# iHeatLoss

> Estimates room and building heat output for plumbing and heating professionals. (iPhone/iPad app by Navtech Software.)

- Source: https://appshunter.io/ios/app/iheatloss/id680564773 (this page in markdown: same URL + `.md`)
- Developer: [Navtech Software](https://appshunter.io/developer/355517263)
- Category: Utilities
- Price: $5.99
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 9 MB
- Languages: American English
- Released: 2013-07-31
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/iheatloss/id680564773/reviews.md

## What is iHeatLoss?

Heatloss helps plumbers, heating engineers, and installers estimate the heat output required for each room in a building.

Calculate fabric and ventilation heat loss using room dimensions, component areas, U-values, internal temperatures, external temperatures, and air-change rates. Each room’s result is shown in both Watts and BTU, helping you choose a radiator with an appropriate heat output.

The app keeps track of every room in the project and provides a running total for the whole building, giving a clear estimate of the overall heat output required from the heating system or boiler.

Features
• Calculate room-by-room heat loss
• Include fabric and ventilation losses
• Track multiple rooms in one building
• View totals in Watts and BTU
• Use room temperature and air-change reference data
• Estimate the total heating output required for the property

## Key features

- Room-by-room heat loss calculation
- Fabric and ventilation loss inclusion
- Multiple room tracking
- Watts and BTU output display
- Reference data for temperature and air change
- Total heating output estimation

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/iheatloss/id680564773/reviews.md

### 1/5 — Lame.

*2024-01-19*

Only metric and rooms only go up to 30 cubic meters. I want my $5 back.

## Frequently asked questions about iHeatLoss

### What is iHeatLoss used for?

iHeatLoss is a utility app designed to help plumbers and heating engineers calculate the required heat output for individual rooms and entire buildings. It aids in selecting appropriate radiators and boilers by providing estimates in both Watts and BTU.

### What information is needed to use iHeatLoss?

To use iHeatLoss, you will need room dimensions, component areas, U-values, internal and external temperatures, and air-change rates. The app uses this data to calculate fabric and ventilation heat loss.

### Does iHeatLoss support multiple rooms?

Yes, iHeatLoss allows you to track multiple rooms within a single project. It provides a running total for the entire building, giving a comprehensive estimate of the overall heat output required.

### What units does iHeatLoss display results in?

iHeatLoss displays the calculated heat loss for each room in both Watts and BTU. This dual unit display helps users easily match the required heat output to available radiator and boiler specifications.

### How often is iHeatLoss updated?

The latest version of iHeatLoss is 3.0, and it was last updated on May 12, 2026. This indicates a recent update, suggesting the app is actively maintained.

### What devices is iHeatLoss compatible with?

iHeatLoss is compatible with iPhone, iPad, and iPod devices. It is suitable for users who need to perform heat loss calculations on the go.

### What is the price of iHeatLoss?

iHeatLoss is a paid application, priced at $5.99. This one-time purchase grants access to its heat loss calculation features.

### Does iHeatLoss have ads?

No, iHeatLoss does not contain advertisements. As a paid application, it offers an ad-free experience for its users.

## Version history (last 5 releases)

### 3.0 — 2026-05-12

Improved performance and updated user interface

### 2.5 — 2025-06-22

Updates and minor bug fixes

### 2.3 — 2024-06-06

Updated for current iOS version

### 2.2 — 2021-03-21

Updated for iOS14

### 2.0 — 2018-10-03

Updated for iOS12

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## More apps by Navtech Software

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All apps by Navtech Software: https://appshunter.io/developer/355517263

## Related topics

[heat loss](https://appshunter.io/ios/topics/heat-loss)

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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 2026-08-25.*