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GET /v1/heatloss

Steady-state heat loss

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/uvalue-api

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Code snippets

curl "https://api.oanor.com/uvalue-api/v1/heatloss" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/uvalue-api/v1/heatloss", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/uvalue-api/v1/heatloss");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/uvalue-api/v1/heatloss",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "area_m2": 20,
        "formula": "Q = U · A · ΔT.",
        "delta_t_k": 20,
        "heat_loss_w": 124,
        "u_value_w_m2k": 0.31,
        "heat_loss_btu_h": 423.1056,
        "heat_loss_kwh_day": 2.976
    },
    "meta": {
        "timestamp": "2026-06-04T10:18:50.384Z",
        "request_id": "5f14415c-13b3-444c-9ea6-666c19f420cf"
    },
    "status": "ok",
    "message": "Steady-state heat loss",
    "success": true
}