ToolVet

HVAC Airflow & Load Calc

7 x402 APIs served from hvac-calc.x402tookit.com

Every listing from HVAC Airflow & Load Calc that ToolVet tracks. Each one is called on a schedule without paying and scored out of 100.

At a glance

Listings
7 x402 APIs
Passing at the latest check
7 of 7
Uptime, 30 days
57.6% on average across 7 listings
Price
$0.02 per call
Trust score
58 to 63, median 59
Paying wallets, 30 days
No usage data
Verified owner
None
Security findings
None found
Listed since
20 Oct 2026

No usage data. The x402 Bazaar reports paying wallets for the x402 APIs it lists; MCP servers and APIs submitted directly have none.

All 7 listings

Ranked by trust score.

  • 63trust
    Mixed AirHVAC Airflow & Load Calc

    Mixed-air temperature of two airstreams (return plus outside air) and the outside-air fraction.

    x402 APIOther
    $0.02per call on Polygon
    68.4% uptime, 538 msPassing, checked 4 h ago
  • 59trust
    Sensible HeatHVAC Airflow & Load Calc

    Sensible heat from airflow and temperature difference (1.08 x CFM x dT), or the CFM needed for a heat load.

    x402 APIOther
    $0.02per call on Polygon
    56.3% uptime, 560 msPassing, checked 2 h ago
  • 59trust
    Fan LawsHVAC Airflow & Load Calc

    Fan affinity laws: new airflow, pressure and power after a speed change (flow ~ N, pressure ~ N^2, power ~ N^3).

    x402 APIOther
    $0.02per call on Polygon
    56.3% uptime, 505 msPassing, checked 5 h ago
  • 59trust
    Duct VelocityHVAC Airflow & Load Calc

    Air velocity (FPM) and velocity pressure (in. wg) in a round or rectangular duct from CFM, or the CFM at a velocity.

    x402 APIOther
    $0.02per call on Polygon
    56.3% uptime, 526 msPassing, checked 3 h ago
  • 59trust
    Duct EquivalentHVAC Airflow & Load Calc

    Equivalent round diameter of a rectangular duct (same friction), or the second side that matches a round duct.

    x402 APIOther
    $0.02per call on Polygon
    56.3% uptime, 529 msPassing, checked 2 h ago
  • 59trust
    Air ChangesHVAC Airflow & Load Calc

    Air changes per hour (ACH) from airflow and room volume, or the CFM needed for a target ACH.

    x402 APIOther
    $0.02per call on Polygon
    56.3% uptime, 513 msPassing, checked 1 h ago
  • 58trust
    Efficiency ConvertHVAC Airflow & Load Calc

    Convert EER, COP and kW per ton, and tons, BTU/h and kW of cooling capacity.

    x402 APIDocuments & files
    $0.02per call on Polygon
    53.3% uptime, 527 msPassing, checked 11 h ago

Watch these listings in one feed

How these numbers are made

Each listing is called on a schedule without paying. Listings with usage or a verified owner are checked about every 30 minutes, others about every 6 hours. Uptime is the share of passing checks over 30 days, averaged across this provider's listings. Trust scores follow the published method. The figures on this page can be a few minutes behind the latest checks, and listings hidden after review aren't counted.