What Is the Difference between Rooftop Units and Other ACs?

July 21st, 2014

When it comes to commercial air conditioning, the great workhorses are rooftop units. People are accustomed to seeing rows of air conditioner cabinets along the top of office and retail buildings. Some commercial buildings still use “split” systems that are similar to the ones seen in residential housing, while restaurants and bars often use ductless heat pumps that send conditioned air wall-mounted blowers that are connected to an outdoor condenser. But the rooftop unit, because of its space saving quality and ease of service, continues to be the most popular for business use.

What actually differentiates rooftop units from other HVAC systems, aside from their location? We’ll look into this, and it may help you make the decision for what sort of heating and cooling system you want for your business location.

For detailed information on how rooftop units in Coral Gables, FL will work for your company, call Air on Demand and ask about commercial HVAC services today.

What Sets the Rooftop Unit Apart From Other ACs

Rooftop units are what are known as package units in the HVAC industry. A package unit is set apart from a split system, which is the common type of air conditioner/heat pump found in houses. A split system has an outdoor cabinet and an indoor cabinet with different sets of components. The outdoor cabinet has a compressor, fan, and a condenser coil; the indoor cabinet has a blower, dampers, air handler, and evaporator coil, and hooks into the ventilation system.

With a rooftop package unit, all the components are housed in one cabinet stored on the top of the building. Both sets of coils, to release and absorb heat, are in the cabinet along with the compressors and the fans. The unit connects directly into the building’s ventilation system to circulate the air.

Rooftop units can be configured either as air conditioners, or as heat pump capable of both heating and cooling. With installation of a humidistat on a rooftop unit, it can also control humidity and permit the ventilation of fresh air into the system; this is a benefit that split systems do not have, and it is a great asset for increasing indoor air quality.

Rooftop units come in an enormous array of types and sizes, and you will need to have professionals help you select the right unit or units to install for your business. The comfort of your employees, customers, and/or clients rests on making the correct decision for rooftop units in Coral Gables, FL, so make sure you have an experience commercial HVAC company handling the work for you: call Air on Demand. We carry Trane rooftop units from 1.5 tons up to 162 tons of cooling capacity.

How to Choose the Right Air Conditioning Installation Service

July 15th, 2014

If you need a new air conditioner in South Miami, FL, there’s no time to wait! You need to find an air conditioning installation service right away, but how do you choose the right one? Air conditioning installation is a delicate process, and you want to be certain your technician will be honest and dependable. The following guide can help you choose an AC technician that will do the job right.

Air conditioning installation is an intricate process that should always be handled by a professional. If your air conditioning system is not installed correctly, you may run into many costly repair issues later on or high energy bills. For example, if your AC unit is not sized properly for your home, your unit may have to work harder to keep you cool. This not only drives up energy costs, but also causes some parts to wear out sooner than they should, which means you’ll have to pay to replace them sooner than is necessary. For this reason, you should never attempt installation on your own.

The air conditioning installation service you choose should discuss pricing options with you during your scheduled estimate. Air conditioners are available within a number of price ranges. If you’d like to save energy every month, ask your AC technician if there is a system available with a higher SEER (Seasonal Energy Efficiency Ratio). A lower SEER may help you save on the initial cost of installation, but your energy bills may be higher every month.

Furthermore, the air conditioning installation technician you choose should discuss all of the different air conditioning systems available to you. Your technician should be willing to discuss ductless and central air conditioning options for homes with unique needs.

You should also choose an air conditioning installation service that offers repair and maintenance services as well. If your technician does a good job, you may choose to contact the company for future repairs. This will be easier for you and will help you be sure the technician knows the ins and outs of the particular system installed in your home.

For professional air conditioning installation in South Miami, FL, call Air on Demand today!

Signs You Need to Call for Commercial HVAC Services

July 10th, 2014

If your business is housed in a building with a properly installed HVAC system to provide heating and cooling, you shouldn’t encounter many problems with operating. However, because commercial systems are required to run for many hours—far more than any residential system—they will suffer from a large amount of wear and tear. Although regular maintenance will go a long way to alleviating this issue, you may still need to call in professionals to handles repairs.

There are some of the signs that you may need call on commercial HVAC services in Kendall, FL. Make sure that you contact a company with experience on heating and cooling businesses; this isn’t a job that anyone familiar with residential HVAC can handle. Look to Air on Demand and our NATE-certified technicians for the next time you need service to restore the comfort of your workplace.

Here Are Signs to Call for Commercial HVAC Services

  • Uneven temperatures: A common issue that can occur in commercial HVAC systems is trouble with the zone dampers and the thermostats. Commercial systems are larger than residential ones, and they need to use multiple thermostats to control a large number of zones. When people in the workspace start to complain about rooms that are too stuffy or too cold, the issue may be with the zone control. It’s also possible that the packaged rooftop unit has lost cooling/heating power (such as because of leaking refrigerant). Call for professionals to look into the uneven temperatures.
  • Appearance of water condensation in the workplace: This is an issue specific to a Miami summer. Because air conditioning helps to combat high humidity levels (when it absorbs heat from the air, it also absorbs moisture), when it starts to malfunction, humidity inside the building will rise. This will first show up as condensation along windows and other external surfaces. At the first sign of condensation problems, call for assistance from repair professionals.
  • Strange smells from the vents: Acrid or moldy/musty smells coming from the vents usually point to repair issues. The burning smells sometimes point toward motor and electrical problems inside the rooftop unit(s) that will need to have technicians replace the burnt out parts. Musty and moldy smells usually indicate that there are leaks and breaks along the ventilation system that will require sealing. Bring in commercial specialists to look over the system and determine where the issues are and then fix them.

Air on Demand takes pride in the skill of our team for providing quality HVAC services in Kendall, FL. When the comfort of your employees, customers, clients, and/or tenants is in jeopardy because of a malfunctioning HVAC system, make us your first call. Contact us today and let us know about you commercial HVAC needs.

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

July 4th, 2014

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

How Can a Ductless Air Conditioning Installation Save Me Money?

June 27th, 2014

Here in Doral, FL, you need a reliable air conditioner to keep your home cool all summer long. However, your current air conditioning system might be costing you a lot of money in the summer months. If your home AC system causes your energy bills to soar this summer, consider a ductless system to cut down on your energy consumption.

If you decide a ductless mini split system is best for you, contact Air on Demand for ductless air conditioning installation service.

What Is a Ductless Mini Split System?

A ductless mini split system provides a flexible solution for both cooling and heating your home. It’s divided into two parts: an outdoor compressor/condenser unit and one or more indoor units. Instead of using ducts throughout the home, multiple indoor air handlers can be installed in different rooms or zones to provide varied temperatures in each area.

The size of these indoor air handlers contrasts significantly with those utilized by central air units and heat pumps.

How Can a Ductless System Cut Energy Bills?

One way that ductless mini split systems help you to save money every month on your energy bill is by allowing you to control the temperature of each room. If your family is gathered in the living room, for example, you may choose to adjust the temperature in areas of the home that are not in use to cut cooling costs.

Another way a ductless system helps you save on your energy bills is by cutting potential energy loss associated with AC systems that utilize ducts. Faulty or leaky ductwork accounts for a large percentage of energy loss, forcing central AC systems to work harder to compensate and costing you more on your energy bills.

To start saving money on your energy bills with a ductless air conditioning installation, contact Air on Demand today!

3 Causes of Low Air Flow

June 20th, 2014

One of the major warning signs that an air conditioning system (or a forced-air heater) has developed a serious malfunction is when the airflow coming from the registers into the rooms drops. You will probably first notice this as uneven cooling in the rooms and an extended period required to reach the desired temperature. When you check on the vents and find that air is only sluggishly coming out, it’s time to call for experts in AC repair to investigate the problem.

There are a few different reasons that the airflow from your cooling system might drop, and it will take trained professionals to identify the specific cause and address it. Rely on the HVAC experts at Air on Demand when you need air conditioning repair in South Miami, FL. We have a staff of NATE-certified technicians to make sure you receive the best quality repairs for your cooling, done fast and right the first time.

3 Possible Reasons for Low Airflow

  • Clogged air filter: This is the most common cause of low airflow, and also one that is easily preventable. The air filter in your air conditioner catches particles inside the air that come through the return vent to prevent them from harming the interior of the cabinet. After a month of regular cooling, the filter will have a large amount of dust, lint, and other debris inside it, and this will close off airflow into and out of the system. Change the filter once a month throughout the summer (and any other time that the AC runs regularly) to keep this from happening, and call for repairs if it has caused a severe reduction in airflow.
  • Leaky ductwork: The problem may not originate inside the air conditioner itself, but from the ventilation system that distributes the air. Leaks from breaks and holes inside the ductwork will cause air pressure to drop inside the ventilation system, sometimes as much as 50%. This needs special ductwork repair technicians to handle: they will track down the leaks in the ventilation system and seal them.
  • Blower troubles: The blower in the air handler (the indoor unit of an air conditioner) sends air from the return vents past the evaporator coil and then into the ductwork. If the blower begins to fail due to problems with its motor or the electrical system, the airflow will start to plummet. This also means less efficient cooling because of the reduction of air across the coil. Blower problems need skilled technical work to fix.

Our professional team at Air on Demand offer quality air conditioning services in South Miami, FL. You can count on us to solve whatever problems you have with your airflow this summer (and we can take care of airflow from your heater as well during the winter). Give us a call today to schedule your next AC service appointment with us.

Signs of Low Refrigerant Levels in Your Air Conditioner

June 13th, 2014

Low refrigerant is one of the more common causes of repair needs for air conditioning systems. You most likely won’t see a refrigerant leak, but there are symptoms of which you should be aware when it comes to your air conditioning in Richmond Heights, FL.

A Closed System

Your air conditioner is a closed system; in other words, it doesn’t require a fuel like oil in order to run. All your air conditioner’s components are housed in either the indoor or outdoor unit, and the refrigerant, the chemical used in cooling the air, travels in a continuous loop; this means the refrigerant level never changes for the life of your system – unless a leak occurs.

Signs of Low Refrigerant

Refrigerant leaks can start out quite small, but one thing you can count on is that they will get worse over time. Here are some signs that your refrigerant may have sprung a leak:

  • Warm Air – when the refrigerant is low, the heating and cooling process within your system can’t work properly. The result can be warm air blowing into your system because the air isn’t being conditioned.
  • Icing – low refrigerant means that certain parts of your air conditioner are staying too hot while others are staying too cold. This is because the heat release isn’t occurring as it should due to the lower level of refrigerant. When one area of your AC is very warm and the other is cold, condensation can develop – but because the cold part is very cold, that condensation freezes, causing ice to develop on your air conditioner.
  • A/C Won’t Turn On – some systems have a safety switch that triggers when the refrigerant in the system runs low. The switch is designed to stop your air conditioner from running if the refrigerant drops to a specific level. If your AC has one of these switches, and there is a refrigerant leak, your system may not turn on.

Don’t Just Recharge – Get It Fixed

Simply recharging your refrigerant isn’t enough to fix your problem – the leak needs to be repaired. Otherwise, you are refilling your refrigerant that will just leak back out. Refrigerant leaks can be challenging to find, and it’s important to know what you are doing when repairing a refrigerant leak. The bottom line: it’s best to have a professional check and repair any issues you may be experiencing with the refrigerant in your air conditioner.

Think you may have a refrigerant leak? Call Air On Demand today and schedule an appointment with one of our Richmond Heights air conditioning experts.

Condensation Problems with Your Air Conditioning System

June 6th, 2014

If you listen closely to your air conditioning while it is running, you will sometimes hear the sound of dripping water. This is a natural part of the AC’s operation: during evaporation, which occurs along the indoor coil, water moisture forms across the coil which is removed from the air along with the heat. This condensation moisture then drips down from the coil, where a condensate pan catches it. A drain and pump removes the water moisture from the pan and out into your home’s standard wastewater system—and you don’t have to worry about it.

At least most of the time you won’t have to worry about it. In humid climates like those in Florida, a number of problems can occur because of excess moisture pulled from the muggy air and the rapid growth of mold and mildew. This can lead to water leaking from you air conditioner, a serious and often costly issue that needs immediate repair work.

Call Air on Demand when you need assistance with a malfunctioning and leaking air conditioning in Homestead, FL. We have NATE-certified technicians on staff to bring you the trained service that will get the job done right the first time.

What Can Go Wrong With Condensation in an Air Conditioner

The condensate pan in an AC is not very deep, so it only takes a slow drain or basic clog to cause the pan to begin to overflow and send water out into your home. This will lead to water damage that can sometimes wrack up thousands of dollars in expenses, especially if it continues unnoticed for long enough. The extra water will also encourage the growth of molds and mildew, which will not only further cause damage to building material, but pose a health risk.

Another potential problem from dripping water is that it could cause rust and corrosion in your furnace. If you use a furnace along with your air conditioner, the furnace is usually located right beneath the AC, and the water dripping from the condensate pan will fall down onto the metal of the furnace.

The most common reason for a plug in the drain of a condensate pan is algal growth. This is a common issue in Florida’s damp weather. Corrosion can also cause the drain to break away and allow the condensate to fall right through a hole. To solve these problems, you should contact a professional repair technician to detach the condensate drain, find the issue, and then apply the necessary repairs or replacements.

Don’t ignore water dripping from your air conditioner: it means a serious condensation problem that will only grow worse. Give Air on Demand a call, and our skilled technicians will get your air conditioning in Homestead, FL back to prime shape in no time.

Advantages of Rooftop Air Conditioning Units

May 30th, 2014

When it comes to keeping your business comfortable during a long Florida summer (and on into the warm fall and even times during winter), you need to have the most durable air conditioners working for you. If you have yet to install a rooftop package unit, we suggest that you look into this possibility for your next installment. Rooftop package units have numerous advantages.

Whatever HVAC system you choose to install for your business, you should turn to Air on Demand to handle the installation work as well as the regular maintenance and any repairs the system may need during its long services life. Call us today and talk to one of our NATE-certified technicians about how we can install a rooftop unit in Kendall, FL for your company.

Rooftop unit benefits

  • No need for a split unit: The standard central air conditioning system is a split system with an indoor unit and outdoor unit, which takes up extra space inside your business that you could more efficiently use for other purposes. With a rooftop package unit, all the components are stored in a single cabinet: the compressor, the evaporator coil, the condenser coil, and the blower fans. This not only frees up space inside your building, it also reduces problems from noise pollution, so you have a quieter workspace.
  • (Almost) no space limitations: The roof is the limit when it comes to the size of your commercial AC. You can have multiple rooftop package units together to supply as much air conditioning power to your business as necessary, without using up one extra inch of valuable workspace. No matter how big or how many rooftop units you need, they won’t become eyesores for the company either, since they remain well out of sight of all but helicopters.
  • Heat pump option: You can choose to have your rooftop AC installed as a heat pump, and that means you’ll have heating for the short winters taken care of at the same time—and no extra space needs to be sacrificed.
  • Humidity controls: Maintaining balances humidity is an important part of everyday life in Florida homes and businesses. Packaged rooftop units from Trane come with humidistat technology that can control the moisture level inside your business and regulate the introduction of fresh air, creating a work environment comfortable for everyone.

Turn to commercial professionals

To care for a rooftop unit or install an AC unit  in Kendall, FL requires the work of commercial HVAC specialists. Don’t trust this job to just anybody with a license: look to certified commercial experts, like those at Air on Demand. We have a long partnership with Trane to provide you with a variety of the finest products for commercial heating and cooling. Contact us today to prepare for the most comfortable summer your business has yet experienced.

3 Problems with Your Air Conditioning Fan That Require Repairs

May 23rd, 2014

The standard central air conditioning system in a home has two large fans. A blower in the inside cabinet draws warm air through the return vents and sends it across the evaporator coil, where it loses heat, and then moves it out into the ventilation system. The fan housed in the outdoor cabinet draws outside air across the condensing coil, where it releases heat.

As key mechanical components inside an air conditioner, the fans need to remain in top operating shape or else the performance of the system will be in jeopardy. If you notice a drop in airflow from your vents, feel insufficient levels of cooling, or hear loud striking sounds from the AC, don’t hesitate to call professional technicians to handle repairs. You’ll find the NATE-certified staff at Air on Demand ready to help you with your air conditioning in Doral, FL, no matter the trouble.

3 Repair Issues With AC Fans

  1. Broken fan belt: This is a problem for older air conditioners that still use blower fan belts. (More recent models use direct motors.) The fan belt is more susceptible to damage than other parts of the fan, and the intrusion of debris into the cabinet can sometimes cause the belt to break. The belt can also wear down from age, causing it to fray and tear apart. A loose belt will make a loud clanging noise in the cabinet, and a fraying belt will create a clicking sound, so call for repairs as soon as you hear anything unusual.
  2. Burnt out motor: The motor that runs the fan (either a direct motor or using a fan belt) can suffer from strain that will cause it to burn out and fuse the wiring inside the case. When this occurs, the fan will not move at all and the motor will need to be replaced. A motor undergoing excess stress will start to make screeching and grinding noises, and sometimes repair technicians alerted in time can repair them instead of replacing them.
  3. Bent fan blades: This trouble is more common for the outdoor blower because large debris such as stones and branches. Bent blades will begin to strike the fan casing and will rapidly inflict further damage to the air conditioner if not repaired. When you hear the sound of metal striking metal coming from the cabinet, call for repairs right away.

If fan problems are not fixed soon, not only will it risk further repair needs, the loss of airflow will impair heat exchange and threaten your supply of cool air. Opening the cabinet to fiddle with the fan on your own is not the way to handle the trouble, since you can potentially cause more issues with the unit. Instead, call Air on Demand and speak to our experienced staff. We will send out AC repair technicians who will take care of your air conditioner in Doral, FL so you will have the best airflow and performance from your AC for the rest of the summer. Give us a call today.