Posts Tagged ‘The Woodlands’

Houston AC Repair Tip: Icing Problems on Air Conditioner Cooling Coils

Monday, May 14th, 2012

Air conditioning cooling coil icing problems can arise for a couple of reasons: either the air filter has not been properly replaced, or there is a condensing coil leak.  It is best to check and test the easiest problem first and then move on from there.

It is important to replace air conditioning filters as often as is recommended by the manufacturer.  A common result of not replacing filters frequently enough is a buildup of dust and dirt on the filter, which causes reduced air flow throughout the air conditioning unit.  With reduced air flow, the evaporator coil or cooling coil within the air handler can become blocked by ice or frost build-up.  Having cooling coil icing can significantly reduce or completely stop the amount of cool air being produced by an air conditioning unit.

Easy steps to diagnose and resolve your Houston air conditioning cooling coil icing problems:

  • Visually inspect the air conditioning cooling coils to check whether reduced air flow has been caused by cooling coil icing.  If ice or frost is found on the coils, thus blocking air-flow, proceed with the next step.
  • Turn off the air conditioning system completely to allow ice to evaporate, the unit will have to remain off until all ice is completely melted and drained away from the unit
  • Unclog the condensate drain to ensure proper drainage of melting ice
  • Replace all dirty filters on the air conditioning unit
  • Once the a/c unit is de-iced and has fresh filters, it is safe to turn the system back on, to test whether the icy build-up happens again

If after completing these steps, when the air conditioning unit is turned back on cooling coil icing happens again, this could mean one of two things.  Either too little of the refrigerant is being released into the cooling coil due to a clogged capillary tube or a stuck thermostatic expansion valve.  Or the refrigerant charge is too low due to a refrigerant leak.  A refrigerant leak can happen at any point in the refrigerant piping system which would then need to be soldered and resealed, or it can happen in the cooling coil or condensing coil which could mean the entire coil needs to be replaced.  Fixing of refrigerant leaks should be handled by a Houston HVAC professional.  Contact Air National, we can identify the air conditioner cooling coil icing problem and execute the proper solution.

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Tomball Heating Contractor Tip: Why Is My Heat Pump Tripping the Breaker?

Friday, December 9th, 2011

Circuit breakers are safety devices designed to keep an overload of electricity from occurring to a single device. If a circuit breaker trips, it can be due to a number of things, ranging from a small power surge to a serious electrical problem in the device on that breaker. That’s why, if your circuit breakers starts to trip repeatedly when your heat pump is on, you should act immediately because there might be something wrong with the device.

Troubleshooting the Problem

Keep in mind that your circuit breakers are safety devices. They are there to protect the equipment and your home from shorts. If you continuously ignore the problem, it can eventually become much worse and put you and your family in danger. Too many trips and you could be dealing with melted lines and eventual electrical fires. To help in troubleshooting your breaker tripping issues, here are some common problems homeowners run into:

  • Loose Connections – Because you have electrical lines going outside, they can expand and contract over time as the weather changes and eventually come loose. In this case, they just need to be tightened. Don’t check or attempt to repair this problem without turning off the electricity to those wires, however. It is EXTREMELY dangerous.
  • Electrical Short – A short in the wiring or the equipment will also cause the circuit breaker to trip repeatedly. If your breaker trips immediately whenever you turn on the device, this is probably the culprit. Leave the breaker off and call for service right away.
  • Compressor Problems – If your compressor is aged and starting to work harder than it did before, it might be drawing extra electricity when the heat pump is turned on. If this happens, the circuit breaker will trip occasionally. Sometimes a capacitor needs to be replaced or the compressor serviced.

These are just three common reasons your circuit breaker might trip repeatedly when you turn on your heat pump. Other issues include a bad breaker, locked up motor, under sized wiring or breaker and more. If you cannot find and fix the problem safely, you should call an HVAC contractor to take a look and fix it for you. The risk of fire or damage to your heat pump is too great to ignore this kind of problem.

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A Tip from Houston Furnace Contractor: Why You Should Have Annual Heating Maintenance

Thursday, November 17th, 2011

Particularly if you’ve just purchased a new furnace for your Houston home, it’s probably not something you think about all that much. As long as it works when you need it to, that is. Unfortunately you usually find out that something is wrong with your furnace just when you need it most. However, there is a way to avoid that kind of problem, and many others, and that’s to have regular maintenance service performed on your furnace by a Houston heating professional every year.

One of the main reasons to have your furnace serviced is that it allows technicians to catch small problems before they become large ones. During a typical maintenance visit, a technician will examine all parts of your furnace to ensure that they are still in good working order. He’ll also thoroughly clean out the unit to make sure there are no buildups of debris that could cause problems or impede the furnace’s energy efficiency.

And if they do find something wrong like a part that’s beginning to wear out or something that just isn’t working properly, the technician can make the necessary repairs right away. You can get the problem taken care of ahead of time and you won’t have to worry about going without heat during the coldest part of the winter.

That’s not the only reason that annual maintenance is important and beneficial, however. It can also help you save money, both on your monthly energy bills and in the long term. That’s because annual maintenance tune ups keep your furnace functioning at peak efficiency levels longer than they would be able to otherwise.

A typical furnace will lose a small percentage of its energy efficiency every year, and while it won’t seem like a lot at first, that can really add up over the course of a couple of years. With regular maintenance, though, you can often maintain up to 95% of your furnace’s original efficiency for the life of the furnace.

Plus, when the proper maintenance and service is performed on a regular basis, your furnace will simply last longer.

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When to Replace Your Air Conditioning System

Wednesday, June 15th, 2011

One of the last things you probably want to think about is replacing your current air conditioning system. However, the time will come when you can no longer ignore the fact that your air conditioning system is not getting the job done like it used to. And considering your replacement options early can help save you a lot of money and aggravation in the long run.

Before you can start looking at replacement options, though, you need to be aware that the time has come to replace your current model. But how can you tell that your air conditioner is on its way out? Well, there are actually quite a few warning signs that, if you are attuned to them, will help you determine whether or not it is the right time to replace.

First of all, if you have to call for repairs, even minor ones, on a regular basis, chances are that you would be better off replacing rather than continuing to patch up the air conditioning system you already have. This is true for several reasons including the fact that a system that requires repairs so often is probably not going to last you much longer anyway.

By replacing now rather than continuing to pay for repairs, you will save a lot of money in the long run. After all, you are going have to pay for the new system sooner or later, so you might as well skip the shelling out of extra cash to repair a system you are just going to get rid of anyway.

Problems like inadequate or uneven cooling or mismanaged humidity levels in your home are a good sign that something is not working right in your air conditioning system and that it may be time to replace. At the very least, you should call someone out to take a look and let you know what type of repairs you are looking at.

You should also think about replacing an older system even if it is still working fine because the newer systems available are much more energy efficient than even the top of the line models available ten years ago. While you will have to pay the purchase and installation cost up front, you will immediately begin to save substantial amounts on your monthly cooling bills.

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Energy Efficient Home Cooling Tips

Friday, June 10th, 2011

Having an energy efficient air conditioning system in place is a great way to keep cool in the summer for less. But that is far from the only thing you can do to help reduce your energy bills throughout the hottest months of the year. In fact, there are several simple steps you can take to start cutting down on your cooling costs right now and lighten the cooling load that your air conditioning system has to bear.

One of the main things to remember when you are trying to keep your house cool is that every door and window is potentially letting in warmer air from outside and letting the cooler indoor air escape. You can cut down on this considerably if you simply take the time to seal up these access points and any others you are able to find.

Putting up plastic over unused doors and windows and checking all areas of the house for drafts and adequate insulation will dramatically reduce the cost of keeping your house cool in the summer. Also, you can keep the sun from warming up your indoor air by drawing the blinds, particularly on those windows that let in the hot afternoon sun.

Putting up light colored siding and reflective roofing will also do a great deal to keep your overall cooling costs down. That is because these materials are able to direct the heat of the sun away from your house rather than letting it be absorbed so that it can heat up the inside. The vast majority of the heat that your air conditioning system has to remove from your house comes in through your roof and walls, so blocking this access point is extremely helpful in keeping your overall cooling costs down.

All of these are steps you can take to reduce the total cooling load that your air conditioning system has to deal with. But if you want your system to continue to function at peak energy efficiency, you will have to take care of it as well.

This typically means having someone come in once a year to perform a thorough inspection of your air conditioning system and to clean out any debris that may have accumulated over time. Having this done will make it possible for your air conditioner to continue to function at the highest possible levels of energy efficiency for years to come.

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What Types of Air Conditioning Systems Are There?

Friday, May 27th, 2011

Picking out the right air conditioning system for you can actually involve a lot of steps. There are many factors to consider and you will need to understand how each type of air conditioning system functions to know what will be best in your house. Of course, before you can compare them, you need to know what the different types of air conditioning systems actually are.

Packaged air conditioning systems are probably the type that the majority of people are most familiar with. They consist of an outdoor compressor unit that is connected to an indoor air handler or furnace through ductwork within the house. The air is cooled by the compressor and then blown into the house where it is circulated through the ductwork by the air handler.

Packaged air conditioning systems are appropriate for most residential buildings and they come in a variety of sizes so that it is easy to match one to the size and dimensions of your home. However, these types of air conditioning systems do require ductwork, so if you do not already have it installed in your house, putting it in can add considerably to the overall installation costs.

If you do not want to have ducts put in or if you are only trying to cool a small space within your home, you may want to opt for a ductless mini-split system. These types of air conditioning systems are becoming more and more popular because of their excellent energy efficiency and flexibility when it comes to installation options.

Ductless mini-splits also require an outdoor compressor unit, but this is connected to one or more indoor units through refrigerant lines rather than actual air ducts. These refrigerant lines are much easier and less costly to put in place than ducts are, so mini-split systems can be installed for much less than a packaged air conditioning system in a home that does not already have ducts.

These ductless mini-split systems can include only one or many indoor units. Each of these units is controlled independently of the others, making it possible to maintain different temperatures in different parts of your home.

For larger buildings and commercial spaces, central air conditioning systems are generally the preferred option. They are set up essentially the same way as packaged air conditioning systems but on a much larger scale. However, just like packaged air conditioning systems, central air conditioners rely on ducts to get the cooled air to the various areas of the building.

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How Do I Check for a Dirty Evaporator Coil?

Friday, May 13th, 2011

The evaporator coil is an essential piece of your air conditioning system. It absorbs heat from air that passes over it, and that air then travels into your home to cool it. So if your coil is dirty or isn’t functioning properly, the cooling power of your air conditioning system is diminished. Fortunately, this problem is fixed easily by cleaning the evaporator coil. You can do this on your own or have a professional come in to take care of it.

Signs of a Dirty Evaporator Coil

The most obvious sign of a dirty evaporator coil is an overall drop in system pressure. As long as you know what constitutes a normal pressure for your system, you should be able to tell if the current pressure is below that level. If it is, a dirty evaporator coil is probably your culprit. You can also check the static pressure in your system to see if that is low, but this requires specialized equipment.

Even if you don’t notice any particular signs that your air conditioning system isn’t working properly, it’s a good idea to clean your evaporator coils once a year or so. This can help prevent any larger problems from developing in the future.

Finding Your Coil

Probably the hardest part of cleaning an evaporator coil is reaching it. Unlike your condenser coil, which is located in your outdoor condenser unit, the evaporator coil is found inside near the air handler or furnace. If you have the owner’s manual, there should be detailed instructions telling you where the coil is and how to safely access it.

Alternately, you can have an HVAC technician show you what to do the next time they come out to work on your system. Whatever you do, though, make sure that power to your AC unit is completely shut off before you start working on it. Once you’ve gained access to the coil, use a brush or vacuum attachment to remove any debris or sediment you find there.

The Importance of Maintenance

Cleaning your evaporator coil is only one part of the regular maintenance required to keep your air conditioning system in good working order for the foreseeable future. There are plenty of things you can do on your own, but it pays to have a professional come out once a year or so to check out the entire system and make any necessary repairs.

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What Is Mini Split Air Conditioning?

Monday, April 25th, 2011

If you are in the market for a new air conditioning system, you have probably heard about the mini split systems that are becoming more and more popular these days. However, without more information, it can be difficult to determine whether or not this type of air conditioner is what you really need to keep your home comfortable all summer.

Mini split air conditioners, like most other conventional home air conditioning systems, are made up of two components. They have an outdoor condenser and an indoor unit that manages the airflow throughout your home. But the main thing that sets mini split systems apart from other types of home air conditioning systems is that these two component parts are connected by refrigerant lines rather than air ducts.

In a conventional air conditioning system, the outdoor condenser cools the air and then transfers it through air ducts to an indoor air handler. That air handler then takes care of distributing the air throughout your house via a larger series of air ducts.

Mini split systems, on the other hand, do not require air ducts to get the job done. Instead, these types of air conditioners make use of a wall mounted unit indoors to both cool and circulate the air after receiving coolant from the compressor outside. These wall mounted systems can typically handle the cooling load for one or two rooms and there can be more than one indoor unit hooked up to the same outdoor compressor, allowing you to cool your entire house in this way.

What makes mini splits attractive to many people is the fact that they do not require the installation of complicated ductwork to function. If your home does not already have ducts in place, adding them can dramatically increase the cost of putting in a central air conditioning system. Plus the work will take longer and is likely to be a larger disruption in your life.

Putting in the refrigerant lines for a mini split system, on the other hand, is much easier and cheaper. Plus, refrigerant lines can often reach into places that larger ductwork cannot. This allows you to provide air conditioning to parts of your house that previously did not have access to it. Also, mini split systems allow you to control the temperature in the various areas of your house independently of one another, making it possible to save quite a bit on your cooling bills every month.

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How to Improve Your Indoor Air Quality

Monday, April 18th, 2011

When we think of air pollution we often think of outdoor “smog”, but the air in your home or office may also be polluted, even if it looks clean. Sources of indoor pollution include

  • Mold
  • Pollen
  • Cigarette smoke
  • Household cleaners
  • Household décor and furnishings (like rugs and paint)
  • Household pesticides (like rodent or ant-killers, or plant sprays)
  • Radon
  • Carbon monoxide
  • Building materials (like asbestos and lead)

Indoor air quality is of particular concern in newer, better-insulated homes, or in older homes that have been recently weatherized. The “tightness” of modern houses means that any pollutants that get into the home stay there – and perhaps even increase in concentration over time if the source of the pollution is inside the house.

Indoor air quality problems can cause discomfort and even serious disease, especially in children. The good news, though, is that there are many effective ways to improve indoor air quality.

There are three basic strategies for improving indoor air quality:

  • Air purification. Air cleaners range from small tabletop models to full-house models that are part of the central heating and cooling system. Small air purifiers are typically not very useful, but central air filters can be very effective at removing airborne contaminants. If your heating and cooling system does not include central air filtration, you should consider an upgrade to a new system.It is important to note that air purification will not remove gases like carbon monoxide or radon from your home. Gas pollution must be remedied by professionals.
  • Ventilation. Many forced-air heating and cooling systems do not bring outdoor air into the home. Kitchen and bathroom exhaust fans and attic ventilation fans (when weather permits) can be very important in promoting the circulation of air. Also, opening windows is very important, especially when doing short-term activities such as painting that increase the number of pollutants in the air.You should also consider upgrading to one of the newer central heating and cooling systems that bring outdoor air into the home.
  • Source control. This is the most important indoor air quality strategy, and in many cases, the simplest one. Source control is definitely the most cost-effective strategy for improving indoor air quality, because purification and ventilation both require a constant use of energy.Switch to all-natural household cleaners, buy household furnishings made of natural fibers (instead of synthetic fibers that can “off-gas” volatile organic compounds). When painting, use VOC-free paint. Quit smoking, if you haven’t already.In some cases, source control must be done by a certified contractor. Asbestos should be sealed or enclosed (asbestos is not a hazard unless it is disturbed, at which point it can release a dangerous dust). Radon gas should be mitigated whenever possible by sealing cracks in the foundation where the gas enters, or by filtering the water supply if water is the source. Gas stoves can be adjusted to decrease the amount of emissions. Lead paint can be scraped off or covered with modern, lead-free paint (this is not a DIY job and requires EPA training).

    And, don’t forget to install a carbon monoxide detector in your home, ideally next to the sleeping areas.

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Net-Zero Homes: An Exciting New Green Trend

Wednesday, April 13th, 2011

A net-zero home produces renewable energy equal to or greater than the energy the home consumes from public utilities.

Net-zero homes are part of the broader category of “green homes”(though non net-zero homes may still be considered “green” if they incorporate recycled building materials or other green technologies).

Net-zero homes are not the same as “carbon neutral” homes. Carbon neutrality can be attained for any home by purchasing carbon credits (often from geographically distant renewable energy sources) to offset the carbon emissions the home produces. Net-zero homes actually generate renewable energy on-site.

In regions of the world where homes must be heated or cooled for parts of the year, the design of a net-zero home is crucial. Net-zero homes minimize energy consumption by:

  • · Taking advantage of natural elements such as sunlight, prevailing breezes, topography (for earth-sheltered building and geothermal systems), and vegetation.
  • · Incorporating appropriate weatherization, insulation, and ventilation
  • · Using “daylighting” such as skylights and solar tubes, high-efficiency light fixtures and bulbs, high-efficiency appliances
  • · Reducing “phantom loads” of electrical power caused by electrical equipment on standby
  • · Reclaiming and reusing energy whenever possible instead of venting it outside as in conventional homes; for example, in some net-zero homes refrigerator exhaust is used to heat water.

Net-zero homes also produce their own renewable power using solar, wind, hydro, and/or geothermal “microgeneration” systems. The type of power generated will depend on climate and topography. Some net-zero homes are autonomous or “energy-autarkic” (i.e. “off-the-grid”) while others are connected to the grid and feed power back to the grid when it is not being used in the home.

While true net-zero homes generally must be specifically designed as such, it is possible to move toward net-zero energy usage for a conventional or existing home.

  • · Make the “envelope” of your home as efficient as possible with appropriate insulation, weatherization, energy-efficient windows, passive solar, and ventilation.
  • · Reduce energy demand by upgrading to high-efficiency furnaces (or heat pumps), air conditioning, lighting, and plumbing. Also, reduce “ghost load” from appliances on standby.
  • · Add micro-generation capacity. For most North American homes, solar is the most appropriate choice, though residential wind turbines are also gaining in popularity. Some local utilities even offer assistance and rebates for installing solar.
  • · If you are building a home, keep it as small as you can while still meeting your space needs.

And, the most important part of making your home as close to net-zero as possible: be disciplined about your daily energy use habits!

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