Air On Demand Blog: Posts Tagged ‘South Dade’

What the ENERGY STAR Means for Your Air Conditioning

Wednesday, August 6th, 2014

While cost is an important consideration for most homeowners when shopping for a new air conditioner, the price tag should not be your sole consideration when searching for a system that will save you money. Air conditioning accounts for a large portion of energy bills in the summer, so you should look for an energy-efficient system that will save money over time.

The U.S. government requires all air conditioning manufacturers to provide information about the efficiency of the unit. The rating system used to identify this is known as SEER (Seasonal Energy Efficiency Ratio). The SEER is calculated by determining the cooling capacity of an air conditioner in a standard cooling season and dividing this number by its total energy consumption. While the government only requires air conditioners to have a SEER of 13 or higher in order to be sold in the U.S., systems must have a SEER of 14 or greater to earn the approval of the Environmental Protection Agency.

The EPA has established a set of guidelines that air conditioners must meet to earn the ENERGY STAR. While a high SEER is an important consideration when purchasing a new air conditioner, you should also pay attention to whether or not your new system has received this distinguished symbol. ENERGY STAR systems meet strict guidelines of both performance and efficiency and release fewer pollutants into the air than conventional models.

While the ENERGY STAR label can help you determine energy efficiency, a high number alone will not save you money year after year. First, the system must be installed properly so that it doesn’t run into problems early on. Second, proper maintenance is necessary to ensure that your system remains efficient throughout its life. Be sure to clean or replace air filters about once a month and schedule maintenance every year. Scheduling maintenance with an AC technician helps restore some efficiency and improve performance.

An AC technician can help you find a system with the ENERGY STAR label, calculate the proper size, and professionally install the unit. For professional air conditioning service in South Dade, pick up the phone and call Air on Demand today to speak with a qualified technician about your AC needs.

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Miami, FL AC Guide: How Installation Affects Cooling Performance

Tuesday, June 4th, 2013

If you want to stay cool during the heat and humidity of the summer, you need a good air conditioning system installed by a qualified professional. There’s simply no substitute for the expertise, knowledge, and training of an AC technician. Today’s air conditioners are complicated machines, with various components, materials, and overlapping systems. Your new AC is a major investment in the future of your home comfort. But it will perform neither effectively nor efficiently if it is not professionally installed. By hiring an excellent contractor to install your quality equipment, you can ensure that it operates well for the years to come. If you’re in need of excellent Miami, FL air conditioning installation, call Air on Demand today.

In light of the connection between installation quality and performance, let’s explore a few important considerations:

  • Size: Bigger is not better when it comes to your new cooling system. Your AC requires precise sizing if it is to work well. If it is too small, then it will be inadequate to the task of cooling your home. It may have to run constantly in order to produce what in the end might be only inadequate cooling. This can lead to overheated components and high energy costs. If it is too large, then it may be subject to frequent short-cycling (turning on and off). This leads to energy inefficiency and increased wear and tear on the system. Your overly large system may even be difficult to control.
  • Refrigerant: The refrigerant that courses through the coils of your new AC needs to be just right in order to absorb and dissipate thermal energy effectively. If it is too low, then your new AC will simply not work well, no matter what.
  • SEER: When you work with a professional contractor, he or she will be able to advise you on what Seasonal Energy Efficiency Ratio rating is right for your home. The higher the number, the greater efficiency between electrical energy input and cooling output. You should always look for a high SEER rating for your new AC, but energy efficiency is determined by more than just this number; it also depends on ductwork integrity and the insulation of your home.

Call Air on Demand today for comprehensive Miami, FL air conditioning installation services so that you can get the most from your new AC.

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Miami Air Conditioning Guide: Signs of a Damaged AC Compressor

Monday, October 1st, 2012

Without a good compressor, your Miami AC system simply won’t work properly. That’s because the compressor is where the actual cooling takes place. Without a working compressor, your air conditioner is really little more than a complicated, oversized fan that uses a lot of energy to run.

There are any number of reasons that compressors can break down. While it can be hard to determine on your own whether the compressor is really the problem, there are some warning signs that can let you know it’s time to call in a professional to repair your Miami AC system.

What to Look For

  • Inadequate Cooling – If the air coming from your vents is warm, it’s likely your compressor isn’t working properly. Air being blown through the system means that your air conditioner is doing everything it normally does except for cool the air before it delivers it to your living space, and that cooling is the job of the compressor.
  • Strange Sounds – Any type of rattling, growling or squealing coming from your air conditioner can indicate a compressor problem.
  • Short Circuits – An air conditioner with a bad compressor will trip the circuit breaker with some regularity. If you notice this happening with your system, you should call a professional immediately.
  • Hard Starting –When we say an air conditioner has a hard start it means that different parts of the system seem to turn on independently of each other, preventing the system from starting smoothly. This is usually the first thing you’ll notice if you have a problem with your compressor.

While you can’t know for sure that your compressor is broken, you should always call for professional repairs whenever you notice any of the signs listed above. Only a properly trained technician can correctly diagnose the problem and make the necessary repairs.

For air conditioning repair in the Miami area, give Air On Demand a call!

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Miami AC Guide: Why Short Cycling on an AC Unit Can Decrease Efficiency

Tuesday, September 4th, 2012

Your Miami air conditioner’s compressor is more efficient the longer it is on. In fact, anything less than 5 minutes shows a sharp and sudden decrease in efficiency, largely due to how long it takes for the compressor to start cooling the air. It takes time to compress refrigerant and start removing moisture and heat. It takes at least five minutes for condensate to start running down the coil to the drain. If it cannot do this it simply evaporates back into the air supply and the efficiency and comfort level go down.

Generally speaking, an air conditioner is set to run on cycles that are as long as possible. So, if the heat load on a hot day for your air conditioner is only 50%, your system will turn on for 50% of the hour, turning on for 10 minutes, then off for 10 minutes, then on for 10 minutes at so on. However, if your air conditioner is sized to reach a higher percentage – closer to 75% on a particularly hot day – the system will remain on much longer.

On the flip side, if your system is not working properly or if it is too large, it can short cycle, meaning it produces a lot of cold air and then turns off after 5 minutes. That, in turn, means it can’t reach the efficiency levels it should. While part of this has to do with proper design of your HVAC system, another part is related to the operation of that system. Two-stage compression can help with this as well by running the system at a lower level if it is not too hot outside but you still need air conditioning.

If you notice your Miami air conditioner running on short cycles, it is important that you call Air On Demand to inspect it. While it could be a design issue, it could also be related to a bad thermostat, a refrigerant leak or even a problem with your compressor. In some cases, a simple fix and an upgrade to your thermostat can eliminate the issue. In others, replacement may be needed.

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Miami Air Conditioning Repair Guide: Causes of an AC Fan Running But Not Cooling

Monday, August 6th, 2012

When an AC fan and the corresponding compressor and condenser unit run normally the result is properly cooled indoor air.  However, there are instances when an AC fan runs with no cooled air flowing in it.  Air on Demand is a Miami air conditioning company that provides AC services such as air conditioning diagnostics and repair.  We can help you understand the causes of an AC fan running but not cooling the indoor air.

Causes of an AC Fan Running but Not Cooling

The central air conditioner fan is designed to blow the cold air which has already been created throughout a duct system and into various rooms.  Generally if the AC fan is still blowing but the air is not cold there are a few main AC problems which could be the culprit.

  • There could be a clogged condenser or dirty evaporator coils which will result in insufficient air-flow through the vents.
  • A refrigerant leak could cause refrigerant levels and refrigerant charge to fall below what is necessary to actually cool indoor air.
  • The thermostat could be acting up, which means electrical wiring may be to blame.
  • The ventilator fan may be failing and thus running more frequently than it should.
  • A faulty relay could be causing the air and the heat to both be running at the same time which means air is tepid rather than cooled.
  • Poor insulation in a building or portions of a building could mean that air conditioned air that comes out of the vents cooled is not able to remain cool for very long because outdoor temperatures are heating the inside much faster than if proper insulation were acquired.
  • Duct systems may also have leaks or insufficient insulation, which would cause air to flow into unused spaces like behind walls or under floors, rather than inside rooms where the vents lead.
  • Dirty filters could be blocking proper air-flow throughout the ducts.
  • A tripped circuit breaker for the outside condenser/compressor unit could leave the indoor air handling evaporator unit working without the cold air to accompany it.

It is easy to see that there can be any number of AC problems which could cause an air conditioner fan to continue blowing while the air indoors is never properly cooled.  Let the Miami air conditioning specialists at Air on Demand do a proper AC inspection to determine the true root cause of the AC problem and provide you with quality air conditioning repair services that will have your AC system back to blowing cold air in no time.

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Ductwork and Your Pinecrest Air Conditioner

Monday, July 23rd, 2012

When temperatures start to soar central air conditioning makes our homes much more comfortable. Unfortunately, the system of ductwork that it these systems use can be responsible for a lot of efficiency loss. There are a few ways in which your ductwork may be wasting cooling power generated by your Pinecrest air conditioner. Here’s a list of some of the worst offenders.

  • Leakage on the return or supply sides of your ducts is a serious problem. Your home may still be cool but there is a lot of energy being wasted. Properly sealed ducts are a must if you want an efficiently operating cooling system.
  • Improper sizing of ducts is also a serious detriment to the efficiency of your cooling system. Remember, it is important to purchase an air conditioner that is appropriately sized for your home, but improperly sized ducts are just as inefficient. Be sure that you are working with a contractor to ensure that your ducts are properly sized and connected.
  • An undersized or restrictive register or return grill can also cost you money when you run your air conditioner. There’s no point in cooling air if it can’t get through the ductwork to your rooms. A restrictive register or return grill will trap and waste your cooled air.
  • Sizing and air flow aren’t the only issues that your ductwork may have. Efficiency can also be adversely affected by poor layout of your ducts. Any dead ends or narrow turns are going to affect the distribution of your air. If your ductwork was installed hastily and was not meticulously planned out, it’s more than likely that there are a few spots wasting energy.
  • Finally, a little insulation on your ducts can go a long way. If your ducts are not properly insulated and they are too warm then the cool air intended for your home will wind up cooling your ducts instead. Have a professional inspect the insulation on your ducts, and see if you can get a better performance out of them.

Hopefully this list has given you an idea of the importance that lies behind your Pinecrest air conditioner’s ductwork. When properly installed, insulated and maintained, forced air duct systems deliver strong cooling power and good efficiency. However, when the job is rushed and improperly done, your ductwork can account for a huge amount of lost energy. When you want air conditioning installed, or if you want to improve on your existing system, call Air On Demand. We’ll make sure that you’re getting the most out of your system, ducts and all.

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