Now Available: The PEFY-OA Ducted Outside Air Unit

We are pleased to now carry one of the latest ventilation solutions from Mitsubishi Electric Trane HVAC US (METUS): the PEFY-OA Ducted Outside Air Unit!

Available in 36,000, 48,000, 72,000 and 96,000 BTUH capacities, the PEFY-OA is a high-performance indoor unit that improves comfort by pre-treating and filtering outside air before delivering it to each zone. With three modes of operation: cooling, heating or fan only, the unit heats or cools incoming outside air based upon the ambient temperature and set point, and also provides discharge air temperature control. Compatible with CITY MULTI® systems, the PEFY-OA helps building owners, engineers and architects increase indoor air quality while meeting ventilation requirements in a variety of commercial applications. The unit is ideal in buildings where plenum space is available such as office buildings, schools, hotels and assisted-living facilities.

Additional Features:

  • CITY MULTI R2- and Y-Series system compatibility
  • Zone control for outside air applications
  • Static pressure settings of 0.6 inches, 0.8 inches and 1.0 inch W.G.
  • Discharge air temperature control
  • Integrated condensate lift mechanism providing up to 27-9/16 inches of lift
  • Optional filter box with MERV 13 filters

At Aireco Advanced Products Group (APG) we are proud to offer you products that perform well and are cost effective. The biggest advantage of the PEFY-OA is that it can be used in conjunction with standard evaporators on an R2- or Y-Series system and connect to the same outdoor unit. This distinguishes the PEFY-OA from a 1:1 CFM-R unit, which would require a dedicated outdoor unit, a dedicated branch controller and a single air handler. This means savings for your clients!


For more information on this product, contact today!

VRF: The Complete Package for Choptank Health

Choptank Community Health System (Choptank Health) is a private, nonprofit health center serving the communities of Maryland’s Eastern Shore for the last 30 years. Offering adult and pediatric medical care, dental services, and behavioral health and wellness programs, Choptank Health is an accessible provider for many locals. Ultimately in 2018, leadership decided another location was required.

With plans for a 20,000-square-foot building, two aspects were crucial to the design: the patient-facing areas should be aesthetically pleasing and the mechanical systems should be energy-efficient and save monthly costs. Partnering with APG, RMF Engineering and the architects at George, Miles & Buhr LLC (GMB), Choptank Health selected a suite of products from Mitsubishi Electric including CITY MULTI Variable Refrigerant Flow systems, ventilation equipment and building automation controls. Below, we talk with the project’s engineer about the unique HVAC needs of healthcare facilities and why selecting Mitsubishi Electric was the right fit for the job.

Why did Choptank Health select Mitsubishi Electric VRF?

Choptank Health asked for our recommendation and we suggested Mitsubishi Electric. A big part of this job was the ventilation. By going with Mitsubishi Electric for all of the equipment, we could specify their PremiSys® Dedicated Outdoor Air System (DOAS) and control the entire HVAC system with their building management platform, Diamond Controls™.

Being a 12-hour operation, the facilities manager also wanted the ability to control the building from his desk, iPad or cell phone. A big selling point here was the Diamond Controls – even remotely, he has almost complete control over the entire building

Do you specify Mitsubishi Electric VRF on most of your projects?

We tend to specify Mitsubishi Electric unless an owner or client has another preference. I’ve personally been working with them since around 2009. As an engineer, it’s easier on our end to be masters of one system than multiple.

The performance is there too. This project was open for equals but it was decided that if another manufacturer competed, they would have to prove to Choptank that their product was as competitive as Mitsubishi Electric. Ultimately, the team trusted our opinion.

In healthcare, ventilation is crucial. Why is this HVAC system a good fit?

We specified two PremiSys DOAS units for this building. As this is a healthcare application, it’s really important to have the code-required air change ventilation rates. Since we are bringing in so much outside air, PremiSys allows us to be able to pre-treat it and dehumidify the air before moving into patient and staff spaces. This is especially important on the Eastern Shore. From there, VRF conditions it the rest of the way.

It was important to tie in all these units to Diamond Controls so that the facilities staff can easily monitor and adjust the environment. It really streamlines operation.

Were any other HVAC designs considered before choosing VRF? 

There was a pretty big discussion during design about whether we were going to use a traditional Variable Air Volume (VAV) system or go with VRF. Choptank Health and GMB didn’t want the look of ceiling cassettes in the exam rooms and had previously associated that with VRF. That said, we simply changed to a ducted unit style to achieve the look they wanted. We did concealed ducted units in the exam rooms and lobby area, wall-mounted units in the the mechanical and electrical spaces, and ceiling cassettes in staff areas. With VRF, they can obtain higher-efficiency and cost-effective energy bills, unlike a VAV system.

How has your experience been partnering with APG on this job?

Aireco has been great. Our contact for this job is Harold Bergman and whenever we have questions I can easily text him and get a response in minutes. Ever since 2009/2010, we’ve been working with APG when we design Mitsubishi Electric projects.

The latest Choptank Health location is slated to open in Fall 2019.

METUS Equipment Installed:

  • (3) R2-Series Outdoor Units
  • (1) PUZ Single-Zone Heat Pump Outdoor Unit
  • (1) PKA Wall-Mounted Cooling-Only Indoor Unit
  • (8) PEFY Ceiling-Concealed Ducted Indoor Units
  • (43) PLFY-P Four-Way Ceiling Cassettes
  • (51) Simple MA Remote Controllers
  • (2) PremiSys® MPE DOAS Units with Energy Recovery
  • (1) AE-200 Centralized Controller
  • (1) Diamond ControlsTM Solutions

Why Banks Should Consider VRF Systems

Variable Refrigerant Flow (VRF) systems are becoming more widely recognized as the primary heating and cooling technology of the future and the optimal choice for businesses and institutions interested in reducing operational costs while increasing occupant comfort and sustainability. Starting with the benefits listed below, this issue describes why banks and credit unions should consider VRF systems from Mitsubishi Electric Cooling & Heating.

Zoning and Comfort Control
Most banks have a teller area, a few small offices, a conference room, a break room and an IT closet. VRF’s zoning capabilities offer banks the ability to control each space individually and maintain temperatures appropriate for how the space is used. The teller area, where employees work with customers, will have different conditioning needs than an infrequently occupied conference room. Equipped with an INVERTER-driven compressor, a bank’s VRF system accounts for those differences and adjusts to maintain setpoints as loads change with occupancy, the weather or the time of day.

Control Across Sites
Banks with multiple branches can control VRF systems from a central location and provide levels of remote access to facility managers.

Cost and Value
VRF is known for using only the precise amount of energy needed to maintain the preferred temperature for each zone. This energy efficiency results in lower utility bills compared to what banks would pay with a conventional system. Less well known is how a growing VRF market and greater familiarity with VRF among HVAC contractors has reduced the difference between the upfront cost for VRF systems compared to conventional systems, especially when working with a Mitsubishi Electric Diamond Contractor®. Also, the total cost to install a VRF system is often lower than the cost to install a conventional system due to factors including reduced ductwork and the relative lightness and compact size of VRF equipment. All of these elements make the apparent “premium” a bank might pay for a VRF system negligible compared to the value.

Indoor Air Quality
To provide a healthier environment for bank customers and staff, Mitsubishi Electric VRF systems continuously remove particulates and contaminants from the air. Each zone is equipped with its own washable filter and each filter can last up to 10 years, eliminating the cost and inconvenience of regularly replacing filters. Additionally, the continual operation of VRF systems during part-load conditions helps dehumidify each zone.

Quiet Operation
VRF systems run quietly compared to conventional HVAC systems, making them ideal for professional environments such as banks. Mitsubishi Electric’s CITY MULTI® N-Generation offers four low-noise patterns, in addition to the rated pattern, so banks can ensure customers and staff are never disturbed by operational noise while conducting business.

We’ve built our reputation at Aireco Advanced Products Group (APG) on the expertise and support we provide to help HVAC professionals design and install high-performance VRF solutions for applications of all types. Whether we are providing equipment and support for a large financial services brand as part of Mitsubishi Electric’s National Accounts program, or facilitating the retrofit of a local credit union, we deliver results. To partner with the APG team on any of your upcoming projects, contact us at

VRF for Banking Applications: Tidemark Federal Credit Union

Founded in 1959, Tidemark Federal Credit Union provides financial services to 15,000 members in Delaware and Maryland. When considering HVAC systems for their branch locations in Long Neck, Delaware and Selbyville, Delaware, Tidemark knew VRF would meet their needs and they trusted Allen & Shariff Engineering, LLC (ASE) to provide recommendations and MEP services. Based in Columbia, MD, ASE has provided design build and management services for large-scale construction projects around the world since 1993. Working closely with APG, ASE specified a VRF system with heat recovery from Mitsubishi Electric Cooling & Heating. Chesapeake Climate Control, with offices in Glen Burnie, Maryland and Frankford, Delaware, performed the install. Read the interview below for insights from the project’s mechanical engineer on the system and application.

Why did Tidemark Federal Credit Union (TFCU) choose VRF?

TFCU chose VRF because of its current popularity in the marketplace. Their team is pretty savvy, and they were already aware of the zoning and energy efficiency benefits. They were also aware that the installed costs for VRF systems have decreased in the past few years, which makes the costs comparable to what they would spend on more conventional split-system heat pumps. Another benefit they get from VRF is the passive dehumidification that a VRF system provides by being able to operate at part load conditions. Humidity is an issue we deal with anywhere on the Delmarva Peninsula.

Why was Mitsubishi Electric VRF favored for this job?

I utilized Mitsubishi Electric as the basis of design and recommended it to TFCU. Mitsubishi has been the basis of my designs since I began designing VRF systems about 10 years ago. When I design with Mitsubishi products, I know the quality of the equipment and the support I’ll receive from APG puts us on track for success. The contractor elected to go forward with my recommendation, which I assume they did in part because the pricing was competitive and they have a good relationship with Mitsubishi and APG.

What equipment was specified for the buildings?

The Long Neck and Selbyville locations were built at the same time and have the same design. We specified a CITY MULTI R2-Series system with heat recovery and a mixture of ducted and ductless indoor units. Each location has an AE-200A Centralized Controller.

What services and did ASE provide and how did APG provide support? 

ASE provided full MEP design services for both buildings and facilitated the owner’s decision to use VRF. APG provided support during the design process by reviewing the Mitsubishi equipment selections we made using the Diamond Systems Builder software and offering advice and suggestions concerning controls and equipment options. I am sure APG also assisted the mechanical contractor during installation and at startup.

APG was one of the first distributors in our area to provide comprehensive support and training for VRF. Their services and expertise are a big part of why firms like mine continue to specify Mitsubishi Electric products in particular. Together, we’re delivering results for our customers and giving VRF a good name in the region.

METUS Equipment Installed (for each bank):

  • (1) R2-Series Heat Recovery Outdoor Unit
  • (5) PEFY-PNMAU-E3 Ceiling-Concealed Ducted Indoor Units
  • (1) PKFY-P30NKMU-E2 Wall-Mounted Indoor Unit
  • (2) PEFY-P24NMAU-E2 Ceiling-Concealed Ducted Indoor Units
  • (3) PMFY-PNBMU-ER5 One-way Ceiling Cassettes
  • (1) AE-200 Centralized Controller

Put VRF in Your Office!

It’s no secret that Variable Refrigerant Flow (VRF) technology has a variety of benefits that are of value to our customers. In particular, CITY MULTI® from Mitsubishi Electric Cooling & Heating provides commercial buildings with energy-efficiency, cost savings, design flexibility, top-of-the-line controls and supreme comfort. In recent years, we’ve noticed more mechanical contractors and engineering firms choosing VRF for their own offices – and with great results! Every day you design, specify and install CITY MULTI; why not upgrade your office?

Get First-Hand Operational Experience

It’s one thing to install a VRF system and it’s another to work in a building with a zoned, INVERTER-driven system. By utilizing VRF in your own HVAC system, you can better understand how the controls, ventilation and individual heating and cooling units operate, troubleshoot issues more effectively and experience the customer’s perspective. As discussed in this newsletter’s featured project profile, Mechanical Engineering & Construction Company sees their CITY MULTI system as a sales and training tool.

“When we talk to clients or contractors who want us to do work in their building, we show our office as an example of what their system could be, what it looks like and what the flexibility is like. We also train our own technicians with it. If someone new starts, we’ll have them look and interact with all the equipment to show them how it operates on the job.”

Steve Wagner, Mechanical Engineering & Construction Company

Put Us to the Test!

Many of you have already partnered with us on projects around the area. Whether you’re building your company’s new office or retrofitting an existing one, become an Advanced Products Group (APG) client and experience the customer viewpoint. From initial concepts, to start-up and commissioning, we are happy to serve our customers with comprehensive technical support. As always, we’ll provide design assistance and work closely with you to achieve the system scope and layout that best fits your building.
For more information, email