HVAC Builder
Free plan · From $15/moActively maintained
not read yet
Use
- For
- HVAC engineers designing, solving and simulating air, water and refrigerant systems in the browser
- Price
- Free plan · From $15/mopricing page, read Oct 24, 2026
- Activity
- Actively maintainedrelease 3 weeks ago
- Company
- Geashill, Co · Domain since 2026terms of service · domain registered
- Runs as
- API
- Used for
- draw and solve a packaged rooftop unit
- simulate a building over a typical weather year
- compare control strategies across months and peak conditions
- Has an MCP server (1 in the registry)public registry →
Free plan · From $15/mo
- Run byGeashill, Coterms of service ↗
- Trains on your dataNoprivacy policy ↗
- Privacy policy updated2026-10-12privacy policy ↗
“We do not sell personal data, and we do not use your designs to train AI models.”
privacy policy ↗
These are HVAC Builder's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.
- MCP serverapp.hvacbuilder/hvac-builderverified in the MCP registry
- Stateanswers, requires sign-inchecked 2026-10-24
- Address to connecthvacbuilder.app/api/mcp
- API docshvacbuilder.app/referencethe vendor's page ↗
This card as JSON, for your agent →
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
Figure and bar: visits/mo, estimate · year: online since
- #1
Agentfield
Infrastructure for deploying and managing AI agent systems with routing, execution, memory, and audit capabilities.
182ActiveOpen source2024 - #2
MCPJam
Tests and debugs MCP servers across 16 AI clients locally and in CI/CD pipelines.
112ActiveFrom $24/mo - #3
R-Pro
Field app that calculates superheat and subcooling from gauge readings, ranks likely HVAC faults, and keeps customer equipment records.
4 - #4
HarnessHive
Lets engineers draw wiring harness schematics and routes, deriving BOMs, cut lists and 1:1 formboard drawings from one shared document.
1.2k linking domainsActiveFrom ≈ $167/user/mo - #5
Chinilla
Browser-based simulator for designing system architectures and running discrete event simulations to test behavior before implementation.
66 linking domainsFrom $20/mo2026 - #6
BlockWerkMCP · open
Runs control-system block diagrams in the browser, simulating them with a compiled engine and scriptable through JavaScript or MCP.
Little sign of useActive
Not it? Say what you need
betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use HVAC Builder for?
Sign in to leave a noteWhat is HVAC Builder?
Draws and solves HVAC systems from typed parts in the browser, then simulates them over a year of weather. It is listed in the Atlas under Developer tools and made by Geashill, Co.
Who is HVAC Builder for?
HVAC engineers designing, solving and simulating air, water and refrigerant systems in the browser
How much does HVAC Builder cost?
HVAC Builder has a free plan; paid plans start at $15/mo, per its pricing page on 2026-10-24.
Is HVAC Builder free?
Yes, HVAC Builder has a free plan, per its pricing page on 2026-10-24.
Do people use HVAC Builder?
Little sign of use.
Is HVAC Builder still maintained?
Actively maintained: release 3 weeks ago.
Who owns HVAC Builder?
HVAC Builder is run by Geashill, Co, per its terms of service (2026-10-24).
Does HVAC Builder train AI on your data?
No, per its privacy policy (2026-10-24): “We do not sell personal data, and we do not use your designs to train AI models.”
Is HVAC Builder safe?
We do not audit vendors. What HVAC Builder publishes, read 2026-10-24: on training with your data, “We do not sell personal data, and we do not use your designs to train AI models.”.
How do I cancel HVAC Builder?
In its own words (terms of service, 2026-10-24): “You may cancel a subscription at any time, in the app: the account menu, Manage account , Plan , Cancel plan .”
Does HVAC Builder give refunds?
In its own words (terms of service, 2026-10-24): “We cancel any subscription at once, without a refund of the current period except as section 4 provides, and tokens left over lapse, except the bought tokens section 4 refunds.”
What are alternatives to HVAC Builder?
In Developer tools, by use: Agentfield, MCPJam, R-Pro, HarnessHive, Chinilla, BlockWerk.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
Cookies
Before we count this visit
Analytics and ad measurement tell us which pages and which of our ads do their job: Google Analytics and Google Ads, the Meta pixel, Yandex Metrica, and one first-party id of our own. Nothing is stored until you answer, and declining changes nothing about the site.