Math & Numbers

EER ↔ SEER ↔ COP Converter (Refrigeration Efficiency)

Convert between the three common refrigeration efficiency metrics: COP (dimensionless, W/W), EER (Btu/(W·h)), and SEER (seasonal Btu/(W·h)). Standard relations: COP = EER / 3.412, EER = COP × 3.412, SEER = EER / α (α seasonal weighting factor, default 0.875, adjustable 0.8–0.91 to match regional standards such as ARI 210/240). Enter any one metric and all three are reported.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/eer-seer-converter' \
  -H 'Content-Type: application/json' \
  -d '{"fromMetric":"EER","value":10.5,"seerEerFactor":0.875,"decimalPlaces":4}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/eer-seer-converter

Parameters

Name	Type	Required	Description
fromMetric	select	No	Which metric the Input Value represents. The other two are computed from it.
value	number	Yes	Value of the selected Input Metric.
seerEerFactor	number	No	Seasonal weighting factor α relating SEER and EER (SEER = EER/α). Default 0.875 (common US approximation). Adjust to match regional standards (0.8–0.91).
decimalPlaces	number	No	—

Response format

JSON result

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-eer-seer-converter": {
      "name": "eer-seer-converter",
      "description": "Convert between the three common refrigeration efficiency metrics: COP (dimensionless, W/W), EER (Btu/(W·h)), and SEER (seasonal Btu/(W·h)). Standard relations: COP = EER / 3.412, EER = COP × 3.412, SEER = EER / α (α seasonal weighting factor, default 0.875, adjustable 0.8–0.91 to match regional standards such as ARI 210/240). Enter any one metric and all three are reported.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=eer-seer-converter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "eer-seer-converter",
    "arguments": {
  "fromMetric": "EER",
  "value": 10.5,
  "seerEerFactor": 0.875,
  "decimalPlaces": 4
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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EER ↔ SEER ↔ COP Converter (Refrigeration Efficiency)

json· JSON resultOpen tool

Name

Type

Required

Description

fromMetric

select

Which metric the Input Value represents. The other two are computed from it.

value

number

Yes

Value of the selected Input Metric.

seerEerFactor

number

Seasonal weighting factor α relating SEER and EER (SEER = EER/α). Default 0.875 (common US approximation). Adjust to match regional standards (0.8–0.91).

decimalPlaces

number

—

{ "mcpServers": { "elysiatools-eer-seer-converter": { "name": "eer-seer-converter", "description": "Convert between the three common refrigeration efficiency metrics: COP (dimensionless, W/W), EER (Btu/(W·h)), and SEER (seasonal Btu/(W·h)). Standard relations: COP = EER / 3.412, EER = COP × 3.412, SEER = EER / α (α seasonal weighting factor, default 0.875, adjustable 0.8–0.91 to match regional standards such as ARI 210/240). Enter any one metric and all three are reported.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=eer-seer-converter", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "eer-seer-converter", "arguments": { "fromMetric": "EER", "value": 10.5, "seerEerFactor": 0.875, "decimalPlaces": 4 } } }