Comparison

HVAC Decoder vs RTUBlue

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

Head to head
About

HVAC Decoder

Decode HVAC model and serial numbers from major brands. This utility app provides thousands of model numbers and can email search results. It supports a wide range of HVAC equipment and offers close matches for unknown numbers.

Highlights
  • Decode HVAC model numbers
  • Decode HVAC serial numbers
  • Supports major HVAC brands
  • Thousands of model numbers
  • Email search results
  • Close match functionality
  • Report missing data
Features
Currently charting
Read full description

This app will decode the model number nomenclature of most HVAC companies. It has all the major brand names with many thousands of model numbers. It will also decode the serial number for many HVAC companies. It has the ability to email the search results in HTML format via an installed mail client. App is effective at decoding model and serial numbers for packaged units, air conditioners / condensing units, air handlers, evaporator coils, furnaces, heat pumps, boilers, chillers, split systems / mini splits, geothermal systems, and more.  If the model number is not found exactly it will try a close match. If there is no close match it will give you the option to report missing data. The data is constantly updated and purchase of the app gets you free updates forever.

About

RTUBlue

Features
Read full description

RTUBlue provides real time local readings from Enetics' devices on your iPhone or iPad. RTUBlue will identify nearby RTU's and present real time readings from the RTU you select. RTUBlue can also initiate a cellular data telemetry session from your Apple device and provide unique names for your RTU's. RTUBlue's features include: - Real time readings delivered to your iPhone or iPad - The ability to name an RTU (tagging) - Initiation of a cellular RTU data telemetry session, including call progress information - Successful installation verifications - Communication range 50 feet, line of sight Make your new Enetics RTU installations and check-ins easier with RTUBlue!

Screenshots

HVAC Decoder4 screens
RTUBlue2 screens

Verdict

The call

The clearest difference is price: RTUBlue at Free against HVAC Decoder's $9.99. HVAC Decoder's advantage is chart position (#170 vs unranked). On update cadence, 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

RTUBlue is free to download; HVAC Decoder costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HVAC Decoder ships an update every 3 months, RTUBlue every 5 months. Both last shipped on October 7, 2026.

Scorecard2 real differences · 9 level
HVAC Decoder versus RTUBlue: the parameters behind the verdict, then further details
ParameterHVAC DecoderRTUBlue
Price$9.99Free — better
Rating4.0 (28 ratings) — better—
Positive reviews68.8% of reviews—
Number of ratings28 — better—
Update frequencyEvery 3 months — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#170 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size6 MB57 MB
Age rating4+4+
DeveloperCharles CopeEnetics, Inc.

In-app purchases

None

HVAC Decoder

No in-app purchases

None

RTUBlue

No in-app purchases

Questions

Is HVAC Decoder free?
HVAC Decoder costs $9.99, with no in-app purchases.
Is RTUBlue free?
RTUBlue is free to download, with no in-app purchases.
Do HVAC Decoder or RTUBlue have ads?
Neither HVAC Decoder nor RTUBlue shows ads.
Which is updated more often, HVAC Decoder or RTUBlue?
HVAC Decoder ships an update every 3 months, and RTUBlue every 5 months. Most recently, HVAC Decoder was updated on October 7, 2026 and RTUBlue on October 7, 2026.

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