The HVAC Builder MCP server,
connected in one click.
Design, solve and simulate HVAC systems from real components, weather years and buildings. Connect the official HVAC Builder MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add HVAC Builder to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http hvac-builder https://hvacbuilder.app/api/mcpRun in your terminal, then restart Claude Code. The client will open the vendor's sign-in the first time you use it.
HVAC Builder · https://hvacbuilder.app/api/mcp
What your AI can do with HVAC Builder
Real prompts you can type the moment it's connected — no setup, no docs to read.
“What can HVAC Builder do for me?”
“Show me the tools HVAC Builder exposes.”
How secure is the HVAC Builder MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how HVAC Builder holds up.
Official endpoint
Operated by HVAC Builder (hvacbuilder.app) at its documented MCP endpoint — not a third-party mirror or community re-host.
OAuth sign-in — your account, your rules
You grant access from your own HVAC Builder account and can revoke it there at any time. gate never sees your password.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If HVAC Builder adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
HVAC Builder's server requires OAuth, so it can't be scanned anonymously — connect it in gate and the same scan runs automatically before it goes live.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick HVAC Builder
Choose HVAC Builder in the gate directory. Sign in to your HVAC Builder account to grant access.
Use it anywhere
HVAC Builder's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
Who runs the HVAC Builder MCP server?
The HVAC Builder MCP server at a glance
https://hvacbuilder.app/api/mcpQuestions, answered
Is there an official HVAC Builder MCP server?
Yes — HVAC Builder operates its own remote MCP server at hvacbuilder.app. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect HVAC Builder to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick HVAC Builder in the directory. You sign in to HVAC Builder via OAuth to grant access. From then on, HVAC Builder's tools are available in every client you've connected to gate.
Do I need to host anything?
No. HVAC Builder runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the HVAC Builder MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect HVAC Builder in minutes. No credit card required.
Connect more than just HVAC Builder
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up HVAC Builder in: Claude · Claude Code · ChatGPT · Cursor · VS Code