Heat Engineer vs AirPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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. • Create rooms using preset or custom names. • Record room dimensions, building materials and construction details. • Select materials from the built-in library or enter custom descriptions and U-values. • Record walls, floors, windows, doors, ceilings and roofs. • Capture complex room shapes and vaulted ceilings using illustrated profiles. • Record existing radiator types and dimensions to support emitter assessment. • Add photographs of rooms and proposed installation locations. • 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. • Scan rooms using supported LiDAR devices. • View captured rooms and layouts. • See room dimensions and radiator locations within your floor plans. • 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. • Record the proposed heat pump manufacturer and model. • Enter the manufacturer’s A-weighted sound power level. • Record the assessment position and add supporting photographs. • Review the assessment result. • Return to an assessment to update equipment details or site information. • 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
AirPro
This tool helps you calculate the right size for air conditioners, heat pumps, and furnaces. It provides detailed analysis of heating and cooling costs, energy consumption, and temperature data. You can also evaluate domestic hot water needs and financial aspects like payback periods.
- BTU estimation for HVAC systems
- Monthly heating and cooling cost calculation
- Energy consumption and temperature analysis
- Domestic hot water needs evaluation
- Financial analysis including payback periods
- Data export to CSV and PDF reports
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Welcome to AirPro, a user-friendly tool for everyone that wants to install an air conditioner, heat pump or any type of furnace. AirPro will assist you in finding the right size of the unit, showing you monthly costs for heating and cooling and domestic hot water, monthly energy consumption, monthly and daily temperatures. Beside the BTU estimation, it allows you to experiment with various base temperatures, heating and cooling temperatures, and smart schedules for system off, providing a custom-tailored approach that suits every individual's needs. You will have all the data for the daily, monthly and annual electricity consumption, energy production, electricity cost, heating degree days, cooling degree days and much more. If you are using a Gas Furnace, you will obtain the analysis for gas burned through the year, gas cost per Therms, kWh, m3, Mcf or Gallons. If you are using an Oil Furnace, you will obtain the analysis for daily (monthly/ annual) usage of oil in Liters (Litre) or Gallons. Also we covered the Wood Furnace, and you will have the results in m3 or Cords. But that's just the tip of the iceberg. AirPro's expansive features present an array of system evaluations, encompassing Heat Pumps, Air Conditioners, Electric Heaters, and Gas, Oil, and Wood furnaces. With this extensive range of options, AirPro ensures you have all the information you need to find the system that aligns best with your circumstances and preferences. Data visualization is made easy and professional with AirPro. It offers high-quality charts for intuitive understanding of your system's performance. Need to share or store this information? No problem. AirPro lets you export your data in a convenient CSV format or create comprehensive PDF reports for any variant. But AirPro isn't just about heating and cooling. It extends its analytical prowess to help you evaluate the domestic hot water needs of various types of premises, whether it's a cozy house, multi-story flats, hospital, hotel, office, or a school. On top of all these features, AirPro brings a powerful financial aspect to the table. It provides detailed financial analysis, giving you a clear picture of daily and monthly thermal energy consumption, financial comparisons, payback periods, and net present value (NPV) calculations. This financial insight empowers you to make informed decisions, not just for the comfort of your space, but also for the health of your wallet. AirPro is more than an app—it's your comprehensive, all-in-one tool for thermal energy analysis. It's designed to be a handy assistant, always ready to provide data-driven insights, ensuring you make well-informed decisions about your heating and cooling systems. Experience the power of smart thermal energy management today with AirPro. If you have any questions or suggestions or you need a technical support, please let us know at support@pvsolcast.com. Terms and Conditions link: https://sites.google.com/view/pvfterms/home Privacy Policy link: https://sites.google.com/view/airpropolicy/home
Screenshots
Verdict
The clearest difference is ads: Heat Engineer at none against AirPro's shown. Heat Engineer also leads on monetization model (free vs free with in-app purchases). AirPro's advantage is update cadence (every 4 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Heat Engineer sells 1 one-off in-app purchase and AirPro sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Heat Engineer ships an update every 2 months, AirPro every 4 days. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.
| Parameter | Heat Engineer | AirPro |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | 78.9% of reviews | — |
| Number of ratings | — | 5 — better |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.4 | 16.0 — better |
| Further details — not scored | ||
| Size | 306 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Heat Engineer Software Ltd | Igor Ilijovski |
Customer experience
Heat Engineer
AirPro
In-app purchases
Heat Engineer
- MCS 020 PDF Report Token$2.99
AirPro
- AirPro Premium - Monthly$7.991 Month
- AirPro Premium - Annual$29.991 Year
Questions
Is Heat Engineer free?
Is AirPro free?
Do Heat Engineer or AirPro have ads?
Which is updated more often, Heat Engineer or AirPro?
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