Ventilation Systems for Cooling

Ventilation Systems for Cooling

Ventilation is the least expensive and most energy-efficient way to cool buildings. Ventilation works best when combined with methods to avoid heat buildup in your home. In some cases, natural ventilation will suffice for cooling, although it usually needs to be supplemented with spot ventilation, ceiling fans, and window fans. For large homes, homeowners might want to investigate whole house fans.

Interior ventilation is ineffective in hot, humid climates where temperature swings between day and night are small. In these climates, natural ventilation of your attic (often required by building codes) will help to reduce your use of air conditioning, and attic fans may also prove beneficial. However, an alternate approach is to seal the attic and make it part of the conditioned space in your house, putting the insulation on the inside of the roof rather than on the floor of the attic. Sealed attics are more feasible in new home construction, but can be retrofitted on an existing house.

Principles of Heating and Cooling

Understanding the roles of conduction, convection, radiation, and perspiration.

Avoiding Heat Buildup

Keeping the outside heat outside, avoiding heat-generating activities, and using spot ventilation can help keep your home cool during hot days.

To avoid heat buildup in your home, plan ahead by landscaping your lot to shade your house. If you replace your roof, use a light-colored material to help it reflect heat. Insulate your house to at least the recommended levels to help keep out the heat, and consider using a radiant barrier.

On hot days, whenever outdoor temperatures are higher than the temperature inside your house, close tightly all the windows and exterior doors. Also install window shades or other window treatments and close the shades. Shades will help block out not only direct sunlight, but also radiated heat from the outdoors, and insulated shades will reduce the conduction of heat into your home through your windows.

Cooking can be a major source of heat within a home. On hot days, avoid using the oven; cook on the stove-top, or better yet, use only a microwave oven. For stove-top or oven cooking, use the spot ventilation of your oven hood to help remove the heat from the house (this will suck some hot outside air into your home, so don’t overdo it). Outdoor grilling is a great way to avoid cooking indoors, and of course, going out to eat or ordering take-out work as well.

Bathing, washing laundry, and other activities can also pump heat into your home. When you shower or take a bath, use the spot ventilation of a bathroom fan to remove the heat and humidity from your home. Your laundry room might also benefit from spot ventilation. If you use an electric dryer, be sure it’s vented to the outside.

Finally, avoid any activities that generate a lot of heat, such as running a computer, burning open flames, running a dishwasher, and using hot devices such as curling irons or hair dryers. Even stereos and televisions will add some heat to your home.

Natural Ventilation Systems for Cooling

In some parts of Australia, natural convection and cool breezes are sufficient to keep homes cool.

Ceiling Fans, Window Fans, and Other Circulating Fans

Fans that circulate air within your home can improve your comfort level. Window fans use relatively little electricity and provide sufficient cooling for homes in many parts of the country.

Whole House Fans

For larger homes, a whole house fan provides excellent ventilation to achieve lower indoor temperatures. For homes with ducts, an alternative approach uses those ducts to supply ventilation air throughout the home.

Air Conditioner Maintenance

Air Conditioner Maintenance

An air conditioner’s filters, coils, and fins require regular maintenance for the unit to function effectively and efficiently throughout its years of service. Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases. Air Conditioner Maintenance is a crucial part of keeping the costs of operating your air conditioner down.

Air Conditioner Filters

The most important maintenance task that will ensure the efficiency of your air conditioner is to routinely replace or clean its filters. Clogged, dirty filters block normal airflow and reduce a system’s efficiency significantly. With normal airflow obstructed, air that bypasses the filter may carry dirt directly into the evaporator coil and impair the coil’s heat-absorbing capacity. Replacing a dirty, clogged filter with a clean one can lower your air conditioner’s energy consumption by 5% to 15%.

For central air conditioners, filters are generally located somewhere along the return duct’s length. Common filter locations are in walls, ceilings, furnaces, or in the air conditioner itself. Room air conditioners have a filter mounted in the grill that faces into the room.

Some types of filters are reusable; others must be replaced. They are available in a variety of types and efficiencies. Clean or replace your air conditioning system’s filter or filters every month or two during the cooling season. Filters may need more frequent attention if the air conditioner is in constant use, is subjected to dusty conditions, or you have fur-bearing pets in the house.

Air Conditioner Coils

The air conditioner’s evaporator coil and condenser coil collect dirt over their months and years of service. A clean filter prevents the evaporator coil from soiling quickly. In time, however, the evaporator coil will still collect dirt. This dirt reduces airflow and insulates the coil, reducing its ability to absorb heat. To avoid this problem, check your evaporator coil every year and clean it as necessary.

Outdoor condenser coils can also become very dirty if the outdoor environment is dusty or if there is foliage nearby. You can easily see the condenser coil and notice if dirt is collecting on its fins.

You should minimize dirt and debris near the condenser unit. Your dryer vents, falling leaves, and lawn mower are all potential sources of dirt and debris. Cleaning the area around the coil, removing any debris, and trimming foliage back at least 2 feet (0.6 meters) allow for adequate airflow around the condenser.

Coil Fins

The aluminum fins on evaporator and condenser coils are easily bent and can block airflow through the coil. Air conditioning wholesalers sell a tool called a “fin comb” that will comb these fins back into nearly original condition.

Condensate Drains

Occasionally pass a stiff wire through the unit’s drain channels. Clogged drain channels prevent a unit from reducing humidity, and the resulting excess moisture may discolor walls or carpet.

Window Seals for Room Air Conditioners

At the start of each cooling season, inspect the seal between the air conditioner and the window frame to ensure it makes contact with the unit’s metal case. Moisture can damage this seal, allowing cool air to escape from your house.

Preparing for Winter

In the winter, either cover your room air conditioner or remove and store it. Covering the outdoor unit of a central air conditioner will protect the unit from winter weather and debris.

Hiring a Professional

When your air conditioner needs more than regular maintenance, hire a professional service technician. A well-trained technician will find and fix problems in your air conditioning system.

The technician should:

  • Check for correct amount of refrigerant
  • Test for refrigerant leaks using a leak detector
  • Capture any refrigerant that must be evacuated from the system, instead of illegally releasing it to the atmosphere
  • Check for and seal duct leakage in central systems
  • Measure airflow through the evaporator coil
  • Verify the correct electric control sequence and make sure that the heating system and cooling system cannot operate simultaneously
  • Inspect electric terminals, clean and tighten connections, and apply a non-conductive coating if necessary
  • Oil motors and check belts for tightness and wear
  • Check the accuracy of the thermostat.

Benefits of Installing Air Conditioning

Installing Air Conditioning

Installing Air Conditioning

Alltech Air Conditioning has the expertise and experience to provide all the benefits of installing air conditioning for your home or business. Contact Alltech Air Conditioning Caringbah for a free quote and enjoy the upcoming summer in comfort.

Why Invest In Commercial Heating And Air Conditioning?

Why Invest In Commercial Heating And Air Conditioning?

As a business owner, you want the inside of your store or office to be comfortable no matter what the season. If your building is constantly too hot or too cold, that could mean a loss in revenue. We understand that running the commercial air conditioning or heat costs money, but we want to give you some examples where we think it will help your business.
Why Invest In Commercial Heating And Air Conditioning?

Employee Productivity

We briefly talked about this topic in this blog, but keeping your employees comfortable has a big effect on your business. If your employees are too hot or too cold, they will be more focused on getting comfortable than doing the work that they are paid to do. It will also help keep employee turnover rates lower. If your employees dread coming into work, eventually they will stop showing up. Whether you own an office or a restaurant, you have to have happy employees.

Returning Guests

In businesses where you depend on customers coming into your building, you want to take care of every person that walks in. If the building is uncomfortably hot, your guests will not be able to enjoy their experience. They will leave and never come back. Not only that but they will tell everyone they know not to go. They could even tell people they don’t know on the internet not to go to your business. Same thing goes for your business being too cold. If you are eating in a freezing restaurant, your food will be cold almost immediately and your guests will not be able to eat it.

There are many reasons why you should invest in commercial heating and air conditioning. Look for more reasons in coming blogs. In the meantime, call Alltech Air Conditioning for a free quote.

Interesting Facts About Air Conditioning

Air conditioning has a very long history and has become more and more popular in the last few decades. Since HVAC is what we are experts on here at Alltech Services, we wanted to tell you some fun facts about air conditioning that we have learned. We hope that you find these facts as interesting as we do.

 

  • There is not a precise moment in time that air conditioning was invented.
    • In ancient Egypt, people used to hang reeds in windows where it absorbed trickling water and cooled the air blowing in through the windows. It also made the air more humid in the hot desert.
    • In Ancient Rome, water was circulated through the walls to cool them down.
    • In Medieval Persia, they used cisterns and wind towers to cool their buildings.
  • Modern air conditioning came in the 19th century, invented by American inventor, Willis Carrier.
  • Less that half of Australia’s population has air conditioning, compared to 60% of the  United States population.
  • Air conditioning is partially credited for advances in medical technology, helping humans live longer and decreasing the spread of diseases as well as increasing employee productivity.
  • There is a talking air conditioning unit in the movie “The Brave Little Toaster” who is voiced by the late, great Phil Hartman.
  • People all over the globe still flock to movie theaters to beat the hot, summer heat. This trend started in 1917 because the majority of people did not have air conditioning in their homes.

 

We hope that you enjoyed our interesting air conditioning facts and we hope that it has made you want to install AC in your home. Call Alltech Air Conditioning today and we can make that happen.

Benefits To Having Air Conditioning

Most people think that an air conditioning system is there to serve one purpose and that is to keep us cool on even the hottest of days. But in reality, it can help with more than just cooling the house down. We want to tell you about some of the other benefits to getting your very own air conditioning.

 

Medical Reasons

There are some people in this world whose body is not very good at regulating temperature. With an air conditioning system, you are able to control the temperature and the climate in which you live. New babies, as well as some animals and elderly people are not able to control their body temperature like adults can.. Being able to control the temperature means that they are able to prevent overheating and even heat stroke.

 

Air conditioning is also good for people who have severe allergies and asthma. The cold air that is blown out through the vents is cycled through an air filter which makes the air inside your home cleaner than it is outside. All you would have to do is make sure that you keep up with replacing the filter and cleaning the air ducts.

 

Cuts Down Noise Pollution

Have you ever walked into a residence or commercial building and heard the air conditioning running? If you have, something is wrong with their system. For the most part air conditioning systems are quieter than whispers. If you only have a window unit, you will notice a lot of excess noise making its way into your ears. This is because not only the unit is loud but you have to have an open window which allows road noise, birds, dogs, kids and a whole bunch of other sounds to come through.

 

When you are ready to get an air conditioning system of your own, call the professionals at Alltech Air Conditioning today.

Tips For A Cooler Home

In our last blog, we discussed some tips to save you money on your energy bills. In this blog, we want to go over some tips to keep your home cooler in general. Like everyone that has a cooling unit installed in their home, we want to stay as cool as possible. There aren’t that many people out there that enjoy sweating in the hot sun.

Unit Placement

If you have the opportunity to choose where your AC unit is installed, choose a shady spot near your house. If the unit stays cool, then it doesn’t have to work so hard to cool the inside of your home. If you can’t choose where the unit goes, you can always create shade. Plant a shrub or tree or build something around it that allows the unit to get air and stay out of the sun.

Use Blinds

If your windows have blinds, keep them down and keep the heat from the sun from coming in your house. If you are able to, you can also use external shades to stop the sun from the outside.

Clean Filter

When you regularly clean and replace your air filters, then your unit can work more efficiently and produce cooler air. Cleaning the dust out of your filters can not only help you stay cool but will save you money on your energy bill.

TV Placement

Be careful not to set up your televisions or lamps or anything else that puts off heat, next to your thermostat. The heat can make your thermostat think that it is still hot in your house and will work harder to get your home cooled. This will exhaust the AC unit and cost you more.

If you are in need of air conditioning repair, call the experts at Alltech Air Conditioning today!

Tips For A Cooler Home

Tips To Save You Money This Season

The season is about to change to the warmer side here in Australia and that means that is almost time to turn on the Air Conditioning. Turning on your AC means that you will have to start paying more on your electric bill as the season goes on. Alltech Air Conditioning wants to help you save money this spring and summer with some helpful tips.

Don’t keep air so low

Experts say that if you keep your inside temperature at about 78 degrees, you can save 5% – 15% on your air conditioning bills. This might seem on the warm side but when you are coming in from the hot air outside, it will feel quite nice as you walk into your home.

Use fans

A great way to save money is to use a fan to circulate the air in your home. Putting the fans on the upper level of your home and opening the windows on the lower level can help cool the air. You can also try putting a fan in the window and face it outside so that you can move the hot air out and get cold air in.

Don’t use the oven

When you use the oven or the stove, you are adding hot air into your cooled home. If it is at all possible, use the microwave or make dishes that do not require cooking. If you absolutely need to cook something wait until the evening so that temperatures are cooler.

The best way to save money is to keep your AC unit maintained and replace it when it is needed. That is where Alltech Air Conditioning comes in. We want to help you keep your energy bills low. Call us today to see how we can help.