Comparison

HVAC ResLoad vs CoolCalc Scan

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

Head to head
About

HVAC ResLoad

Perform ACCA Manual J8 load calculations for residential and small commercial buildings. Generate and email PDF reports for clients and building officials. Includes extensive weather and construction data for detailed analysis.

Highlights
  • ACCA Manual J8 load calculations
  • Field-based cooling and heating load calculations
  • Emailable PDF reports
  • Unlimited projects and templates
  • Global weather data
  • Extensive construction data
  • Room-by-room analysis
Features
Read full description

This app is great for HVAC technicians, contractors, homeowners, HERS and PHIUS raters to easily perform ACCA Manual J8 load calcs. For online help and training videos, go here: http://bit.ly/1PhqlDi The HVAC ResLoad-J app from Carmel is an ACCA-approved Manual J8 residential load calculation app for the Apple iPad. It allows engineers, contractors, and technicians to perform field-based cooling and heating load calculations on residential and small commercial buildings. Users are then able to email PDF reports to customers and local building officials. Reports produced by this app will be acceptable by all municipalities/states (including 30+ US states that have passed laws requiring contractors to submit load calcs from ACCA-approved software.) The HVAC ResLoad-J app allows users to create unlimited projects and perform both block and room-by-room loads. The app includes weather data for 1000s of cities throughout the world and construction data for 100s of wall, floor, roof, ceiling, and window types. The user is also able to model detailed appliance, duct, infiltration, and ventilation loads. The HVAC ResLoad-J app was specifically designed for the Apple iPad, taking advantage of the larger screen, rotating user interface, and other functionality unique to the iPad. This app is similar to our very popular HVAC Residential Load Calcs HD app for the iPad, and it includes many of the same inputs and results. However, the "J" app is ACCA-approved, and thus requires much more detailed analysis of the building. Other features include: 1. Includes a 1000+ world-wide city weather database 2. Allows you to create and store an unlimited number of projects. You can also re-use existing projects as templates for new projects. 3. Includes data for 100s of construction types for walls, roofs, floors, doors, windows, skylights, and ceilings. 4. Allows you to specify an unlimited # of building envelope types (i.e. – doors, walls, roofs, floors, ceilings), window types, and skylight types for each building. 5. Allows you to input individual home appliance information. 6. Allows you to instantly view total heating and cooling load results as you update input data. 7. Allows you to view comprehensive cooling and heating load breakdown reports including breakdown by envelope load, window load, skylight load, infiltration load, ventilation load and internal load contributions. 8. Also performs room-by-room cooling and heating load calc analysis 9. Includes the ability to display a wide variety of on-screen reports including checksum reports (ie – BTUh/SqFt, SqFt/Ton, etc.), complete heating and cooling load breakdown reports, and even graphically-pleasing pie charts showing cooling and heating load breakdowns. These reports can be converted to PDFs and emailed from right within the app. 10. Includes the ability to display a comprehensive HTML report that you can email to yourself or others, and it also includes a spreadsheet attachment that you can open in Excel to create customized reports. 11. Includes the ability to display units in either English (IP) or Metric (SI). 12. As of 2020, includes new project input reports that allow you to print or export to PDF via email. The benefits of using this app are numerous including: 1. Great for use out in the field. Quickly size heating and cooling equipment, show the client, then email the results back to your office for further analysis. 2. Show off your advanced on-screen reports to clients convincing them you are using cutting-edge technology. 3. Save time by inputting information in the field and then returning to your office to perform more in-depth analysis. 4. Submit reports to local municipalities that require ACCA-approved Manual J8 residential load calcs for equipment replacement. Bonus: The HVAC ResLoad-J app now includes our popular HVAC Equipment Locator app built right in! Click here for details about that app: http://bit.ly/1a2RskH

About

CoolCalc Scan

Capture precise 3D room scans using your device's LiDAR sensor. Organize projects, integrate with a web platform for advanced visualization, and export models in industry-standard formats. Ideal for professionals needing accurate spatial data.

Highlights
  • Precise LiDAR scanning
  • Detailed 3D model capture
  • Project organization
  • CoolCalc platform integration
  • Industry-standard export formats
  • Multi-room scanning
Features
Read full description

Free Scanning — Paid Web Features This iOS app is a companion to CoolCalc. Scanning is free. To use your scan results for ACCA Manual J, Manual S, or Manual D calculations, you’ll need a separate paid subscription or single-project purchase in app.coolcalc.com, our web app. KEY FEATURES • Precise LiDAR Scanning Capture detailed 3D models of rooms with accurate measurements. Document walls, ceilings, windows, doors, and room geometry with professional-grade precision. • Project Organization Create projects for different properties or jobs. Scan multiple rooms and keep everything organized in one place. • CoolCalc Platform Integration Connect your scans with the CoolCalc web platform. Upload your models for advanced processing and visualization with interactive 3D viewers. • Professional Export Export your 3D models in industry-standard formats. Share scans with clients, colleagues, or use them in other professional tools. • Multi-Room Scanning Document entire properties efficiently. Scan room by room and combine them into complete building models. IDEAL FOR Perfect for HVAC professionals, contractors, architects, interior designers, and anyone who needs accurate spatial measurements for their work. REQUIREMENTS • iPhone or iPad with LiDAR sensor (iPhone 12 Pro and later, iPad Pro 2020 and later) • iOS 17.5 or later • Account required for platform integration features

Screenshots

CoolCalc Scan3 screens

Verdict

The call

The clearest difference is review sentiment: HVAC ResLoad at 50% against CoolCalc Scan's 0%. HVAC ResLoad also leads on rating (3.4 vs 2.6) and iOS requirement (15.6 vs 17.5). CoolCalc Scan's advantage is price (Free vs $199.99) and update cadence (monthly vs every 4 months). On ratings volume, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

CoolCalc Scan is free to download; HVAC ResLoad costs $199.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

HVAC ResLoad holds the better App Store score, 3.4 against 2.6. Both are backed by a comparable volume of ratings — 8 and 7 respectively. Written reviews point the same way: 50% of HVAC ResLoad's written reviews are positive against 0% of CoolCalc Scan's.

UpkeepUpdate frequency

HVAC ResLoad ships an update every 4 months, CoolCalc Scan monthly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

Scorecard6 real differences · 4 level
HVAC ResLoad versus CoolCalc Scan: the parameters behind the verdict, then further details
ParameterHVAC ResLoadCoolCalc Scan
Price$199.99Free — better
Rating3.4 (8 ratings) — better2.6 (7 ratings)
Positive reviews50.0% of reviews — better0.0% of reviews
Number of ratings8 — better7
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPadiPhone, iPad — better
Requires iOS15.6 — better17.5
Further details — not scored
Size23 MB12 MB
Age rating4+4+
DeveloperCarmel Software CorporationCool Calc Inc.

Customer experience

HVAC ResLoad

All ratings8 ratings
Positive62.5%
Neutral0.0%
Negative37.5%
Written reviews8 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

CoolCalc Scan

All ratings7 ratings
Positive28.6%
Neutral14.3%
Negative57.1%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

HVAC ResLoad

No in-app purchases

None

CoolCalc Scan

No in-app purchases

Questions

Is HVAC ResLoad free?
HVAC ResLoad costs $199.99, with no in-app purchases.
Is CoolCalc Scan free?
CoolCalc Scan is free to download, with no in-app purchases.
Which has better reviews, HVAC ResLoad or CoolCalc Scan?
HVAC ResLoad is rated higher. HVAC ResLoad averages 3.4 out of 5 from 8 ratings, while CoolCalc Scan averages 2.6 from 7 ratings.
Do HVAC ResLoad or CoolCalc Scan have ads?
Neither HVAC ResLoad nor CoolCalc Scan shows ads.
Which is updated more often, HVAC ResLoad or CoolCalc Scan?
HVAC ResLoad ships an update every 4 months, and CoolCalc Scan monthly. Most recently, HVAC ResLoad was updated on October 29, 2026 and CoolCalc Scan on October 25, 2026.

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