The Clean Air Act Blog: Archive for July, 2012

Do Humidity Levels Affect My Air Conditioning System?

Monday, July 30th, 2012

When humidity levels are high outside, you’ve probably noticed that your air conditioner helps to remove some of the excess moisture from the air inside your home. While most AC systems have a built-in dehumidifier, they are not a substitute for a whole-home dehumidifier. When you are looking for Portland  air conditioner services, call The Clean Air Act Inc. We can go over your options for installing a whole house humidifier to work with your AC system to create a comfortable indoor environment. Here are a few reasons many homeowners choose to install a dehumidifier for the whole house.

When you air conditioner is removing a lot of moisture from the air, it uses more energy to keep your home cool. If you are running your air conditioner only to dehumidify, you could be wasting a lot of energy. Because your system has to use more energy during times when the weather is particularly humid, it may increase your utility bills. You will be able to more effectively control the relative humidity inside your home by installing a dehumidifier to work with your air conditioning system.

A dehumidifier that is specially designed to only remove moisture from the air can also help reduce the load on your air conditioning system. On days when it is humid with moderate temperatures, you can just run the dehumidifier to keep your home comfortable during those times. Because your AC system will need to run less often, it will have less wear and tear on its components, which helps it last longer. Using a dehumidifier may also reduce the need for frequent air conditioner repairs.

Overall, dehumidifiers use much less energy and remove moisture more effectively than running the AC system alone, which helps to lower your energy bills and make your home more comfortable. To learn more about installing a a whole home dehumidifier in Portland, give Clean Air Act Inc. a call today!

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How Do I Determine the Cooling Capacity of My Central AC or Heat Pump System?

Monday, July 23rd, 2012

For any type of air conditioning system in Gresham, the cooling capacity is measured in BTU’s. This is important to know if the system doesn’t seem to be adequately cooking your home, and there are many different ways to check the cooling capacity of your AC system.

1. Air Conditioning System’s Age and Serial Numbers

An air conditioner’s age will usually give you a general idea for its cooling capacity, and if you aren’t sure, you can always check the serial number. Because serial number formats vary by the year the equipment was made, you can check to see how old an air conditioner is from looking at the serial number.

The first four digits of every serial number is the week and year the unit was manufactured.  For example, the serial# 1188E53294 on a compressor unit tells us that it was made between 1980 and 1990, and to be more exact, week 11 in 1988.

2. Air Conditioner’s Model Number

You should also look at the model number for your specific model because some manufacturers also vary how they assign each number in the serial number; however, they usually stand for tonnage or MBTUH. You can always call us if you aren’t sure how to read the serial number or model number.

3. AC Equipment’s RLA Numbers

RLA stands for “Rated Load Amps,” which means that it’s the manufacturer’s rate of the cooling capacity (also known as the draw) or load while it’s operating (minus the draw when you start the system). Most air conditioning compressor or condenser units will draw 5 to 6 RLA per ton of cooling capacity. You can check the data tag on the compressor for the RLA rating; however, this will need to be translated into BTUH for the total cooling capacity.

Feel free to call one of the Gresham air conditioning experts at Clean Air Act if you have any questions how to calculate your AC system’s cooling capacity.

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Why is My Central Air Conditioner Making Noise?

Monday, July 16th, 2012

A good air conditioner is a life saver in the midst of a hot and sticky summer in Portland, but just because the system makes you comfortable and makes the hottest months bearable doesn’t mean you want to hear it clanging and banging all summer. If you notice excess noise coming from your air conditioner, it might be a problem that can be fixed by your technician. Here are some common causes of excess noise from an air conditioner and what you can do to fix them.

  • Blower – The blower is a motor and fan blade assembly. If the blade touches the housing or if the motor needs a tune up, it might start to make excess noise. Loose screws, foreign objects, or a need for oiling or new parts will all cause noise problems but they are all easy fixes for a Portland AC professional.
  • Ductwork – If the sounds you’re hearing are in the ductwork or vents, it may be due to expansion and contraction in your ventilation system. This is normal and while it may be obnoxious, it tends not to persist during the hottest months as temperature won’t fluctuate as much.
  • Bubbling Sounds – If you hear a gurgly or bubbly noise coming from your indoor unit, it may be due to a blockage in the condensate line. The easiest solution is to have technican clean the condensate line and check for any clogs or blockages in the system.
  • Clicking Sounds – If you hear a clicking sound, it is likely from the relay or contactor in the system. If this is the case, have a professional check it right away. Electrical problems are not to be taken lightly where your air conditioner is concerned.
  • Foreign Objects – Sometimes, the condenser fan will make a lot of loud noise because foreign objects get stuck in there. Sticks, leaves, toys, food from small animals – it can all get stuck in the fans and make a tremendous amount of noise. Keep the area around your condenser unit clear of debris and check it often if you hear loud noises.

Most noises from your central air conditioning unit are explainable and can be fixed relatively easily. If you cannot find the source of the noise, however, and it is only getting worse, call the Clean Air Act Inc. before the problem grows.

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Cooling Coil or Evaporator Coil Diagnosis & Repair for Air Conditioners

Monday, July 9th, 2012

Inside the air handler of your Portland air conditioning system is a cooling coil or evaporator coil. From a home cooling perspective, this is where the magic happens: where the actual cooling occurs. So, if there is a problem with the cooling or evaporator coil, you will notice a decrease in the performance of your AC system.

You may notice that the air flow has slowed significantly or even stopped, even though you can hear the air handler running. You may also notice that the air isn’t as cool as it used to be or should be. Aside from having a house that is not cool enough, this can also cause problems like high electricity bills or damage to other parts of the air conditioner. Use this quick guide to start diagnosing and repairing the problem.

Diagnosis

For starters, just try to get a good look at the cooling coil. Some problems are obvious enough upon visual inspection that no further diagnostics or major repair is necessary.

If you are able to see the cooling coil, look for things like:

  • Dirt and debris
  • Mold
  • Staining that indicates a refrigerant leak
  • Ice or frost
  • Damaged fins on the coil

Repair

Any of these could be the culprit that is degrading the performance of your Portland AC system. Some of these you can take care of pretty simply on your own – if there is obvious debris that you can remove safely, do so – but for most repairs you will want to call in a licensed technician. Especially if the problem is something potentially hazardous like mold growth or a refrigerant leak, you don’t want to take the risk. Let a professional from Clean Air Act who is trained in safely and effectively repairing the problem take care of it, so that your home can be comfortable again.

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When Should You Check Your AC Filters?

Monday, July 2nd, 2012

The filters on your Portland air conditioning unit are vital for keeping out the dust and debris that make things like illness, allergies and air quality worse. And it’s important that you take personal responsibility for checking those filters. Sure, you have a Portland air conditioning professional visit your home once a year to check the air conditioning, but you should also check the system yourself on a semi-regular basis for possible filter degradation.

Monthly Checks

So, how often should you check? Think of it this way. There is no such thing as checking too much, but you can easily not check often enough. So, we recommend checking your filter at least once every 4 weeks. It may not always need to be changed during that four week checkup (sometimes it can last 6 weeks or longer), but it’s good to take a peek.

Why is this so important? Because filters that haven’t been checked and changed as needed have a habit of building up excess sediment and debris. Not a problem when it comes to actually working, but a huge problem when it comes to your energy bill. The harder a system has to work to keep you house cool, the more energy it draws and the more you pay to have cool air in your home. And it will break down much faster as a result of overwork and dirty filters.

Changing an AC Filter

If your filter is ready for a swap, here are some quick tips to get the job done:

  • Find Your Filters – If you don’t know where your filters are, ask your contractor on the next visit or look near the return grills by the thermostat.
  • Remove the Filters – Open the latches and pull the old filter out to check it. You should be able to see clearly through a permanent filter and a disposable one should still be white. If this isn’t the case, it’s time for a cleaning/replacement.
  • Clean the Area – Clear the grill and area of any debris and sediment that might make the filter worse after replacement.

Proper filter maintenance only takes five minutes and it will save you money every month you run your Portland AC – not a bad deal for a few minutes’ work. For any more information about air conditioning system maintenance, give Clean Air Act a call!

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