HVAC engineering guides
246 practical guides on commercial HVAC design, testing, commissioning and operation, with dedicated sections on data center cooling, cleanrooms and critical airflow control. Written for Canadian buildings and codes.
HVAC fundamentals and load calculations
Psychrometrics, heat gain, sizing and the design basics every commercial project starts from.
16 guidesAir systems and air distribution
Air handlers, fans, ductwork, terminals and diffusers: moving the right air to the right place.
20 guidesHydronic systems
Chilled water, heating water, pumping and piping design for commercial buildings.
18 guidesChillers, boilers and central plants
Selecting, arranging and operating the equipment at the heart of large HVAC systems.
15 guidesRooftop units, VRF and packaged systems
Unitary equipment, variable refrigerant flow and split systems for small and mid-size buildings.
11 guidesVentilation and indoor air quality
Outdoor air, filtration, humidity and contaminant control for healthy buildings.
15 guidesControls and building automation
Sequences of operation, BACnet, sensors and the logic that makes systems perform.
15 guidesTesting, balancing and commissioning
Proving systems work as designed, from airflow readings to functional tests.
15 guidesEnergy efficiency and decarbonization
Heat pumps, heat recovery, energy codes and the path to low-carbon buildings.
18 guidesData center cooling and HVAC design
Air and liquid cooling, containment, redundancy and efficiency for mission-critical facilities.
30 guidesCleanroom HVAC design
Classification, airflow, pressurization and validation for controlled environments.
17 guidesAir valves and critical airflow control
Venturi air valves, room pressurization and precise airflow control for labs, hospitals and cleanrooms.
15 guidesHVAC by building type
What changes when the building is a hospital, lab, school, kitchen, arena or warehouse.
18 guidesCodes and standards in Canada
The codes, CSA standards and ASHRAE documents that shape Canadian HVAC work.
11 guidesHVAC fundamentals and load calculations
- Air density, altitude and HVAC design in Calgary and the Rockies
- Commercial cooling load calculations explained
- Diversity and safety factors in load calculations
- Envelope heat loss: U-values, thermal bridging and infiltration
- Heating load calculations for Canadian climates
- Internal heat gains from people, lighting and equipment
- Part-load performance: why buildings rarely run at design
- Psychrometrics for HVAC engineers: a practical guide
- Refrigeration cycle basics for commercial HVAC
- Rules of thumb in HVAC sizing and why they fail
- Selecting outdoor design conditions for Canadian cities
- Sensible and latent heat: why the ratio matters
- Solar heat gain through glazing and how to control it
- Thermal comfort and ASHRAE Standard 55
- Units and conversions every HVAC engineer uses
- Zoning a commercial building for HVAC
Air systems and air distribution
- Air handling unit components and configurations
- Chilled beams: active and passive systems
- Constant volume vs variable air volume systems
- Dedicated outdoor air systems (DOAS) explained
- Diffuser and grille selection for comfort and low noise
- Displacement ventilation in commercial spaces
- Duct design methods: equal friction, static regain and more
- Duct sealing classes and SMACNA leakage standards
- Duct static pressure and how to reduce it
- Economizers: types, controls and common failures
- Exhaust system design for commercial buildings
- Fan arrays and fan wall technology
- Fan coil units in commercial buildings
- Fan laws and how to apply them
- Fan selection: curves, efficiency and system effect
- HVAC noise and vibration control
- Mixing boxes, stratification and freeze protection
- Return air plenums: benefits, risks and code limits
- Underfloor air distribution design
- VAV box types and selection
Hydronic systems
- Air and dirt separation in hydronic systems
- Chilled water system design fundamentals
- Condenser water systems and cooling towers
- Control valve selection and authority
- Expansion tanks and system pressurization
- Glycol systems: concentration, freeze protection and performance
- Heating hot water system design
- Hydronic heat pump loops
- Hydronic piping sizing and velocity limits
- Low delta-T syndrome and how to fix it
- Pressure-independent control valves: pros and cons
- Primary-secondary vs variable primary flow
- Pump selection and system curves
- Radiant heating and cooling systems
- Snow melting system design
- Steam systems in older Canadian buildings
- Variable speed pumping and differential pressure setpoints
- Water treatment for closed and open loops
Chillers, boilers and central plants
- Boiler plant design and sequencing
- Central plant redundancy and N+1 design
- Chiller plant sequencing and optimization
- Chiller selection: efficiency, IPLV and part-load
- Chiller types: centrifugal, screw, scroll and absorption
- Combined heat and power for commercial facilities
- Condensing boilers: getting the efficiency you paid for
- Cooling tower selection and winter operation
- District energy connections for commercial buildings
- Heat recovery chillers
- Plant room layout and serviceability
- Refrigerant regulations and low-GWP options in Canada
- Thermal energy storage: ice and chilled water
- Water-cooled vs air-cooled chillers
- Waterside economizers and free cooling in Canada
Rooftop units, VRF and packaged systems
- Cold climate heat pumps for commercial buildings
- Computer room air conditioners vs comfort cooling
- Ductless mini-splits in commercial applications
- Heat recovery VRF vs heat pump VRF
- Make-up air units: direct-fired and indirect-fired
- Packaged terminal units and hotel HVAC
- Replacing rooftop units: what to check first
- Rooftop unit selection for commercial buildings
- VRF design: refrigerant piping, leak limits and CSA B52
- Variable refrigerant flow (VRF) systems explained
- Water source heat pump systems
Ventilation and indoor air quality
- ASHRAE Standard 62.1 ventilation rate procedure
- Airborne infection control in commercial HVAC
- Building pressurization and infiltration control
- Condensation and mould prevention
- Dehumidification strategies for commercial buildings
- Demand-controlled ventilation with CO2 sensors
- Energy recovery ventilators and heat recovery ventilators
- Filtration: MERV ratings, HEPA and pressure drop
- Garage ventilation and CO/NO2 detection
- Humidification in cold climates
- Indoor air quality testing and what to measure
- Odour control and exhaust re-entrainment
- Outdoor air intake placement and design
- UV germicidal irradiation in air systems
- Ventilation for wildfire smoke events
Controls and building automation
- ASHRAE Guideline 36 high-performance sequences
- Alarm management in building automation
- BACnet basics for building owners
- Building automation system upgrades and migration
- Chilled water and condenser water reset strategies
- Cybersecurity for building automation systems
- Fault detection and diagnostics (FDD)
- Integrating HVAC with lighting and access control
- Occupancy-based HVAC control
- PID control loops and tuning
- Sensor selection, location and calibration
- Static pressure reset with trim and respond
- Supply air temperature reset strategies
- Trend logging and using BAS data
- Writing clear sequences of operation
Testing, balancing and commissioning
- Air balancing procedures and instruments
- Commissioning for LEED and green building programs
- Commissioning process: from OPR to turnover
- Common deficiencies found during commissioning
- Duct leakage testing procedures
- Functional performance testing
- Hydronic balancing methods
- Integrated systems testing and CAN/ULC-S1001
- Ongoing and monitoring-based commissioning
- Owner's project requirements and basis of design
- Reading a TAB report
- Retro-commissioning existing buildings
- Seasonal testing and deferred commissioning
- TAB certification bodies: AABC, NEBB and TABB
- What testing, adjusting and balancing involves
Energy efficiency and decarbonization
- Air-to-water heat pumps for commercial heating
- Benchmarking building energy use
- Building energy modeling for HVAC design
- Electrification of commercial heating
- Embodied and operational carbon in HVAC systems
- Geothermal heat exchange for commercial buildings
- HVAC energy audits: ASHRAE Level 1, 2 and 3
- Heat pump retrofits in commercial buildings
- Heat recovery strategies in commercial HVAC
- Life-cycle cost analysis for HVAC options
- Measurement and verification of energy savings
- NECB 2020 and HVAC compliance
- Net-zero ready building HVAC strategies
- Night setback and optimal start
- Reducing fan energy
- Reducing pump energy
- Solar thermal and PV integration with HVAC
- Utility incentives for HVAC upgrades in Canada
Data center cooling and HVAC design
- ASHRAE TC 9.9 thermal guidelines for data centers
- Airflow management: blanking panels, cable cutouts and leakage
- Battery and UPS room HVAC
- CFD modeling for data centers
- CRAC vs CRAH units
- Chilled water plant design for data centers
- Commissioning data center cooling systems
- Continuous cooling and thermal ride-through
- Coolant distribution units (CDUs) and liquid cooling loops
- Cooling high-density racks and AI workloads
- Data center cooling controls and DCIM integration
- Data center cooling design: an overview
- Data center cooling redundancy: N+1, 2N and Uptime tiers
- Data center heat reuse and district heating
- Data center site selection and climate
- Direct-to-chip liquid cooling
- Edge and modular data center cooling
- Evaporative and adiabatic cooling for data centers
- Fire suppression interactions with data center HVAC
- Free cooling and economizers for data centers in Canada
- Hot aisle and cold aisle containment
- Humidity control and static electricity in data centers
- Immersion cooling: single-phase and two-phase
- In-row and rear-door heat exchanger cooling
- Load bank testing for cooling validation
- Power usage effectiveness (PUE) and how to improve it
- Raised floor vs slab cooling
- Retrofitting legacy data centers for higher density
- Server room and telecom closet cooling
- Water usage effectiveness (WUE) and water-free cooling
Cleanroom HVAC design
- Air change rates and airflow in cleanrooms
- Cleanroom HVAC design: an overview
- Cleanroom certification and testing
- Cleanroom energy efficiency
- Cleanroom pressurization cascades
- Cleanroom recovery and contamination control testing
- Containment labs: BSL-2 and BSL-3 HVAC
- Fan filter units vs ducted HEPA systems
- GMP cleanroom grades A to D
- HEPA and ULPA filter systems
- Hospital pharmacy compounding rooms (USP 797 and 800)
- ISO 14644 cleanroom classification explained
- Modular cleanrooms
- Pharmaceutical cleanroom HVAC
- Semiconductor and electronics cleanrooms
- Temperature and humidity control in cleanrooms
- Unidirectional vs non-unidirectional airflow
Air valves and critical airflow control
- Air valve controls integration with BACnet
- Air valve materials and coatings for corrosive exhaust
- Air valve sizing and turndown
- Commissioning and verifying venturi air valves
- Fume hood face velocity control and sash sensing
- Hospital isolation room airflow control with air valves
- Laboratory airflow control systems
- Manifolded lab exhaust systems
- Pressure-independent airflow control without flow measurement
- Retrofitting lab airflow controls
- Room pressurization control: offset vs direct pressure
- Shut-off and two-position air valves
- Venturi air valves explained
- Venturi valves vs VAV boxes with airflow stations
- Vivarium and animal facility airflow control
HVAC by building type
- Cannabis and greenhouse growing facility HVAC
- Commercial kitchen ventilation and NFPA 96
- Fitness centre HVAC
- Hospital HVAC and CSA Z317.2
- Hotel and multi-unit residential HVAC
- Ice arena HVAC and dehumidification
- Indoor pool HVAC and dehumidification
- Industrial process ventilation
- Isolation rooms: negative and positive pressure
- Laboratory HVAC and fume hood exhaust
- Long-term care home HVAC
- Museum and archive environmental control
- Office building HVAC
- Operating room HVAC design
- Places of worship and assembly spaces
- Retail and shopping centre HVAC
- School HVAC design
- Warehouse and distribution centre heating and ventilation
Codes and standards in Canada
- ASHRAE 90.1 vs NECB
- ASHRAE Standard 170 for healthcare ventilation
- Accessibility and HVAC controls
- CSA B149 gas installations and HVAC equipment
- CSA B52 mechanical refrigeration code
- Fire dampers and smoke control under Canadian codes
- Mechanical permits and engineering seals in Canada
- National Building Code of Canada: HVAC requirements
- Provincial building codes and HVAC: Alberta, BC and Ontario
- Seismic restraint of HVAC equipment in Canada
- Stairwell pressurization and smoke control systems
Operations and maintenance
- ASHRAE Standard 180 inspection and maintenance
- Belt drives vs direct drives
- Chiller maintenance and oil analysis
- Coil cleaning and its energy impact
- Cooling tower maintenance and Legionella control
- Filter change strategies
- HVAC troubleshooting: hot and cold complaints
- Operator training and O&M manuals
- Planning equipment replacement and capital budgets
- Preventive maintenance programs for HVAC
- Seasonal changeover checklists
- Vibration analysis for HVAC equipment