Mohamed Suhail, Author at BuildMEP

Mohamed Suhail

Founder of BuildMEP | HVAC & Building Automation Professional Practical engineering guides covering HVAC, BMS, controls, electrical systems and MEP applications.

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Domestic water pipe sizing guide showing a copper water main, riser, meter, pressure gauge and three trial pipe diameters

Mohamed Suhail-

August 9, 2026

Domestic Water Pipe Sizing Guide: WSFU, Pressure Loss, and Velocity

How to size domestic water piping using the Water Supply Fixture Unit (WSFU) method and IPC Appendix E Segmented Loss...

Spring return actuator guide showing fail-safe operation, power-loss response, fail-open and fail-closed damper positions in HVAC systems.

Mohamed Suhail-

August 8, 2026

Spring Return Actuators Explained: Fail-Safe Logic in HVAC

BuildMEP HVAC Controls Guide Spring return is one of those actuator specifications that looks simple on a datasheet — until...

The traditional arrangement vs PICV diagram sits immediately after the section explaining what a PICV replaces, and the PICV working principle diagram sits right after the internal-working explanation.

Mohamed Suhail-

August 8, 2026

What Is a PICV? Pressure-Independent Control Valves Explained

BuildMEP Hydronic Control Guide Spend enough time around chilled-water systems and PICVs turn up everywhere — FCUs, AHU coils, chilled...

Differential pressure control guide showing a cutaway hydronic HVAC control valve between high- and low-pressure pipe sections.

Mohamed Suhail-

August 8, 2026

Differential Pressure Control in HVAC Explained

Hydronic controls field guide A control valve can be safe at the system pressure and still fail to close. That...

Demand-controlled ventilation featured image showing a room CO₂ sensor, occupied office, BMS screen and AHU outdoor-air damper.

Mohamed Suhail-

August 8, 2026

Demand-Controlled Ventilation Explained

Practical HVAC Controls Guide Demand-controlled ventilation does not mean “put a CO₂ sensor on the wall and open the fresh-air...

Parking garage CO and NO₂ detection guide showing gas sensors connected to a controller, ventilation fan, VFD and BMS-controlled garage ventilation system.

Mohamed Suhail-

August 7, 2026

NO2 vs CO Detection: Which Does Your Parking Garage Need?

BuildMEP Parking Garage Ventilation Guide Parking-garage gas detection tends to get boiled down to one line: petrol vehicles mean CO,...

EER vs SEER vs COP HVAC efficiency ratings comparison with an outdoor air-conditioning unit

Mohamed Suhail-

August 7, 2026

EER vs SEER vs COP: HVAC Efficiency Ratings Explained

Part of HVAC Controls, Detection & Efficiency: The Complete BuildMEP Guide → BuildMEP HVAC Efficiency Guide A spec sheet showing...

Mohamed Suhail-

August 7, 2026

Chilled Water BTU Meter Sizing: A Practical Guide

Part of HVAC Controls, Detection & Efficiency: The Complete BuildMEP Guide → A BTU meter selected purely by pipe size...

Exhaust fan selection guide for bathrooms and kitchen dining areas showing airflow, duct length and noise considerations.

Mohamed Suhail-

August 6, 2026

How to Choose an Exhaust Fan for a Bathroom and Kitchen/Dining Area

Last reviewed: 6 August 2026 Choosing an exhaust fan is not only about buying a 6-inch or 8-inch model. The...

Mohamed Suhail-

August 6, 2026

BACnet vs Modbus vs 0-10V vs 3-Position: BMS Control Signals Explained

Part of HVAC Controls, Detection & Efficiency: The Complete BuildMEP Guide → Practical BMS Controls Guide The actuator submittal offers...

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Mohamed Suhail

Founder of BuildMEP | HVAC & Building Automation Professional Practical engineering guides covering HVAC, BMS, controls, electrical systems and MEP applications.

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