Comparison

Heat Engineer vs AC Commission Pro

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Heat Engineer

This app assists heating engineers and surveyors in collecting property data for heating system installations. It supports heat loss reports for various technologies and includes tools for sound assessments and quick estimations. Data is automatically saved for later review and amendment.

Highlights
  • Heat loss survey for BS EN 12831, CIBSE, and MCS standards
  • MCS 020 sound assessment for Air Source Heat Pumps
  • Quick heat loss estimator tool
  • Automatic data saving and history for amendments
  • Room-by-room heat loss calculation
  • Photo capture for rooms and installation locations
  • Fuel comparisons and running cost calculations
Features
Read full description

Heat Engineer Software helps heating engineers and surveyors capture property information on site, carry out heat loss surveys and assess air source heat pump sound levels. From a quick estimate to a detailed room-by-room survey (3D LiDAR scanning), gather the information you need for heat pump and conventional heating system design. Work from your iPhone or iPad, then continue with your project in the Heat Engineer desktop platform. ROOM-BY-ROOM HEAT LOSS SURVEYS Capture the property details needed for heat loss calculations designed to follow BS EN 12831-1:2017, the CIBSE Domestic Heating Design Guide and relevant MCS requirements. β€’ Create rooms using preset or custom names. β€’ Record room dimensions, building materials and construction details. β€’ Select materials from the built-in library or enter custom descriptions and U-values. β€’ Record walls, floors, windows, doors, ceilings and roofs. β€’ Capture complex room shapes and vaulted ceilings using illustrated profiles. β€’ Record existing radiator types and dimensions to support emitter assessment. β€’ Add photographs of rooms and proposed installation locations. β€’ Continue your survey in the desktop platform to review calculations and produce detailed reports. CHOOSE HOW YOU MEASURE Use a tape measure or laser measure and enter your measurements, or use built-in LiDAR scanning on a compatible iPhone or iPad to capture room dimensions and layouts. Choose the survey method that suits the property and the equipment you have available. LiDAR scanning requires a compatible device with a LiDAR sensor. FLOOR PLANS AND LIDAR SCANNING Bring your survey to life with a visual layout of the property. β€’ Scan rooms using supported LiDAR devices. β€’ View captured rooms and layouts. β€’ See room dimensions and radiator locations within your floor plans. β€’ Export 2D floor plans to PDF for use alongside your project documentation. WHOLE-HOUSE HEAT LOSS AND QUICK ESTIMATES Assess a property before progressing to a detailed room-by-room survey. Use whole-house heat loss and quick estimation tools to support early discussions, initial project assessments and quotation preparation. Preliminary estimates help you get started. Complete a detailed room-by-room calculation to support final heating system and emitter design. AIR SOURCE HEAT PUMP SOUND ASSESSMENTS Carry out sound assessments to support assessment of the noise requirements associated with permitted development. β€’ Record the proposed heat pump manufacturer and model. β€’ Enter the manufacturer’s A-weighted sound power level. β€’ Record the assessment position and add supporting photographs. β€’ Review the assessment result. β€’ Return to an assessment to update equipment details or site information. β€’ Produce a PDF assessment report for your project records. A sound assessment addresses noise criteria; other planning requirements may also apply. CONNECTED FROM SITE TO DESKTOP Keep your mobile survey and desktop project connected with the updated Heat Engineer platform. Save your work, revisit surveys and assessments, and continue adding information as the project develops. Capture details on site, then use the desktop platform for further design work and reporting. GET STARTED A Heat Engineer account is required. Visit our website to create an account, explore the platform and watch our training videos

About

AC Commission Pro

Features
Read full description

AC Commission Pro β€” Certificates for AC & Refrigeration Engineers Create professional, F-Gas compliant commissioning and service certificates on site in minutes β€” for air conditioning, refrigeration and freezer systems. Built by an engineer, for engineers who want to finish the paperwork before they leave site. Now covers refrigeration & freezer work Not just AC. Commission and service cold rooms, freezers, walk-ins, display cabinets, condensing units and pack systems β€” with defrost settings, controller setpoints and operating temperatures. Choose from 23 refrigerants, each tagged with its ASHRAE Standard 34 safety group (A1, A2L, A3, B2L) and GWP for accurate F-Gas reporting. Everything you need on site β€’ Commissioning & Service Certificates β€” pressure test, vacuum test, electrical readings, on-site times and digital signatures. Professional PDF generated instantly. β€’ Job Sheets β€” record work, parts, photos, mileage and times; share a branded PDF by email, Messages, AirPrint or Files. β€’ OCR Data Plate Scanner β€” point the camera at a data plate and the model and serial are read automatically. No typing, no mistakes. β€’ QR Asset Labels β€” stick a QR label on the unit; scan it any time to pull up that unit's full service history. β€’ Per-system history β€” every unit's installs, services and job sheets in one place, VRF-aware so multi-outdoor systems group correctly. β€’ Refrigerant van stock β€” track cylinders, log usage and recovery, and generate F-Gas audit reports. β€’ Company branding β€” your logo, company details and accreditation numbers on every certificate. Your data is safe β€’ Works offline β€” no signal needed on site. β€’ One-tap iCloud backup and restore β€” switch phones and get everything back in seconds. β€’ Your records stay on your device and in your iCloud. Nothing is shared without you. Made for the field Fast, clean and simple β€” designed for iPhone and iPad, so you can fill in a certificate one-handed on a rooftop or review it on a bigger screen back in the van. Download and start your free trial today. Spend less time on paperwork and more time on the tools. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ac-commission-pro.co.uk/privacy.html

Screenshots

Heat Engineer4 screens
AC Commission Pro4 screens

Verdict

The call

The clearest difference is update cadence: AC Commission Pro at weekly against Heat Engineer's every 2 months. Heat Engineer's advantage is iOS requirement (16.4 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Heat Engineer sells 1 one-off in-app purchase and AC Commission Pro sells 10 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Heat Engineer ships an update every 2 months, AC Commission Pro weekly. The most recent releases landed on October 18, 2026 and October 3, 2026 respectively.

Scorecard2 real differences Β· 6 level
Heat Engineer versus AC Commission Pro: the parameters behind the verdict, then further details
ParameterHeat EngineerAC Commission Pro
PriceFreeFree
Positive reviews78.9% of reviewsβ€”
Update frequencyEvery 2 monthsWeekly β€” better
AdsNoNo
In-app purchasesYesYes
MonetizationFreeβ€”
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 β€” better18.5
Further details β€” not scored
Size306 MB29 MB
Age rating4+4+
DeveloperHeat Engineer Software LtdSIMON TONY PASLEY

In-app purchases

1 purchases

Heat Engineer

One-time1
  • MCS 020 PDF Report Token$2.99
10 purchases

AC Commission Pro

Subscriptions6
  • Pro Monthly$7.991 Month
  • Solo$79.991 Year
  • Pro Yearly$79.991 Year
Show 3 more
  • Small Team$499.001 Year
  • Team$799.001 Year
  • Business$999.991 Year
One-time4
  • 100 AI Tokens$9.99
  • 500 AI Tokens$29.99
  • 2000 AI Tokens (Best Value)$79.99
Show 1 more
  • 5000 AI Tokens$149.99

Questions

Is Heat Engineer free?
Heat Engineer is free to download, with in-app purchases available.
Is AC Commission Pro free?
AC Commission Pro is free to download, with in-app purchases available.
Do Heat Engineer or AC Commission Pro have ads?
Neither Heat Engineer nor AC Commission Pro shows ads.
Which is updated more often, Heat Engineer or AC Commission Pro?
Heat Engineer ships an update every 2 months, and AC Commission Pro weekly. Most recently, Heat Engineer was updated on October 18, 2026 and AC Commission Pro on October 3, 2026.

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