# AskMarcel: HVAC Diagnostic AI — Boiler & AC error code fixer

> Boiler & AC error code fixer (iPhone/iPad app by MARCELOT thibaut.)

- Source: https://appshunter.io/ios/app/askmarcel-hvac-diagnostic-ai/id6759138547 (this page in markdown: same URL + `.md`)
- Developer: [MARCELOT thibaut](https://appshunter.io/developer/1855350532)
- Category: Productivity, Business
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 53 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, Norwegian Bokmål, Polish, Russian, European Spanish, Turkish
- Released: 2026-03-09
- Data updated: 2026-08-31
- User reviews in markdown: https://appshunter.io/ios/app/askmarcel-hvac-diagnostic-ai/id6759138547/reviews.md

## What is AskMarcel?

HVAC technician. Service tech. Refrigeration engineer. Installer.
Your next breakdown: 47 seconds of diagnosis — not 30 minutes buried in PDFs.
AskMarcel is the AI diagnostic copilot built for HVAC, refrigeration, boiler, and heat pump professionals. Ask your question in plain English, snap a photo of the unit or the fault code, and get a clear, step-by-step diagnosis in real time — right on the job site.
What AskMarcel does for you

Decodes boiler, AC, and heat pump error codes across major brands, instantly
Turns a photo of a rating plate, wiring, or flame into an actionable diagnosis
Walks you through troubleshooting step by step, from symptom to fix
Explains the likely root cause — not just the code
Works in the field, in seconds, even when you're solo on the call

Built for the trade
Whether you service furnaces, split systems, rooftop units, refrigeration, or heat pumps, AskMarcel speaks your language. No more digging through manufacturer PDFs or waiting on a callback from the office. Point, ask, fix.
Who uses it
HVAC and HVACR technicians, service engineers, refrigeration techs, boiler and heating engineers, AC installers, and independent contractors who need answers fast.
Stop losing time on every call. Diagnose smarter with AskMarcel — your HVAC diagnostic AI copilot.

Conditions d'utilisation :
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly Access | $7.99 | per 7 days |
| Yearly Access | $179.99 | per year |
| monthly_askmarcel | $17.99 | per month |



## Version history (last 5 releases)

### 1.1.5 — 2026-08-27

Harness Beta

### 1.1.4 — 2026-08-05

Harness Tree

### 1.1.2 — 2026-07-24

AI-SDK-v5

### 1.1.1 — 2026-07-07

Onboarding Update

### 1.0.3 — 2026-06-01

Amélioration de l'interface et optimisation pour le terrain

## More apps by MARCELOT thibaut

- [Urban-Shaman](https://appshunter.io/ios/app/urban-shaman/id6755662043)

All apps by MARCELOT thibaut: https://appshunter.io/developer/1855350532

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*