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HVAC Group

26 Posts tagged with the hvac tag
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The Heating and Air Conditioning career diploma course has now been added to the growing number of certified courses offered at Ashworth College. After completing our HVAC training, you'll  be set up to take the EPA Section 608 certification exam. In fact, Ashworth College will give you:


  • A 12-page EPA Section 608 study guide issued by the ESCO Institute to help you prepare for the exam
  • A $75 voucher that will cover all or most of the cost of writing the core section plus sections 1,2 and 3 of the EPA Section 608 Certification exam

 

With this HVAC certification and your career diploma from Ashworth College, you'll be on your way to working in your dream career.  In fact, demand for heating and air conditioning specialists is rising quickly. The U.S. Department of Labor expects a 34% increase in job opportunities in HVAC careers through 2020! This means there will be 90,300 new jobs for HVAC specialists and the demand for those with HVAC certification is even higher.

 

With the fundamental skills you learn here at Ashworth, you could be working in a variety of career fields including:

  • Building contractors
  • Heating and air conditioning franchises
  • Your own independent business
  • Residential maintenance and service companies

 

Are you excited about the new HVAC Certification? How do you think this will improve your career?

 

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Keeping the refrigerator door closed tightly is instrumental to keeping the cold in and the food safe. If you find your door isn't closing properly or your fridge isn't staying as cold as it should, it may require you to replace the seal around the door. Before calling someone who's taken online HVAC courses, like those offered at Ashworth College, try to replace the seal yourself.

 

  1. You'll be able to find a new seal at most hardware and home improvement stores. If there isn't one in your area, you can easily go online and order one.
  2. Smooth the rubber seal out to ensure there aren't any kinks or wrinkles in it. This would prevent the new seal from laying properly and forming a tight grip around the door.
  3. Typically the seal around the door is held in place by a series of screws under the rubber. If it helps, take a photo of the current seal before taking it off so you'll know how the new one is supposed to go on.
  4. Once the old seal is off, lightly screw the new one on. Once it is fitted properly, go around again and tighten screws to hold the seal in place.
  5. Test to see if your seal is tight enough by trying to slide a piece of paper into the fridge with the door shut. If you can, your seal isn't tight enough.

 

Do you have any other tips?

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Each year, many Heating and Air Conditioning specialists get together to attend the 65th Annual Air-Conditioning, Heating, and Refrigeration Expo. This year, the event was held at the Dallas Convention Center in Texas and roughly 51,000 people attended. The event showcased the latest in HVAC technologies with 1,951 companies attending with the latest products.

 

"As the largest and most comprehensive HVACR exposition, the AHR Expo attracts tens of thousands of attendees from all facets of the industry, including contractors, engineers, dealers, distributors, wholesalers, OEMs, architects, builders, industrial plant operators, facility owners and managers, agents and reps," said the event's official site.

 

For those taking online hvac training, like the course offered here at Ashworth College, and want to attend next year's expo, be in New York City Jan 21-23. It's a great place to expand your knowledge, network with members of the industry, learn about the latest in technology and so much more.

 

Would you want to attend the event?

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Check out Ashworth College's site to learn more about online HVAC Training

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Autumn HVAC Tips

Posted by Ashworth College Oct 9, 2012

October brings cooler weather and with that comes the need to start up the heater again.  Turning on the heat for the first time all year can sometimes cause the heater to smell, the pipes to make noise, or other various problems can become evident.  Thankfully, simply by taking care of your heating and air conditioning unit or by having it checked out, you can avoid having issues arise.

 

  • Before turning your heater on, be sure to clean it well.  A dirty furnace can break down faster than one that's been kept clean.  Also keep in mind, dirty furnaces circulate dirty air and you don't want to breathe all that dirt in.
  • If your heater hasn't been turned on all year, animals may have used that dormant period to make their homes in your flue pipe.  A person in HVAC careers would be able to check that for you to ensure your unit, and the animals that may reside in it, are safe.
  • Remember, it's better to check on parts now and see that they're in working order than to have them break in Decembe or January.  Preventative measures are always better than being left with no heat in the dead of winter.

 

Do you have any other tips?

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Having heat and air conditioning in your home is an important function in most homes and because of that, choosing the right person in heating and air conditioning careers to fix your home is essential.  You not only need to trust this person to do the job they're hired to do, but have achieved the necessary schooling to know what they're doing.  What else is needed to choose an HVAC specialist?  Here are a few things:

 

  • Sometimes the best trades workers are found by word of mouth.  Ask your friends and family who they have hired in the past to do maintence or repair work.  You know these people did a good job and have been trusted by people you know.
  • Ask them about their work experience.  While the lessons the specialist learned in heating and air conditioning school are important, one the job training is a must.  Hands on experience is key to being satisfied with their work.
  • More than likely, the HVAC specialist will come to your home before they do any work just to see what's wrong and give you an estimate.  If you're looking for a new technician, it's okay to get estimates from multiple people. 

 

Do you have any other tips?

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Fix An Oscillating Fan

Posted by Ashworth College Jun 14, 2012

It's important to stay cool now that the hot spring and summer months are upon us.  Besides cranking the air conditioner or opening all the windows (which could welcome unwanted bugs), many people choose to turn on an oscillating fan as a way of keeping comfortable.  Just like with any HVAC unit, an oscillating fan could break.  If it does, eHow knows how to fix it.

 

  1. Unplug the fan before any repairs are made. If the head of the fan doesn't move or makes noise when it moves, it may have loose gears or worn gears on the clutch knob. If you decide not to replace the gears or clutch knobs, the only option is to keep the head stationary.
  2. Take off the grill of the fan. Then remove all nuts, pins or clamps to remove the blade assembly from the motor. Remove the blade assembly.
  3. Check the motor housing, shaft, blades and grill to see if they need to be cleaned. Use a brush, cloth or even the attachments to your vacuum cleaner to remove any debris. Tighten the motor housing.
  4. Check the set screw for any wear or damage. Tighten the set screw if it seems loose. The set screw balances the blades. If the screw is loose, the blades will not move properly.
  5. Check the motor housing and gear assembly. If they feel loose, tighten them. If they are worn and will not tighten, then you need to replace both the motor housing and the gear assembly.
  6. Assemble the fan after tightening the motor housing and gear assembly. Lubricate the shaft of the fan with either household lubricant oil or turbine oil.

 

As a student in HVAC school, what other tips do you have?

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Summer is here and that puts a lot of extra strain on your air conditioner.  Between the hot temperatures, the overuse, and countless other factors, the summer months are taxing on an AC unit - especially one that's nearing the end of it's 12-15 year life span.  There are ways to try to extend the life of your unit and make it run more efficiently while it is alive.  Here are some tips.

 

  • Give your unit a break.  That may seem challenging in the summer months to not run the AC for a bit, but it will prolong the life of your unit.  Give it a break when you go out of town or during the day when you're at work.  By setting it on a timer, you can also have it kick on right when you're expected back so you won't be sweltering when you return.
  • Make sure your unit is safe outside.  By shielding it with an awning or overhead sun protector, you'll reduce the likelihood of it becoming overheated.  Also, check to make sure there isn't any damage to the unit or any debris on it after a storm.  This could also cause problems later on. 
  • "An ounce of prevention is worth a pound of cure," so make sure to get your unit checked out by someone in HVAC careers early on in the summer months.  This will catch any problems that may be there before the problems have a chance to get even bigger.  By simply giving it checkups, you can prolong the life of your air conditioner.
  • When the AC starts to die, and all units will, know when it's time to give up and get a new one.  Simply trying to fix the one you have long past when it should have been retired will only damage your wallet.

 

Any other advice?

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It's starting to warm up and that means turning on your air conditioner for the first time in many months.  It is possible that, because it has been out of commission for so long, your AC unit may not work properly.  Before calling someone in HVAC careers out to test it for you, see if you can do these simple tricks to test it yourself. 

 

  • The earlier you test it the better.  Starting now will give you a head start so if something is broken, you won't be on the end of the HVAC specialist's list when he comes around making house calls.  This also gives you time to get it fixed before the truly hot temperatures set in.
  • Check your air conditioning filter. There are two kinds - disposable ones you replace and ones you clean so learn which one you have before throwing it away.  Keeping these clean is important to ensuring your AC unit is working in the most efficient way possible.
  • Check your unit for air leaks.  In fact, you can lose up to 30% of your air flow if your unit is leaking which will make keeping cool a challenge.  You can test this by lighting an incesnse stick and bringing it slowly around the edges of a window unit or around the duct work.  If it's blowing you know your air is flowing properly.  If it is leaking, call a pro.
  • Trim the bushes and plants around an outdoor unit to give it room to "breathe".  Two feet of space is usually ideal. 
  • Put as little stress on your unit as possible.  Close the blinds, put your AC on a timer, or open the windows so you don't overwork it.  This will make it last longer and it will save you money.

 

Do you have any other tips?

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All over the country reports are surfacing about an unfortunate new trend in air conditioning.  Due to the high price of copper right now, air conditioning units, or pieces of outdoor units, are being stolen.  Because the units must remain outdoors, it may seem as though there is little that can be done, however, this is not the case.  One man in heating and air conditioning careers put together a list of things you can do in order to prevent your unit from theft.

 

  • Don't put landscaping, such as bushes, around your unit.  Although it seems like this will hide the unit, it actually provides cover from thieves if they come at night.  By not hiding your HVAC unit, your neighbors have a better chance of seeing something unusual happening in your yard.

 

  • Install lighting around the area of your AC unit.  Again, this will deter thieves who don't wish to get caught.

 

  • Mark copper coils with ink or engrave your address or name on them.  If the thief later tries to sell these for money, it will be obvious that these pieces were stolen.  Much like writing your name in a child's coat, this will help things get returned to you, the rightful owner.

 

  • Place a cage around your unit.  This does cost more money, but it's nothing compared to the cost of a brand new air conditioner.  Not only will this help your HVAC unit from getting stolen, it will also prevent children and pets from getting into it as well.

 

Do you have any other advice?

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If you are just now starting to look into turning your air conditioning on after the long winter, there is a possibility for it to smell.  While this typically is just an annoying side effect of letting it sit too long, it could mean something else.  Typcally, this smell signifies there has been a buildup of dust on the unit.  If that's all it is, there is no reason to call an HVAC specialist.  Here are tips from eHow to help you clean it out.

 

  1. Open the front cover of the air conditioner unit and remove the screen filter.
  2. Place the screen filter in a deep basin. Place the basin in your kitchen sink.
  3. Run lukewarm water over the screen filter until the basin is 3/4 full.
  4. While holding the screen filter firmly against the basin, dump the dirty water from the basin into your toilet and flush.
  5. Repeat steps 3 and 4 until the water in the basin is clear.
  6. Fill the basin with lukewarm water and add a cap of liquid disinfectant.
  7. Go over the screen filter twice on each side with the toothbrush to remove any lingering debris. Rinse the screen filter and lay it out to dry on newspaper.
  8. Dump the basin in your toilet. Fill the basin half way with lukewarm water, add a cap of liquid disinfectant and your clean cloth.
  9. Take the whisk broom and dust off the air conditioning unit.
  10. Remove the clean cloth from the basin. Wring it out. Wipe it over the outside of the air conditioning unit and the inside of the screen filter cover.
  11. When the screen filter is dry, place it back inside the air conditioning unit. Turn the unit on. If a mildew odor still exists, repeat steps 1 through 11.

 

Does this help?

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1

Fix Your Heat Pump

Posted by Ashworth College Nov 22, 2011

Heat pumps are vital sources of both air conditioning and heat.  Using two units, one indoor and one outdoor, the heating system draws heat in the winter and cooler air in the warmer months from outdoors while distributes it through your home.  For these reasons, it is important to fix the heat pump asap if it breaks.  You can call an hvac specialist or attempt to do it yourself.  eHow has tips for how to fix it no matter who's doing the fixing:

 

  1. Unplug the unit from its power source.
  2. Determine if the pump is powered. Open the small box located by the outside heat pump to access two circuit breakers protecting the electrical circuits which provide power to the air handler and heat pump condenser. If the unit does not heat, one of these circuits may have tripped. Check both the main electrical panel and any subpanels that supply power to the pump.
  3. Reset the breaker that has tripped if needed, by switching it on to the 'Off' position and then to back on the 'On' position
  4. Remove any debris, leaves or dirt around that unit that may clog its system with a rake or broom.
  5. To clean inside the pump, open the blower access door located on the outside of the unit. Slide the filter from the unit and vacuum inside the compartment with a hand-vacuum hose attachment.
  6. Discard of the older filter and replace it with a new one. Slide it back inside its harness until it stops at the end of the compartment. Change the filter on a monthly basis.
  7. Remove any obstruction like debris from the vents. Shut the access door panel firmly.
  8. Restart the heat pump from a low temperature by turning the system selector knob to emergency heat located in the outside, small box compartment. Wait six hours before returning the unit to its factory setting or normal heat setting.

 

Would you attempt to fix this?

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We've often heard the term "pilot light" when speaking of furnaces and hot water heaters, but what is it?  In reality, it is a small light that serves as the ignition source for the gas burner in either of these places.  As an HVAC specialist, you will probably end up lighting pilot lights.  Here is a quick how-to to make sure you can do it safely and correctly.

 

Step 1: Find pilot light assembly. It typically has a gas valve with on, off, and pilot settings.


Step 2: Turn valve to off and wait three minutes.


Step 3: Switch valve to pilot setting. Hold lighted match to pilot opening while you push reset button on pilot control panel. Keep this button depressed until pilot flame burns brightly, then set valve to on position.


Step 4: If pilot flame won't stay lit, opening may be clogged. Turn gas valve off, and clean opening with piece of fine wire. If it won't stay lit after several attempts, you may have faulty thermocouple. If pilot flame still won't stay lit, call professional service person.

 

Have you lit a pilot light before?

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When the seasons change, the weather can leave some people sneezing, coughing, and rubbing their eyes.  Allergy triggers can get in your home through vents, windows, and doors and offer no relief once the sufferer is inside the home.  Perhaps the trigger is inside the home already like a cat or a carpet cleaner.  Whatever the case, sometimes people need an air purifier.  But what are air purifiers and how do they work?

 

Air purifiers clean out the air in three ways.  Filters have small holes that allow air to pass through, but block some particles that are in the air like  foam, fiberglass, cotton and synthetic fibers.  Ionizing purifiers give every particle that passes through it a positive or negative charge and then holds on to them like a giant magnet.  Finally ozone generators turn oxygen particles found in the air into ozone.

 

Now you know the three kinds, how do you pick which one is right for you.  Consider these questions before you ask an HVAC specialist.

  1. Performance. Look for a unit that removes a high amount of particles from the air, including smaller-sized pieces.
  2. Air volume capacity. Choose a unit that is recommend for your size room. This is usually expressed as square feet.
  3. Particular health concerns. Consider what substances you want to be removed from the air: smoke, germs, bacteria, etc.
  4. Manufacturer. Choose a purifier that has a reputable manufacturer. The Association of Home Appliance Manufacturers is a great source.
  5. Indoor factors. If there is a particular pollutant affecting your health, look for a unit that works best at eliminating it.
  6. Cost of operating. Replacement filters do cost so make sure to look at the replacement interval and the cost of filters.
  7. Quality of construction. Make sure the warranty covers the internal parts of the unit.
  8. Ease of use. Make sure the unit is easy to operate, clean and change the filter
  9. Noise while operating. Is the unit considered ‘whisper quiet’? You can request its operating noise values before you make a purchase. Quieter units are around 35 decibels.
  10. Warranty. Look for a long-term and comprehensive warranty

Do you own an air purifier?  Would you buy one?

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When it comes to heating your home, there are many different ways to warm it up.  Some people prefer furnaces where others would rather have a centrail heating boiler.  If you decide to go with the heating boiler, there are things you want to consider when you go to make a purchase.  eHow shows you some easy ways to make sure you make the right choice for your home.

 

  1. Decide which type of fuel you want to operate your boiler. Gas or oil are most common, and many prefer the convenience of gas since you can connect your unit up to a main gas supply and avoid having to replenish when empty. Wood burning boilers are more labor intensive, since the ashes must be regularly cleaned out. Also consider that the type of fuel can greatly determine the cost of the service and maintenance your system will require. It is more expensive to service an oil-burning boiler system, for instance, than a gas or wood-burning unit.
  2. Calculate the size or capacity of the central heating boiler your space requires. Ultimately, the size of your building, the number of bathrooms and the number of people who occupy the house will determine the capacity you need. Below is a method to get a rough estimate of your needed capacity:
    • Add together the manufacturer's recommended heat output for every radiator in your home
    • Add 3kW to account for a hot water cylinder if your unit will also be used to heat water
    • Add 10 percent to this figure to take into account very cold winter weather
  3. Consider which type of central boiler heater best suits your needs--a combination, conventional or a system boiler. Conventional units are the most common--and can heat a home as well as its water throughout the house. The conventional boiler requires a holding tank and consumes the most energy of all boiler types. A combination unit supplies hot water on demand and does not require a holding tank or extra pipe work. Combination boilers usually cost less than conventional counterparts, but can take a while for water to heat up and are limited to only heating one tap at a time. System boilers give more consistent temperatures and flow rates as a result of the heating element being located within the storage tank. System boilers are by far the most expensive to install.
  4. Compare energy efficiency ratings. Similar to furnaces, boiler energy efficiency is measured by assigning each unit an AFUE (annual fuel utilization efficiency) rating. Cut your home heating costs by at least 30 percent by installing a boiler with an AFUE rating of 90 or higher.
  5. Choose which position is better suited to your home--wall hung or floor standing. Wall-hung boilers take up less space and are designed for installation in commonly used places in your house, such as a kitchen. Floor-standing boilers tend to be larger and noisier, have a higher output, and are installed in less frequented areas, like cellars or garages. The heat exchanger in floor-standing models can last longer than that of wall-hung models.

 

Do you have any other heating tips?

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As it gets farther and farther into autumn, we continue to discuss making that transition between relying on your air conditioner, to warming up your heating.  Every part of your hvac system needs to be altered to coincide with the changing of the seasons.  This includes your heating ducts. How do you change them from cooling to warming?  eHow shows us some simple steps.

 

  1. Open room low -duct air returns to collect cold air at the floor.
  2. Adjust the air supply for winter. The best way to do this is to adjust the small dampers in the heating duct in the basement. Look for these dampers where the round supply duct connects to the main rectangular ducts. Look for a small, threaded rod and a wing nut. You can adjust the damper by turning the screwdriver slot on the small rod. When the slot is parallel to the duct, the damper is open. Do not adjust the wing nut as it merely locks the damper into position.
  3. Heating ducts vary. Some have levers indicating the direction of the damper. Some rectangular ducts have dampers and levers. Note that closing the duct 50 percent or to 45 degrees will only partially slow the heated air flow. Often even if you close the damper 100 percent you will still have air flow because they fit very loosely in the ducts. Try several settings over a few days and check the response on each floor.
  4. Close first floor dampers to direct heated air to the second floor. Once you achieve a comfortable balance, mark the position of dampers and baffles with a marker.
  5. For systems with central air conditioning, reverse the above steps for summer cooling. Mark the damper with the correct position for each season.

 

What else needs to be done to warm up your house?

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