Comparison

HVAC Quick Load vs ASHRAE 365

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

Head to head
About

HVAC Quick Load

This app provides quick, rule-of-thumb HVAC load calculations for various building types. It estimates heating and cooling loads, as well as air flows, based on building type, area, and occupancy. Results can be emailed with an Excel spreadsheet attachment for further analysis.

Highlights
  • Rule-of-thumb HVAC load calculations
  • Supports commercial, industrial, and residential buildings
  • Estimates cooling/heating loads and air flows
  • Email results with Excel spreadsheet attachment
  • IP and SI unit support
  • HVAC Equipment Locator included
Features
Read full description

The HVAC Quick Load is the one and only rule-of-thumb HVAC heating and cooling load application for the iPhone and iPad. This app performs rule-of-thumb HVAC cooling and heating load calculations for many types of commercial, industrial, institutional, and residential buildings. It allows you to quickly calculate the total required cooling and heating loads (in BTU/hr or Tonnage) and air flows (CFM or L/s) by inputting just the building type, total square area and number of people. You can email all of the inputs and results to any email address. In addition, the email includes an Excel spreadsheet attachment from which you can perform more extensive calculations. The basis of the calculations for this utility come from various authoritative HVAC texts that list average cooling and heating load values per square foot for many building types. All values can be displayed in English (IP) and Metric (SI) units. The following is a sample of some of the types of buildings that can be modeled: 1. Cocktail Lounges, Bars, Taverns, Clubhouses 2. Computer Rooms 3. Dining Halls, Lunch Rooms, Cafeterias, Luncheonettes 4. Hospital Patient Rooms, Nursing Home Patient Rooms 5. Jails 6. Kitchens 7. Libraries, Museums 8. Malls, Shopping Centers 9. Medical/Dental Centers, Clinics, and Offices 10. Nightclubs 11. Offices, Commercial 12. ..... and many more This app is great for use out in the field to quickly analyze the cooling and heating properties of a building. However, please note, that it is by no means a substitute for rigorous heating and cooling load calculations, and HVAC equipment and materials should not be selected based upon the results from this application. We also offer the following additional HVAC applications for the iPhone and iPad: 1. HVAC Duct Sizer 2. HVAC Pipe Sizer – Gas Low Pressure 3. HVAC Pipe Sizer - Gas High Pressure 4. HVAC Pipe Sizer – Liquid 5. HVAC Pipe Sizer – Steam 6. Steam Tables 7. Psychrometric Plus 8. Psychrometric LT 9. HVAC Pipe Sizer Plus 10. HVAC Pipe Sizer Gas Plus 11. HVAC Toolkit 12. HVAC Toolkit Ultimate 13. HVAC Residential Load Calcs 14. HVAC Load Plus 15. HVAC Equipment Locator 16. ASHRAE Duct Fitting Database 17. ASHRAE 62.1 Ventilation Load Calcs 18. HVAC Psych HD 19. HVAC ResLoad-J 20. HVAC Residential Load Calcs HD

About

ASHRAE 365

Access ASHRAE information year-round. Stay updated on global conferences and events, connect with the community via social media, and discover resources to support the Society.

Highlights
  • Conference and event updates
  • Social media integration
  • Resource discovery
  • Society support information
  • Year-round access
Features
Read full description

ASHRAE 365 is your year-round app for ASHRAE information. Stay up-to-date on upcoming worldwide conferences and events, connect with others through social media, find resources, and learn how to support the Society.

Screenshots

HVAC Quick Load4 screens
ASHRAE 3653 screens

Verdict

The call

The clearest difference is review sentiment: HVAC Quick Load at 45% against ASHRAE 365's 0%. ASHRAE 365's advantage is price (Free vs $6.99) and rating (4.2 vs 3.3). On ads, 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

CostPrice · In-app purchases · Ads · Monetization

ASHRAE 365 is free to download; HVAC Quick Load costs $6.99 up front. HVAC Quick Load sells 1 one-off in-app purchase. ASHRAE 365 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ASHRAE 365 holds the better App Store score, 4.2 against 3.3. Both are backed by a comparable volume of ratings — 3 and 10 respectively. Written reviews complicate that: 45% of HVAC Quick Load's written reviews are positive against 0% of ASHRAE 365's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

HVAC Quick Load ships an update every 9 months, ASHRAE 365 every 4 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
HVAC Quick Load versus ASHRAE 365: the parameters behind the verdict, then further details
ParameterHVAC Quick LoadASHRAE 365
Price$6.99Free — better
Rating3.3 (3 ratings)4.2 (10 ratings) — better
Positive reviews45.5% of reviews — better0.0% of reviews
Number of ratings310 — better
Update frequencyEvery 9 monthsEvery 4 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidAd-supported — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size1 MB53 MB
Age rating4+4+
DeveloperCarmel Software CorporationASHRAE, Inc.

Customer experience

HVAC Quick Load

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews11 reviews
Positive45.5%
Neutral0.0%
Negative54.5%

ASHRAE 365

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

HVAC Quick Load

One-time1
  • HVAC Equipment Locator$9.99
None

ASHRAE 365

No in-app purchases

Questions

Is HVAC Quick Load free?
HVAC Quick Load costs $6.99, and also offers in-app purchases.
Is ASHRAE 365 free?
ASHRAE 365 is free to download, with no in-app purchases.
Which has better reviews, HVAC Quick Load or ASHRAE 365?
ASHRAE 365 is rated higher. HVAC Quick Load averages 3.3 out of 5 from 3 ratings, while ASHRAE 365 averages 4.2 from 10 ratings.
Do HVAC Quick Load or ASHRAE 365 have ads?
Neither HVAC Quick Load nor ASHRAE 365 shows ads.
Which is updated more often, HVAC Quick Load or ASHRAE 365?
HVAC Quick Load ships an update every 9 months, and ASHRAE 365 every 4 months. Most recently, HVAC Quick Load was updated on October 23, 2026 and ASHRAE 365 on October 24, 2026.

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