Steps Involved in Commercial HVAC Installation

July 21st, 2014 by Stephen Andrews

Keeping your business cool during Georgia springs and summers, and heated during winters (and a combination of both for autumns) requires a reliable HVAC system. But, to have a reliable comfort system, you need to have professional installation. A shoddy job putting in a commercial heater or air conditioner will result in large amounts of energy waste and an uncomfortable work space. Make sure you contact experienced professionals in commercial HVAC installation in Roswell, GA when you need a new comfort system to heat and cool your business.

At Cool Air Mechanical, we take pride in the work we provide for homes and businesses. Put us at the top of your list for commercial HVAC services. We’re here to help you 24 hours a day, 7 days a week.

The Stages of Commercial HVAC Installation

The first part of installation is to have a meeting with the professional installers to discuss your needs and to give them a general sense of your business, the building size, the hours, and the numbers of employees and average number of customers/clients (if applicable). This will give the installers an idea of how extensive a system you will need.

The installers will then come to the worksite and look over your current HVAC system (if you are replacing one), the ventilation, and the layout. They will have an idea of the type of comfort system that will work for the area, such as a packaged rooftop unit or a ductless mini split.

The next step is crucial: the commercial technicians measure your buildings heated square footage and check on insulation and air leaks to determine how many tons of heating/cooling are necessary to provide you with the comfort you need without wasting energy.

The final step is the actual installation. If you are having rooftop units put in, the job will go quickly and provide minimal interference with your regular work. The longest part of installation usually involves removing the older system. The installers take care of necessary upgrades to accommodate the new system, such as new thermostat and building controls and alterations to ductwork. The whole process, from start to finish, can take 1 to 3 days, depending on the size of the installation.

When you’re in need of HVAC experts in Roswell, GA for your commercial HVAC installation, you will receive the fastest installation our team at Cool Air Mechanical can delivery. But out technicians will never sacrifice quality to speed, because they want you to enjoy many years of repair-free service from your new system. Should you need repairs, however, you can trust to our 24-hour emergency service.

Tools Used for Duct Cleaning

July 15th, 2014 by Stephen Andrews

Here’s a suggestion for cleaning your home’s air ducts: go pull out the vacuum cleaner from the closet that has the long hose. Unscrew the grate from over one of the room vents. Turn on the vacuum cleaner and push the hose down into the duct beyond the vent and move it around for a few minutes while it sucks up the thick clogs of dust, carpet and furniture fibers, pollen, and dander. Put the grate back over the vent, and move onto the next vent and start the process again.

It sounds so simple, doesn’t it? Yes… because it’s too simple, and it doesn’t work. In fact, there’s no “do-it-yourself” solution for cleaning your home’s ductwork. The extent of your ventilation system and the level of contamination that can develop inside it require professionals equipped with specialized tools to handle the job. Fortunately, it’s easy to schedule the work: just call Cool Air Mechanical and talk to our team of experts in duct cleaning in Decatur, GA. We will handle the work with the best tools available and the training to use them.

Professional Duct Cleaning Tools

  • Power vacuums: The vacuums used for duct cleaning are large, industrial strength machines that attach to your forced-air HVAC system to access the network of air ducts. These vacuums are capable of placing an entire ventilation system under “negative pressure” that causes contamination to lift away from the interior surfaces of the ducts. Once the vacuums have altered the pressure inside a ventilation system, they then use powerful suction to remove the majority of particles.
  • Agitation devices: This term covers a large number of rotary brushes and vacuum hose attachments. They are designed to snake deep inside vents on long cables to loosen debris from the walls of ducts (without damaging the duct material) and allow for easier removal. Agitation devices are used to target specific areas of trouble that a power vacuum might not be capable of affecting.
  • Video inspection systems: How can duct cleaners know they need to target certain areas? They use video inspection equipment that can enter the ducts to examine contamination levels and the sources of blockages that are causing airflow troubles. Technicians often use this high-resolution camera equipment to provide “before and after” views to show how effective other cleaning methods have been.

You should schedule regular professional duct cleaning in Decatur, GA (we recommend that most homes have cleaning done every other year) to protect your HVAC system and your indoor air quality. Call our duct cleaning experts at Cool Air Mechanical today for top-level professional services that make use of the finest equipment available.

Causes of Inefficiency in Your Air Conditioner

July 15th, 2014 by Stephen Andrews

It’s not unusual to see a small rise in your energy bills at this time of year, but if you’ve noticed a sharp increase in your bills, and you haven’t changed how you typically operate your air conditioner, you may be dealing with inefficiency issues. There are a number of factors that can cause your air conditioner to run less efficiently, even if your system appears to be fine. Unfortunately, inefficiency can point to developing or existing problems with your air conditioning in Alpharetta, and the sooner these issues are attended to, the better.

Culprits of Inefficiency

There are a number of things that can reduce the efficiency of your air conditioning system, but here are three that our Cool Air Mechanical technicians see frequently:

  • Dirty Air Filters

The air filter in your air conditioner helps stop dust and dirt from entering your system. It’s a big job, which is why the filter should be changed every 1-3 months. When your air filter isn’t changed, it becomes clogged, creating a layer of dirt, dust and debris that can restrict the air flow in your system. Restricted air flow forces your AC to work harder, so it uses more energy – energy that will show up in your monthly utility bill.

  • Fan Issues

Your air conditioner has two fans, one near the condenser and the other near the evaporator. Fans have multiple parts, including blades, motors, fan belts and ball bearings, all of which can experience problems. Once a fan turns slower than usual, or stops completely, the air flow in your system decreases, creating strain on your system.

  • Low Refrigerant

The refrigerant in your system has to be at a specific level in order to work properly; this amount is in the manufacturer’s handbook. There are only two reasons your refrigerant level changes: the wrong amount was administered during initial installation, or you have a leak. Low refrigerant can cause system-wide problems, but most of all, it causes your air conditioner to compensate for the loss by working harder.

Maintenance Is the Key

Any time your air conditioner operates inefficiently, it will use more energy. A great way to keep your air conditioner running optimally is by scheduling bi-annual maintenance. During routine maintenance, your system is thoroughly inspected and cleaned, and repairs are made as needed. Regular maintenance allows you to get ahead of small problems and prevent bigger ones from occurring.

If you think you may be dealing with inefficiency, or you are ready to schedule a routine maintenance visit, call Cool Air Mechanical today!

3 Common Air Conditioning Repairs

July 10th, 2014 by siteadmin

Here at Cool Air Mechanical, we know it’s summer when the phones start to ring. Air conditioners work extra hard in the Georgia heat, and, as a result, some may run into problems. If you need air conditioning repair this summer, you’re not alone. Here are 3 of the most common air conditioning repairs our technicians encounter here in Lawrenceville.

1. Refrigerant Leak

One of the most common air conditioning repairs is a refrigerant leak. Refrigerant continuously moves through your AC system to remove heat from your home and release it outdoors. There’s a set level at which the refrigerant is meant to remain at all times. If this level ever changes, the exchange of heat may be unable to take place, and your unit won’t be able to properly cool your home. Refrigerant sometimes escapes from your AC system through a small leak, which a professional technician can locate and correct.

2. Frozen Evaporator Coil

An air conditioning unit is designed to accommodate a certain amount of airflow. If the airflow changes for any reason, such as a blocked duct or a dirty air filter, the evaporator coil may freeze. The evaporator coil, located inside your home, helps to evaporate the refrigerant so it can take in heat. When freezing occurs, a technician will not only take care of the frozen coil but will also look for the source of the problem, so the unit is less likely to run into airflow issues in the future.

3. Faulty Thermostat

A faulty thermostat is often the root of your AC problems. If your air conditioner won’t run, or if it does not turn on and off at the proper times, it may just mean that your thermostat is not functioning properly, so that your system cannot sense when to turn on and off. A technician can check for problems with the sensor or other wiring issues during a service call.

When your AC needs repair, don’t stress. At Cool Air Mechanical, we’ve seen it all. Call us any time of the day for AC service in Lawrenceville.

The Famous Painting of the Declaration of Independence Isn’t What You Think It Is

July 4th, 2014 by Stephen Andrews

If you grew up in the United States, you probably first saw John Trumbull’s painting of the Signing of the Declaration of Independence in an elementary schoolbook. This oil-on-canvas 12’ x 18’ painting hangs in the rotunda of the United States Capitol in Washington, D.C. It is one of the most famous symbols of freedom in the country and almost every citizen can conjure it from memory.

Except… the painting isn’t of the singing of the Declaration of Independence. The actual title of the work is Declaration of Independence, and although it does portray an important moment in the history of the document that announced the Thirteen Colonies’ decision to break away from British rule, the event in the painting occurred on June 28, 1776, not July 4, 1776.

John Trumbull, a Connecticut native who fought in the Revolutionary War and whose father was the state governor, was commissioned to create the painting in 1817. He did painstaking research on the figures in the picture and also visited Independence Hall to see the actual chamber where the Second Continental Congress met. Trumbull only included 42 of the original 56 signers, because he could not find adequate likenesses for 14 or them, and added a few figures who were not present (most of whom declined to sign the actual document). In fact, the men depicted in the painting had never been present in the same room at one time.

So if the painting does not portray the signing of the Declaration of Independence, what is happening in the image? The Trumbull’s scene depicts the presentation of the draft of the declaration to the Continental Congress for editing and approval. The five-man drafting committee (John Adams, Roger Sherman, Robert R. Livingston, Thomas Jefferson, and Benjamin Franklin) is handing over their finished work, which congress would then edit carefully over the next few days before voting on it and signing it on the day that we now celebrate as the start of the United States of America.

One last, odd, fact: two of the five-man drafting committee, John Adams and Thomas Jefferson, both died on July 4th—although many years later.

Our family at Cool Air Mechanical hopes that your Fourth of July (or Twenty-Eighth of June if you decided to start celebrating early) is a memorable and happy one.

What the ENERGY STAR Label Means for Your Air Conditioning

June 27th, 2014 by siteadmin

Summer is here, and that means it’s time to start looking at your options for air conditioning in Duluth, GA. If you’re comparing AC systems, you may have seen the ENERGY STAR label printed on product descriptions and packaging. But what does this mean for your air conditioning? Do you need an ENERGY STAR certified air conditioner in your home?

If you want to save on your energy bills this summer, an AC system backed with the ENERGY STAR label may be the right choice for you. Read on to discover how an ENERGY STAR product can save you money without affecting the performance you expect from your new AC.

Increased Energy Savings

The ENERGY STAR label is a government-regulated symbol that allows you to identify whether your appliances are energy efficient according to guidelines set by the U.S. Environmental Protection Agency. ENERGY STAR certified AC systems help to decrease pollutants, which not only helps to protect the environment but also allows you to save money on your monthly energy bill.

Products with this symbol must meet certain qualifications to earn the ENERGY STAR label. This label means that energy savings will increase significantly when compared to less efficient systems. While ENERGY STAR air conditioners may cost more than other systems, the savings over time can offset the initial fee.

No Need to Sacrifice Performance

If an air conditioner uses less energy, you may assume that the performance of the system suffers as a result. However, in order to earn ENERGY STAR certification, a product must meet consumer demands for system performance. As a result, your air conditioner will offer the same features and high performance you would expect from any other system while saving you money over time.

Only a technician can help your AC to remain energy efficient throughout the years. In addition to purchasing an ENERGY STAR air conditioner, we recommend professional maintenance once a year to clean and adjust the components of your AC system and to look for any potential problems that could affect energy efficiency.

Cool Air Mechanical offers ENERGY STAR air conditioning in Duluth, GA. Call now!

Why Are Most Commercial HVAC Systems on the Roof?

June 26th, 2014 by Stephen Andrews

Even people who have never run a business know that the HVAC systems of a commercial building are usually located up on the roof: they’ve seen enough action movies with shoot-outs on top of office buildings where the heroes dodge bullets by hiding behind fans and air conditioning cabinets. But not many people—including business owners—know the reason for this top-of-the-world positioning.

Rooftop units exist for a number of reasons. When you are looking for commercial HVAC installation in Kennesaw, GA, you probably will also want a packaged rooftop system. Contact Cool Air Mechanical to arrange for the installation of the right system for your company. We have years of experience providing comfort for businesses in the Greater Atlanta Area.

Rooftop Package Units

The original reason that air conditioning and heating systems moved to the roof of commercial buildings was simple expediency combined with the nature of U.S. cities and businesses in the early 20th century, when electro-mechanical air conditioning was first introduced. At the time, the only companies large and wealthy enough to need these systems were located in the downtown areas of cities, where buildings clustered close to each other. Air conditioning systems had nowhere to fit, and they couldn’t draw sufficient outdoor air for venting in tight spots down in street alleys. The roof was the most logical place to put them. Even today, when HVAC systems are affordable for most companies and businesses have headed to more spacious locales, the technology that developed to help keep them comfortable has remained adapted to rooftops.

The roof location proved advantageous in other ways. Packaged units that could house all the components in a single cabinet could remain removed from indoor spaces, which reduced noise pollution and permitted more work room. The systems were also less susceptible to damage from vandalism and other human causes. Repairs and maintenance could be done without any disruption to workflow. The extra space on the roof made it easy for new modular HVAC systems to expand.

The current high-efficiency rooftop packaged units are one of your best options for commercial HVAC installation. However, if another type of system would better suit you, trust to our trained technicians at Cool Air Mechanical to locate it and make sure it is installed right. Contact us today and let us know what you’re looking for. We also offer a variety of HVAC services in Kennesaw, GA. Just get us on the phone and we’ll answer any questions you have about your HVAC system.

Common Noises That Indicate a Need for Air Conditioning Repair

June 20th, 2014 by Stephen Andrews

Part of the soundtrack of summer is the gentle hum and whir of the fans and the compressor in a central air conditioning system. Modern manufacturers design ACs to operate with as little noise as possible, and most of the time you will pay little attention to the white noise that comes from your cooling system.

But then suddenly… clank! clang! hiss! ch-chunk! Your air conditioner starts making an odd sound you haven’t heard before. You know this can’t be right, and you make the right move: you call a professional for air conditioning repair in Roswell, GA. You can reach skilled technicians to handle this service 24/7 at Cool Air Mechanical, where we proudly serve the Greater Atlanta Area.

Here are some of the more common warning noises and what they may mean for repairs:

  • Hissing: This sound like escaping gas or liquid is probably exactly that: refrigerant, in either its liquid or gaseous state, escaping from a breach in the air conditioner. This is a serious situation, since loss of refrigerant will cause the AC to begin to lose its cooling ability. Low refrigerant will also threaten to damage the compressor and cause ice to form over the indoor coils, both situations which can lead to expensive repair needs—or even a completely broken air conditioner.
  • Clicking: This is commonly heard when an AC begins to “hard start,” struggle as it tries to turn the compressor on. The clicking sound indicates a failing capacitor, the device that transmits voltage to the motors to start and/or keep them running. The capacitor needs to be replaced before it fails or creates more stress from hard starting in the AC.
  • Shrieking, grinding: These mechanical noises often mean something is wrong with the motors: loss of lubricant, layers of dust and grime, or overheating. Without attention, this will lead to a motor burning out, in which case it will need a complete replacement.
  • Striking, slapping: Should the outdoor fan suffer from damage, its bent blades will begin to strike against the casing, causing these loud noises. If not fixed soon, the dislodged blades will cause damage throughout the cabinet.

Do not open up either cabinet of your air conditioner and attempt to diagnose the source of the sounds and fix it. ACs are complex pieces of equipment that need professionals to handle their repair work. When one of these warning sounds starts to bother the peace in your home, call Cool Air Mechanical for air conditioning service in Roswell, GA. We have many years of experience and can take care of all your AC-related needs (and your heating needs in the winter as well). Give us a call today to schedule your next service appointment.

Is a Packaged Air Conditioning Unit Better Than a Split System?

June 13th, 2014 by Stephen Andrews

For cooling down a home during the summer, the standard method is a “split system” central air conditioner. A split system AC uses two cabinets, one indoors and one outdoors. The indoor cabinet houses the evaporator coil and the air handler. It connects through a refrigerant line and power line to the outdoor unit, which contains the condenser coil, compressor, and fan.

There is another configuration option, one that is common for businesses, but which professionals can also install for a home: packaged air conditioning. These systems only have one cabinet, usually stored outside (they can also be placed inside, but outdoors is more common). The cabinet contains all the components: the compressor, condenser, evaporator, blower, fan, and the necessary electrical parts.

Which type of system should you have for your air conditioning installation in Lawrenceville, GA? That depends on a number of factors: neither is inherently better than the other, but for your home one of them is probably the superior choice. Contact Cool Air Mechanical to speak to our installers to find out which choice will deliver you the best cooling this summer.

Why Choose a Packaged Air Conditioner

The biggest advantage of going with a packaged AC is convenience. Repair and maintenance on these systems is a snap for professionals, since they only have to work with one cabinet and can easily locate problems and repair them, and maintenance sessions will go by fast. They also cost less to install (only one cabinet to place), and with all the components stored in one location—usually outdoors—they save space.

Why Choose a Split Air Conditioner

In general, split air conditioning systems are more efficient: packaged air conditioners cannot achieve the same high SEER that the best split ACs can. The most efficient split air conditioners can reach an astonishing 23 SEER. By comparison, packaged units have a range of 10–18 SEER. Since many homes are designed with a split system already in mind, they are often more convenient to install than a packaged air conditioner.

The Deciding Factor

When it comes to your home, which system wins out? The factor that will make the difference is your home’s layout. A newer home will probably have construction to fit with a split system because they are geared toward energy savings—and the packaged air conditioner lags behind in this regard. Older homes, however, can benefit enormously from the space-saving power of a packaged AC. Ask your installer which type of air conditioning system is best for your house.

Cool Air Mechanical has the experience and skill to pick out the ideal system for your air conditioning system in Lawrenceville, GA this summer. Whether packaged or split, the AC we install will be the right one for you—and it will be installed right as well.

How Your Ducts Become Dirty

June 12th, 2014 by Stephen Andrews

How clean are the ducts in your home? If you haven’t scheduled regular professional cleaning for them in two years or more, you might be in for an unpleasant surprise if you reach down inside one of the vents with a handheld mirror to get a view of the interior. No matter how clean a home you try to keep, your ducts will get dirty over time to the point that the dust, dirt, and other debris inside can have a negative impact on your indoor air quality and lower the performance of your heater and air conditioner, even leading to damaging them.

We’ll explain how your ducts get this way to help you understand why regular, professional duct cleaning in Marietta, GA is essential for maintaining clean air and a working HVAC system. To schedule quality ductwork cleaning, contact our air quality specialists at Cool Air Mechanical today.

How a Home’s Ductwork Becomes Dirty

Although a cleaner house will slow down how fast dust and dirt gather inside a ventilation system, no amount of cleanliness can stop the eventual build-up. The reason for this is that the ventilation system is constantly circulating the air inside your home, and any dirt and dust inside the rooms will eventually find their way into the ductwork. Since the ducts are sealed along their length to prevent the loss of air pressure, they are basically dust traps: as dirt and other particles enter the ducts, they become trapped inside with no way to escape (except to get blown back out into your air or dragged into the AC). Dust that you sweep up will fly into the air and into the return vents, joining the rest of the dust. Homes have such effective air sealing on them today to make them more energy efficient that there are few places to which the dust inside your house can escape.

You can ventilate your home with open doors and windows, but this 1) will not reach into and clean out the ducts, and 2) may bring in more foreign particles which will then become trapped in the house and circulated through the ventilation with the rest of the dust.

There is another potential threat to the interior of your ducts: mold. Mold spores can enter the ventilation system and take hold and start to grow in humid weather. If your home suffers from unusually high humidity, this can become a serious issue.

However, you have help available for all these problems: the indoor air quality experts at Cool Air Mechanical. We offer professional duct cleaning and other indoor air quality service in Marietta, GA that will remove this reservoir of dust and dirt from your home. We also remediate mold with UV germicidal lights, and offer dehumidifiers to help reduce the risk of mold growth (and increase your summer comfort). Give us a call today for cleaner ducts.