Every service company keeps its own notes in its own format — a different checklist at every shop, nothing that follows the equipment when the next company shows up. So the system's real history scatters across trucks, binders, and software that gets replaced. Harmelo gives every system one standardized, signed service record that stays with it for life — the same checklist, the same facts, every visit, no matter who does the work. Owners, operators, and governments finally see what's actually happening, and the trades get the credit for the work they've done and a head start on what's failing next.
A city sees its public infrastructure. A portfolio operator sees its buildings. A contractor sees their work. Every view is the same registry — one standardized record, permissioned to the stakeholder who needs it. The tech below isn't the product. The registry underneath it is.
In 2008, a chiller was installed at a 400-unit apartment building in Brooklyn. Today it's on its fourth owner, sixth contractor, and third control system. Ask the super what broke last winter and he'll tell you. Ask what's going to break next winter and nobody can.
Every building has this story. The records existed — they just lived in binders, in legacy software, in the memories of people who no longer work there. Every ownership change, every contractor rotation, every platform migration scattered them. What little continuity survived was fragmented, unstandardized, and unverifiable.
CRMs track relationships. CMMS track work orders. Both are owner-centric — they reset the moment the owner changes. A registry is asset-centric. The record belongs to the mechanical or energy system itself. It survives every transition. Every entry is standardized. And across millions of systems, the data compounds into intelligence no siloed tool can produce.
One record. Many views. Continuous history. Neutral ground. That's what ends the story above.
Every registry needs a unit of identity. HMIN™ and HEIN™ are the primitives that make every mechanical and energy system on earth uniquely addressable — so service data written by one contractor reads the same as service data written by any other, across any building, any jurisdiction, any owner. Standardization is what turns raw entries into compounding intelligence.
Permanent identity for HVAC, mechanical, plumbing, and building systems. Assigned at registration. Every service event — by every licensed trade, across every ownership change — writes back to the same record, in the same format, for the life of the asset.
Permanent identity for energy infrastructure — solar arrays, battery storage, meters, generation assets, and distribution systems. Durable across ownership changes, operator transitions, and regulatory reporting cycles.
A neutral Infrastructure Identity Intelligence Registry™ — IIIR — sits above every operator, every contractor, every platform. Each stakeholder gets their own permissioned view of the same standardized record. No silos. No resets at transitions. No one side owns the data — every side gets the intelligence.
Last three service visits. Isolation points. Compliance status. Shutoff location for first responders. All before he opens his laptop. Now multiply that by every regulated system across the jurisdiction — boilers, chillers, backflow preventers, fire suppression, EV chargers, energy assets. Cross-department compliance becomes visible. Climate and emissions reporting becomes auditable. Public-housing accountability becomes real. Capital planning across the public portfolio stops being guesswork grounded in inspection-cycle snapshots, and starts being grounded in continuous lifecycle data.
Which systems are aging. Which contractors actually perform. Which manufacturers deliver. Capital forecasting across the portfolio grounded in standardized, continuous data — not spreadsheet theater. Disclosure packages assemble in minutes instead of weeks. Transactions move faster because what you own is already documented. Explore Harmelo for portfolios →
Every HVAC unit, chiller, generator, and energy system keeping the venue running carries a signed, timestamped service history in the registry. Emissions calculations pull from verified operating data, not estimates. Safety and compliance claims reference the specific inspection entry that backs them. When sponsors, regulators, or auditors ask for proof, the answer is a record — not a narrative.
The day a home is built is the most accurate moment in its life. Everything after is reconstruction. Builders set the standard by bringing their trades into the registry on their developments — HVAC, electrical, plumbing, solar — at no cost to those trades for the work they do for the builder. Every install, permit, warranty registration, and pre-occupancy service signs into the home's record at the moment it happens. At closing, the buyer takes possession of an Asset History Report co-branded with the builder's mark — verified by the technicians who built the home. Explore Harmelo for builders →
The on-call tech's phone lights up. Before he's in his truck, he already knows the unit's full service history, which valve to isolate, and the access path. Every signed entry he adds builds a verified record that follows him across customers, ownership changes, and jobs. Unpredictable breakdowns turn into planned work. Reputation compounds. Warranties stay valid. Explore Harmelo for contractors →
HVAC, water heater, solar, every furnace service — the file lives with the asset, not the owner. Buyers see what's been done. Condition, service history, warranty status, remaining life. The work the seller invested shows up in what the buyer is willing to pay. And day to day, decisions stop being guesswork. See how the Asset History Report works →
Property risk has always been priced on roofs and locations. The registry turns mechanical and energy systems into structured, verifiable data. Claims resolve against signed records. Collateral evaluates against actual condition. Portfolio-level mechanical risk becomes visible for the first time — the first underwriting-grade dataset for an asset class that's always been opaque.
Standardized service records reveal how units are failing, why, and where — drawn from what the trades actually write, not telemetry. No sensor, no firmware, no connection to the unit, so warranties stay intact. The brand is protected because problems surface as patterns instead of recalls, and suppliers can stock ahead of a shortage instead of scrambling after one. For the first time, a manufacturer can see the real-world life of its equipment without touching a single machine.
It starts with the standardized, signed record every technician writes. That's the spine. Everything below is intelligence the records unlock — visibility across millions of systems, surfaced to the stakeholder who needs it, in the format they need to act. A CRM can't produce these outputs. A CMMS can't. Only a registry built on trustworthy records can.
The neutral, permanent registry that sits above every owner, operator, contractor, and platform. Append-only. Standardized. Portable. Independent. The substrate every other output compounds on.
The full continuous record for any registered system — install, every service event, upgrades, warranty, condition, remaining life. Travels with the asset across every ownership change. Learn more →
Pattern recognition across the registry — which equipment actually performs, which service patterns extend life, which manufacturers deliver. Trend-based forecasting grounded in continuous, standardized data.
Replacement forecasting. Multi-year capital planning. Reserve-fund rails. Budget predictability for owners and institutions managing infrastructure at scale — grounded in the registry, not in spreadsheets.
Transaction-ready, underwriting-grade disclosure assembled directly from the registry. Sale, refinance, insurance renewal, operator transition — the document is already there, verified, and defensible.
Authenticated, signed entries from every licensed trade. Warranty status stays valid across ownership changes. Contractor reputation stays portable. The layer that makes every registry entry defensible.
Cities and municipalities, housing portfolios and REITs, stadiums and venues, the home builders shipping new construction, the manufacturers who build the equipment, the contractors keeping all of it running, the homeowners who ultimately carry the cost, and the insurers and lenders pricing the risk. Eight stakeholders. One registry. No one side owns the data — every side gets the intelligence.
The Asset History Report is how the registry surfaces in the real world. For every enrolled asset — a furnace, a chiller, a generator — the AHR is the verified, portable record of what's installed, what's been serviced, and what's coming next. It travels with the asset across owners, contractors, and decades.
AHR is a live Harmelo product, available now at assethistoryreport.com. The other registry modules — IIIR, IDR, ICI, IFI, POI, and WarrantyTech — follow the same pattern: built on the persistent identity layer, surfaced through purpose-built interfaces.