IERNA's Heating & Cooling Blog : Posts Tagged ‘Valrico’

Air Conditioning Guide: What to Do About Cool Spots

Monday, July 30th, 2012

Sitting on your couch watching TV should be an enjoyable experience, especially after a long day at the office. But, if your Brandon air conditioner deposits an abnormally high volume of cold air directly onto your couch, making you shiver despite the 90 degree heat outside, you may have a cool spot.

Cool spots are an unfortunate side effect of modern air conditioning technology. They occur when HVAC systems are improperly sized or ductwork is improperly installed. Other factors like insulation, vent configuration or window placement can also contribute to the presence of a cool spot (and possibly some hot spots). So, what can you do about it? There are a few options, starting with a quick inspection of the space.

Checking for Common Problems

Your contractor will check a number of things. Most importantly, they’ll measure the size of your Brandon  HVAC system and compare it to the dimensions and particulars of your house. Usually, in the case of cool spots, the problem is directly related to an oversized system. When it turns on, even for a few minutes, it produces more cold air than is necessary, flooding your home with cooling. The thermostat recognizes this and the system shuts off soon after turning on. As a result, you’ll feel fluctuation between cold and warm as the system fails to properly condition the space.

Modern systems are sized for your house at 100% capacity. So, when the system turns on, it should stay on for a substantial period of time, keeping your home cool. Turning off and on frequently is bad for the system and wastes energy (plus it produces those pesky cool spots). Keep in mind that hot spots can also occur if the system isn’t powerful enough.

Your contractor will also look for vent placement and duct configuration. Improper placement of vents can lead to pooling of cool air that creates cool spots. By checking for potential problems in the layout of your HVAC system, a contractor can determine if new vents or ducts are needed to solve the problem.

Fixing the Cool Spots

For now, you may just want to move to another part of the house. Cool spots rarely affect the entire space – they tend to cluster around vents and outlets and can usually be fixed by resizing or adjusting your system. However, only your Brandon air conditioning contractor can tell you for sure what the best solution will be for your air conditioning issues so make sure to schedule an inspection with Ierna’s Heating & Cooling today!

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AC Tip: Saving Energy This Summer

Tuesday, May 29th, 2012

Everyone wants to make their home more energy efficient, it not only saves you money but it also makes your home more environmentally friendly. Upgrading your Tampa Bay HVAC equipment is a great place to start, but it can be hard to decide what to do first.

Before you start making changes, ask yourself the following questions:

How much do you spend on energy?

Paying attention to your energy bill from month to month is very important. A sudden spike could indicate a problem with your HVAC system or other appliances in your home. If you start trying to embrace an energy efficient lifestyle, your energy bill can help you keep track of how well you are doing.

Are there benefits to this upgrade?

In addition to being energy efficient, you should discover if there are any other ways that a change can benefit your home. For instance, a new air conditioner could make your home more comfortable, or zone control could make it easier to keep every room in your home the desired temperature. You’d be surprised how many energy efficient upgrades can really improve your whole home and not just your energy bill.

What is your budget?

Budgeting is never fun, but it’s important step to figuring out what you should change first. While it would be great to replace your air conditioner and furnace for ENERGY STAR rated models, it’s a big investment. You can try the little things first, like improving you insulation, repairing air ducts, and sealing air leaks. After you have saved up and improved other parts of your home you can work on replacing your HVAC equipment.

Improving the energy efficiency of your home will make it more comfortable and lower your utility bills. If you have any questions about energy efficient upgrades you can make to your home, call Ierna’s Heating & Cooling today!

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AC Guide: Components of An Air Conditioning System

Monday, April 30th, 2012

Our Tampa air conditioning system is a modern convenience that we can easily take for granted as long as all the parts are working well.  In every unit, no matter the size, the basic process is one of extracting heat from the conditioned space and moving it to the outside, leaving cool air in its place.

This process easily divides into indoor and outdoor components.

Air Conditioning 101

Based on the principal of thermal energy which states that heat gravitates toward cooler temperatures, compounds known as refrigerants are moved through a closed loop system, repeatedly contracting and expanding between liquid and gas forms, alternately releasing and absorbing heat along the way.  The particular chemicals are selected for their abilities to transform from one state to the other at low temperatures.

While the refrigerant evaporates into a gaseous state within the looped system, it absorbs heat, removing the stale air from the space being conditioned and evacuating it to the outdoors. The warm air is pulled through ducts to meet with the cooling loop.

Ductwork

The cooled air is distributed through ducts or tubing and released into individual spaces.  Additional ductwork is required to remove the stale air and pull it back to be reconditioned as it passes over the loop containing the refrigerant.  The air is moved in both directions by a blower, usually electric and sized to handle the amount of air no matter the building.

Ductwork is also sized to handle appropriate volumes of air. To maintain efficiency, large trunks distribute along central lines to smaller ones reaching farther out. The return air is usually taken from common areas.

The grates are found in the walls, floors and often as part of the dropped ceiling. When combined with a forced air heating system, the total energy use is much more efficient.

Looped Coils

The refrigerant is enclosed in a loop where it can expand and contract to make its transformation from gas to liquid and back again.  To change into a heat-absorbing gas, it travels through the evaporating coils, an intricate series of delicate fins that meets with the ductwork to regenerate the conditioned air.

An exchange valve allows just the right amount of liquid refrigerant into the evaporator coils.  If there is too much, the tube is flooded too tightly to allow expansion of the molecules and room to attract the heat.  If too little, the process is inefficient.

AC Maintenance

When set up and maintained on a regular basis, the system functions with little attention and over sight.  To set up a maintenance appointment for your Tampa air conditioning system, give Ierna’s Heating & Cooling a call!

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