OPEN ARCHITECTURE & AI INTEGRATION

Developer API & AI Agent Tool Manifest

HVACLogic is engineered with an open, deterministic mathematical architecture. Connect LLMs, Custom GPT Actions, Python simulation pipelines, or BIM software to our verified ASHRAE and ACCA algorithms.

⚡ OpenAPI 3.1 Spec

Complete machine-readable schema for all 21 calculation modules, query parameters, and validation bounds.

View /api/openapi.json ↗
🤖 LLMs.txt Manifest

Standard markdown manifest designed for LLM agents, web crawlers, and AI search grounding.

View /llms.txt ↗
📖 Entity Glossary Graph

Schema.org DefinedTermSet knowledge triples cross-referenced with Wikidata and ACCA/ASHRAE standards.

Explore /glossary ↗

AI Agent & Tool Calling Example (LangChain / Custom GPT)

Configure your LLM agent to call HVACLogic as an authoritative thermodynamic calculation tool:

// Example: Custom GPT Action / LangChain Tool Definition
{
  "name": "calculate_ac_tonnage",
  "description": "Calculate required residential AC cooling tonnage and design CFM airflow based on floor area and ASHRAE climatic zone.",
  "parameters": {
    "type": "object",
    "properties": {
      "area": { "type": "number", "description": "Conditioned floor area in square feet" },
      "climateZone": { "type": "string", "enum": ["mild", "moderate", "hot_humid", "desert"] },
      "ceilingHeight": { "type": "number", "description": "Average ceiling height in feet (default 8)" }
    },
    "required": ["area", "climateZone"]
  }
}

Registered Deterministic Calculation Endpoints (21)

Module NamePillarStandardsPermalink Route
Digital Ductulator & Air Duct Sizing Toolairflow ductsASHRAE, SMACNA, ACCA/calculators/ductulator
Flexible Duct CFM & Friction Drop Chartairflow ductsACCA, ASHRAE/calculators/flex-duct-cfm-chart
HVAC CFM & Airflow Calculatorairflow ductsASHRAE, ACCA/calculators/cfm-calculator
Kitchen Range Hood CFM & Make-Up Air Sizerairflow ductsHVI, IRC, ASHRAE/calculators/kitchen-hood-cfm
Duct Friction Loss & Total Equivalent Length (TEL) Sizerairflow ductsACCA, ASHRAE, SMACNA/calculators/duct-friction-loss-calculator
MERV Air Filter Sizing & Static Pressure Drop Sizerairflow ductsASHRAE, ACCA/calculators/filter-sizing-calculator
BTU Heating & Cooling Load Calculatorcooling loadsACCA, ASHRAE/calculators/btu-calculator
AC Tonnage & Room Capacity Calculatorcooling loadsACCA, AHRI/calculators/ac-tonnage-calculator
HVAC Model Number Tonnage Decodercooling loadsAHRI/calculators/ac-model-decoder
Mini-Split Multi-Zone Sizing Calculatorcooling loadsAHRI, ACCA/calculators/mini-split-sizing
Target Superheat & Subcooling Charging Calculatorfield diagnosticsEPA, AHRI, ACCA/calculators/superheat-subcooling-calculator
Digital Refrigerant Pressure-Temperature Chartfield diagnosticsNIST, EPA, ASHRAE/calculators/pt-chart
Psychrometric Chart & Moist Air Calculatorfield diagnosticsASHRAE/calculators/psychrometric-calculator
Refrigerant Line Set Charge & Weigh-In Calculatorfield diagnosticsEPA, ASHRAE/calculators/refrigerant-charge-calculator
Heat Pump Sizing & Balance Point Toolheating systemsASHRAE, AHRI, ACCA/calculators/heat-pump-size-calculator
Furnace Sizing & AFUE Efficiency Calculatorheating systemsACCA, AHRI, DOE/calculators/furnace-size-calculator
Hydronic Boiler & Baseboard Sizing Calculatorheating systemsASHRAE, AHRI/calculators/boiler-size-calculator
Garage & Workshop Heater Sizing Calculatorheating systemsASHRAE, ACCA/calculators/garage-heater-sizing
Combustion Air & Confined Space Sizer (NFPA 54 / IFGC)heating systemsNFPA, IFGC, ASHRAE/calculators/combustion-air-calculator
Insulation R-Value & U-Factor Calculatorbuilding scienceIECC, ASHRAE/calculators/r-value-calculator
Building Heat Loss & Infiltration Calculatorbuilding scienceASHRAE, ACCA/calculators/heat-loss-calculator