What Could Happen if the Air Conditioner Isn’t Installed Correctly?

Suppose you’ve recently purchased a new air conditioner for your home or an office and are waiting for it to be installed. This is worth remembering that the AC installation can go wrong for various reasons, which can cause the system to malfunction. 

You can save money by contacting AC maintenance in Bowling Green to install the unit. These are several indicators that will assist you in identifying the warning signs from your air conditioning system if it isn’t installed properly. 

Selecting The Wrong AC Size

Picking the wrong size air conditioner is one of the most common errors while installing an air conditioner. Failure to identify a suitable size can have significant ramifications, including AC malfunction and energy-saving issues. 

Installing an air conditioner that is big for your home will cause short cycling, whereas installing an air conditioner that is tiny for your home will cause overwork. The AC will suffer undue stress and strain in both instances, eventually leading to its premature downfall. 

Airflow Is Low

Low airflow is a common issue brought on by defective air conditioning systems. Many cooling coils could be seeping into your subfloor or walls if the indoor unit isn’t connected directly to your home’s ducts. These gasses are a waste of both time and money. Inaccurate load calculations can also result in low airflow. You might finish up with an AC system with less or more potential if the technician doesn’t correctly calculate your home’s cooling load.  

AC Began To Produce A Loud Sound

Your air conditioning system’s outdoor compressor should be set on a concrete surface. The pad’s sizes should be large enough to accommodate all four legs of the unit. The pad should be level as well. Every refrigerating cycle will shake, wobble, and vibrate the condenser if it isn’t level. It will become even more unbalanced as a result of this. The shaking may cause excessive damage to mechanical components, detectors, and cables. Loud noises can also be caused by incorrect tightness or inadequate lubrication of the air conditioner’s moving parts. 

Improper Cost Of Refrigeration

When filling a new air conditioning system with refrigerant, expert personnel should refer to the design instructions. Inadequate coolant charging can result in quality and energy troubleshooting. If there’s not enough refrigerant in the system, it won’t be able to cool or remove moisture from your home properly. When there is enough refrigerant in the air conditioner, it generates much more pressure, damaging the compressed air. 

Sensor Issues

A thermostat sensor was placed behind the control panel on room air conditioners and measured the evaporator coil’s air temperature. The air conditioner may cycle continually or act erratically if the detector is smashed out of place. Adjust the sensor’s place by carefully flexing the wire that holds it in a nearby place, the winding but not trying to touch it. 

Bottom Line

While it is critical to install an air conditioner, it is also critical to keep it installed correctly. A new air conditioner does not have to be a surprise expense. If you pay attention to your air conditioner’s performance, you’ll be able to tell when it’s time to replace it. Carter Heating and Cooling is the preferred HVAC company for AC maintenance in Bowling Green or AC repair in Bowling Green. This is a group of skilled staff who have been working for a long time. 

5 Signs Your Air Conditioner Needs Replacement

With summer around the corner, the sun reemerges, and temperatures heat up. You will want to make sure that your air conditioner is prepared to keep you cool. But how would you know if it needs to be replaced? Contact an HVAC specialist near you and get your air conditioner replaced if you see any of these signs. 

When Should You Replace Your Air Conditioner?

On average, the air conditioner lasts up to 10 to 15 years. The heating and cooling systems last longer when properly maintained, such as by regularly cleaning their filters and air ducts. 

When to replace the air conditioner depends on when you begin to notice that your air conditioner is working less effectively than before or you see that the temperature is not properly adjusting. You can contact Carter HVAC if you want to get AC service in Bowling Green

Five Signs Your AC Needs Replacement

Not Getting Cold Air

It is obvious, but there is probably something wrong with the air conditioner when there is no cool air. The possibilities are endless, from a low Freon level to a broken compressor. Call a professional, or if you have a warranty, claim it. There is no need to wait. If the repair is extensive, you should replace the air conditioner. 

The Airflow Is Not Excellent

Maybe you are getting cool air throughout the house, but you have noticed that the air conditioner is not pushing air out of the way as it used to. It could be because of many things, including issues with the air conditioner’s compressor or blocked vents. While it is possible to have a professional manage these repairs, you can contact an HVAC specialist near you, but it can be expensive to repair them depending on the age of the system and how damaged it is. When the cost of repairing is high, you might want to consider replacing it. 

Moisture And Leakage Around The Unit

Condensation around the AC is normal, but excessive leakage can cause a bigger problem. If there is a refrigerant leak or if you notice a large puddle of water around your unit, you may have a severe issue that needs to be addressed right away. Leaking coolant can cause health risks to you and your loved ones. Excessive water leakage can damage floors and furniture and lead to mold growth. 

Unusual Sounds

If there is a loud grinding, rattling, banging or squealing sound coming from your air conditioner. turn off your air conditioner system and contact an expert right away. These sounds often reflect severe issues like a belt slipping out of place or broken motor bearings. It can lead to costly repair or needs to be replaced if not addressed immediately.  

The Thermostat Isn’t Working

Occasionally, issues with the air conditioner have less to do with your central cooling unit and more to do with a faulty thermostat. A broken thermostat may not be cooling effectively in a particular area. If the other rooms feel fine and the issue is contained in one zone, it may be worth having an AC service check if the thermostat is at fault. If you are lucky, you need to replace the thermostat instead of the whole air conditioner. 

If you see these signs in your AC and need a service done, contact Carter HVAC or visit our website and make an appointment. We are one of the best AC services in Bowling Green. We have skilled professionals to help you. 

Why Should You Wait 3 Minutes Before Restarting The Air Conditioner?

Many people know that purchasing an air conditioner is one of the most effective ways to beat the summer heat. It is only true if the system has been adequately maintained. We provide AC service in Bowling Green that ensures that the system is in good working order and does not malfunction.

Why Should You Wait Three Minutes Before Restarting Your Air Conditioner?

When an air conditioner is turned on, the compressor creates refrigerant pressure. When the compressor is turned off, whether manually, by power outages, or by fulfilling thermostat demand, it must remain off for at least 3 minutes to enable the pressure in the system to equalize before it can be safely resumed.

This temperature equalization is required since one side is hot (greater pressure) while the other is cool (lower pressure). While the compressor is functioning, the flow of gas (refrigerant) avoids a “jolt or shock,” but when power is lost, both sides heat and cool more, respectively, owing to the lack of refrigerant gas flow. As a result, a restart in less than 2 minutes might harm.

If, Even Then, The System is Not Starting, Check The Following:


1. Examine the thermostat. Is it out of date? Installing a newer, programmable thermostat could help you save money and energy. We also offer AC repair services at Bowling Green.

2. Examine any exposed ductwork for signs of wear, which could be a source of cooling loss or inefficiency in the home.

3. Examine the air vents in your home. Items such as drapes, furniture, and toys obstructing airflow should be removed.

4. Examine the drain line. A drain near the indoor cooling coil is typically located in the basement above the furnace.

You can keep your air unit drain clear throughout the summer by flushing one cup of chlorine bleach down it and rinsing it with a gallon of water. The air conditioner drain lines become clogged when dirt accumulates on the indoor coil.

When the drain line becomes clogged, the water must go somewhere, resulting in a backup of water in the drain pan, which may cause severe water damage to your home. A professional should clean drain lines at least once a year.

6. Inspect circuits to ensure that all electrical connections are turned on.

7. Check that the furnace or air conditioning unit’s power is turned on. After that, inspect the outdoor equipment for overgrowth and wear. Outdoor Recreational Equipment Your system will not function without it.

8. Examine the outdoor condenser. Check for any obstructions in or near the equipment, and clean the area around it. Leaves, vines, and debris can clog interior components and impair performance. The panels are intended to protect the electrical connections.

9. Examine the refrigerant lines visually. Insulation should be installed on the ropes. Proper insulation will increase the system’s efficiency. Insulation and refrigerant lines should be repaired.

10. Examine the outdoor electrical wiring for signs of wear. Contact a professional before using your system if you notice any damage or wear.

11. Recognize when your air conditioner has reached the end of its useful life. Air conditioners have a useful life. Even if you keep your unit well-maintained, it will eventually wear out.

If still the problem persists, please contact us!

Does Sleeping in AC Cause Breathing Problems?

We usually don’t like to spend even an hour without AC during summer. Especially at night, we tend to sleep with the AC On. People are not aware of the harmful effect AC can have on their health if they spend most of their time under the cooling AC.

After AC installation in Bowling Green, we don’t turn our AC off until we are out. AC does have filters and multiple benefits, but as every coin has two sides, AC also has harmful effects. However, these problems have easy solutions, and we don’t have to stop using AC to prevent health issues. We have to be careful about the symptoms and how long to use AC.

Health Problems Due to AC

  • Respiratory problem

A clogged air filter gives rise to bacteria, and the moisture level inside AC also increases. This high moisture level gives birth to fungus and germs. The harmful components later circulate throughout our room.

We will feel the symptoms like coughing, breathing issues, sore throat, etc. Those already who have asthma or any respiratory infections will suffer more. If there is no cross-ventilation in the AC-enclosed room, breathing the stale air will also cause respiratory issues. The worst effect of this can be Hypersensitivity pneumonitis.

  • Infection

With the respiratory system getting weak, we can also have an infection. The rarest and the most dangerous infection due to AC is legionellosis.

When we breathe stale or unfiltered air, we can have digestion-related infections too. Nausea is one of its symptoms.

  • Headaches

Spending more time in an AC-installed room can lead to a headache. When the temperature around us keeps on changing, severe headaches become one of the common problems.

  • Skin related issues

The unfiltered air can lead to irritation in the eyes, itching, and allergies. In addition to this, a dehumidifier absorbs moisture from the air, and absorbs the moisture from our skin and body, leading to dry skin, hair loss, or dehydration.

Ways to Prevent The Harmful Effects of AC

  • If your AC uses water, do not let it stagnant
  • Clean the filters frequently
  • Drain lines must be cleaned
  • Never skip annual maintenance
  • Allow cross-ventilation in the AC room
  • Install a smart thermostat and set the timer at night so that it automatically stops after cooling the room
  • Do not spend the whole day in the AC rooms
  • Whenever you feel an increased humidity level or foul smell, call a technician

Proper AC maintenance will enhance the efficiency of AC filters and air quality. For this reason, you should never avoid the annual servicing of your air conditioning system.

For AC maintenance in Bowling GreenCarter Heating and Cooling service can help you with this. Though we are based in Bowling Green, our services are not limited to this area only.

We serve in Glasgow, Russellville, Franklin, and surrounding areas. We are known for our understanding and cooperative technicians, professionalism, and service quality. Call us now and give us a chance to serve you with our highly efficient services.

Tips To Troubleshoot a Furnace Blowing Cold Air

The furnace is used as a main component of the central heating system. In cold weather, it proves to be a boon for everybody. But if it starts blowing cold air instead of hot air, the whole purpose of the furnace becomes useless. Therefore to avoid the chills of the weather, the furnace needs to be fixed as soon as possible.

There can be several issues behind this malfunctioning, and some of them can easily be solved by anyone. So, here are five basic furnace troubleshooting solutions that you can use to solve the heating problem.

What Should You Do?

  • Check The Thermostat’s Fan Settings

Confirm that the fan settings are set to AUTO and not ON. It will ensure that the blower runs only when the furnace blows hot air, which means that the blower will blow air each second, whether hot or not.

  • Next, Check The Air Filter of The Furnace

If you find the air filter filled with dirt, you need to replace it, as it can clog the airflow, causing overheating. Overheating causes the furnace burners to trip off to prevent the exchanger from cracking.

If you cannot replace it yourself, you can call the professionals for furnace repair, Bowling Green, KY.

  • Check The Pilot Light

Generally, the older furnaces face the issue of the pilot light going out. Try to relight it by finding the pilot light assembly and switching off its reset toggle. First, turn the thermostat from HEAT to OFF and find the pilot light.

Then switch the off button on the reset switch. After waiting for a few minutes, switch the pilot button on the Reset switch. As you press the pilot button, hold a lighter to the pilot until the flame lights. The ON button on the reset switch and turn the furnace on at the thermostat at the last switch.

  • Check The Condensate Line

The condensate line may be clogged if you see water around the furnace. If it is clogged, water stores into the furnace, which causes the switch to shut down. Causes for clogging of the condensate can be various, like dust, dirt, and ice.

You can unclog the condensate line by using pan tablets and installing new tubing. If the clogging is due to ice, you can solve the problem by wrapping the condensate line with heat tape.

  • Check The Furnace Control Panel

The electronic unit of the control panel can have malfunctioned. You can resolve it by switching off the furnace’s power and waiting for a few minutes. Then turn the switch ON.

  • Check For The Leaking Ducts

Leaks in the ducts can cause the heat to escape in the surroundings. Thus, it doesn’t feel warm enough. You can pinpoint these leaks temporarily. Then you can call the technicians for repair.

If you are looking for a heating service at Bowling Green, we at Carter Heating and Cooling are here to help and provide you services and repair. Call us at 2705350689 or drop us a mail here.

Safeguard Your HVAC This Snowstorm

Winter is always a season of festivities and relaxation for the family, But with the advent of snow and happy holidays comes the treacherous snowstorms that often wreak havoc on your Heating, Ventilation, and Air Conditioning (HVAC) system.

You can save yourself a lot of time, money, and resources by following these six simple steps.

  • Prevention is Always Better Than Repair

A bit of foresight and careful inspection of your HVAC system can go a long way in reducing the damage to your system while also increasing the lifetime of the components. Be sure to examine your system before and after a snowstorm to ensure its integrity.

  • Warm Up The Pipes

Many people have often found themselves searching for: furnace replacement near me. Often it is due to the freezing up of HVAC pipes during heavy snowstorms; this is solved by defrosting the pipes from time to time.

Some simple steps include using space heaters and hair dryers to warm the frozen pipes, which take just 30-40 minutes and can save you work hours in the future.

  • Clean Vents, Happy Vents

Strong winds bring debris such as leaves, twigs, old newspapers with them; these have a nasty tendency of clogging up vents that keep the air fresh and healthy in your home.

After a snowstorm, be sure to check all your major and minor vents to ensure that it is free of snow, dirt, or any other debris that can block them from getting access to clean air.

  • With Great Generators Comes Great Power

During snowstorms, there is always a risk of power loss. If your locality is at risk of power failure, you might want to consider investing in a generator.

Generators have a longer return-on-investment than most electronic devices; they also provide your HVAC system with the necessary power, thus preventing any damage due to the sudden power loss.

  • Utilize The Technology

With the advent of artificial intelligence, the ‘smartness’ of our devices has risen dramatically over the past few years. With advanced data research and machine learning algorithms, thermostats can identify the different patterns in a household and make intelligent decisions based on past data.

Smart thermostats are easy to use and are very frugal in their energy use. This efficient use of resources ensures that you can save on the electricity bill without sacrificing comfort.

  • Give Your Pipes a Coat

We love to wrap up in a blanket or sweater during the winter months; the same holds for your pipes and wiring. Insulation helps retain heat much better; this has long-term benefits as it will save on energy loss while keeping your pipes and wiring protected from harsh weather conditions. Insulation also helps in improving the longevity of critical components.

Have you ever searched for an HVAC specialist near me? Worry not! Carter Heating & Cooling is there to provide for your needs. Feel free to call or text us at 2705350689 or drop us a mail here. We have the technical know-how to ensure your HVAC system is ready for this winter.

How Much Does It Cost To Remove Mold From a Furnace?

Mold is a common problem in many households. While many people think mold can grow only if the house is dirty or unsanitary, it is not so. Mold growth can also happen due to environmental factors (like humidity), natural disasters (like flooding), or poor construction (old walls, poor quality wood, etc.) Mold growth is a common problem, and the first thing to remember is that it may not be your fault!

Once you have noticed mold growth, you should get a remedial service as soon as possible. If you have noticed mold growth in your HVAC system, you should isolate the system before calling the remedial service. Many contractors who provide furnace repair in Bowling Green, KY, will be able to help you with the service. Mold removal from a furnace costs between $700 to $6,000. The price of mold removal depends on various factors. Given below are the factors that affect the quotation we provide you.

Factors That Affect Pricing

1. The Unit’s Age:

The furnace’s age is the first thing a contractor considers when encountering mold growth. Older units are more susceptible to mold damage than newer ones. The reason is simple: newer technology is built while keeping these factors in mind. Furthermore, newer units can be repaired easily as compared to the older ones.

2. The Unit’s Make and Model

Contractors who provide heating services in Bowling Green usually consider the make and model because many diverse options are currently in use. Not each model and unit is easy to repair and clean. Therefore, units with complex designs that require contractors to remove more parts usually have higher quotations than those with simpler designs.

3. The Unit’s Use and Condition

All contractors who provide furnace repair in Bowling Green, KY, advocate regular maintenance and use of all HVAC systems in your home. The reason is simple: when your unit is kept in good condition, you are (a) more likely to notice a problem before it compounds, and (b) it is less likely to have mold growth.

However, if your unit hasn’t been maintained according to manufacturer guidelines or if you’ve skipped the bi-annual maintenance requirements, the contractor will have to remove mold and maintain the unit, which increases the charge.

4. The Extent of Growth

The extent of growth also makes a significant difference. Your furnace is connected to the ventilation ducts connected to all other HVAC units in your home. If the mold growth is not spotted in its initial stage, it will have spread to these other parts of your home. For the best results, these units will also need to be cleaned. This increases the price or quotation provided to you.

How Long Should You Wait to Call a Contractor?

We recommend not waiting at all. Once you’ve spotted mold growth, call your contractor immediately to get a remedial service. If you don’t have a contractor, you can call us instead. We provide excellent heating services in Bowling Green and will help you out any time you need. You can start booking your appointment by calling us on (270) 282-1183.

How To Tell If Your Thermostat Needs To Be Replaced

The days are getting shorter, while the nights only grow longer. Winter has arrived! With the rapidly dropping temperature, the need for a fully-functioning furnace has become more evident. Close your eyes and imagine you and your family spending a cozy night in without a care for the chilling cold, and then, suddenly, your thermostat stops working. What could possibly be worse than that?

You and your thermostat are supposed to be best friends during winter. It’s supposed to have your back. So, you must keep an eye out and ensure it is functioning properly.

Signs Telling Your Thermostat Needs to be Replaced

Here are a few tell-tale signs that your thermostat needs to be replaced:

1. Your HVAC Unit Randomly Turns On or Off

The primary role of a thermostat is to communicate with your HVAC unit. How is an HVAC unit supposed to function if it does not know when to increase and decrease the temperature as commanded.

A good analogy to understand the working of this system is: your HVAC system is the brain, and your thermostat is the neuron that transmits information to the brain. Without the neurons, the brain would be clueless and would not know what to do. Similarly, without the thermostat, an HVAC system would fail to function. Contact an HVAC specialist near me to learn more.

2. Malfunctioning Sensor

If it ever occurs to you that the temperature your thermostat is reading might be incorrect, this could be a reason for concern. Having an accurate reader in your thermostat is necessary to ensure that your house doesn’t get too unreasonably hot or cold. It is a measure of control, and a lack of control can lead to chaos.

To verify your suspicions, you can invest in a portable indoor thermometer. If it turns out that your thermostat’s readings are indeed wrong, it’s time to invest in a new thermostat. Look into the furnace replacement near me.

3. High Energy Bills

If you notice that your energy bill is going up every month despite using the same amount of electricity, this could point to an inefficient HVAC unit. And many times, the culprit is the thermostat.

As mentioned in the previous point, an inaccurate thermostat reader can lead to no good. It can cause your machine to overwork and thus, use more electricity than necessary. An HVAC specialist near me can put your doubts to ease.

4. Past its Prime

The most common reason for a thermostat to stop working is that it’s too old and rusty. HVAC systems start deteriorating once they go past the decade-mark. The machines grow tired and weaker from years and years of working, and there comes the point of no return. It’s best to accept when it’s time has come and move on to a better, newer option. Furnace replacement near me is the best route to take.

One such reliable option is Carter Heating & Cooling. We can take care of your thermostat needs with ease. Our company is at the top of the chain, so get your furnace replacement near me from the best!

Energy Efficient Heating Options for Your Home

The range of heating systems accessible today can be fascinating. To meet your demands, all of these systems are available in a variety of types and sizes. Choosing the one suitable for you can be confusing. For additional information on installing or updating a new heating system, contact a company that provides heating service in Bowling Green.

These are the types of efficient home heating systems that you may consider:

1. Central Heating

This is the most often used type of heating. This system often includes an electric heating system that distributes hot water throughout the residence via radiators. There are now even more effective solutions that can cut installation expenses and running expenditures.

2. Ducted Systems

A ducted system is regarded as one of the most energy-efficient heating choices for homes and commercial buildings. Heating oil, natural gas, or even coal can be used to power them. A forced-air furnace is frequently present, which distributes hot air throughout the property via a network of ducts.

A central unit is used to draw heat from the outside air. It’s then blown throughout the house via ducting to outlets. After that, the air is reheated in the inside unit. A thermostat regulates the temperature of the air inside.

The ductwork that may be used for heating and cooling in the winter and summer is an attractive aspect of this system. To achieve this dual-purpose, all required is an air conditioner unit to the system.

3. Reverse Cycle Systems

Air conditioning that performs both heating and cooling duties is known as reverse cycle air conditioning. Unlike other similar systems, this Reverse Air Conditioning technology allows the user to utilize a single device to cool or heat a home in the summer or winter.

When it comes to reverse cycle systems, the word “efficient” will come up repeatedly. Efficient in terms of energy use, cost over time, heating efficiency, and cooling efficiency. They are, without a doubt, one of the most energy-efficient ways to heat a home. 

Modern reverse cycle air conditioning systems are getting increasingly efficient over time, particularly in terms of energy usage and cost, making them an excellent investment in comfort and health. Reverse cycle air conditioners are typically far more efficient than plug-in portable electric heaters, which can be inexpensive to purchase but expensive to operate.

Some Additional Factors To Consider

A variety of functions can assist you in reducing your energy consumption. The ability to set heating zones or thermostat controls on their own is the most significant feature. 

It’s unpleasant to return home to a very chilly house, but it’s also inefficient to leave your heating system running in an empty house. The heating timer function is also very significant. Most modern HVAC systems allow you to set a timer and have the heating turn on as needed.

We can help you in lowering the cost of furnace repair in Bowling Green, KY. To get the best furnace and heating repair in Bowling Green, KY, look for a company that provides to the best of its ability or call us at (678)-347-3362.

How To Reset A Furnace After Overheating?

Short cycling occurs when your heater is turned off before it completes its full heating cycle. Your HVAC expert will use the language; therefore, you must understand it. Short cycling occurs when your furnace overheats. Allow it to cool before attempting to restart it.

Although pressing the reset button should restart your furnace, fuel may not start flowing until you complete a different step. Of course, the only fuel used by an electric furnace is electricity, but to be cautious, turn it off before restarting it.

Resetting A Furnace After It Overheats

When a furnace is overheated, the reset button pulls out, and you must press it back in to restart the furnace, but there is a certain protocol to follow. The following are the steps for resetting an electric, gas, or oil furnace –

1. Restarting An Electric Furnace With A Reset Button

If the furnace doesn’t have a power button, turn off the circuit breaker that controls it, open the blower housing, and find the reset button on the side of the blower motor. Press it in until it clicks, then turn on the breaker to reestablish electricity to the furnace. When the furnace gets a signal from the thermostat, it should automatically start.

2.Restarting A Gas Furnace With A Reset Button

  • Check that the pilot light is turned off. If it isn’t, flip the gas control switch to “off” and ensure the pilot light is turned off.
  • Reduce the thermostat temperature as much down as you can
  • Switch off the furnace’s electricity supply by flipping the breaker in the circuit box if the furnace is equipped with electrical ignition.
  • Cut off the furnace’s main gas supply while keeping the pilot gas supply line turned on.
  • Hold a lit match to the pilot flame jet’s aperture to relight the pilot light.
  • Reset the circuit breaker, and then reactivate the main gas supply.
  • Hold down the reset button for roughly 30 seconds while increasing the temperature on the thermostat.

3. Restarting An Oil Furnace With A Reset Button

  • Before resetting an oil furnace, determine the cause of the cutoff. If you run out of oil, you will first need to fill the tank and bleed the fuel line.
  • Locate the bleeder valve. It’s a tiny black box beside the burner with fuel lines going into it in the latter instance.
  • Install a large container to capture at least 1 quart of fuel beneath the valve, or connect tubing from the fuel pump to a 1-quart plastic bottle.

It is a rare homeowner who can manage furnace repair and maintenance without expert assistance — therefore, do not try to DIY to avoid harm. Making the wrong move when flammable and volatile fuels are available, and doing electrical repairs when you are unfamiliar with the necessary procedures, can have catastrophic implications. When you have issues with your heating system and do not feel secure enough to perform the repairs yourself, do not be afraid to ask for help.

Looking for a furnace replacement service near you? Contact Carter Heating & Cooling. They provide the best heating service in Bowling Green. Call (270) 282-1183.