Registry Online
Protocol v1.0
Canadian Patent Pending
AHR™ · HMIN™ · HEIN™
Asset History Report · AHR™

Every home gets a file.

The Asset History Report is the permanent service, installation, and lifecycle record for the mechanical and energy systems in your home. When you sell, the record goes with the home — not with you.

Join the Homeowner Waitlist → See how it works →
harmelo — asset history report · sample
Live
HMIN™
HMIN-001-FRN-LN2019-44017
High-efficiency furnace · 2,400 sq ft single-family home
Installed
Oct 2019
Service events
7 logged
ICI™ score
88 / 100
2019Installed — 96% AFUE high-efficiency furnaceLicensed HVACVerified
2020Annual tune-up · filter · combustion analysisLicensed HVACVerified
2022Inducer motor replaced under warrantyLicensed HVACWarranty
2023Thermostat upgrade · zoning addedLicensed HVACVerified
2024Annual tune-up · heat-exchanger scopedLicensed HVACVerified
NOWHome listed — AHR attached to MLS packetOwner · AgentLive
// 01 — Why AHR

Your furnace has a longer memory than your records do.

Every receipt, every warranty card, every service tag your contractor left on the unit — most of that is gone within five years. The AHR fixes that, once and for life.

// 01
Get paid for the work you put in.
A new furnace, a heat-pump upgrade, a solar array — these are tens of thousands of dollars of capital invested in your home. Without a verifiable record, buyers and appraisers heavily discount that value. AHR turns your spending into provable value.
// 02
Warranties actually hold up.
Most mechanical warranties require proof of maintenance. When service history is locked to the HMIN™ of the system, warranty claims become straightforward — even years later, even under a new owner.
// 03
Buyers see what's been done.
No more "when was the roof last serviced?" guesswork on a home inspection. The AHR attaches to your listing and travels with the property. Buyers make informed offers. Sellers defend their price.
// 02 — What's In The File

Every major system. One permanent record.

Each system in your home that gets registered receives its own HMIN™ or HEIN™ — a permanent identifier. Service events, upgrades, replacements, and warranty actions all attach to that identifier for life.

◈
// Heating
Furnaces, Boilers & Heat Pumps
◊
// Cooling
A/C, Chillers & Mini-Splits
≡
// Water
Water Heaters & Softeners
◉
// Energy
Solar, Battery & EV Chargers
◆
// Ventilation
HRV, ERV & Air Handlers
▣
// Safety
Backflow, Sump & Fire
◇
// Envelope
Roofing, Windows & Insulation
◎
// Electrical
Panels, Sub-Panels & Generators
// 03 — How It Works

Four steps. One permanent file.

You don't have to be technical. A licensed contractor handles registration during any install or service visit. From that moment on, the file maintains itself.

01
Register
A licensed contractor assigns an HMIN™ or HEIN™ to each system in your home during install or service.
02
Log
Every service visit, tune-up, warranty action, and upgrade appends to the record — authenticated by the trade performing the work.
03
Maintain
The record compounds. ICI™ scores trend over time. Replacement forecasts surface. Warranty coverage stays provable.
04
Transfer
When you sell, the AHR attaches to the listing and transfers to the new owner. The record lives with the home — permanently.
// 04 — The Sell Moment

When you list the home, the file is the proof.

Buyers walking through a home today have no way to know if the furnace was serviced last year or never. The AHR changes that. It attaches to the MLS packet, to the inspection report, to the lender package. Comparable homes without an AHR start to look like missing documentation — because that's what they are.

For sellers, the AHR isn't just a nice-to-have. It's the difference between defending your asking price with verified data and accepting a discount because "nobody can tell when the roof was last serviced."

// 05 — Common Questions

The basics, answered.

Is this a service history report for houses?+
Yes — AHR is purpose-built for the mechanical and energy systems in buildings. It's a persistent record that travels with the asset instead of the owner. It's powered by the HMIN™ and HEIN™ identity protocols, appended to by licensed contractors, and designed to work across ownership changes, service changes, and software changes. The registry itself is neutral, non-commercial infrastructure.
Do I add records myself?+
No. Records are added by the licensed trade performing the work — that's what keeps the file authenticated. Homeowners see the complete record for their home, can share it with agents or buyers, and can grant access to new service providers — but the integrity of each entry comes from the trade that signed it.
What if my contractor isn't on Harmelo yet?+
Join the waitlist below. As contractor density grows in your region, we'll notify you when a licensed trade in your area is enrolled and able to register your systems. Contractors can enroll directly through the contractor portal.
Does the AHR transfer when I sell?+
Yes — that's the whole point. The record is attached to the physical systems in the home via HMIN™ and HEIN™ identifiers, not to the homeowner. When the property changes hands, the AHR goes with it.
How much does it cost homeowners?+
Homeowner pricing and access tiers are being finalized ahead of the public release. Founding waitlist members will be notified first with pricing details and early-access terms.
Is my data private?+
The record is yours as the homeowner. You control who sees it — agents, buyers, inspectors, lenders, or new service providers. The underlying registry is neutral infrastructure, not a marketing database.
Homeowner Waitlist

Be first when AHR opens in your region.

AHR is rolling out regionally as contractor density grows. Join the waitlist and we'll notify you when a licensed trade in your area can register your systems — with founding-member pricing for early homeowners.

Join the Waitlist  →
Response within 48 hours  ·  support@harmelo.com