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HVAC Blog | National Air Warehouse

  • What are the Different HVAC Systems to Consider?

    HVAC Systems HVAC Systems

    There are different HVAC systems that homeowners and business owners need to consider when choosing the system that is appropriate for their particular needs. Two such systems are the cooling only split system, cooling only packing system, heat pump, chilled water system, window air conditioners and packaged terminal heat pump.

    Split System

    What is the cooling only split system? It is a blend of outdoor condensation and indoor air handling. The unit for handling indoor air consists of a cooling coil and air supply fan as well as the expansion apparatus. The unit for condensation contains a condenser coil and compressor. These make up the split system, usually found in small commercial offices and residential homes. If you are looking for a high energy efficiency rating for your air conditioning systems, then this split system is recommended. System manufacturers have been required to increase the EER rating to offer varying degrees to accommodate various seasons. If the building requires heating, then a different method is used, but it is generally in the form of gas or electric.

    Packaged System

    The cooling only packaged system is a sole unit with a combination of the same elements in the split system. The unit has to be installed on the exterior of the building since it is packaged. The indoor air has to be ducted away from the building and enter through the utilized air distribution system. The SEER rating for the packaged system starts from 10 and goes up to 18. In a situation where heating is necessary, a different method is used, which is generally gas or electric.

    Heat Pump

    HVAC systems that offer only cooling are similar to the heat pump, but with a single exception. Heat pumps have a unique valve found in the refrigeration piping, which allows the cycle to run in the reverse. The cooling only system works by cooling the air indoors and rejecting the outdoor heat. The heat pump works by cooling the air indoors and upon reversing the valve, it can heat the air indoors.

    Window Air Conditioners

    An air conditioner unit installed in a window or customarily in the opening of a wall is usually accommodated by some homeowners and business owners. This option should be the last resort since a window unit only cools a small and confined space.

    Packaged Terminal Heat Pump

    The window air conditioner unit and the packaged terminal heat pump are quite similar in features. They are installed through a wall opening and are self-contained, requiring electrical connection. The downside is the noise that is emitted and the high operating cost.

    Conclusion

    Choose from the list of HVAC systems wisely. You can receive recommendations from an experienced HVAC contractor before you go ahead and purchase one. You will also need help from an HVAC contractor to install your system.

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  • Why is it so Important to have the Right Size Air Conditioner Unit?

    Central Air Conditioner Central Air Conditioner

    There are several facets of a central air conditioner when it comes to its impact on efficiency and more importantly, the size of the unit. The type of insulation you have in place and the height of the ceiling can also plays an integral part to the extent of how your home is cooled.

    Technical Ranting

    Many HVAC technicians often tend to go off on technical ranting if you were to ask the question: “Why is it so important to have the right size air conditioner unit?” They may want to explain R values and load calculations, which you can understand is the precise details that they received in training. However, most homeowners and business owner will want to hear the explanation in layman terms instead of the technicalities.

    Size Matters

    It is safe to say that the size of your air conditioner does matter. Bigger does not mean that it will be better. This has always been the common misconception by many outside of the HVAC field. It is not conventional wisdom either to think that if a 3 ton A/C unit works well, the 4 ton A/C unit could do the same. Of course, this concept was on the basis of the older central A/C units that were used in the 1980s. These air conditioners used up a lot of energy, even though, they had the capacity to cool a large arena in fifteen minutes. One thing to remember is that during those years, electricity was cheaper than it is today. In addition, there was minimal insulation at the time too.

    Energy Efficiency

    Today, there is a heavy reliance on energy efficiency in the modern central AC units, which operate in cycles as it slowly and steadily lowers the temperature in the home. It is no longer necessary to rapidly run your air conditioner in cycles. If you purchase an air conditioning system that is overly big for the house, then it is going to operate in the same efficiency as did older systems in the 1980s. It will quickly turn on and cool the house at the same space and then it will shut off. Yes, the house will still be cool, but soon after, heat will infiltrate the house because the air conditioner was not able to finish the full cycle that it was specifically designed for. For that reason, you would have to turn it on again, which is what will increase your electric bill.

    Smaller A/C

    If the AC unit is too small, then it will constantly run as it tries to get caught up with where it should actually be. Again, you will have a cool house, but not to the capacity that your AC unit was meant to cool the entire home.  More importantly, it will be more difficult to cool the whole house and your energy efficiency will be reduced.

    Conclusion

    With the appropriate sized air conditioner, you can guarantee that the entire cycle will run, ultimately cooling your house and improving efficiency. In the summer months, the right central air conditioner unit size is extra important. Speak to your local HVAC contractor to find out which size would best suit your home or business.

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  • Is a HVAC Zoning System Right for your Home?

    HVAC Zoning HVAC Zoning

    Is your existing HVAC zoning system appropriate for your home? It is important to note that you would probably benefit from having a zoning system for your home’s heating and cooling needs. When you have such a zoning system, it allows your A/C and heating systems to activate on the basis of the areas where they are being used. Those areas have to show heating and cooling efficiency more than the rest of the home that is being heated and cooled with a central air conditioning system. With the HVAC zoning system, you will end up saving more money and increasing your home’s energy efficiency.

    HVAC Zoning Systems and How They Work?

    If the lights were located on a single switch in your home, what would happen? When you go to sleep at nights or you are away from home, it is obvious that you would probably switch off all lights. However, what happens when you are actually home? If you were to turn on the lights with that one switch, then all lights would be on at the same time. That is a waste of energy and more importantly, you would have to constantly replace light bulbs. Many homes are cooled and heated with that same concept. Each room, whether someone is in it or not, tends to be equally cooled or heating with a central air conditioning system. If you were to create specific zones, then this would change the dynamics.

    Different Thermostats

    HVAC zoning systems incorporate different thermostats in each zone. For that reason, you are able to control temperature in each room, dictating how much energy is used to heat or cool a specific room. In the end, you will save on utility and you will improve the comfort that your air conditioning unit or heating unit provides.

    Zoned Temperature

    When the temperature is zoned, then each zone in the home has an exclusive thermostat to turn the temperature to various comfort levels. All of these thermostats then have one control panel. With this control, the environment in the home is dictated by the homeowner. If you wanted to keep a specific bedroom cooler than it was without having this affect other areas of the home, zoning would work for you. The zoning system depends on a sequence of automatic dampers located in the air ducts. These shift the heating or air conditioning systems according to your needs.

    HVAC Zoning System Installation

    For homes that would receive the largest energy savings with an HVAC zoning system installation, there would have to be specific architectural features. Here are some of the features of the home to bear in mind:

    • Many large windows
    • Higher ceilings
    • Above garage apartment or room
    • Attic living space
    • Basement living space
    • Sunroom
    • Loft
    • Two or more story homes

     

    Conclusion

    With a zoning system, you will end up paying a lower monthly utility bill. The environment in your home would be more comfortable and the wear and tear on your HVAC system would be reduced. If you want to discuss your zoning system options, it is best to speak to an HVAC contractor.

     

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  • What To Know About the Benefits of a Smart Thermostat Installation?

    Smart Thermostat Smart Thermostat

    In the past, thermostats were simpler than they are today. These thermostats came with a dial that you would manually turn on when you wanted to get the house cooler or hotter. Soon, thermostat were digital so they could be programmed with various options available for presetting to different temperature gauges at different times during the day.

    Innovative Gadget

    So, what is the next innovative gadget when it comes to the thermostat? The smart thermostat has taken over from the manual and digital options. Yes, you still can purchase the digital and manual thermostat, but why not get with technology for a change?

    The Smart Way

    Some of these smart thermostat models work in such a way as to look at your patterns and behavior, using the information to program the thermostat accordingly. Many of these HVAC thermostats can be programmed remotely from the Internet, allowing the homeowner to make adjustments while not at home.

    Making the Decision

    The question now is whether you should purchase a smart technologically inclined thermostat for $250 or $350. For help in deciding if you should or not, think about the scenarios below.

    • Do I have technological skills to throw out the programmable or manual thermostat for a smart thermostat? Let’s say you are at Starbucks and able to check your phone to see if the home furnace was turned off or not. Does this seem surreal or just too much and you prefer to stare at that pastry case instead? Or what if the smart nest thermostat sends you an email report about how much energy you are actually using and recommends improvements. Would you be interested in receiving such details or are you the kind of person who would just press the delete button? Some homeowners love apps and gadgets as well as the concept of tweaking their energy system for the maximum savings, but there are some who don’t really care.
    • Smart thermostats are more than just energy efficient. They are amazingly convenient. If you are the kind of person who is always forgetting to adjust your thermostat upon leaving your house, before going on vacation or when going to bed at night, a smart thermostat would be more helpful. You would end up saving more money and when you are at home, this high technology gadget will allow you to feel comfortable in the temperature that it decides on.

    The cost of the smart thermostat will pay for itself in the long run. It will check your energy usage and estimate your savings, after which you can calculate the length of time that this will pay for the smart thermostat.

    Conclusion

    There are various brands of smart thermostat to choose from. Some come with added features such as voice control and others only have Internet capabilities. An HVAC contractor can help you to make the choice that is right for you and also help with the installation process as well as teach you how to use it. So, call a HVAC technician or contractor to discuss your home temperature needs.

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  • HVAC Tips to Keep a Two Story Home Warm

    HVAC Tips HVAC Tips

    What is the major challenge that homeowners face during the cold winter months? It is staying as warm as possible, right? Every person handles the coldness of the winter weather in a different way. The main objective, though, is to remain warm. When you go outdoors, you likely will have to wear the right clothing and shoes for the cold weather to protect yourself from ice, snow, wind, rain and the freezing temperatures.

    The Indoors

    With that being said, what do you do for the indoors when it is cold? Many homeowners don’t make the necessary preparation for the wintry weather. Yes, we are now going through the summer months, but that does not mean you shouldn’t prepare for the fall and the winter. In fact, there are many homeowners that are in the summer time frame and winter is the last thing on their minds as it relates to preparation. What if you live in a two story home? How do you prepare the upstairs area for the winter or even the summer?

    The Suggestions

    There are several reasons why you should maintain warmth in the upstairs area in a home with two stories. It can be quite a challenge, but here are a few proven suggestions below that you can consider.

    • Seal the home air tight
    • Make sure there is the right amount of insulation in the home
    • Adjust your thermostat
    • On the warmer side of the house, open up the blinds
    • Open up the vents and make sure there is no blockage

    The Right Insulation

    When it comes to insulation, you should be aware how important it is in keeping your house warm. It is even more important for two story homes. While downstairs may be warm, you still want to make sure that the upstairs is as well. The level and the kind of insulation you use must be enough for the area where you live. For example, if you live in a warm climate such as Florida, you may want to have an HVAC technician check to see what kind of insulation you need.

    Air Tight Seal

    When winter arrives, there are many homes that have cold air escaping in different areas of the home. This cold air will typically come in through doors and windows that are not properly sealed. You will find out sooner enough how detrimental this is to your energy saving efforts.

    Thermostat Adjustment

    One of the main reasons that the upstairs of a two story home is so difficult to maintain its warmth is failure of homeowners to adjust the thermostat. However, make sure that the thermostat is adjusted once individuals go upstairs and not before. Lower the temperature when no one is upstairs.

    Conclusion

    If you need heating assistance before the winter months come around, solicit help from a HVAC contractor that specializes in heating and air conditioning, but also expertise in two story homes. If you want to be comfortable during the next winter months, make sure you get this done right now, regardless if it is summer or even fall.

    Image credit: https://www.flickr.com/photos/rschnaible/13891110910/

  • The Main Reason for Condensation in an Air Conditioner Unit

    Air Conditioner Air Conditioner

    Air conditioner units are considered closed cycle system because of the condensation of coolant that transforms to liquid, forcing coolant to expand and then vaporize, after which it uses heat from its transfer coils to pump into the cooling tower. Subsequently, it re-condenses and passes through the same closed cycle system again.

    The Vaporization

    When vaporization of the coolant takes place, it does one of two things:

    1. Absorbs the necessary heat for vaporization
    2. Changes its pressure to the energy that is needed

    As the air begins to cool, humidity lessens, but whatever humidity comes from the air will condense on the coils, considerably cooling the air in multiple ways:

    • The coils get cold and so the air becomes cool
    • The condensed water and the air combine to provide generated heat, which condenses the water

    For that reason, the water gains additional thermal mass more than the air that remains. The additional thermal mass energy is eliminated from the coils in the water.

    Leaking AC

    Whenever you notice water leaking from your AC unit, you shouldn’t assume that the unit is operating at its full capacity. There is several times that water leaking from the HVAC system will reveal that some of the elements in the air conditioner unit may be broken or has a malfunction. To avoid a high air conditioning repair bill, you must either have an AC maintenance service in place or watch to see when problems arise, which is never easy.

    Leaking Condensation

    It is possible that on a very hot day, the air conditioning unit in your home will continue to run throughout the day to keep the home and its occupants comfortable. If you see water leaking out of the AC unit after running your AC for long periods of time, the leakage is normal. It means that the air conditioner unit is experiencing condensation as a result of the evaporator coils being excessively used, dehumidifying the air inside the home as it is supposed to do. As the humidity is reduced, dryer and cooler temperature is pumped out, circulating the interior of the home. On days where the temperature is really high, it will also increase condensation, resulting in an overflow inside the drain pan. When this happens too often, you may want to call a HVAC contractor for help.

    Conclusion

    If your AC filter is clogged with dust, small particles or debris, it may also restrict the air flow inside the home. Overtime, this can build up and make it even worse. Filters have to be changed on a regular basis. It may be best to have air conditioning maintenance service prior to the summer months so that your AC unit will be working efficiently. Whatever is resulting in leakage from your AC unit, a skilled HVAC technician can assist you.

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  • HVAC System Design for Commercial Installation

    HVAC Systems HVAC Systems

    Did you know that your heating and ventilation and air conditioning system provides your home with about 30% energy? This is common for small offices and residential homes as well. When you have a well-designed air conditioning system, it does adequately cool a building, but it also reduces the energy consumption. In addition, it also improves the building’s air quality without causing any damages to the environment.

    Industrial and Manufacturing

    In a manufacturing warehouse or industrial building, the HVAC system has various combinations of devices for heating and cooling. Some of these devices include:

    • Electric heat
    • Heat pump
    • Rooftop unit
    • Furnace
    • Chillers
    • Boilers
    • Central AC units

    For the commercial HVAC system installation, there are various system designs to choose from. For this reason, the installation should be done by an HVAC technician with industrial installation experience because some of these designs can be complicated while others are simple.

    Industrial Plant

    In the industrial plant, a basic system would be utilized in a single zone. Modifications are made when necessary to offer coverage to multiple plants or other large areas. For the basic industrial system, the air comes in from the air intake feature, which is usually found on the side or top of the building. Through atmospheric pressure, the forced air goes through a damper. The air is regulated to take in the amount that is required to cool the building. The air that previously went through the HVAC system will subsequently join with the external air.

    The Combination

    This combination is then filtered through the air filter, removing any large particles in it such as bugs, leaves and dust. After this, there is a second filtration process that handles the smaller particles prior to going through the fan. Once the air comes through the fan, it is then cooled or heated by the coils. If there is any condensation, a drain pan does the collection from the coils. The air then goes through the air duct to heat or cool the building, after which it returns through the air registers to be combined with newly created air or it goes out the building.

    Conclusion

    A basic HVAC system offers comfort to a specifically small space while a commercial HVAC system covers a wider space and has elements that consist of:

    • Packaged units
    • Window units
    • Heat pumps

    You will find a commercial system with evaporative coolers, chilled water systems and direct expansion coolers. So, if you own an industrial plant and need to have your HVAC installation done, the complex nature of it will require an experience and specialized HVAC technician. With a bad HVAC installation, you can end up paying higher cost in energy and have terrible air quality.

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  • Key Pre-Summer Maintenance Tips for an Efficient HVAC System

     

    There is no avoiding the hot summer months. It is already upon us and for that reason your air conditioning unit has to be efficiently working to combat the heat. You have to now prepare for the additional use of your AC during this time of the year in order to avoid the inconvenience of AC repair. There are several things you can do in the meantime for proper AC maintenance.

    Test Refrigerant Levels

    One of the primary elements of maintaining your HVAC system is the refrigerant level, which should be tested and checked regularly. If the refrigerant level is low, this could be as a result of some type of leaking. When the refrigerant level is low, it does not cool the house as adequately as would be the case if the refrigerant level was at the appropriate level. In addition, when refrigerant is leaking from your AC unit, it is considered an environmental hazard to the household. If you don’t know how to check the refrigerant level, call in an HVAC contractor for help.

    Air Filter Change

    If your air filter is dirty, it can cause a wide range of AC issues that will need to be repaired. You should ensure that air filters are changed up to four times annually. As it gets hot during the summer months especially, you will use your AC unit more frequently. For that reason, you should clean air filters and change when necessary.

    Digital Thermostat

    Choose a digital thermostat to get the most regulation in temperature. The traditional types of thermostats do not provide accurate temperature reading. This can cause the unit to work much harder. You can also program the digital thermostat to turn up or turn down the temperature at specific intervals, subsequently saving on energy, lessening the stress on your HVAC system and maintaining comfortable temperature inside the house.

    Clean Condenser Unit

    There is a condenser on the outdoors and this should be efficiently maintained as well to prevent AC repair. So, be sure to clean all the bushes and shrubs, if any around the AC unit, preventing these from blocking the AC’s airflow.

    Proper Ventilation

    Your HVAC system has to circulate in the attic too, if you have one. So, prior to the summer months, be sure to check your attic to see if there is anything blocking or preventing air circulation. Get rid of debris or clutter around the air vents or air ducts. This will lessen any additional load on your HVAC system.

    Conclusion

    If you can get some of these things done, your air conditioning system will remain in excellent condition, keeping your house cool during the summer months and beyond. It is time to get your house in order.

    Image credit: https://www.flickr.com/photos/moria/95480015/

  • Factors to Consider in Making an Air Conditioning Brand Selection

    AC Brand AC Brand

    It is quite difficult for someone to feel comfortable during the summer months without having air conditioning in the home. It is also difficult when your air conditioning unit breaks down and you don’t know a good HVAC contractor to call for repair services. It is even more difficult when you have upgrade plans for the home and are getting ready to purchase a central AC unit, not having a clue on which brand to purchase.

    The Pros and Cons

    Each air conditioning brand comes with different pros and cons. Even for a specialist or expert in the industry, it is a tossup at times to suggest the ideal brand for a customer without first inspecting the home and discussing the client’s needs. There are several critical aspects to consider when choosing the right AC brand whether you are upgrading or making your first purchase.

    Longevity

    When you are trying to select the ideal air conditioning brand, lifespan and longevity should be your first concern. You want to buy an AC unit that can stand the test of time and still operate efficiently over a number of years. The earlier AC systems will tend to last longer, usually about twenty years. However, the advancement and development of more sophisticated systems and mass production may not hold true to the same longevity of the past. For example, you may find the thermostat on one AC brand works better than on another. Contact a HVAC contractor with the knowledge and experience to advise you on which of the AC brands will last longer and work more efficiently. It is good to also note that most air conditioners that are the most recent models will come with five year warranty on servicing of parts, labor and compressors.

    Energy Efficiency

    Even if durability is not one of the advantages of newer models of air conditioner units, energy efficiency tends to be an area of strength. This could be due to the interest that consumers now have in energy saving devices. Manufacturers have answered the call in making appliances with the energy star score in mind. Most of the leading AC brands have up to a seven star rating. This significantly reduces the amount of energy air conditioning units required for use. So, when you are looking to choose the best brand, pay attention to the energy star score. This will help you to save on your utility.

    The Features

    Look for the features on the brand that you are interested in. Some of these features will give you a better cooling performance. This could include:

    • Inverter
    • Compressor size
    • Timer control to preset the on and off times
    • Thermostat
    • Zoning – dividing the home into different zones
    • Advanced and sophisticated climate control to regulate the temperature in each room
    • WiFi and remote access to turn on the air conditioner several minutes before getting home

    Conclusion

    When selecting your AC brand, you should also consider the reputation of the company and if there will be any additional support offered after your purchase. Most of the well-known brands are Toshiba, Samsung, Mitsubishi and Carrier. However, consult with your HVAC contractor before you make the purchase.

     

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  • Typical Maintenance Services to Expect from a HVAC Contractor

    HVAC Contractor HVAC Contractor

    The efficiency of your HVAC unit can be increasingly improved if you adapt to the idea of regular maintenance. In addition, in so doing, you will end up saving on energy costs and avoiding costly replacements and repairs. Many homeowners don’t realize the dramatic results that can be gained from regular maintenance.

    General Services

    There are some general services that the HVAC contractor can perform in your home to make sure that your heating, ventilation and air conditioning system remains efficient. For that reason, you will feel warm inside your home when it is cold outside and cool when the weather is warm outside during the hot summer months. If regular maintenance is not performed, then your HVAC system will be overworked and eventually run into instances where repairs and parts replacements are unavoidable.

    Poor Maintenance

    When your HVAC system is poorly maintained or not maintained, it will use more energy to regulate the necessary temperature. If you already have an inefficient AC and heating system, it could be that you have not had them regularly maintained. It is then time to call on a HVAC technician for an inspection and assessment. Let’s take a closer look at the type of general services that you should consider with regular maintenance of your HVAC system.

    The Inspection

    An HVAC contractor will start by giving you a free estimate for an inspection. The technician will evaluate the system and the space where the system provides ventilation. If you have a centralized air conditioning and heating system, the contractor will have to do a more intense inspection, which will take more time. Find out if your HVAC contractor offers free inspection estimates or a special package.

    Repair and Cleaning

    If you have an HVAC system that is fairly new and in good condition, your technician may only need to clean and repair your system. Some HVAC companies will utilize advanced and sophisticated technology with specialized tools. So ask about the pricing first before moving forward.

    Installation and Replacement

    If you have had your HVAC system for a while, you may need a replacement or possible repair. If you have to replace your system, then the HVAC contractor can usually do the installation of any brand. Your contractor may be able to suggest a specific brand selection for more efficiency and energy saving. It is best to have a professional do the installation because of the technicalities involved in the process.

    Continual Support

    After the installation of your HVAC system, you should consider employing the services of the contractor for continued support and maintenance. You will be able to get answers to pertinent questions and have your cleaning and repair done.

    Conclusion

    Be sure to use the services of a reputable HVAC contractor, one with years of experience and the right licensing and insurance. Regular maintenance will ultimately extend the life of your HVAC system.

     

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