Category: HVAC

How HVAC Repair Technicians Inspect and Fix Components of Your Home’s HVAC System

HVAC repair technicians inspect, maintain, and fix heating units, air conditioners, ductwork, thermostats, and fans. They also install new HVAC systems. Contact BEST HVAC COMPANIES IN CINCINNATI for professional help.


Your HVAC system relies on air filters to clean the circulating air. The filter is made with fibers, usually fiberglass, that trap the unwanted elements in the air. These include pollen, dust, pet dander, mold spores, microorganisms, and other contaminants. When the filter becomes clogged, it stops airflow through the system. This affects how well the heating and cooling unit functions, raising energy bills.

Filter materials vary, and there are a variety of different types that you can choose from. The thickness of the filter makes a difference as well as how much you use your HVAC system. The lifespan of the filter also depends on lifestyle choices, including whether you have pets or smokers living in your home.

Typically, air filters are made from spun fiberglass or pleated paper surrounded by cardboard for stability and rigidity. They are inserted into a specific place within the return air duct of your home. The filters work as barriers to prevent contaminant particles and pollutants from entering or circulating in the system, or from reaching sensitive areas of your house. They are designed to block out pet hair, dander, mold spores, lint, and bacteria.

A standard filter is rated at MERV 1 to 4, while higher-grade filters have a MERV rating of 5 through 20. The higher the MERV rating, the more effectively the filter will trap and remove airborne pollutants from your home.

Changing the air filter regularly keeps it clean and free of contaminants, making sure the system is working properly. It’s recommended to change the filter at least every 90 days or 3 months, depending on your climate, if you have pets, and other factors. When the air filter becomes clogged, it restricts the flow of air through the system, making the system work harder to distribute heat or air. This increases your energy bills, but it can also damage the equipment and cause it to wear out faster. Keeping your air filters clean can help you avoid these problems, saving money and improving the health of everyone in your home.


The thermostat is a vital part of your HVAC system. It controls when the system turns on, and allows you to select the exact temperature for your home at different times of the day. When it stops working, it can cause all sorts of problems with your air conditioning and heating. Fortunately, with some simple troubleshooting and regular maintenance, you can avoid an HVAC repair nightmare with your thermostat.

Most programmable thermostats last anywhere from five to 20 years. However, this lifespan can vary based on how often you use your system and the quality of your thermostat. It’s not uncommon for older thermostats to develop issues that can affect your HVAC performance and lead to repairs.

Using your thermostat correctly will help you avoid these problems and extend its lifespan. You should make sure to keep it clean and free of grime. Dirty thermostats aren’t able to properly gauge the air temperature in your house. It’s also important to keep your thermostat away from heat sources and direct sunlight.

Thermostats work on the basic principle that heat makes things expand, and cold causes them to contract. A thermocouple in your furnace monitors the ambient temperature and uses this information to determine if it should turn on or off. A thermostat then sends low voltage (24 vac) to the thermocouple through a relay to start or stop the HVAC system.

If the temperature in your home is constantly changing, it’s likely a problem with your thermostat. A faulty thermostat can’t maintain a set temperature, and it can also overwork your HVAC system and cause your utility bill to skyrocket.

The thermostat is the brain of your HVAC system, and it’s the main way that you control how warm or cool your home will be at any given time. If your thermostat is having trouble communicating with the rest of your system, it can cause all kinds of problems. If you suspect this is the case, it’s a good idea to call in a professional for an HVAC repair service. A service provider will be able to evaluate your thermostat, and replace it if necessary.

Condenser Fan

The fan that sits on top of your HVAC unit’s condenser is one of the most critical components to the entire system. It works in tandem with the coils and compressor, helping to change high-pressure refrigerant vapor into low-pressure cool air. The fan also plays an important role in the dissipation of heat, making it a vital part of the overall cooling and heating process.

If your fan motor is acting up, the first step is to turn off the unit and check for power. Then, look for signs of a problem such as the fan not turning on or making strange noises. If these symptoms are present, it’s likely time to call a professional to inspect the fan motor.

Homeowners should also note whether the unit is experiencing vibration or not. These signs could mean that the fan blades are out of balance, which can lead to decreased efficiency and even system failure. Another possibility is that the motor itself is experiencing a problem and needs to be replaced.

Other potential issues with the fan motor include the capacitor not supplying enough electrical charge to the fan, which can cause it to either not start or stop working altogether. Homeowners can check for this issue by looking for signs of damage, such as a burnt-out cap or a burning smell. The reversing leads, which are responsible for controlling the fan’s rotation, can be checked as well by verifying that they are connected properly.

Lastly, the contactor relay can be checked for worn-out contacts that might prevent the fan from getting power. These are another part of the HVAC system that should be left to a professional, as they store high amounts of electricity and can be dangerous.


Your home’s ductwork plays an essential role in the performance of your HVAC system. When they are leaking, damaged or improperly sized, they can cause drafts, unequal heating and cooling in different rooms of your home, unnecessarily high energy bills, and poor indoor air quality.

Ductwork is made from a combination of pipes, trunks, and other specialized pieces to deliver conditioned air to specific areas in your house. Some of these specialized pieces include stack boots and heads, which facilitate vertical air flow. Other types of duct transitions are take-offs, cleats, and turning vanes, all of which help to create pathways for air to move effectively through your ducts.

Generally speaking, most ducts are constructed from galvanized steel and aluminium preinsulated panels that are then joined together using a variety of different fittings. These joints are then sealed with a durable, water-resistant sealant. In most cases, the joints and seams are covered with aluminum tape, which also helps to seal the ductwork.

Over time, dust, dirt, and particulates build up within your ducts. This buildup can lead to a reduced indoor air quality (IAQ) and increased allergy symptoms among your family members. If left untreated, this buildup can even damage your ductwork over time.

A common problem is blocked or obstructed vents and return registers. This can happen when furniture, boxes, cabinets, and other large items are unintentionally placed in front of or on top of these openings. As a result, the conditioned air is forced to travel a longer route and loses efficiency along the way.

Other common problems are leaks, which can be caused by poorly-installed ductwork or by simple wear and tear over time. Leaky ducts release treated air into unoccupied spaces, which can overwork your HVAC system and ultimately lead to expensive repair bills or premature replacement. They can also reduce your energy efficiency, resulting in higher energy bills.

Finally, holes and crevices in your ductwork can allow pests like rats or mice to enter. These pests can saturate your ductwork with unhealthy contaminants like urine and feces. This contaminant saturation can result in a mold infestation, which can cause health issues for your family.

Why It’s Important to Have Your AC Serviced

Air Conditioning Repair Sherman Oaks technician can save you from high repair costs and costly replacements by handling AC issues early. This is the key to extending the lifespan of your unit.

Air Conditioning Repair

An air conditioner is a huge investment and a significant part of your home. Keeping it in good working order will ensure optimal performance and safety for your family.

Dirty evaporator coils are one of the most common causes of AC malfunction. The evaporator coil absorbs heat from indoor air to cool it down, but if the dirt builds up, it can prevent that transfer and cause the AC to work harder to achieve the same result. To check whether the evaporator coil is dirty, compare air pressure at the vents that take in indoor air to the output pressure at your air conditioner. If the difference is substantial, it could be a sign that the coil needs cleaning.

Often, the evaporator coil becomes dirty because of improper maintenance. The coil should be checked and cleaned regularly to keep it clean. However, it can be difficult to reach the coil inside your unit unless you have a specially designed access panel. If you’re unsure how to inspect the coil, an air conditioning expert can show you where it is and how to access it safely.

If your evaporator coil becomes dirty, the cold refrigerant can’t absorb enough warm air to raise its temperature. This causes water vapor to condense on the coil, which can lead to frost or ice build up. If the evaporator coil remains frozen, it will put a lot of strain on your system and can damage components such as the compressor and fan motors.

A dirty evaporator coil can also reduce the energy efficiency of your home, which can have a big impact on the amount you pay for electricity. You may even miss out on tax breaks or other benefits based on your home’s energy efficiency rating. Extreme clogging can even lead to system failure, which can cost you a fortune in repair bills and replacement parts.

Dirty Compressor Coils

If your air conditioner’s evaporator coil is dirty, the compressor coil will soon follow suit. Coils are important parts of the system and need to be clean in order for the system to work properly. Dirty compressor coils make the cooling process difficult for the system, forcing it to run longer and harder in an attempt to cool your home. This can cause significant wear and tear on the unit, which can shorten its lifespan.

One of the most common signs that a condenser coil is too dirty to function well is an unexplained increase in your utility bill. If your AC is running more often and still isn’t reaching the cool temperature you set on the thermostat, it could be a sign that it needs to have its coils cleaned.

Condenser coils are made of copper and filled with refrigerant. They are located in the outdoor unit of the AC, and they absorb heat from inside the house and transfer it to the outside air. The air conditioner then blows the cold air into the house. This cycle is repeated as the system keeps operating in order to maintain your preferred temperature setting on the thermostat.

When a condenser coil becomes too dirty to effectively absorb and release heat, the refrigerant in the system will begin to boil and lose its ability to cool the air. This is a serious problem because it can cause the compressor to fail, requiring costly replacement of that part of the air conditioning system. This is another reason why it is so important to schedule regular professional maintenance from an air conditioning repair company. A skilled technician will clean the coils and ensure that the rest of the system is in good working condition.

Low Coolant Levels

Engine coolant is a vital component of your cooling system, and without enough of it your engine will overheat. A faulty cooling system can also damage the compressor in your AC, so it is important to have your car’s air conditioning serviced before you run out of coolant.

If the warning light on your dashboard is illuminated, it means that you have low coolant levels and you need to refill it. You should always replace your coolant with the specific type recommended by the manufacturer, as using a different coolant could cause the engine to overheat and lead to costly repairs down the road.

The most common causes of low coolant are leaks or evaporation. Leaks can occur in any part of the coolant system, including the radiator, water pump, or hoses. The best way to prevent these problems is by regularly inspecting your cooling system and servicing it on a regular basis.

Other signs that you might have low coolant include poor fuel economy, a burning smell under the hood, or rattling noises coming from underneath the vehicle. Coolant contains glycol, which has a sweet smell and can attract children and animals, so it is important to keep it out of the reach of children and pets.

You may also notice that your air conditioner isn’t as cold as it used to be if the coolant level is low. The refrigerant in the AC is used for heat exchange, so it won’t get as cold if there isn’t enough of it. In addition, a lack of coolant can cause the coils to overheat, which will make your air conditioner less effective. A professional technician will be able to diagnose the problem and determine the best course of action for your vehicle.

Unusual Noises

If your air conditioner is making unusual noises, it’s not something to ignore. In fact, it’s probably a good idea to call an AC technician right away. Different AC sounds can indicate a number of different problems, and it’s important to understand what each sound means so that you can know whether you need to add an HVAC professional to your speed dial.

Clicking and rattling noises can often be a sign that it’s time for an AC repair. A clicking sound can be caused by a thermostat that isn’t sending power to the unit or a problem with electrical wiring. A rattling sound, on the other hand, may mean that a part is loose and could potentially hit the compressor or fan motor.

A buzzing noise can be a sign that there is an issue with your AC capacitor, which stores energy until it’s needed and then releases it to power the compressor. This issue can lead to the compressor overheating, which is why it’s essential that you get a New York AC repair service as soon as possible.

A dripping sound can also be a sign that there is a problem with your AC system. If the dripping is slow and pulsating, it might be something as simple as a fan blade that has come loose or a drip pan that needs to be cleaned. However, if the dripping is quick and irregular, it’s likely a sign that your coils have frozen over and will need to be replaced. A professional will be able to help you determine the cause of the problem and decide on a suitable course of action. This can prevent permanent damage to your air conditioning unit and help you save money on future repairs.

Warm Air Coming From Vents

One of the most common reasons for AC repair is when cooled air stops flowing through your home’s vents. This can be caused by a number of things, including clogged vents, a dirty air filter or an evaporator coil that is icing over. If you suspect any of these issues, it’s important to call a professional for AC repair as soon as possible.

Another reason for your AC blowing warm air is if the fan on the indoor unit has stopped working properly. The fans on the condenser and evaporator need to move to create air flow, so if they aren’t moving, it can cause a number of problems, including an inability to cool your house. Make sure that the vents are open and clean and that nothing is blocking them, like furniture or area rugs.

If you’re still not getting any cooled air, then it could be a problem with the ductwork. Over time, the ductwork can develop holes or tears that allow cooled air to escape before it reaches the vents. Air conditioning repair specialists can inspect and replace damaged ducts to restore airflow.

Another possibility is that your AC system has a clogged condensate drain. This line removes moisture from the air, which is then expelled through a drain pan and down a drainpipe. The drain can get clogged with debris, which can lead to water overflow and damage your system. You can usually spot this issue by noticing water damage near the drain pan and a musty, moldy smell in your home. If this is a problem, you can try clearing out the drain line by pouring a mixture of one cup of bleach and one cup of water down the pipe while wearing rubber gloves. If the clog is severe, you can hire a professional to use a wet-dry vacuum to clear it out.

What Is A Residential Cooling Unit?

A Residential Cooling Unit is an air conditioner that pumps air into the home. The unit is normally located outside the house and is filled with refrigerant gas. This refrigerant, liquid at room temperature, is transformed into a gas when the temperature is lowered. The unit’s outlets are usually placed downwards to distribute heated or cooled air throughout the home. There are many different types of residential cooling units.

Condenser Assembly


The Condenser Assembly is the heart of any air conditioning system. It consists of a steel shell and a coil made of copper. Water flows through the coil to cool the hot gas. Air is fed into the shell from above, condensing as it contacts the coil. The gas is further chilled as it passes through a subcooling stage at the bottom of the shell. Occasionally, it needs to be cleaned. You can do this mechanically or by using a chemical solution. For more information, contact All Temp Air Conditioning & Refrigeration.

The condenser is the only mechanical component of the entire system, with the evaporator coil consisting of a box of fins and tubing with a drain attached to carry away the condensation. While these two parts are important, the condenser is where most problems are likely to occur. Therefore, knowing what to look for in a condenser assembly will protect you from being scammed by unscrupulous service technicians.

When replacing a condenser, it is essential to know the difference between air-cooled and water-cooled units. Air-cooled units have an outside unit, while water-cooled units are inside. In addition to residential air conditioning units, condensers are also used in industrial steam power plants. They are also found in heat pumps and industrial steam power plants. They are easy to access and require regular maintenance.

Zoned Cooling

One of the easiest and most effective ways to achieve consistent temperatures in multiple areas of the house is through HVAC zoning. The process starts with the installation of individual thermostats for each zone, which is linked to a central control panel. Several homeowners find this system to be a great way to achieve consistent temperatures in different parts of their homes. It also helps reduce energy costs. It also helps you avoid the thermostat battles that can arise when trying to control the temperature in different areas of the home.

A single thermostat for a single zone will not work in a residential setting, because it cannot cycle enough air in a small space. A two-stage air conditioner with variable speed blowers is necessary. This system is more expensive than a single-stage unit, but it is typically more efficient and has lower operating costs. While it may cost more upfront, it will pay off in the long run. It also provides more comfort for the entire family, which is an added benefit.

A zoned system requires separate thermostats and a sensor that relays this information to the central thermostat. Then, the HVAC unit is equipped with dampers, which are valves that control the volume of air being distributed from the main system to the different zones. Dampers will also help to solve heat issues on the upper floors. If you’re wondering how this technology works, here are some benefits. This technology will help you save energy and money on heating and cooling bills!

Energy Efficiency

While many factors contribute to the energy use of residential cooling units, one of the most important is location. The size of the equipment, the type of installation, and its operating schedule all play a role in energy use. Listed below are some examples of the most energy-efficient options. Here are some factors that can help you find the most energy-efficient unit for your home.

New residential air-conditioning and air-source heat pump systems must meet minimum energy efficiency standards by 2023. These new standards require that these units have seasonal energy efficiency ratios (SEERs) of at least 13.0. The higher the SEER, the more energy efficient the system is. The new standards also require that heating-powered air conditioners and heat pumps be more efficient than their southern counterparts. However, older homes may not have sufficient SEERs for energy efficiency.


Typical causes of noise from residential air conditioning and heating units include a malfunctioning thermostat or control, bent or lose fan blades, and loose or faulty metal ductwork and registers. Clicking, humming, or whistling sounds are more likely to originate from the duct system, such as a bad vibration damper or defective thermostat. But there are also other causes of noise. Here’s how to identify the source of your noise and fix it.

In some cases, humming noise in the HVAC system is caused by the fan motors of the compressors. This can happen when the motors fail to start. The humming noise can also be caused by a failed start/run capacitor or a malfunctioning motor. A rattling or buzzing sound from an AC unit’s compressor could be a sign of a faulty fan motor. Fortunately, most noises are caused by internal parts, which can be repaired.

Noise from residential cooling units can occur when the air conditioner is turning on or starting. When this happens, several moving parts begin to move at the same time. Fortunately, this noise goes away after a few seconds, although it may reappear as soon as a new cooling cycle begins. Other noises, however, may be the result of a malfunction or an improper installation. In other cases, the sound may be due to ice or foreign objects in the unit.


When choosing a cooling unit for a house, you should consider the square footage of the rooms. To find the square footage, multiply the length and width of each room. Next, multiply this number by 25, and that will give you the amount of BTUs required for the rooms. One ton of air conditioning has 12,000 BTUs. Therefore, a 1.5-ton unit should suffice for a small-sized home.

The size of a residential cooling unit will depend on the number of rooms in the home, the number of windows, and the insulation in the house. An HVAC dealer can help you choose the best size for your home. Alternatively, you can get an energy audit from a qualified contractor or HVAC dealer. The Manual J calculation will consider the characteristics of your home, as well as the climate in your area. This will give you a good idea of what size of the residential cooling unit to choose.

The BTU rating of the cooling unit will determine its capacity. Typically, 1 BTU will cool a square foot. For example, one ton equals 12,000 BTUs. In other words, for every degree above or below the desired temperature, a one-ton unit will cool a square foot. Residential cooling units are typically smaller than commercial units. HVAC contractors can install two units to meet your cooling requirements.


Residential cooling units need periodic maintenance to keep them operating properly. The maintenance tasks include cleaning filters and inspecting vents. For heat pumps, maintenance also includes checking the evaporator coil and drain pan. Cleaning the evaporator coil will prevent it from becoming clogged with debris, which can impede airflow. Keeping the drain pan and filter clean will help prevent the accumulation of debris. Additionally, if you have shrubbery or plants near the cooling unit, clean the leaves and debris that may accumulate around it.

Maintaining HVAC units will extend their life and keep you comfortable all year round. You should schedule maintenance appointments at least once a year, usually in the fall and spring. Regular maintenance will help ensure the efficiency of your unit and prevent a breakdown in the future. If you do not regularly schedule maintenance appointments, you may end up paying more for a more expensive unit in the long run. Also, keep in mind that older HVAC systems require more frequent servicing, which can damage the unit.

Air conditioning systems are essential for keeping the home cool during hot summer months. Without routine maintenance, you run the risk of experiencing delayed or reduced system function and diminished lifespan. A professional can help you avoid problems by scheduling regular maintenance appointments and following through with any minor issues. Regardless of the size of your HVAC system, regular maintenance can reduce the likelihood of emergency repairs and costly breakdowns. By scheduling regular checkups, you can ensure your home’s cooling system is running as efficiently as possible all summer long.