As a Bryant dealer, with a wide variety of products to choose from, we can keep your family healthy and feeling comfortable all year long. We carry a complete line of indoor comfort equipment with innovations that raise the standards of comfort and reliability, including air conditioners, heat pumps, gas furnaces, programmable thermostats, humidifiers, ductless split systems, geothermal systems, air cleaners, ultra violet lights and zoning products. Let the experts at Boeschen's Heating & Cooling help you customize a solution that's right for you.

Here’s what you should know about air handlers: if you’re searching for a conventional furnace or air conditioner, you’ll likely never need to know what an air handler is because it’s probable you won’t need one. However, if you’re in the market for an electric heat pump, it’s helpful to know that an air handler will probably be a part of your home’s HVAC system.


The main problem when installing a multi-split system is the laying of long refrigerant lines for connecting the external unit to the internal ones. While installing a separate split system, workers try to locate both units opposite to each other, where the length of the line is minimal. Installing a multi-split system creates more difficulties, since some of indoor units can be located far from the outside. The first models of multi-split systems had one common control system that did not allow you to set the air conditioning individually for each room. However, now the market has a wide selection of multi-split systems, in which the functional characteristics of indoor units operate separately from each other.

Have your contractor do a load calculation based on a recognized method, such as one in Manual J from the ACCA. The contractor’s evaluation should include whether your ducts need to be resized, sealed and insulated, or replaced. Remember that an indoor evaporator coil and outdoor condenser must be a matched set from the same brand, or the performance, efficiency, and capacity might not meet expectations.
The icing problem becomes much more severe with lower outdoor temperatures, so heat pumps are commonly installed in tandem with a more conventional form of heating, such as a natural gas or oil furnace, which is used instead of the heat pump during harsher winter temperatures. In this case, the heat pump is used efficiently during the milder temperatures, and the system is switched to the conventional heat source when the outdoor temperature is lower.
The selection of the working fluids (refrigerants) has a significant impact not only on the performance of the air conditioners but on the environment as well. Most refrigerants used for air conditioning contribute to global warming, and many also deplete the ozone layer.[59] CFCs, HCFCs, and HFCs are potent greenhouse gases when leaked to the atmosphere.
*We work on all brands: Adams, Aire-Flo, Amana, Arcoaire, Armstrong, Beutler, Bryant, Carrier, Centurion, Coleman, Comfortmaker, Cozy, Daikin, Day & Night, Dayton, Ducane, Emerson, Empire, Evcon, Fedders, Friedrich, Frigidaire, Fujitsu, Gaffers & Statler, General Electric, Gibson, Goldstar, Goodman, GMC, Haier, Heil, Honeywell, Intertherm, Janitrol, Kenmore, Lennox, Luxaire, Maytag, Mitsubishi, Payne, Rheem, Ruud, Samsung, Sanyo, Sears, Sharp, Spartan, Tappan, Tempstar, Thermal Solutions, Trane, Utica, Weatherking, Westinghouse, Whirlpool, Williams, York, and Zephyr.
Air changes per hour Bake-out Building envelope Convection Dilution Domestic energy consumption Enthalpy Fluid dynamics Gas compressor Heat pump and refrigeration cycle Heat transfer Humidity Infiltration Latent heat Noise control Outgassing Particulates Psychrometrics Sensible heat Stack effect Thermal comfort Thermal destratification Thermal mass Thermodynamics Vapour pressure of water

Air-source heat pumps are more popular in milder winter climates where the temperature is frequently in the range of 4–13 °C (40–55 °F), because heat pumps become inefficient in more extreme cold. This is because ice forms on the outdoor unit's heat exchanger coil, which blocks air flow over the coil. To compensate for this, the heat pump system must temporarily switch back into the regular air conditioning mode to switch the outdoor evaporator coil back to being the condenser coil, so that it can heat up and defrost. A heat pump system will therefore have a form of electric resistance heating in the indoor air path that is activated only in this mode in order to compensate for the temporary indoor air cooling, which would otherwise be uncomfortable in the winter.
Whether you’re confronted with a minor maintenance issue, safety concern, or system failure, don’t hesitate to call 303-678-5576 for expert assistance. 24/7 Emergency Service allows you to get the help you need, whenever you need it. For all repairs, we prioritize your best interests, providing the information, cost-effective recommendations, and honest answers that add up to greater value for your investment. Our experienced HVAC specialists are familiar with all makes and models, and focus on repairs that enhance the reliability and performance of your equipment. When the job is complete, rest assured there will be no mess, damage, or discarded debris for you to deal with, and your furnace will be ready to meet demand. At Welzig Heating & Air, we build on a reputation for excellence each time we answer a call for repair across Boulder, Longmont, Louisville, Lafayette, CO & more.

About us: Vredevoogd Heating & Cooling has been in business since 1964. As a financially stable company known for its reliable expertise and first-rate customer care, Vredevoogd Heating & Cooling is a company you can trust. Moreover, when you do business with a stable business like Vredevoogd Heating & Cooling, you have the peace of mind of knowing that your warranties are solidly backed by a company that intends to remain in business for another 50+ years and beyond. Don’t trust your essential home systems and investment to any fly-by-night company. Our best practices ensure that we will be here to meet our customer’s HVAC needs for decades to come. Vredevoogd Heating & Cooling founder Dennis Vredevoogd set the high standards by which the company continues to pride itself for. Today, the company continues to be family owned and operated by the founder’s sons, Michael and Thomas, who are committed to maintaining the company’s high standards and complementing them with the innovative technical know-how needed to service today’s advanced HVAC systems.
Air Handling Unit (AHU): a device used to condition and circulate air as part of a heating, ventilating, and air-conditioning (HVAC) system. An air handler is usually a large metal box containing a blower, heating or cooling elements, filter racks or chambers, sound attenuators, and dampers. Air handlers usually connect to a ductwork ventilation system that distributes the conditioned air through the building and returns it to the AHU.

Air conditioning (often referred to as AC, A/C, or air con)[1] is the process of removing heat and moisture from the interior of an occupied space, to improve the comfort of occupants. Air conditioning can be used in both domestic and commercial environments. This process is most commonly used to achieve a more comfortable interior environment, typically for humans and animals; however, air conditioning is also used to cool/dehumidify rooms filled with heat-producing electronic devices, such as computer servers, power amplifiers, and even to display and store some delicate products, such as artwork.
Getting one of the best air conditioner brands is important whether you’re replacing an old HVAC system, or having the first AC unit system put in your brand new home, but it’s not everything. The best Trane, Ruud, or American Standard HVAC system won’t perform any better than a no-name bargain air conditioner system if it’s not installed properly by a quality HVAC contractor. It’s important to find an HVAC installation professional with high ratings and expert knowledge within the field so that your top brand can perform at optimal efficiency.

The selection of indoor units has one restriction: their total power should not exceed the capacity of the outdoor unit. In practice, however, it is very common to see a multi-split system with a total capacity of indoor units greater than the outdoor capacity by at least 20%. However, it is wrong to expect better performance when all indoor units are turned on at the same time, since the total capacity of the whole system is limited by the capacity of the outdoor unit. Simply put, the outdoor unit will distribute all its power to all operating indoor units in such a way that some of the rooms may not have a very comfortable temperature level. However, the calculation of the total power is not simple, since it takes into account not only the nominal power of the units, but also the cooling capacity, heating, dehumidification, humidification, venting, etc.


Tired of dealing with an inoperable furnace? Or, maybe your heating system is only heating half the rooms in your home? Whether you need a new heating system installed or an existing unit repaired, there’s only one name to know—ABC Plumbing, Heating, Cooling & Electric. With more than six decades of experience handling Chicago’s heating problems, our team at ABC has the experience and know-how to get any heating issue diagnosed and resolved quickly and efficiently.
Before selecting the installation location of air conditioner, several main factors need to be considered. First of all, the direction of air flow from the indoor units should not fall on the place of rest or work area. Secondly, there should not be any obstacles on the way of the airflow that might prevent it from covering the space of the premises as much as possible. The outdoor unit must also be located in an open space, otherwise the heat from the house will not be effectively discharged outside and the productivity of the entire system will drop sharply. It is highly advisable to install the air conditioner units in easily accessible places, for further maintenance during operation.
Multiple inventions within this time frame preceded the beginnings of first comfort air conditioning system, which was designed in 1902 by Alfred Wolff (Cooper, 2003) for the New York Stock Exchange, while Willis Carrier equipped the Sacketts-Wilhems Printing Company with the process AC unit the same year. Coyne College was the first school to offer HVAC training in 1899.[12]
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Relative humidity is the ratio of the partial pressure of water vapour in an air-water mixture to the saturated vapour pressure of water at a prescribed temperature. In prevailing Northern European conditions relative humidity and percentage saturation (ration of moisture content) can be considered the same as the divergence is <1%.  In high temperature areas they should be treated differently as the divergence may be as high as 10%.

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Air Blue Heating and Cooling Inc. provides a full range of residential and commercial heating, cooling, and air quality services across Chicagoland and the surrounding suburbs.  With over thirty years of practical experience, we know exactly how to protect your comfort, wallet, and enjoyment of your indoor space.  As a Carrier Factory Authorized Dealer, we ensure top quality products and maximize performance through skilled services.  Our team is fully licensed, bonded, insured, and factory trained.  Every call is answered by a NATE-certified professional, who has verified technical excellence through strenuous, industry-recognized exams.
Our team is NATE-certified.  North American Technician Excellence represents the entire HVAC industry and is an independent, third-party, non-profit organization.  NATE-certified technicians are skilled professionals who have verified real working knowledge of HVAC systems through specialized exams.  Whether your heating or cooling system requires routine maintenance or complex repair, the NATE-certified team from Nerthling's Heating and Air Conditioning shows up on time, prepared to complete the job quickly and accurately, without unnecessary multiple house calls.  We work on all makes and models and offer affordable and convenient service plans to protect your equipment from wear and tear, and ensure like-new performance.
There are multiple reasons to replace your HVAC system. If you have built additions onto your house, you may find your old system no longer meets the requirements for the new dimensions. Perhaps a new technological breakthrough has provided features that will improve your comfort and air quality. Most often, however, you need to replace your system because it no longer works properly.
Electronically Commutated (EC) fans use brushless DC motors which include in-built electronics to convert the AC supply to DC without the need for a separate DC supply. EC fans provide a more efficient (up to 30%) means of airflow through Precision Air Conditioning (PAC) units with the additional benefit of variable speed control via an output signal from the unit controller. Also see EC Fan upgrades.
Since the 1980s, manufacturers of HVAC equipment have been making an effort to make the systems they manufacture more efficient. This was originally driven by rising energy costs, and has more recently been driven by increased awareness of environmental issues. Additionally, improvements to the HVAC system efficiency can also help increase occupant health and productivity.[21] In the US, the EPA has imposed tighter restrictions over the years. There are several methods for making HVAC systems more efficient.
American design standards are legislated in the Uniform Mechanical Code or International Mechanical Code. In certain states, counties, or cities, either of these codes may be adopted and amended via various legislative processes. These codes are updated and published by the International Association of Plumbing and Mechanical Officials (IAPMO) or the International Code Council (ICC) respectively, on a 3-year code development cycle. Typically, local building permit departments are charged with enforcement of these standards on private and certain public properties.
As a family owned and operated full-service HVAC provider in Erie, we recognize the concerns and challenges of keeping your home and family perfectly comfortable without breaking your budget.  At Nerthling's Heating and Air Conditioning, we go above and beyond to eliminate inconvenience, protect your investment, and find solutions you can easily afford.  To better serve your needs, we offer extended regular service hours from 8 to 6 PM Monday through Saturday, available throughout Erie County, including Millcreek, PA, Erie, PA & Fairview, PA.  In emergency situations, we are always available, twenty-four hours a day, seven days a week.  Know that when you call Nerthling's Heating and Air Conditioning, we are 100% committed to your satisfaction.  We treat your home like it’s our own.

Whether you’re confronted with a minor maintenance issue, safety concern, or system failure, don’t hesitate to call 303-678-5576 for expert assistance. 24/7 Emergency Service allows you to get the help you need, whenever you need it. For all repairs, we prioritize your best interests, providing the information, cost-effective recommendations, and honest answers that add up to greater value for your investment. Our experienced HVAC specialists are familiar with all makes and models, and focus on repairs that enhance the reliability and performance of your equipment. When the job is complete, rest assured there will be no mess, damage, or discarded debris for you to deal with, and your furnace will be ready to meet demand. At Welzig Heating & Air, we build on a reputation for excellence each time we answer a call for repair across Boulder, Longmont, Louisville, Lafayette, CO & more.


How often you should clean your air ducts depends on your situation. If you or someone in the home has asthma or is acutely allergic to certain airborne materials or pollen, regular duct cleaning may be helpful. The Environmental Protection Agency doesn’t have an official position on the necessity of air duct cleaning unless the ducts have been contaminated by rodents, insects or mold, or you are aware of particles blowing out through the vents. The EPA recommends you have your air ducts cleaned on an as-needed basis. The National Air Duct Cleaners Association (NADCA) suggests having air ducts cleaned every three to five years.
If your AC system is in need of replacement, the national average air conditioner installation costs range from $2,930 to $3,670. Costs can vary greatly depending on whether you are replacing a wall or window unit or a central air system. A central air system is connected to ductwork that runs throughout your house and pumps cooled air into your various rooms via vents and registers. A central air conditioning system is far more costly than wall or window units. Selecting a central AC system that has a high seasonal energy-efficiency ratio (SEER) will likely lower both your carbon footprint and your utility bill. The type of AC system you select, where you live in the country, and the regional costs of HVAC work, duct removal and replacement, and ductwork repairs that are needed are some of the main factors that affect the cost of new air conditioner installation. Here are some examples of average costs for installing forced-air systems.

This single phase 13 SEER split system sweat This single phase 13 SEER split system sweat air conditioning system is designed for residential and commercial applications and consists of the outdoor condenser indoor cased coil and 30 ft. line set. The compact micro-channel condenser is charged with R-410A refrigerant and has a top air discharge. The cased coil ...  More + Product Details Close


Whether you’re looking to have a heat pump installed for the first time or think it’s time for an upgrade to your current system, Goettl Air Conditioning is the company to call. We offer a great lineup of Phoenix heat pumps and will make sure that the one we install in your home is the recommended match to your home’s dimensions and your family’s needs.

Window unit air conditioners are installed in an open window. The interior air is cooled as a fan blows it over the evaporator. On the exterior the heat drawn from the interior is dissipated into the environment as a second fan blows outside air over the condenser. A large house or building may have several such units, allowing each room to be cooled separately.
As a Carrier Factory Authorized Dealer and President’s award winner, we specialize in world-recognized, award-winning, and technologically advanced heating, cooling and air quality products. From air conditioning and heat pumps to furnaces and boilers, you’re going to benefit from increased energy efficiency, decreased sound levels and innovative features that make everyday life easier, more enjoyable and far more comfortable. We provide FREE estimates and flexible financing opportunities. Our goal is to maximize value, sustainability and long-term customer satisfaction.
An air conditioning system, or a standalone air conditioner, provides cooling and humidity control for all or part of a building. Air conditioned buildings often have sealed windows, because open windows would work against the system intended to maintain constant indoor air conditions. Outside, fresh air is generally drawn into the system by a vent into the indoor heat exchanger section, creating positive air pressure. The percentage of return air made up of fresh air can usually be manipulated by adjusting the opening of this vent. Typical fresh air intake is about 10%.

Bonney’s NATE certified technicians will troubleshoot and repair your furnace for safe and reliable operation. Our technicians use state of the art tools including video inspection cameras and exhaust gas analyzers to perform thorough, comprehensive diagnostics when equipment is broken. Furthermore, we arrive in a “warehouse on wheels” stocked with many parts to get your furnace repaired as quickly as possible.  For an unexpected heater repair Bonney offers financing to make your comfort affordable.
Air Conditioning Your home's air conditioner is an essential part of your overall indoor comfort. A properly working system can mean the difference between a cool, comfortable summer and a hot, miserable few months. If you're currently dealing with a broken air conditioner, an inefficient system, or you would like to schedule a routine, pre-season tune-up, Horizon Services is here to help!
In 1820, English scientist and inventor Michael Faraday discovered that compressing and liquefying ammonia could chill air when the liquefied ammonia was allowed to evaporate. In 1842, Florida physician John Gorrie used compressor technology to create ice, which he used to cool air for his patients in his hospital in Apalachicola, Florida. He hoped to eventually use his ice-making machine to regulate the temperature of buildings. He even envisioned centralized air conditioning that could cool entire cities. Though his prototype leaked and performed irregularly, Gorrie was granted a patent in 1851 for his ice-making machine. Though his process improved the artificial production of ice, his hopes for its success vanished soon afterwards when his chief financial backer died and Gorrie did not get the money he needed to develop the machine. According to his biographer, Vivian M. Sherlock, he blamed the "Ice King", Frederic Tudor, for his failure, suspecting that Tudor had launched a smear campaign against his invention. Dr. Gorrie died impoverished in 1855, and the dream of commonplace air conditioning went away for 50 years.[citation needed]

The Rack Cooling Index (RCI) is a metric that measures the percentage of racks in the data centre where the air inlet temperature is at the recommended or allowable level under the guidelines put forth by ASHRAE. RCI (hi) is the metric for racks at the upper limit and RCI (lo) for racks at the lower limit. This metric reveals how uniformly and efficiently a data centre is being cooled.
The most common type of central air conditioning is the split system, which features a large, boxy condenser outside the home and a fan-and-coil system inside, connected by pipes carrying refrigerant. The air is distributed through ductwork. However, not every home can accommodate the ductwork needed to install central air. Split ductless systems are an option for those homes because, as the name indicates, they don’t require ductwork.
In 1902, the first modern electrical air conditioning unit was invented by Willis Carrier in Buffalo, New York.[citation needed] After graduating from Cornell University, Carrier found a job at the Buffalo Forge Company. There, he began experimenting with air conditioning as a way to solve an application problem for the Sackett-Wilhelms Lithographing and Publishing Company in Brooklyn, New York. The first air conditioner, designed and built in Buffalo by Carrier, began working on 17 July 1902.[citation needed]
Electronically Commutated (EC) fans use brushless DC motors which include in-built electronics to convert the AC supply to DC without the need for a separate DC supply. EC fans provide a more efficient (up to 30%) means of airflow through Precision Air Conditioning (PAC) units with the additional benefit of variable speed control via an output signal from the unit controller. Also see EC Fan upgrades.
Buy Home Air Conditioner - We also sell air conditioner equipment like AC condensers and heat pump condensers as well. Need a cased evaporator coil? No problem! Make sure to check out our full lines of trusted air conditioning products – and don't hesitate to contact us with any product-specific questions that may come up during the process of shopping for your new AC.

At Horizon Services, we strive to go above and beyond for every one of our clients. We offer honest, upfront pricing in writing for every service we provide, as well as flexible scheduling to suit your needs, industry leading warranties, and a 100% customer satisfaction guarantee. When you call on us for heating services, our technicians will arrive on-time, every time. If we're even one minute later than the provided window of time, you don't pay. We understand that dealing with a broken or malfunctioning heating system can be incredibly frustrating. Let us turn your stressful situation into a thing of the past!


In order to make your everyday life easier and more enjoyable, Sky Heating & Air Conditioning specializes in state-of-the-art heating and cooling technology, partnering with Trane, Mitsubishi, and Waterfurnace.  We bring you HVAC solutions that represent the best the industry has to offer, ensuring long-term performance and satisfaction.  Whether you’re looking for the design/build of a new system, replacement, or hoping to cut costs and enhance convenience, we answer with proven products.  Our qualified HVAC technicians help you determine the ideal solution for your exact requirements, and make sure you’re happy with every step of the process.  From ductless HVAC to geothermal heating and cooling systems, we offer a wide selection of options and comprehensive services to answer any type of challenge.  Call on Sky Heating & Air Conditioning and let us exceed your expectations today!
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