Monthly Archives: July 2017

Get To Know Bry-Air



Bry-Air was founded in 1964 and has been a customer-focused leader in the field of environmental control systems for over 50 years. The Company is a leading manufacturer of desiccant dehumidifier products and services for technically complex applications with critical quality requirements in both industrial and commercial markets.

Bry-Air’s manufacturing facility is located in Sunbury, Ohio with affiliate locations in India, Brazil, Malaysia, Switzerland, China, United Arab Emirates, Philippines, Indonesia, Vietnam, and Bangladesh. Throughout the world, the company maintains a network of more than 400 representatives in 145 countries.

Our success has been and will continue to be based on providing our customers with solutions to their most difficult moisture related challenges in a way that makes it easy to do business with us. We will constantly strive to contribute our technical and practical expertise to each customer focused partnership promptly, accurately and professionally.

We know you will be satisfied with our response to your needs. In fact, I guarantee it! My name is Mel Meyers and I am the President and CEO of Bry-Air. If you are not completely satisfied, contact me at or call me at 877-427-9247.

Do you utilize the products produced by some of our clients?

Mission Statement

  • Consistently offering responsive, innovative and cost-effective solutions to customer problems.
  • Providing external and internal customers with products and services that exceed their expectations
  • Providing our employees with a safe, secure and enjoyable place of employment
  • Continuously improving in everything we do
  • Contributing to improve the quality of life in the communities in which we live and work
  • Building long term partnerships

Quality Statement

  • Provide external and internal customers with products and services which meet their requirements and exceed their expectations
  • Continuously improve in everything we do


Global Clients


Bry-Air delivers desiccant dehumidifier solutions for clients around the world, including in crucial applications for hospitals and water and waste water treatment facilities.

Desiccant Dehumidification in Hospitals

In many health care facilities, there is a necessity to assure good indoor air quality, thus large quantities of outside air must be brought into the building through the ventilation system. This outside air can account for over 90% of the moisture load typically seen in many health care buildings. It is important to remember that bacteria travels on water vapor in the air so in order to avoid microbial growth and surgeon/patient discomfort, this moisture must be removed before the fresh air enters the building. This is particularly true in warm, humid climates.

Conventional air conditioning systems can create high humidity conditions. Cooling coils dehumidify by cooling air which is blown or drawn across the coil surface. The moisture condenses on the coil and drips down into the drain pan. However, the air leaving this coil is essentially saturated and can be as high as 95% relative humidity. In normal air conditioning applications with room temperatures of 72 to 75 °F, there is no particular difficulty associated with this cooling-based dehumidification system. However, when room temperatures must be held at 65°F and lower, conventional cooling systems cannot comply with humidity specifications of building codes without very low temperature, inefficient chilled water systems. In many critical care facilities, humidity can cause problems and expose the institution to unnecessary risk.

Surgical Staff Discomfort

The threat of HIV has led surgical staffs to heavy gowning that was not common in the past. Thick layers of protective garments have forced surgeons and their staffs to demand room temperatures as low as 61 to 65°F, which is turn makes humidity control difficult to achieve with conventional air conditioning systems. When the air is cooled, the humidity can rise to over 75% RH. These cool, damp conditions can cause the surgical staff to perspire and become very uncomfortable.

Hazardous Microbiological Growth

Many bacteria flourish in humid air. For instance, the bacteria responsible for Legionnaire’s (Legionella Pneumophila) survive best at relative humidity levels of 65%. But at relative humidity levels of 35% and lower the bacterium dies very quickly. Many viruses also thrive in high humidity conditions. For example, the Polio virus not only survives, but can actually multiply when the relative humidity is above 80%. Fungi and dust mites can also thrive in humid building materials, which can lead musty odors and respiratory problems associated with sick building syndrome. The high humidity levels found in ductwork downstream of cooling coils is an ideal environment for these types of organisms.

Desiccant dehumidifiers offer a proven alternative for humidity control at low temperatures. Unlike conventional cooling- based equipment, the moisture removal capacity of desiccant systems actually improves at lower air temperatures. Through the use of a Bry-Air desiccant dehumidifier, humid outside air is passed through a desiccant bed, which removes moisture by attracting the water molecules in a vapor state. The dry fresh air is then cooled by the existing HVAC system. Since this make- up air is dry, no moisture condenses to allow contamination to grow in drain pans. And. with low relative humidity downstream of the coil, moisture is not absorbed into duct linings and building materials where it could support microbial growth. Best of all, the air can be supplied to the room at 45% RH no matter how cool the room must be kept.

Benefits of Desiccant Dehumidification

  1. Most local codes require stringent humidity control in operating rooms a very difficult problem at room temperatures of 61-68°F. Bry-Air dehumidifiers allow you to meet all regulatory criteria for operating room humidity without disturbing the HVAC system in the balance of the building. In addition, because Bry-Air dehumidifiers eliminate high RH in the duct work, the HVAC system will comply with guidelines in ASHRAE Standard 62, which calls for keeping humidity in ductwork below 70%RH in order to avoid the risk of microbial contamination.
  2. When operating room humidity is controlled by a Bry-Air desiccant dehumidifier, there is no need to run the main chillers at a low chilled water temperature. With a higher temperature, your central system chillers run more efficiently, thus providing additional sensible cooling.
  3. With a Bry-Air dehumidifier, the surgeon can personally set the temperature and humidity that is most appropriate for each procedure. Those conditions will be maintained regardless of the time of year or capacity of the existing mechanical system in the rest of the building. The relative humidity can be easily controlled to 45% or lower, even at temperatures below 64°F.

Finally, there is some concern as to whether a liquid desiccant, such as Lithium Chloride, or a solid granular system, such as Silica Gel, is the better system to use. According to the ASHRAE Handbook on Equipment 1972 and 1988:

“Tests sponsored by ASHRAE at the University of Toledo on liquid sorption systems and at Pennsylvania State University on solid desiccants indicate that both types of systems have a bacteria removal effect of the same magnitude on air passing through the system. This significant lowering of bacteria levels combined with simultaneous dehumidification can be of paramount importance when air conditioning systems are utilized in hospitals, laboratories, food and pharmaceutical manufacturing environments.”


Dehumidification in Water & Waste Water Facilities

When moisture in the air condenses onto cold pipes, valves, and pumps, a number of destructive effects can occur. High humidity resulting from a damp environment can cause corrosion of metal, deterioration of paint, and failure of electrical components. Sanitation also becomes a concern when a moist location acts as a breeding ground for the development of bacteria, fungus, and molds.

Typically water and waste water treatment facilities are designed to avoid contamination and corrosion in the pipes. Any contamination of water which could be consumed by humans or animals is carefully avoided. However, the condition of the outside of the pipes may be very different. Condensation will occur any time the pipe or valve surface temperature is below the dewpoint of the surrounding air. This condensation and subsequent corrosion problem generally takes place during the spring, summer, and fall months. In more humid climates the problem may be year-round.

In the past, one solution to this problem was to use a refrigeration type dehumidifier to remove moisture from the air. This method, at first, appears to be attractive because of the low cost and easy availability of residential and commercial grade refrigeration systems. In the summer months, this type of system is somewhat effective because the air temperature and dewpoint are high.

However, as these units operate by cooling the air to condense its moisture, their drying capacity is limited when the air is already cool. Many residential and commercial refrigeration units cannot adjust their cooling capacity. Thus, they over-cool the air, eventually freezing the moisture that condenses on the cooling coils. Once this occurs, all beneficial dehumidification stops and the coils must be defrosted.

This is the reason that refrigeration units are effective in the hot summer months but not in the cooler fall and spring months.

A Bry-Air desiccant dehumidifier can provide year-round consistent humidity levels regardless of the season. There are no coils to freeze up and a humidistat guarantees warm dry air, on demand, regardless of ambient conditions.

Sizing the dehumidifier

As a general rule, the CFM of dehumidified air required can be estimated by using the following formula:


For example: Pipe tunnel – total volume is 100,000 cubic feet, including pipes, etc. – then 100,000 cubic feet divided by 25 equals 4,000 CFM of dehumidified air required.

Additional expenses for painting, curtailing rust and other problems brought on by high humidity can cost a typical water treatment facility from $10,000 to $50,000 per year.

Problems such as; sweating pipes, rotting of insulation or pipe coverings, pitting of electrical controls, added electrical motor maintenance, drips and puddles are but a few that can occur. In most cases, the cost of a Bry-Air dehumidifier installation will pay for itself in two years or less by reducing these problems and the associated maintenance that goes along with them. As an added savings, gas can be used for reactivation and a heat recovery coil can also be included. A heat recovery coil can reclaim up to 60% of the reactivation exhaust heat.

Some sewage plants have gas available as a by-product.

A Bry-Air dehumidifier, located in the pipe gallery or other area of high humidity, can maintain a range of 20% – 45% RH year round which completely eliminates condensation and sweating. This is accomplished through re-circulation and there is no need for make-up air. In addition the use of an after-cooling coil can be omitted in most installations since the warm, dry air from the dehumidifier helps to heat the tunnels and pumping areas in the winter. Warm dry air is usually not objectionable in summer, since few people work in these areas regularly. This source of heat is an added advantage of the Bry-Air desiccant dehumidifier, because the relative humidity is lowered and the capability of the air to carry away moisture is increased.

In the past 40 years Bry-Air has sold many desiccant dehumidifiers to water and waste water treatment facilities all over the world and in every state of the U.S. Engineers frequently, look to Bry-Air to provide them with years of trouble free, efficient performance.


Ask An Engineer


If you have any technical or applications specific questions about dehumidification you can use the form below to send a message to the Bry-Air, Inc. team. You can also select the “Chat with an Engineer” feature if you want to access an engineer immediately.

Additionally, you can always contact us via email at or call us at 1-877-4BRYAIR (877-427-9247)


Tranquility® 30 Digital Two-Stage (TE) Series


The Tranquility® 30 Digital Series delivers the ultimate in efficiency, comfort, reliability and serviceability – intelligently driven by the iGate™, the industry’s first two-way communicating control, two-stage compressor, variable speed fan and industry-first vFlow™ internal variable water flow components. The Tranquility® 30 also delivers reliable operation, lower operating cost and compact installation.Available with multiple cabinet options (vertical upflow, vertical downflow and horizontal) the Tranquility® 30 Digital offers a unit for most any installation. With an extended range refrigerant circuit, capable of ground loop (geothermal) applications as well as water loop (boiler-tower) applications, the Tranquility® 30 Digital is among the most flexible in the industry. Standard features such as Copeland UltraTech™ two-stage scroll compressor, ECM variable fan motor, digital communicating controls, powder coated galvanized steel cabinet, stainless steel drain pan and foil-backed air handler insulation are just some of the features of the innovative Tranquility® 30 Digital Series.The Tranquility® 30 Digital Series also offers advanced options that allow for energy efficient, application flexibility. Available options include hot water generator, enhanced iGate™ digital communicating controls, coated air coils, extended range insulation, UltraQuiet package, vFlow™ internal variable water flow, and internal secondary circulator.

  • Sizes 026 (2 ton, 7.0 kW) through 072 (6 tons, 19.3 kW)
  • Advanced Controls – iGate™ communicating control provides advanced unit functionality and comprehensive configuration, monitoring and diagnostic capabilities through digital communication links with the variable-speed fan motor, variable-speed source pump (or modulating valve) and communicating thermostat or configuration/diagnostic tool.
  • Internal Variable Water Flow – Industry-first, built-in vFlow™ replaces a traditionally inefficient, external component of the geothermal system (water circulation) with an ultra-high efficient, variable speed, internal water flow system consisting of an internal variable speed circulator or an internal modulating motorized water valve.
  • EarthPure® (HFC-410A) refrigerant
  • Copeland UltraTech™ two-stage scroll compressors
  • ECM variable speed communicating fan motor with soft start
  • Exceeds ASHRAE 90.1 efficiencies
  • Part load operation significantly lowers annual operating costs
  • Galvanized steel construction with black mat polyester powder coat paint and silver accents
  • Stainless steel drain pan
  • Unique double isolation compressor mounting for quiet operation
  • TXV metering device
  • Extended range (20 to 120°F, -6.7 to 48.9°C) operation
  • Eight safeties standard
  • ClimaDry® II Modulating Reheat Option


ClimateMaster ClimaDry® II



Indoor Air Quality (IAQ) and Relative Humidity (RH) are increasingly becoming design issues that must be addressed by selecting heating and cooling equipment with advanced capabilities. The ClimateMaster ClimaDry® II reheat and dehumidifi cation option offers unique features unlike anything currently available today.

The patented ClimaDry® II option is an innovative means of providing fully modulating reheat without the complication of intricate refrigeration controls. ClimaDry® II is a form of
Hot Gas Generated Reheat, which utilizes one of the biggest advantages of a water source heat pump (WSHP), the transfer of energy through the water piping system. ClimaDry® II simply diverts condenser water through a water-to-air coil that is placed after the evaporator coil.

ClimaDry II Benefits

ClimaDry® II is like no other reheat option on the market. Proportional reheat is controlled to the desired leaving air temperature setpoint (factory setpoint of 72°F) no matter
the water loop temperature. If condenser water is not warm enough, the internal circulating loop increases the water temperature with each pass through the condenser coil. Since dehumidifi cation operation will occur under less than full load cooling conditions a good percentage of the time, it is important to have a reheat function that provides 100% reheat in the spring and fall when the water loop is cool.

Competitors without the ClimaDry® II option typically use an on/off (non-modulating) refrigeration based reheat circuit, typically referred to as “Hot Gas Reheat” (HGR). By passing the hot discharge gas from the compressor through an air coil, these systems do provide the ability to reheat the leaving air. However, these systems must rely on complex controls to operate and contain many additional valves and complex piping schemes. In addition, the performance of HGR units typically fluctuates with the outside air temperature and thus provides a varying amount of dehumidifi cation. Rarely will a HGR unit provide 100% reheat and provide supply air at a neutral temperature, like a ClimaDry® II system.

The simplicity of the ClimaDry® II circuit makes it incredibly easy to maintain. No refrigerant switching valves or hard to diagnose leaky check valves are utilized. No unusual refrigerant pressures occur during the reheat mode. There is no requirement for antifreeze in the reheat circuit.* The refrigerant circuit is identical to a standard ClimateMaster unit (without reheat). Plus, the water loop portion of a ClimaDry® II unit is simple and easy to understand.

Reheat Function

With the ClimaDry® II option, the return air from the space is conditioned by the air-to-refrigerant (evaporator) coil, and then reheated by the water-to-air (reheat) coil to dehumidify the air, but maintain the same space temperature. The moisture removal capability of the heat
pump is determined by the unit’s latent capacity rating.

Unit Features

  • Fully modulating reheat for precise control of supply air temperatures
  • 100% reheat to operate as a dehumidifier
  • “Neutral” 72°F supply air temperature even at part load (non-design) conditions
  • Supply air temperature adjustable from 69°F to 75°F with optional potentiometer
  • Specially designed freeze-resistant reheat circuit does not require antifreeze*
  • Integrated reheat controls – simply attach a humidistat or dehumidistat
  • Microprocessor (DXM) controls standard
  • Simple AHRI certified refrigeration circuit
  • All water system eliminates refrigeration circuit modifications (same refrigeration circuit as units without ClimaDry® II)
  • Stable refrigeration pressures, even at low entering water temperatures
  • All components located inside the cabinet
  • Two-speed fan (direct drive units) automatically controlled for increased latent capacity in reheat mode


About ClimateMaster


ClimateMaster’s role as a domestic energy and geothermal heating and cooling leader extends back to the late 1950s when the company was first founded in Florida. ClimateMaster was later relocated to New York where it started manufacturing water loop heat pump systems, and finally moved its headquarters to Oklahoma City where it continues to thrive today.

For more than 50 years, the company has been developing and producing the industry’s most innovative and energy efficient heating and cooling systems.

Throughout its history, ClimateMaster has continued to invest in the value of its U.S.-patented technologies, expansion of its American manufacturing facilities, growth of its national network of distributors and training of its domestic employees.

Today, the company remains committed to its Engineered and Assembled in the USA heritage by operating a 510,000 square-foot cutting-edge plant in Oklahoma City, sustaining over 600 American jobs and supporting over 1,200 independent dealers.