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APG: Setting the Standard for Technical Support

At Advanced Products Group (APG) we are dedicated to providing our customers the most intelligent, high performance and sustainable commercial building solutions. That said, we don’t just provide products, we deliver experience and ongoing support.

As the first distributor to carry Mitsubishi Electric CITY MULTI® VRF technology in Washington, D.C., Maryland and Virginia, APG is an industry leader that understands the importance of technical education and guidance. We want to be your partner in every project, from start up to commissioning to ongoing support. Review our technical support offerings below to see how we can best assist you.

For over five years, APG has offered year-round, comprehensive and hands-on training for Mitsubishi Electric equipment. In each course, instructors Tim Kemp and Mike Cash fully introduce concepts and theories along with in-depth functional studies of the technologies employed. Concepts are reinforced through practical troubleshooting exercises with the equipment.

Classes Available:

  • 3-Day CITY MULTI Service
  • 2-Day M- & P-Series Service
  • 4-Hour M- & P-Series Overview*

*(To note: Contractors can schedule Aireco to teach on-location for hourly classes.)

Training Facilities
APG has two training facilities located in Savage, Maryland and Newport News, Virginia. In addition to hosting classes, APG’s state-of-the-art facilities allow us to recreate and troubleshoot a customer’s issue in-house, providing you with timely and accurate guidance in the field.

Lunch and Learns
We want to provide you with viable solutions for the everyday issues you experience. Our Lunch and Learn program was designed for just that! Each informational session is 60 – 70 minutes and topics are decided upon between you and the instructor. CEUs are available and APG staff will travel to your location. For more information or to book a Lunch and Learn, email

In the Field Support
Anytime you’re on a job site and in a difficult situation, APG is here to support you. Once you’ve completed one of our classes, our instructors hand over their direct contact info for use in the field. Unlike an automated system or online tech support, you’ll receive accurate guidance from an experienced technician.
For further information on the APG Difference, visit our website.

Real Life Technical Support Q+A

To give a little more insight into the benefits of our technical support and training programs, we spoke with two installing contractors on their experiences working with APG.

Describe the nature of your company’s work.

We work on a lot of custom maintenance agreements and also develop solutions for our clients’ mechanical needs. In addition to HVAC, we do electrical, plumbing and controls as well — a full service provider here in Southwest, Virginia.

What APG class did you complete and what was your experience?

I took the Diamond System Builder training. While we are not dedicated to any specific manufacturer, we have some clients that have the CITY MULTI product line. The class was great — the software gives you the ability to design for any unique situation and provides you with the paperwork required for the customer.

All in all, I found it very informative. The first part of the day was more instructional and in the second half we were able to design systems of our own. The course gives you enough capability to go out on your own with backup support from the local APG reps.

Can you describe a situation where you contacted APG for technical support?

Absolutely! We’d been involved in servicing CITY MULTI units that we did not install. To properly service the equipment, our team needed some feedback on the system and reached out to APG. They had all the start-up history and had the original DSV which really allowed us to get our bearings with the job. Not only were we able to get our customer’s equipment running great again, it made us look like heroes since we had a solution with APG supporting us behind the scenes. It was a win for both of us.

Overall benefit of working with APG?

We enjoy working with them and feel that their response time is quick and their information is accurate. They really work hard on keeping up with system history — that’s super important to us.

Describe the nature of your company’s work.

We mostly have service work and contracts for HVAC, construction, plumbing services and so on — if it’s mechanical we do it. However, our HVAC department also does VRF installations.

What APG class did you complete and what was your experience?

I went through the CITY MULTI three-day class that reviewed installation, commissioning and service. I found it to be very informative. The class gives you all the tools you need to do your job. The instructor, Tim Kemp, had a response for any and every question that you could think of. He also gave everyone in the class a contact card and told us to call if we needed assistance on a job.

For the last part of the class, Tim was able to create multiple issues with the equipment and then using the maintenance tool and MyLinkDrive we had to troubleshoot the issues.

Can you describe a situation where you contacted APG for technical support?

Yes. Our local rep Bill Warner has been invaluable. I’ve had to call him a couple different times for help in various scenarios. Even if it’s something as simple as going through the flagging process for the start-up of Mitsubishi Electric equipment, he’ll walk you through it and answer any questions.

Overall benefit of working with APG?

We’ve got some jobs coming up that are design builds. Other companies we work with are not as prepared. With APG, every “i” is dotted and every “t” is crossed. Every resource is planned perfectly. We went to a job site in Covington the other day and Bill was right there with us to walk through the system layout with the client. They make each job easy and folks are seeing the difference in quality.

Introducing the Belimo Energy Valve

The Belimo Energy Valve is the latest addition to our Advanced Products Group (APG) family. At APG, we are proud to offer our customers innovative technologies that make your job easier and provide efficient operation. Read below to learn how the Belimo Energy Valve can do just that!

Low Delta T Syndrome
Low Delta T syndrome occurs when the difference between supply and return chilled water temperatures across an Air Handling Unit (AHU) coil is less than the intended design specifications, sending low temperature return water to the chiller.

Causes of Low T Syndrome
Low Delta T has many causes including coil degradation, oversizing of pumps and valves or lack of dynamic balancing. Whatever the cause, the outcome is a poor-performing HVAC system that does not operate as it was designed.

Effects of Low Delta T Syndrome
When there is a call for more cooling, the valve at the air handler opens farther in a wasteful effort to achieve control settings. This occurrence can go on for years undetected and it often results in the inefficient use of chillers and pumps. This means years of wasted energy, years of wasted water and years of wasted money and resources for a building owner. These costly inefficiencies affect building occupants and have a negative impact on the environment.

The Solution
The Belimo Energy Valve is the solution. The built-in Belimo Delta T Manager™ continuously measures the differential temperature between the supply and return water across the valve and compares it to the desired Delta T setpoint. If the actual Delta T drops below the setpoint, the valve readjusts itself to improve performance. The Belimo Energy Valve is a smart IoT device with built-in BACnet capability providing real-time data and diagnostics. It has the ability to record different data points over 13 months and for its lifetime if connected to the Cloud. With ultrasonic flow measurement and Belimo’s patented glycol meter built in, the Energy Valve redefines the term “Smart Valve.”

In the Field
An AHU at a technology facility utilizing the Belimo Energy Valve with their Delta T Manager was able to increase the Delta T from 6°F to 15°F and used 2.5 times less water than a conventional control valve to achieve 60 tons of cooling capacity. Both the diagnostic and prognostic capabilities of the Belimo Energy Valve proved to be extremely useful for ensuring high performance and meeting strategic energy goals.
To find out more about the features and benefits of Belimo’s Energy Valve you can schedule a lunch and learn with us (CEU’s available) or visit Belimo’s website.

Water-Source VRF and Lossnay Ventilation for Historic Commercial Buildings

The Gordon Feinblatt Lawfirm has been serving the Baltimore area since 1953. Located in the city’s historic Garrett Building, the firm is committed to the location but decided to start renovating a few years ago when their outdated boiler/chiller set up was no longer serving employees or its clients well. They opted to renovate the 13-story building one floor at a time. The solution? Water-Source Variable Refrigerant Flow (VRF) technology with Lossnay ventilation from Mitsubishi Electric Trane HVAC US (METUS).

Below you’ll hear from us (the distributor) and Henry Adams Consulting Engineers (the HVAC engineer) on why VRF was the right solution for the building.

Why was water-source VRF the best option for this project?

Updating the chiller/boiler system was not a good option. They were looking at both cost savings and efficiencies but weren’t able to provide the type of comfort their customers were asking for with their current system. Baltimore City has a chilled water plant. The cost to bring that water to the building would have been extravagant. So using METUS water-source VRF was a fix we could give them to stay within their budget and give them better performing cooling and heating.

Previously, the law firm had comfort issues. How did this update address that?

Before, they weren’t able to provide the type of comfort their customers were asking for. With the update, we have a unit in every individual office. Each lawyer has their own thermostat. Now that one unit can run heating while another runs cooling simultaneously, all their comfort issues went away.

Why was Lossnay specified for this job?

With modern code, you have to provide fresh makeup air. There wasn’t room in the existing building to do DOAS or bring in 100 percent outside air. But the building does have chases. With the Lossnay unit, we’re able to exchange the energy – while the unit is exhausting air, at the same time it’s bringing in air and recovering some of the energy on the way. With this system, we’re able to introduce the new fresh air into each office. Lossnay is also a great retrofit product when you’re limited on space and confinement. At Aireco, we always try to find the right application to alleviate space issues and meet modern code requirements.


How did water-source VRF accommodate multiple renovations over the years?

Water-source VRF allows the firm to keep their existing central cooling and heating unit online for the floors not being renovated, and we tied the new units into their central water loop. It just makes sense to utilize that central plant and capacity while it’s available instead of adding additional cooling or heating equipment.

Why was Mitsubishi Electric specified versus other brands?

When we did the original project in 2010, we designed around Mitsubishi Electric equipment because at that point we had the most experience with that manufacturer. We trust their equipment because we’ve had a long track record with it. We’ve never really had any major issues with their equipment – it’s reliable. And from my perspective, the heat-recovery, two-pipe system is a much more simplified design for a project like this.

Cost-Effective and Efficient Ventilation of School Settings

With ever-increasing Indoor Air Quality (IAQ) requirements for educational facilities, finding the right ventilation equipment can be a challenge, particularly when schools request systems that provide maximum comfort with low-energy costs. At APG, we are proud to offer products such as Mitsubishi Electric’s PremiSys® Fusion Dedicated Outside Air System (DOAS) that mitigate these challenges easily.

PremiSys Fusion is a smart solution when a relatively large amount of outside air is required. It is designed to handle up to 100 percent outside air with optional energy recovery. The units are pre-engineered to provide semi-custom flexibility. They are also 20 percent more efficient than traditional DOAS units — providing payback up to 1.5 years sooner and points toward LEED® certification. Unlike a traditional DOAS that provides cooler-than-needed temperatures, PremiSys Fusion offers room-neutral conditions. For your next school or university project consider specifying PremiSys Fusion – the solution that effectively improves IAQ, allows for design flexibility and operates efficiently.

For more information, visit