Comparison

Installer App vs HVAC Formulas Tech Calculator

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

Head to head
About

Installer App

This app provides HVAC professionals with a digital toolbox for everyday tasks. It offers product information, installation guides, and advanced features to streamline work, including project management and hydronic balancing tools.

Highlights
  • Radiator Presetting
  • Product Finder
  • My Projects (Cloud-based)
  • Hydronic Balancing
  • Flow/Pressure Calculator
  • Floor Heating Tools
  • Burner Converter
  • Magnetic Tool
Features
Read full description

The Danfoss Installer app is an all-in-one digital toolbox that helps plumbers, heating and HVAC professionals, service technicians, engineers, and installers with your everyday tasks. For projects big and small, our comprehensive toolbox equips you with the latest product information, installation guides and advanced features to streamline your work, making your daily tasks easier. Simplify project management with customizable databases to track your work and pick up where you left off, anytime you need. The Danfoss Installer app offers a collection of useful tools and features: Radiator Presetting Set proper values based on valve, sensor, and radiator type, or alternatively by room size and heat loss. Get the heat emission, flow, and presetting right every time. Product Finder Search and access comprehensive product information, documentation, and details. Download Danfoss product documentation directly in the app. My Projects Make project management easier by creating a list of your clients and jobs, saving contact and building information, calculating system properties, and presetting for radiator and underfloor heating. Cloud-based, My Projects allows you to save everything in one spot for easy overview and fast access across all your devices. Hydronic Balancing Determine accurate system heat output with precise flow calculations. Tailor settings to valve type, handle position, and measured pressure. Flow/Pressure calculator Calculate, convert, or verify pressure, flow, power, and temperature (values or units). Floor heating Specify circuit lengths and calculate presetting for your floor heating manifolds. Select floor heating pipe type and dimensions, define heat loss, and divide rooms into circuits. Burner Converter Modify burner components and find spare parts in a matter of seconds, while keeping an overview of product updates and alternatives. Magnetic Tool Test solenoid valve coils quickly and easily. If the wheel rotates, your valve is good to go. Timer Replacement Select the appropriate timer replacement for a Danfoss or third-party unit. Installation guides are available as well. Feedback Your input matters, and we're committed to continuously improving Installer App to meet your needs. If you encounter a bug or have a feature suggestion, please use the in-app feedback function available in Settings. Alternatively, you can reach us via email at coolapp@danfoss.com. Danfoss Climate Solutions At Danfoss Climate Solutions, we engineer energy-efficient solutions to help the world get more out of less. Our innovative products and solutions enable a decarbonized, digital, and more sustainable tomorrow, and our technology supports a cost-efficient transition to renewable energy sources. With a strong foundation in quality, people, and the climate, we drive the energy, refrigerant, and food system transitions needed to achieve climate goals. Read more about us at www.danfoss.com. Terms and Conditions apply for use of the app.

About

HVAC Formulas Tech Calculator

This app provides a comprehensive collection of HVAC formulas for technicians. It simplifies complex calculations for heating, ventilation, and air conditioning systems, saving time and effort compared to manual methods or general calculators. Designed by an industry professional, it offers an easy-to-use interface for quick access to essential formulas.

Highlights
  • Comprehensive HVAC formula collection
  • Formulas for air, fan laws, and heat
  • Simplified calculations for technicians
  • Easy-to-use interface
  • Designed by an HVAC technician
  • Saves time searching the web
Features
Read full description

HVAC stands for heating, ventilation and air conditioning systems. This system is responsible for heating and cooling and includes products like furnaces, air conditioners, heat pumps as well as ductwork, and thermostats. The most complete reference for HVAC technicians. Our goal is to provide every formula that a technician would use in the field. From air formulas to fan laws we try our best to include every HVAC formula. If it is not present in our app now, we have plans to have it. Find the most commonly used and not so commonly used HVAC formulas here. Some of our current HVAC formulas: -Mixed Air Formula -Latent Heat -Sensible Heat -Enthalpy -Both Fan Laws Save time searching the web. Avoid having to input data manually piece by piece. With an easy UI, you will be able get the answer you're looking with ease. This app is for HVAC technicians because it was made by an HVAC technician. With both fan laws present - rpm, cfm, and inches of water column become easier to work with. When trying to find the mixed temperature of air entering the return coil, one may find himself entering and re-entering data over and over again. That's because the average calculator was not designed for HVAC. Well this was! If you are in the industry of HVAC then more likely you will be dealing with HVAC calculations and formulas. Well, please enjoy the convenience that was designed for you.

Screenshots

Installer App4 screens
HVAC Formulas Tech Calculator4 screens

Verdict

The call

The clearest difference is rating: HVAC Formulas Tech Calculator at 3.7 against Installer App's 3.0. HVAC Formulas Tech Calculator also leads on update cadence (every 4 days vs every 5 weeks). Installer App's advantage is review sentiment (50% vs 33%). On price, ratings volume, ads and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

HVAC Formulas Tech Calculator holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 7 and 13 respectively. Written reviews complicate that: 50% of Installer App's written reviews are positive against 33% of HVAC Formulas Tech Calculator's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Installer App ships an update every 5 weeks, HVAC Formulas Tech Calculator every 4 days. The most recent releases landed on September 1, 2026 and July 7, 2026 respectively.

Scorecard3 real differences · 7 level
Installer App versus HVAC Formulas Tech Calculator: the parameters behind the verdict, then further details
ParameterInstaller AppHVAC Formulas Tech Calculator
PriceFreeFree
Rating3.0 (7 ratings)3.7 (13 ratings) — better
Positive reviews50.0% of reviews — better33.3% of reviews
Number of ratings713 — better
Update frequencyEvery 5 weeksEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size90 MB1 MB
Age rating4+4+
DeveloperDanfoss A/SSergio Bost

Customer experience

Installer App

All ratings7 ratings
Positive42.9%
Neutral0.0%
Negative57.1%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

HVAC Formulas Tech Calculator

All ratings13 ratings
Positive69.2%
Neutral0.0%
Negative30.8%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

Installer App

No in-app purchases

None

HVAC Formulas Tech Calculator

No in-app purchases

Questions

Is Installer App free?
Installer App is free to download, with no in-app purchases.
Is HVAC Formulas Tech Calculator free?
HVAC Formulas Tech Calculator is free to download, with no in-app purchases.
Which has better reviews, Installer App or HVAC Formulas Tech Calculator?
HVAC Formulas Tech Calculator is rated higher. Installer App averages 3.0 out of 5 from 7 ratings, while HVAC Formulas Tech Calculator averages 3.7 from 13 ratings.
Do Installer App or HVAC Formulas Tech Calculator have ads?
Neither Installer App nor HVAC Formulas Tech Calculator shows ads.
Which is updated more often, Installer App or HVAC Formulas Tech Calculator?
Installer App ships an update every 5 weeks, and HVAC Formulas Tech Calculator every 4 days. Most recently, Installer App was updated on September 1, 2026 and HVAC Formulas Tech Calculator on July 7, 2026.

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