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Home » Authors » Miles Ryan P.E.
Miles Ryan P.E.

Miles Ryan P.E.

Miles Ryan is a commissioning engineer at Questions & Solutions Engineering. As a major in the Air Force Reserves, he serves as a mechanical systems instructor at the Air Force Institute of Technology. Contact him at miles.ryan@qseng.com.

Articles

ARTICLES

Commissioning Damper Ducted

Correct Installation of the Relief Air Plenum Pressure Sensor

Ensuring accurate measurement and control in air handling unit operations
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Miles Ryan P.E.
May 27, 2026

A guide to proper relief air plenum pressure sensor installation for stable and effective AHU control.


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Miles Ryan Dehumidifier Commissioning

Unstable Transitions in HVAC Operations: Humidifier Disable Logic

A case study by Miles H. Ryan, P.E., revealing how improper humidifier disable logic in AHU controls resulted in significant operational issues
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Miles Ryan P.E.
April 8, 2026

An overlooked control logic detail in hospital air handling units led to recurring freezestat trips and heating instability during the winter, illustrating how small automation choices can have big operational impacts.


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Commissioning Humidity Hospitals

Unstable Transitions in HVAC Operations: Humidifier Enable Logic

Humidifier enable logic glitches and HVAC instability
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Miles Ryan P.E.
February 25, 2026

Commissioning Columnist Miles Ryan shows how a programming oversight caused unexpected humidity control failures during system transitions.


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Economizer Commissioning Miles Ryan

Unstable Transitions in HVAC Operations: Enabling the Economizer

How subtle transitions in economizer control can destabilize HVAC performance – and what commissioning providers need to watch for
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Miles Ryan P.E.
February 11, 2026

When air handlers first enable economizer mode, overlooked control sequences can trigger temperature and humidity spikes that pose real risks to critical environments.


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Cooling Tower Commissioning Chiller Rotation

Unstable Transitions in HVAC: Chiller Rotation Part II

Cooling tower spillover during chiller rotation shows how thoughtful programming, sequence tweaks, and field fixes can tackle system instability in both winter and summer conditions
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Miles Ryan P.E.
December 26, 2025
HVAC systems experience their most challenging moments during operational transitions – when systems first enable, modes shift, or equipment rotates or stages to meet demand. These brief windows often reveal instability that routine operation may hide.
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Commissioning Miles Ryan November

Unstable Transitions in HVAC Operations: Chiller Rotation Part I

How small changes in chiller sequencing can trigger outsize instability – and practical automation strategies to keep HVAC transitions smooth and alarms quiet
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Miles Ryan P.E.
November 28, 2025

Dive into how chiller rotation sequences in variable flow HVAC systems can unexpectedly disrupt operations – and how refined automation logic can help keep things running smoothly.


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Operating Room Supply Air

Unstable Transitions in HVAC Operations: Operating Room Occupancy Modes

Unexpected instability in operating room HVAC often emerges during transitions between occupied and unoccupied modes
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Miles Ryan P.E.
November 12, 2025

In Miles Ryan's latest Commissioning column for ES NEWS, he explores why disruptions occur, how simple automation tweaks can prevent energy waste, and what commissioning engineers should look for in the field.


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Comissioning September Miles Ryan

Do Cx Providers Need To Know BAS Programming?

Learning BAS programming firsthand improved troubleshooting, teamwork, and confidence
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Miles Ryan P.E.
September 24, 2025

ES NEWS' Commissioning columnist, Miles Ryan, demonstrates how understanding BAS programming enhances system testing and troubleshooting.


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BAS Data Trending Smart Tech

Unlocking the Value of BAS Data: Why Smarter Trending Matters

Breaking down how building owners and operators can use advanced trending strategies to boost HVAC performance, solve problems faster, and make data-driven decisions for the future
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Miles Ryan P.E.
August 28, 2025

This column by ES NEWS' Miles Ryan explores how building owners and operators can unlock the full potential of BAS trending for smarter facility management.


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Commissioning BAS Monitor Alarm

Monitoring of Standalone Equipment’s General Alarms

Why general alarm monitoring for standalone equipment is more complex than it seems: common pitfalls, key reasons for integration with BAS, and practical recommendations to ensure reliable alarms
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Miles Ryan P.E.
July 23, 2025

This article explores why designers lean on BAS integration for critical alarms, highlights the most common points of failure encountered during commissioning, and offers practical guidance for ensuring that alarm notifications are both reliable and truly necessary for your facility operations team.


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View All Articles by Miles Ryan P.E.
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