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@maintainable.xyz/house-spec

v1.2.0

Published

Open specification for building maximally maintainable, healthy homes — H13 HEPA air system, Lindner Doppelboden, Plafotherm ceiling, Baufritz timber-frame

Vulnerabilities

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Links

Git

Maintainers

losslesslossless

Keywords

housespecificationbaufritzhepaair-qualitylindnerdoppelbodenplafothermmaintainability

Readme

@maintainable.xyz/house-spec

The open specification for building maximally maintainable, healthy homes.

What This Is

A complete, opinionated building specification for a Baufritz timber-frame house engineered around clean-room-level indoor air quality, laboratory-grade water purity, self-hosted infrastructure, and lifetime maintainability. Every system — air filtration, water treatment, heating, flooring, plumbing, datacenter — is designed so that components can be inspected, serviced, and replaced without destructive intervention.

Specification Documents

| Spec | Scope | |------|-------| | 01 — Air System | H13 HEPA whole-house filtration, MVHR, steam humidification, duct design, pressure management | | 02 — Sensors & Automation | Per-room air quality sensors, KNX/Zigbee architecture, Home Assistant integration, demand-controlled ventilation | | 03 — Baufritz Coordination | Technical room, duct routing, airtightness, radon protection, construction checkpoints | | 04 — Flooring & Ceiling | Lindner NORTEC Doppelboden raised floor, WOODline parquet, Plafotherm AirHybrid radiant ceiling | | 05 — Water System | POE reverse osmosis, 316L stainless steel plumbing, ceiling-routed distribution, leak detection | | 06 — Home Datacenter | Cellar, 4x 42U racks, closed-loop cooling, heat recovery, goods elevator, UPS, structured cabling |

Key Design Principles

  • Whole-house H13 HEPA — 99.95% particle capture at 0.3 um, ISO Class 7-8 equivalent
  • Every air parameter controlled — particulates, CO2, VOCs, humidity, temperature, pressure, radon
  • Heating via ceiling (Plafotherm AirHybrid), not floor — fast response, furniture-independent, integrates MVHR supply air
  • Raised access floor (Lindner NORTEC Doppelboden) — individually liftable 600x600 mm panels for full access to services underneath
  • Dry construction throughout — no wet trades, ideal for Baufritz timber-frame
  • Whole-house POE reverse osmosis — 95-99% TDS removal, remineralized, UV-sterilized, PFAS/microplastic-free
  • 316L stainless steel plumbing — food-grade, zero leaching, press-fit, routed accessibly under suspended ceiling
  • Home datacenter in cellar — 4x 42U racks, 10 kW closed-loop cooling, N+1 redundancy, heat recovery heats the house in winter
  • Goods elevator — 1000 kg capacity, cellar to ground floor, handles fully loaded server racks
  • Positive pressure (+3-5 Pa) — unfiltered air never enters the building envelope

PDF Build

The specs can be compiled into a single styled PDF with rendered Mermaid diagrams:

pnpm install
pnpm build
# Output: dist/house-spec.pdf

Requires Chromium (installed automatically via Puppeteer).

License

All rights reserved. Copyright maintainable.xyz.