# RightSize HVAC — Residential Load Calculator

> Residential Load Calculator (iPhone/iPad app by Ethan Hunt.)

- Source: https://appshunter.io/ios/app/rightsize-hvac/id6761776259 (this page in markdown: same URL + `.md`)
- Developer: [Ethan Hunt](https://appshunter.io/developer/1891419768)
- Category: Utilities, Business
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 12 MB
- Languages: American English
- Released: 2026-08-23
- Data updated: 2026-10-03
- User reviews in markdown: https://appshunter.io/ios/app/rightsize-hvac/id6761776259/reviews.md

## What is RightSize HVAC?

Done fast. Done right.

Load calculations shouldn't slow down your sales cycle or leave your team guessing. RightSize HVAC turns a traced floor plan into accurate equipment sizing in minutes, so you can quote faster, win more jobs, and hand clients a report you can stand behind.

Built for contractors.

TRACE IT
Sketch the floor plan, extrude it, and let the geometry do the work. A full 3D building envelope, right on your iPad or iPhone.

ASSIGN IT
Fast construction assignment for walls, ceilings, floors, windows, and doors. No spreadsheets. No guessing.

CALCULATE IT
Transparent CSA F280-12 heating and cooling load calculations, room by room and whole-house. Your judgement, accelerated.

REPORT IT
Field-ready, defensible load reports, branded for your business and ready to hand to the client.

RightSize HVAC requires an active subscription to create and calculate load reports. A subscription unlocks all calculation, project, and reporting features. One plan. Everything included. All features, all updates, no tiers. Manage or cancel anytime.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Terms of Service: https://www.rightsizehvac.com/terms-of-service
Privacy Policy: https://www.rightsizehvac.com/privacy-policy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| RightSize HVAC | $50.00 | per month |



## Version history (last 3 releases)

### 2.1 — 2026-09-24

More modelling flexibility to capture what's on site and improve accuracy
- Attachment: specify whether the home is detached or semi-detached
- Exposure: more exposure options sourced directly from CSA F280-12
- Blower door: Enter blower door results instead of air tightness presets. Presets remain for when no blower door data is available.
- Flues: Enter total flue area to account for flues.
- Interior shading: Apply blinds or reflective blinds to windows.

### 2.0 — 2026-08-30

LiDAR room scanning: on iPhone Pro and iPad Pro, scan a room to instantly generate an editable floor plan: walls, ceiling heights, windows, and doors. Fine-tune with rotate, move, and flip. 

Plus: control how ventilation is distributed across rooms in the room-by-room breakdown.

### 1.0 — 2026-08-23

No release notes.

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## Related topics

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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 2026-10-03.*