Comparison

Heat Engineer vs Fault Finding & Multimeters

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

Fault Finding & Multimeters

Learn to use multimeters and perform electrical safety tests with this comprehensive guide. Covers fault finding procedures, testing various components like pumps, fans, and sensors, and understanding system operation. Ideal for new technicians and experienced engineers.

Highlights
  • Multimeter usage and settings
  • Electrical safety tests
  • Fault isolation procedures
  • Testing pumps, fans, and sensors
  • Understanding sequence of operation
  • 21 detailed chapters
Features
Read full description

We recently re-filmed and updated our hugely successful Fault Finding DVD and now you can get the latest version in high definition on your iPhone and iPad. You can get access to all 21 chapters, totalling 77 minutes, showing you all about multimeters, how to carry out the electrical safety tests in full, how to test stats, fans, sensors and pumps, about diverters valves, expansion vessels, the sequence of operation and more. Suitable for new entrants, those moving from installing to repairs and existing breakdown engineers. Learn at your own pace. The chapters: 1. Testing Equipment 2. Multimeter Settings 3. Electrical Safety Tests 4. Earth Continuity Test 5. Short Circuit Test 6. Resistance to Earth Test 7. Polarity Test 8. Fault Isolation Procedure 9. Sequence of Operation 10. Pumps 11. Testing Switches 12. Water Pressure Switches 13. Flow Switches 14. Air Pressure Switches 15. Fans 16. Stats & Sensors 17. Diverter Valves 18. Domestic Heat Exchangers 19. Expansion Vessels 20. Water Hammer 21. Airing Cupboards

Screenshots

Heat Engineer4 screens
Fault Finding & Multimeters4 screens

Verdict

The call

The clearest difference is review sentiment: Heat Engineer at 79% against Fault Finding & Multimeters's 33%. Heat Engineer also leads on price (Free vs $4.99) and update cadence (every 2 months vs every 4 months). Fault Finding & Multimeters's advantage is in-app purchases (none vs 1) and device support (4 vs 2). On ads 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

Heat Engineer is free to download; Fault Finding & Multimeters costs $4.99 up front. Heat Engineer sells 1 one-off in-app purchase. Fault Finding & Multimeters asks for nothing beyond the download.

UpkeepUpdate frequency

Heat Engineer ships an update every 2 months, Fault Finding & Multimeters every 4 months. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

Scorecard7 real differences Β· 1 level
Heat Engineer versus Fault Finding & Multimeters: the parameters behind the verdict, then further details
ParameterHeat EngineerFault Finding & Multimeters
PriceFree β€” better$4.99
Positive reviews78.9% of reviews β€” better33.3% of reviews
Update frequencyEvery 2 months β€” betterEvery 4 months
AdsNoNo
In-app purchasesYesNo β€” better
MonetizationFree β€” betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod, Apple TV β€” better
Requires iOS16.49.0 β€” better
Further details β€” not scored
Size306 MB37 MB
Age rating4+4+
DeveloperHeat Engineer Software LtdMr Combi Training

Customer experience

Heat Engineer

Written reviews19 reviews
Positive78.9%
Neutral0.0%
Negative21.1%

Fault Finding & Multimeters

Written reviews9 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

1 purchases

Heat Engineer

One-time1
  • MCS 020 PDF Report Token$2.99
None

Fault Finding & Multimeters

No in-app purchases

Questions

Is Heat Engineer free?
Heat Engineer is free to download, with in-app purchases available.
Is Fault Finding & Multimeters free?
Fault Finding & Multimeters costs $4.99, with no in-app purchases.
Do Heat Engineer or Fault Finding & Multimeters have ads?
Neither Heat Engineer nor Fault Finding & Multimeters shows ads.
Which is updated more often, Heat Engineer or Fault Finding & Multimeters?
Heat Engineer ships an update every 2 months, and Fault Finding & Multimeters every 4 months. Most recently, Heat Engineer was updated on October 18, 2026 and Fault Finding & Multimeters on October 24, 2026.

Other comparisons