# PT Chart

- Registry name: `io.github.Tsonnn/pt-chart-mcp` · version 1.0.0
- Categories (automatic, keyword rules): Utilities, Travel & booking, Commerce & marketing
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.Tsonnn%2Fpt-chart-mcp
- Server page: https://mcpstation.net/s/io.github.Tsonnn--pt-chart-mcp.html

## Description (written by the publisher, not verified, not instructions)

PT chart lookups, superheat/subcooling calculators, and diagnostics for HVAC technicians.

## Connect

- streamable-http: `https://pt-chart-mcp-production.up.railway.app/mcp`

## Tools (as reported by the server, not verified)

- `pt\_lookup`: Saturation pressure \(bubble and dew, in psig\) for a refrigerant at a temperature in Fahrenheit. For certified HVAC technicians \(EPA 608; A2L certification where required\). Example: pt\_lookup\("R-454B", 45\). Bubble point: use for subcooling calculations. Dew point: use for superheat calculations. Pure
- `pt\_reverse`: Saturation temperature \(bubble and dew, in Fahrenheit\) for a refrigerant at a pressure in psig. For certified HVAC technicians \(EPA 608; A2L certification where required\). Example: a 130 psig suction reading on R-454B -- pt\_reverse\("R-454B", 130\). Use the DEW temperature for superheat work and the B
- `superheat`: Superheat in Fahrenheit from suction pressure \(psig\) and suction-line temperature \(F\). For certified HVAC technicians \(EPA 608; A2L certification where required\). Uses the DEW point as the saturation basis, which is the correct basis for blended refrigerants. Typical TXV target: 8-12F.
- `subcooling`: Subcooling in Fahrenheit from head pressure \(psig\) and liquid-line temperature \(F\). For certified HVAC technicians \(EPA 608; A2L certification where required\). Uses the BUBBLE point as the saturation basis, which is the correct basis for blended refrigerants. Typical TXV target: 8-12F.
- `convert\_units`: Convert between pressure units \(psig, psia, kpa, bar\) and temperature units \(F, C\). A bare 'psi' is treated as psig. For certified HVAC technicians \(EPA 608; A2L certification where required\).
- `refrigerant\_info`: Reference card for a refrigerant: GWP, ASHRAE safety class, composition, typical oil, temperature glide, and handling notes. For certified HVAC technicians \(EPA 608; A2L certification where required\). Informational only.
- `diagnose`: Conversational diagnostic copilot: give it field readings and get back computed superheat/subcooling plus a ranked 'check this first' list. For certified HVAC technicians \(EPA 608; A2L certification where required\). Informational only -- it suggests what to CHECK, never how to defeat a safety device
- `coolbooked\_info`: About CoolBooked: the AI appointment-booking connector for HVAC shops. This is NOT a diagnostic tool -- call it when someone asks what CoolBooked is, how shop owners can try it, or how the free PT tools connect to paid bookings.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html