioner Without a Window?
Using a window air conditioner without a window is not typical, as these units are designed specifically to be installed in windows. If you have a windowless room, you can opt for a through-the-wall AC that operates similarly to a window unit but is designed to sit in a wall.
Related: How to Cool a Room With No Windows?
Can You Make Your Window AC Smart?
You can elevate your ordinary window air conditioner to a smart device by integrating it with a window AC thermostat.
It provides the convenience of controlling your home temperature from anywhere using your phone. Plus, they have dozens of smart features that can save you some big bucks!
A window AC thermostat offers daily/weekly scheduling and can monitor your AC usage and air filter status 24/7. It also provides location-based triggers that automatically turn off the unit when you aren’t home and back on before you return.
Related: Turn Your Regular Window Air Conditioner Into An App-Controlled AC
Why Is My Window AC Leaking Water?
AC leaking water is one of the common issues, and there can be several reasons leading to it. For example, if the air filter is dirty, it can restrict HVAC airflow, causing the evaporator coil to freeze. This can lead to moisture buildup in the drain pan, causing it to overflow.
Besides this, a clogged drain line can cause water to back up and overflow the drain pan. Low refrigerant levels and a faulty condensate pump can also be reasons why your window AC might be leaking.
Can You Recharge a Window Air Conditioner?
Recharging a window air conditioner is only necessary if there’s a refrigerant leak, which is not a routine occurrence. With regular upkeep, a window AC unit can last its entire lifespan without needing a refrigerant recharge.
If you suspect a refrigerant leak, it’s crucial to contact an HVAC technician promptly, as the refrigerant contains harmful substances. Attempting to recharge it yourself is not recommended. According to Section 608 of the Clean Air Act, the EPA mandates that only certified technicians can handle AC unit recharging.
Do Window Air Conditioners Use More Electricity Than Normal?
Window air conditioner units are not only budget-friendly for most consumers, but they also have low operating costs. On average, a window AC unit requires 500 -1440 watts to operate. They are more efficient in cooling small areas than central HVAC systems.
How Much Is a Window Air Conditioner?
A window AC typically costs between $150 and $800. Basic models start at around $150 and offer basic features like adjusting temperature and fan settings. On the other hand, higher-end models can cost up to $800 and may come with additional functionalities such as heating capabilities, programmable timers, or even Wi-Fi connectivity, allowing you to adjust the temperature conveniently from your phone.
How to Insulate Around the Window Air Conditioner?
To improve the efficiency of your window air conditioner, it’s essential to insulate the gaps and holes around it.
Related: Window Insulation: Materials, Factors, Steps, Hacks & More
Using a flexible foam insulation material, measure and cut strips to fit the cracks and gaps. These can include the spaces between the upper and lower sashes of the window as well as between the window frame and the body of the AC unit itself. By sealing these gaps with insulating foam, you can prevent hot air from entering and cold air from escaping outside.
Where Are the Drain Holes on a Window Air Conditioner?
The drain holes on a window AC unit are located underneath the outdoor part that protrudes from the window. In older models, the drain hole is often in the center, while modern units usually feature side-mounted holes connected to a drainage hose.
In some units, there are no drain holes. These systems operate differently as they recycle the collected water internally. Instead of a drain hole, they feature a slinger ring attached to a fan blade. As the blade rotates, this ring gathers water and throws it onto the unit’s coils. This process prevents overheating of the window unit.
How to Clean a Window Air Conditioner?
Cleaning your window air conditioner is important to maintain efficiency and prolong lifespan. However, you will have to take care of several components of an AC. Here’s what a cleaning session should look like:
- Turn off the power. Unplug the air conditioner or switch off the circuit breaker that supplies power to the unit.
- Remove the front grille of the unit by unscrewing the screws or clips that hold it in place.
- Clean the coils using a soft brush or cloth. Be gentle to avoid bending the fins. If they are bent, use a fin comb to straighten them.
- Clean the drain pan and drain hole at the bottom of the unit. Use a solution of warm water and mild detergent to clean the pan and hole thoroughly.
- Use a vacuum cleaner with a brush attachment to clean the interior of the unit. Be careful not to damage any components.
- Wipe down the exterior of the unit with a damp cloth.
- Replace the front grille and filter, and turn the power back on to the unit.
Here’s a detailed window AC cleaning guide.
How to Clean the Window Air Conditioner Filter?
Cleaning the window air conditioner filter is important to maintaining the unit’s efficiency and prolonging its lifespan. It is recommended that the air filter be cleaned every two weeks and replaced every three to four months.
Here are the steps to follow in cleaning the filter:
- Turn off the unit.
- Locate the filter. This is usually behind the front panel of the unit.
- Remove the front panel to access the filter.
- You can remove the filter by pulling it out from the unit. Some models may have a release button or latch that must be pressed or lifted before removing the filter.
- Clean the filter using warm water with a mild detergent. Next, gently scrub it with a soft brush to remove dirt or debris.
- Rinse the filter thoroughly with clean water to remove any soap residue.
- Shake off any excess water and let the filter air dry completely.
- Reinstall the filter.
Related: Window AC Repair Guide: Tackle Common Problems Like a Pro
How Long Does a Window Air Conditioner Last?
The lifespan of a window air conditioner can vary depending on a number of factors, such as the quality of the unit, how well it’s maintained, and how frequently it’s used. On average, a well-maintained window air conditioner can last up to 10 years.
Related: How Long Do Air Conditioners Last – AC Lifespan Guide
Can You Put a Window Air Conditioner in Sideways?
It is not recommended to install a window air conditioner in a sideways position. They are designed to operate in a specific orientation, typically with the back of the unit facing outdoors and the front to be facing indoors. Installing the unit in a sideways position can cause several issues, including reduced efficiency, water leakage, and damage to the unit.
Can a Window Air Conditioner Make You Sick?
A window air conditioner alone is not likely to make you sick. However, the unit can contribute to poor indoor air quality due to dirty air filters.
HVAC units are designed to filter air pollutants and contaminants from indoor air circulation. However, if filters are not cleaned or replaced regularly, they can trigger asthma, allergies, and other respiratory symptoms.
Mold can also grow in air conditoner filters if not properly cleaned. People who have asthma or are allergic to mold are more susceptible to getting sick from being exposed to indoor mold. Spray your unit with a hydrogen peroxide solution to kill the mold and prevent future growth.
Related: Can Air Conditioning Make You Sick? Here’s the Truth
How to Remove the Musty Smell From the Window Air Conditioner?
If you notice a musty smell when you first turn on your AC after a period of disuse, it could be due to accumulated dirt or dust on the coils. Cleaning the coils should eliminate this odor, and running the unit for a few hours can help clear out any lingering smells.
However, if the musty odor persists, it likely indicates the presence of mold or mildew in your AC system. This can be caused by various factors such as water damage, a leaking air conditioner, or debris buildup. To tackle this issue, start by emptying the drain pan and checking the drain line for clogs.
Next, inspect the air filter for signs of mold and replace it if necessary. It’s also crucial to clean the evaporator coil thoroughly to remove dirt, bacteria, and other contaminants that may contribute to the musty smell. Preventative maintenance can help you avoid mold and mildew growth in your AC.
Should I Cover My Window Air Conditioner in the Winter?
If your window AC is a cool-only unit, it is generally recommended to cover and store away your window air conditioner during the winter months. This is to protect it from harsh weather conditions, debris, and moisture buildup. However, if you have a window heat pump that provides both heating and cooling, there’s no need to cover it as you will be using it all year round.
In Conclusion
Window air conditioners are an efficient means of cooling individual areas. They work by extracting heat and moisture from a room while circulating the cool air back inside. They are one of the easiest ACs to install when it comes to room air conditioners. Window AC requires regular maintenance just like any other AC, and you should clean it at least once a year besides regular cleaning tasks. With regular upkeep, window units can last up to 10 years. You can make these units smart by pairing them with window AC thermostats and easily control them using your phone.
