Comparison

Rheem vs Lennox Smart Tech

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

Head to head
About

Rheem

This app streamlines HVAC installation and service for contractors. It offers Bluetooth connectivity for system setup and troubleshooting, along with comprehensive support for product information, warranty tracking, and locating resources.

Highlights
  • Bluetooth setup and troubleshooting
  • System monitoring and status checks
  • Alarm diagnosis and history
  • Parts replacement guidance
  • Access to manuals and tech sheets
  • Warranty tracking and certificate sharing
  • Retailer and distributor locator
Features
Read full description

We’ve redesigned Rheem for Contractors to offer the industry’s most powerful, intuitive, and easy-to-use app. Whether you’re on a residential service call or installing 40 units at a major site, the free Rheem Contractor app’s Bluetooth® capability – paired with an enabled HVAC system -- makes set-up and troubleshooting simpler than ever. With Rheem for Contractors and eligible air systems, you can easily: Install - Set up systems quickly and easily with the new Bluetooth® setup - Monitor operating parameters from your phone while charging outdoor units - Verify system setup with access to system operating status - Quickly check for alarms Service - Diagnose active alarms and alarm history - Check system operating status - Easy step-by-step parts replacement and system setup The Rheem for Contractors app also offers powerful support for all of our air and water products, with a new Product Technical Support design that is easier to use and more accurate than ever: - Access installation instructions - Search parts lists - Download manuals - View tech sheets - Research consumer literature Track Warranty information - Scan and confirm model and ownership details - Check warranty status and share HVAC systems warranty certificate Locate - Look up retailers - Look up distributors Research - Find up-to-date rebate information - Research financing options - Offer extended warranty - Confirm AHRI information and certification for HVAC systems

About

Lennox Smart Tech

Streamline the installation and servicing of compatible home comfort systems. This app allows for remote testing, diagnostics, and system setting adjustments directly from a smartphone, reducing the need to physically interact with equipment.

Highlights
  • Install and service home comfort systems
  • Test and run diagnostics remotely
  • Adjust system settings from smartphone
  • Compatible with Lennox S40/L40/M40/E40 Smart Thermostats
  • Direct smartphone control
Read full description

With the Lennox Smart Tech App, you'll have the latest technology to more quickly and easily install and service a fully communicating home comfort system with the Lennox S40/L40/M40/E40 Smart Thermostat. You can reliably run tests, diagnostics, and change system settings directly from your smartphone without the back and forth from equipment to thermostat.

Screenshots

Rheem4 screens
Lennox Smart Tech4 screens

Verdict

The call

Rheem and Lennox Smart Tech both sit at 4.6 stars, but that hides the real split: 43% of Rheem's written reviews are positive against 0% of Lennox Smart Tech's. Rheem also leads on ratings volume (1.7K vs 60). On price, rating, update cadence and ads 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

On the App Store both sit at effectively the same score — 4.6 for Rheem against 4.5 for Lennox Smart Tech. That said, the two scores are not equally well evidenced: Rheem has 1.7K ratings behind it against 60, so its average is the more settled of the two. Written reviews are what separate them: 43% of Rheem's written reviews are positive against 0% of Lennox Smart Tech's.

UpkeepUpdate frequency

Rheem ships an update monthly, Lennox Smart Tech every 2 months. The most recent releases landed on September 24, 2026 and August 15, 2026 respectively.

Scorecard2 real differences · 8 level
Rheem versus Lennox Smart Tech: the parameters behind the verdict, then further details
ParameterRheemLennox Smart Tech
PriceFreeFree
Rating4.6 (1.7K ratings) — better4.5 (60 ratings)
Positive reviews42.9% of reviews — better0.0% of reviews
Number of ratings1.7K — better60
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone, iPad — better
Requires iOS16.016.0
Further details — not scored
Size109 MB98 MB
Age rating4+4+
DeveloperRheem Manufacturing CompanyLennox Industries

Customer experience

Rheem

All ratings1,713 ratings
Positive90.0%
Neutral2.6%
Negative7.4%
Written reviews14 reviews
Positive42.9%
Neutral0.0%
Negative57.1%

Lennox Smart Tech

All ratings60 ratings
Positive85.0%
Neutral3.3%
Negative11.7%
Written reviews4 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Rheem

No in-app purchases

None

Lennox Smart Tech

No in-app purchases

Questions

Is Rheem free?
Rheem is free to download, with no in-app purchases.
Is Lennox Smart Tech free?
Lennox Smart Tech is free to download, with no in-app purchases.
Which has better reviews, Rheem or Lennox Smart Tech?
Rheem is rated higher. Rheem averages 4.6 out of 5 from 1.7K ratings, while Lennox Smart Tech averages 4.5 from 60 ratings.
Do Rheem or Lennox Smart Tech have ads?
Neither Rheem nor Lennox Smart Tech shows ads.
Which is updated more often, Rheem or Lennox Smart Tech?
Rheem ships an update monthly, and Lennox Smart Tech every 2 months. Most recently, Rheem was updated on September 24, 2026 and Lennox Smart Tech on August 15, 2026.

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