A technician's phone carries two kinds of HVAC apps and they should not be confused. The first kind runs the business: the schedule, the customer and unit record, the price book, the ticket, the signature and the payment. The second kind helps at the unit: charging charts, duct sizing, psychrometrics, model number decoding. This page is for the owner or technician in a US HVAC contracting business sorting the two, and it covers what each kind must do, what the free ones are good for, and the test that decides which business app the crew will actually open.
The business app is the only one that has to be shared
Every technician can carry whichever charging chart they like. The business app is different: the whole crew has to use the same one, because the schedule, the price book and the customer record only work when everyone writes into them. That is why the choice matters and why it should be made by watching a technician use it rather than by reading a feature list. The best apps for HVAC business use are the ones a new starter can run a ticket through without calling the office.
What the business app must do at the door
Open the customer and the unit from the day's schedule. Record readings against the unit. Price the repair from the flat rate book so the number is the same whoever quotes it. Show options, take approval and a signature on the screen. Invoice and take payment before leaving. Work offline in a basement and sync when the signal returns. Each of those within two taps, one-handed. Anything else is secondary.
Free HVAC apps: what they are good for
Free apps are excellent at arithmetic and reference: superheat and subcooling, target airflow, duct sizes, conversions. The free tools on this site do the business arithmetic the same way: the labor rate, the job price, the quote, the invoice and the checklist compute on the page without an account. What free apps do not do is keep the record, and the record is what the business is.
Pricing the paid app by the crew
Business apps are priced per user almost everywhere, and every technician is a user. Jobber lists Core at $49 per month for one user and $29 per month for each additional user; Housecall Pro lists Basic at $79 per month for one user. Multiply by the crew and the office before you compare. CoilDesk Pro is $29 per month for the whole crew.
The test that decides
Give each vendor the same job from last month and ask them to run it end to end on a phone while a technician watches: call, unit, diagnosis, price, approval, invoice, payment. Count the taps. The app that gets to a paid ticket with the fewest is the one the crew will open tomorrow; the rest will be uninstalled by the end of the season.
Questions people ask about hvac apps
What is the best HVAC app for a small contractor?
The business app the crew will actually use, which you find by watching a technician run a real ticket through it. There is no single best; there is the best fit for your crew and your phones.
Are free HVAC apps enough to run a business?
For the arithmetic and the paperwork, the free tools here and a good charging app go a long way. For keeping the customer and unit record across the crew, you need a shared system, paid or not.
Should technicians use personal phones for the business app?
Most shops allow it with a written boundary: what the app records, when it uses location, and what happens if the phone is lost. Write it down before the first install.