Comparison

Rinnai Central vs MachBackflow

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

Head to head
About

Rinnai Central

This app connects Rinnai tankless water heater owners to their devices for temperature control and scheduling. Professional installers can use it to register appliances, perform service, access documentation, and order parts.

Highlights
  • Adjust water temperature
  • Schedule hot water
  • Activate recirculation
  • Register appliances
  • Perform remote service
  • Access documentation
  • Order replacement parts
Features
Read full description

Rinnai Central helps professionals support customers and gives homeowners convenient control of compatible Rinnai water heating systems from anywhere. For Rinnai PROs and installers, Rinnai Central makes it easier to register products, set up compatible customer devices, access service tools, and stay connected to Rinnai resources. For Rinnai tankless water heater owners, Rinnai Central provides convenient access to temperature control, recirculation settings, scheduling, system status, and maintenance alerts when supported by the connected product. PROFESSIONALS Use Rinnai Central to: ∙ Set parameters and perform service on compatible Rinnai tankless water heaters and boilers. ∙ Register eligible Rinnai products after installation. ∙ Set up and configure compatible customer Wi-Fi modules. ∙ Access product documentation, troubleshooting tools, training, rebates, news, and service resources. ∙ Find the right Rinnai product for your customer's needs. ∙ Access the Rinnai parts webstore. ∙ Manage your professional account and company relationship. ∙ Participate in eligible Rinnai PRO Tech programs when available. HOMEOWNERS Use Rinnai Central to: ∙ Adjust compatible water heating system temperature settings. ∙ Activate recirculation when supported by the product. ∙ Create daily schedules so hot water is ready when needed. ∙ Set vacation mode to help save energy when hot water is not needed. ∙ View real-time system status and maintenance alerts. ∙ Find experienced Rinnai PROs and installers near you. COMPATIBLE PRODUCTS Rinnai Central supports select Rinnai residential and commercial tankless water heaters and compatible accessories. Some features require a supported Rinnai Wi-Fi module or compatible connected product. Product availability, supported features, and access permissions may vary by model. - BLE setup is not available on all Rinnai products. Some products may require the RWM200 Wi-Fi Module accessory, sold separately. - For safety and product support reasons, some device setup and service permissions may be restricted to Rinnai professionals. Read our Data Use and Privacy Policy, Terms, and other important information in the legal section of our App Store description or at the web addresses below. TERMS OF SERVICE https://www.rinnai.us/terms-of-use PRIVACY POLICY https://www.rinnai.us/privacy-policy

About

MachBackflow

This app streamlines backflow prevention assembly testing by capturing real-time pressure readings or allowing manual entry. It automatically generates accurate reports and manages all your tests efficiently from the field.

Highlights
  • Real-time pressure capture
  • Supports all assembly types and procedures
  • Autofill property and assembly information
  • Accurate, error-free PDF reports
  • Cloud synchronization
  • Powerful search and filters
Read full description

MachBackflow is the ultimate mobile solution for backflow prevention assembly testing. Whether you’re using the Mid-West® Instrument 855® Digital Test Kit, the industry-leading 845® Test Kit, or another model of test kit, the app puts complete control in the hands of the tester. Capture real-time pressure readings with the 855® or manually enter results from any test kit. Generate reports automatically and manage all your tests with ease — right from the field. Key Features: Real-Time Pressure Capture Instantly record pressure values from your test kit –  855® Digital, 845®, and other test kits. Supports All Assemblies & Procedures Test RP, DC, PVB, and SVB assemblies using all known procedures with full compliance. Autofill Property & Assembly Info Pre-fill test forms using address or serial number lookup, or enter details manually. Accurate + Error-Free Reports Eliminate handwriting errors. Sync directly to the cloud and generate PDF test reports on the spot. Powerful Search & Filters Quickly retrieve past tests by status (Pass, Fail, Repair) or assembly type.

Screenshots

Rinnai Central4 screens
MachBackflow4 screens

Verdict

The call

The clearest difference is review sentiment: MachBackflow at 100% against Rinnai Central's 9%. MachBackflow also leads on rating (5.0 vs 1.6). Rinnai Central's advantage is in-app purchases (none vs 3) and ratings volume (396 vs 2). On price, update cadence, ads 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

Both are free to download. MachBackflow sells 3 one-off in-app purchases. Rinnai Central asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MachBackflow holds the better App Store score, 5.0 against 1.6. That said, the two scores are not equally well evidenced: Rinnai Central has 396 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 9% of Rinnai Central's written reviews are positive against 100% of MachBackflow's.

UpkeepUpdate frequency

Rinnai Central ships an update monthly, MachBackflow every 2 months. The most recent releases landed on October 27, 2026 and September 18, 2026 respectively.

Scorecard6 real differences · 4 level
Rinnai Central versus MachBackflow: the parameters behind the verdict, then further details
ParameterRinnai CentralMachBackflow
PriceFreeFree
Rating1.6 (396 ratings)5.0 (2 ratings) — better
Positive reviews9.0% of reviews100.0% of reviews — better
Number of ratings396 — better2
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.4.1 — better16.6
Further details — not scored
Size79 MB18 MB
Age rating4+4+
DeveloperRinnai America CorpWTM Solutions, LLC

Customer experience

Rinnai Central

All ratings341 ratings
Positive12.6%
Neutral3.5%
Negative83.9%
Written reviews223 reviews
Positive9.0%
Neutral4.5%
Negative86.5%

MachBackflow

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Rinnai Central

Reported bugs

3 issues
  • Control failed is still happening in latest version
  • Login screen freezes
  • Incompatible with older devices

Requested features

3 requests
  • Add device through Bluetooth missing
  • Dark mode option
  • Advanced analytics dashboard

MachBackflow

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Rinnai Central

No in-app purchases

3 purchases

MachBackflow

One-time3
  • Credits 10$24.99
  • Credits 100$174.99
  • Credits 250$299.99

Questions

Is Rinnai Central free?
Rinnai Central is free to download, with no in-app purchases.
Is MachBackflow free?
MachBackflow is free to download, with in-app purchases available.
Which has better reviews, Rinnai Central or MachBackflow?
MachBackflow is rated higher. Rinnai Central averages 1.6 out of 5 from 396 ratings, while MachBackflow averages 5.0 from 2 ratings.
Do Rinnai Central or MachBackflow have ads?
Neither Rinnai Central nor MachBackflow shows ads.
Which is updated more often, Rinnai Central or MachBackflow?
Rinnai Central ships an update monthly, and MachBackflow every 2 months. Most recently, Rinnai Central was updated on October 27, 2026 and MachBackflow on September 18, 2026.

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