BTUs & GPUs01 / UNDERSTAND AI

AI in the
HVAC world
for reps and
manufacturers

EPISODE 001 / BEN LYDDANE

01 / 40
BTUs & GPUs01 / UNDERSTAND AI

AI Is a Five-Layer Cake

Jensen Huang’s framework · read from the foundation up

Infrastructure

Data centers, networking and cooling bring the chips together.

02 / 40
BTUs & GPUs01 / UNDERSTAND AI

Today’s conversation

From AI models to the equipment and work behind them.

01

Understand AI

Models, capabilities and the regulation debate

02

Follow the heat

Chips, data centers, power and cooling

03

Connect the tools

Agents, context and systems that work together

04

See it in practice

BuildVision and construction documents

03 / 40
BTUs & GPUs01 / UNDERSTAND AI

How people feel about AI

Different surveys answer different questions.

04 / 40
BTUs & GPUs01 / UNDERSTAND AI

Context windows have grown

Context-window growth · 2018–2025

05 / 40
BTUs & GPUs01 / UNDERSTAND AI

The Transformer

Tokens, attention and next-token prediction

Text pieces → relationships → next-token probabilitiesOpen live explainer ↗
06 / 40
BTUs & GPUs01 / UNDERSTAND AI

The model landscape

Models and the companies behind them. Updated September 14, 2026.

OpenAI

OpenAI

GPT-6 Astra

$852BFunding valuationMar. 31, 2026
Anthropic

Anthropic

Claude Fable 5.1

$965BFunding valuationMay 28, 2026
IPO planned
Google

Google

Gemini 3.8 Flash

$4.21TAlphabet market capSept. 14, 2026
xAI / SpaceXAI

xAI / SpaceXAI

Grok 4.7

$250BxAI acquisition valueFeb. 2026
Release pending
07 / 40
BTUs & GPUs01 / UNDERSTAND AI

AI regulation: who sets the pace?

Calls to pace the frontier meet presidential pushback.

Frontier modelOutside reviewShared rules
SEPTEMBER 14, 2026 / DONALD TRUMP

“The only control or ‘guardrails’ that AI needs is a STRONG AND SMART (High IQ!) PRESIDENT”

“WHOEVER WINS AI, WINS!”

JULY 2026 / DEMIS HASSABIS

A frontier AI standards body

Independent testing before release.
Government oversight.

INDUSTRY EMPLOYEE STATEMENT

1,386 signatories

Calling for international tools to pace automated AI development.

08 / 40
BTUs & GPUs01 / UNDERSTAND AI

Four lenses on an AI system

Each lens answers a different question about the same system.

01

Architecture

How the model computes

Thefanmovesair
AttentionFeed-forward
Next token through

Transformer

GPT-2 connects tokens through attention.

02

Modality

What the model can take in

“What equipment is in this image?”
IMAGE + TEXTOne model reads both inputs

Image + text

Gemini can interpret a photo and a question.

03

Function

What job the system performs

EQUIPMENT SCHEDULE

AHU-1   12,000 CFM
EF-2   1,500 CFM

TagAirflow
AHU-112,000 CFM
EF-21,500 CFM

Document extraction

BuildVision turns schedules into equipment data.

04

Deployment

Where the model runs

OLLAMAModel runs here
On your Macor a hosted server

Local inference

Ollama runs supported models on your Mac.

09 / 40
BTUs & GPUs01 / UNDERSTAND AI

Capability and compute

Measure the result, and the resources needed to deliver it.

Start with the task

A benchmark gives the system a defined problem and checks its answer.

10 / 40
BTUs & GPUs01 / UNDERSTAND AI

HLE: tools change the result

Humanity’s Last Exam · September 2026

11 / 40
BTUs & GPUs01 / UNDERSTAND AI

ARC-AGI-1: accuracy and cost

Verified leaderboard, September 14, 2026

Static patterns

Infer a rule from example grids. Apply it to a new grid.

Accuracy and cost per task

12 / 40
BTUs & GPUs01 / UNDERSTAND AI

ARC-AGI-2: a harder test

Verified leaderboard, September 14, 2026

Harder puzzles

A new task set tests gaps that earlier puzzles can miss.

Compare systems within the same benchmark.

13 / 40
BTUs & GPUs01 / UNDERSTAND AI

ARC-AGI-3: interactive reasoning

Verified leaderboard, September 14, 2026

Interactive tasks

Explore the environment and learn how to win.

Standard harness

GPT-6 Astra Max62.7%
Claude Opus 5 High30.2%
GPT-5.6 Sol Max7.8%

Provider Adapter

99.9%GPT-6 Astra (High)

Different harnesses, different results.

14 / 40
BTUs & GPUs01 / UNDERSTAND AI

Trends in AI

Data centers in space and Musk’s Terafab vision

Data centers in space

Solar-powered satellites could run AI workloads in orbit. Google’s Project Suncatcher is exploring the idea.

Musk’s Terafab vision

Bring logic, memory and advanced packaging together to make chips for Earth and orbit.

1 TW / yearStated target for annual chip output
15 / 40
BTUs & GPUs01 / UNDERSTAND AI

Inside an ASML machine

Laser pulses on tin droplets create the light that prints advanced chips.

From tin to tiny circuits

  1. Laser pulses strike tiny tin droplets.
  2. The plasma emits 13.5 nm extreme ultraviolet light.
  3. Mirrors guide the light to pattern a silicon wafer.
Watch Veritasium’s explanation ↗
16 / 40
BTUs & GPUs01 / UNDERSTAND AI

ChatJimmy.ai: why it is so fast

Taalas builds one model into silicon, so each token needs less data movement.

NVIDIA GPU

Taalas HC1

Move the weights to the math

Each new token needs model weights from HBM memory. Moving them can limit speed.

Build the model into the chip

Fixed weights and compute sit together. The chip avoids repeated weight transfers from HBM.

HC1 / LLAMA 3.1 8B

17,000

tokens / second / user
Reported by Taalas

Less data movement.
Less waiting per token.

The tradeoff: one fixed base model. Fewer bits per weight save space but can reduce answer quality.

2.5 kW server6 nm53B transistors
17 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

One Megawatt Is a Mechanical Problem

An illustrative steady-state IT load

1.0 MW

IT electrical load

≈
3.41 million Btu/h
284 refrigeration tons
18 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

The $7 trillion buildout

Investment and electricity demand describe different parts of the same buildout.

GLOBAL CUMULATIVE INVESTMENT / THROUGH 2030

$7T

McKinsey’s estimated data-center buildout

Compute, infrastructure and delivery across the global buildout.

Compute training + inference
Infrastructure power + buildings + cooling
Delivery equipment + commissioning
19 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

Where projects cluster

U.S. data-center construction · March 2026

20 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

What buyers need from suppliers

Reliability, specification compliance and delivery

21 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

The handoffs that bring a data center online

Example: cooling stays available while one unit is offline.

A detailed 3D rendering of server requirements, engineering design, equipment delivery, and a fully operating data center with rows of active racks, electrical infrastructure and cooling equipment.
  1. 01 / OWNER / OPERATOR

    Define the need

    Keep racks cool during maintenance.

  2. 02 / ENGINEER

    Design the system

    Specify backup capacity and controls.

  3. 03 / MANUFACTURER / SUPPLIER

    Deliver equipment

    Match the spec and delivery date.

  4. 04 / OWNER / OPERATOR

    Data center online

    Power and cooling keep the racks running.

A missed requirement can delay the day the GPUs go online.

22 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

The shift toward liquid cooling

Cooling technology · 2020–2026 estimate

23 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

Follow the Heat, And Both Water Loops

Capturing heat at the chip is different from rejecting it outside

Cold plates absorb chip heat into the IT coolant loop.

24 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

Data center cooling without evaporation

Keep the fluid in a closed loop and reject the heat to outdoor air.

Two separate closed cooling loops. On the left, server racks connect to a YORK YDAM air cooled chiller with a long V-bank coil array and an end control cabinet. On the right, racks connect to a tall louvered closed circuit cooling tower, with a roof fan stack and a cutaway of its sealed coil. The tower runs dry with its spray system off.

YORK YDAM chiller ↗

Air cooled. Closed water loop.
No evaporative water use.

Closed circuit tower

Closed process loop.
No evaporation in dry mode.

Dry mode matters. A closed circuit tower still evaporates spray water in wet mode.

Year-round dry operation requires enough capacity for the climate and load.

25 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

GPU coolant temperatures

From chilled-water plants to warm-water GPUs. The system design sets the temperature.

26 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

Specify the Temperature Interface

Facility-water classes are not universal GPU inlet temperatures

SELECTED ASHRAE FACILITY-WATER CLASSES
W27
80.6°F
W32
89.6°F
W40
104°F
W45
113°F
60°F120°F

Maximum facility supply temperature for each selected class.

A NAMED IT INLET EXAMPLE

113°F

45°C · NVIDIA Vera Rubin NVL72

Confirm coolant, flow and the supplier’s complete operating envelope.

27 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

When Does the Compressor Turn On?

Example: dry cooler + chiller plant, with no evaporative assist

DRY COOLING
IT INLET113°F
−
CDU APPROACH5.4°F
−
COOLER APPROACH9°F
Maximum outdoor dry bulb98.6°F
50°F 120°F

3.6°F below the dry-cooling limit

DRY: fans + pumps
ASSIST: compressor cooling

Illustrative dry cooler + chiller plant. No evaporative assist or selection margin.

28 / 40
BTUs & GPUs02 / FOLLOW THE HEAT

What the Compressor Actually Does

The compressor raises refrigerant pressure and temperature so heat can move outdoors

ILLUSTRATIVE ENERGY BALANCE

Heat absorbed100 kW
Compressor input+ 25 kW
Heat rejected125 kW

The evaporator absorbs heat from the water loop.

29 / 40
BTUs & GPUs03 / AGENTS & TOOLS

Agents: from answers to actions

Construction documents become work your team can use.

“Get this bid ready for our team.”

A project folder, ready to work

  1. Read the RFQFind the bid date, scope and plan links.
  2. Open the connected servicesDownload the drawings, schedules and specs.
  3. Organize the projectSave the files and flag anything missing.
THE WORK YOU GET BACKOrganized project files + an intake record
BuildVision 3D film scene: A project folder, ready to work
BUILDVISION
repworkflows.com ↗RFQ intakePlan reviewSelectionSubmittals
30 / 40
BTUs & GPUs03 / AGENTS & TOOLS

The agent is more than the model

A model chooses the next step. Connected software carries it out.

3D illustration connecting construction documents to a model, selection software and a completed package, with a return path for checking results.
Project contextDocuments + prior work
ModelChooses the next step
Connected toolsRead, write and run
Result + feedbackCheck, continue or stop

One assignment.
Several real actions.

  1. Context tells it what mattersThe current drawings, specifications and your instructions.
  2. The model chooses a toolFind a page, extract a field or run a selection.
  3. The application runs the actionAPIs, connectors or browser controls do the work.
  4. The result drives the next stepInspect the output. Retry, ask or finish.
You define the outcome and access.The team reviews technical judgments and commitments.
31 / 40
BTUs & GPUs03 / AGENTS & TOOLS

OpenClaw and personal agents

The growth of personal agents

32 / 40
BTUs & GPUs03 / AGENTS & TOOLS

Model Context Protocol

A shared connection between AI applications, tools and data

33 / 40
BTUs & GPUs03 / AGENTS & TOOLS

Connect the assistant to real systems

An AI application can use MCP connectors to work with tools and data in other systems.

AI APPLICATION

Your AI assistant

A model, your conversation
and enabled connectors.

OpenAI logoOpenAIChatGPT / APIs
Anthropic logoAnthropicClaude
Google Gemini logoGoogle GeminiGemini CLI / APIs
Grok logoGrokVia xAI API
Tool callsMCPResults

Model Context
Protocol

Meeting recorders & notes

Fireflies logoFirefliesGranola logoGranola

Search transcripts and decisions Direct MCP servers

Calendars

Google Calendar logoGoogle CalendarOutlook Calendar logoOutlook Calendar

Find meetings and create events Via Zapier MCP

Customer records

Salesforce logoSalesforceAccounts, contacts
and opportunities

Look up records and take action Salesforce or Zapier MCP

One request

“Read my last customer call, check the next meeting,
and prepare a Salesforce update.”

Available connectors depend on the AI app or API, your plan and account permissions.

34 / 40
BTUs & GPUs03 / AGENTS & TOOLS

Choose one workflow. Make it useful.

A trigger starts the workflow. Claude uses MCP tools to read and act.

Parts inbox

Trigger: a new email

Outlook logo

Outlook

Read the parts email

A new customer request
hits the inbox.

Outlook MCPvia Zapier
Claude logo
Anthropic logo

Claude skill

Identify the request type

Use your categories
and example requests.

Outlook MCPvia Zapier
Outlook logo

Outlook

Apply a category label

Quote, order status,
return / warranty, technical help.

Weekly sales plan

Trigger: every Sunday night

Salesforce CRM logo

Salesforce CRM

Review account status

Read each rep’s accounts
and active projects.

CRM MCPvia Zapier
Claude logo
Anthropic logo

Claude skill

Choose weekly targets

Target projects and accounts
for each salesperson.

Outlook MCPvia Zapier
Outlook logo

Outlook

Email every salesperson

Send their priorities
for the coming week.

Google Gmail logoGoogle Gmail

Same pattern with Gmail MCP: read an email and apply a Gmail label.

35 / 40
BTUs & GPUs04 / BUILDVISION EXAMPLES

An example from my work

BuildVision bid desk automation

BuildVision scans bid emails, follows connected file-sharing links and organizes construction documents.
36 / 40
BuildVision
BTUs & GPUs04 / BUILDVISION EXAMPLES

The equipment-sales workflow

The work around a piece of equipment

repworkflows.com ↗
Open website ↗
37 / 40
BuildVision
BTUs & GPUs04 / BUILDVISION EXAMPLES

BuildVision example: equipment extraction

LaGuardia Community College Library Renovation Phase II

38 / 40
BuildVision
BTUs & GPUs04 / BUILDVISION EXAMPLES

BuildVision example: drawing takeoff

Symbols, schedules and source drawings

39 / 40
BuildVision
BTUs & GPUs04 / BUILDVISION EXAMPLES

BuildVision example: manufacturer × category

Analytics across selected projects

40 / 40
BuildVision

Presentation

00:00

References & show notes

Ben Lyddane · September 2026 · Interactive edition

Episode 001 / All slides

Original visuals

100%Scroll to inspect at larger sizes.

Presenting this deck

Arrow keys, Page Up/Down or Space: navigate.
F: full screen · P: presenter · O: overview · B: blackout.
Home/End: first/last slide. Escape: close a dialog or the More menu.

Click the slide counter to jump to any slide. More options contains the presenter view, original visuals, motion, blackout and timer.

Drag a 3D model to orbit; double-click to reset. With the model focused, use arrow keys to orbit and Home to reset. Pause motion stops the moving fans and flow markers. Reduced-motion preferences are respected.

Charts, sliders and examples work locally. The presenter window mirrors slide changes and interactive controls. Click an image to enlarge it. External source and demo links require internet.