Is the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat worth it?
The OJ Microline UWG4-4999 WiFi Floor Heating Thermostat is a top pick with a 9/10 consensus score. Experts highlight true dual sensing (air plus floor) with an adaptive learning function that pre-heats the slab so the floor is warm at the scheduled time, not an hour later. and built-in class a gfci and dual-voltage 120v-240v support handle a 15a zone, roughly 150 sq ft at 120v or 300 sq ft at 240v.. Best for: Buyers who want OEM-reference floor-sensor accuracy, Single-zone tile floors on Alexa or Google.
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OJ Microline UWG4-4999 WiFi Floor Heating Thermostat
Climate Control
Expert consensus
How we scoreKey Features
- ✓ Dual air-and-floor sensing with adaptive pre-heat learning
- ✓ Built-in Class A GFCI for ground-fault protection
- ✓ 15A load capacity, dual-voltage 120V-240V
- ✓ 3.5-inch full-color touchscreen with interactive setup wizard
- ✓ Alexa and Google Assistant voice control
- ✓ Child lock, vacation mode, and open-window detection
Best For
OJ Microline UWG4-4999 WiFi Floor Heating Thermostat vs. the alternatives
How the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat stacks up against other Climate options on price, expert consensus, and ecosystem support.
| Product | Price | Consensus | Works With | Verdict |
|---|---|---|---|---|
| OJ Microline UWG4-4999 WiFi Floor Heating ThermostatThis page | — | 9/10 | Amazon Alexa | Must Buy |
| Dyson Purifier Cool TP07 | — | 9.1/10 | Amazon Alexa | Must Buy |
| Dreo Pilot Pro S | $99.98 | 8.9/10 | Google Home, Amazon Alexa | Must Buy |
| Levoit Smart 42-Inch Tower Fan | $129.99 | 8.6/10 | Amazon Alexa | Recommended |
The OJ Microline UWG4-4999 WiFi Floor Heating Thermostat earns a 9/10 expert consensus, versus the Ecobee Smart Thermostat Premium at $259.99 list (8.8/10 consensus). It works with Amazon Alexa.
What Experts Agree On
What Experts Love
- ✓ True dual sensing (air plus floor) with an adaptive learning function that pre-heats the slab so the floor is warm at the scheduled time, not an hour later.
- ✓ Built-in Class A GFCI and dual-voltage 120V-240V support handle a 15A zone, roughly 150 sq ft at 120V or 300 sq ft at 240V.
- ✓ OEM-grade hardware: OJ Electronics makes the controllers rebadged by Schluter, Nuheat, and others, so the floor-sensor accuracy is the reference the category copies.
- ✓ A 3.5-inch full-color touchscreen with child lock, vacation mode, and open-window detection keeps day-to-day control on the wall, not buried in an app.
Common Criticisms
- ✗ No Apple HomeKit; voice control is limited to Alexa and Google Assistant, a real gap for Apple-first homes.
- ✗ The 5mA GFCI is sensitive to long mat runs, and owners report nuisance trips when total cable length pushes leakage past the threshold.
Frequently Asked Questions
Is the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat worth it?
The OJ Microline UWG4-4999 WiFi Floor Heating Thermostat earns a 9/10 consensus score and is rated "Must Buy". It is best for Buyers who want OEM-reference floor-sensor accuracy. It ranks among the top picks in its category.
How much does the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat cost?
We do not have a verified current price for the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat. It earns a 9/10 consensus score with a "Must Buy" rating, which is strong value relative to the ~7.5/10 average for Climate products. Check the live figure at the retailer before buying.
Who is the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat best for?
The OJ Microline UWG4-4999 WiFi Floor Heating Thermostat is best for Buyers who want OEM-reference floor-sensor accuracy, Single-zone tile floors on Alexa or Google. Experts rate it "Must Buy" with a 9/10 consensus.
How does the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat compare to other Climate options?
Among the Climate products we have aggregated, the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat ranks above average with a 9/10 score. See our full category comparison for head-to-head details.
What smart home systems does the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat work with?
The OJ Microline UWG4-4999 WiFi Floor Heating Thermostat works with Amazon Alexa. Check the compatibility notes above for any hub dependencies or setup requirements before you buy.
What are the best alternatives to the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat?
If the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat (, 9/10) is not the right fit, the closest alternatives in Climate are Schluter DITRA-HEAT-E-WiFi Thermostat (DHERT104), nVent Nuheat Signature WiFi Thermostat (AC0055). Compare them on price, ecosystem support, and expert consensus to find your match.
What are the pros and cons of the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat?
The main strengths of the OJ Microline UWG4-4999 WiFi Floor Heating Thermostat are true dual sensing (air plus floor) with an adaptive learning function that pre-heats the slab so the floor is warm at the scheduled time, not an hour later. and built-in class a gfci and dual-voltage 120v-240v support handle a 15a zone, roughly 150 sq ft at 120v or 300 sq ft at 240v.. The most-cited downside is no apple homekit; voice control is limited to alexa and google assistant, a real gap for apple-first homes.. Overall, experts rate it "Must Buy" with a 9/10 consensus score.
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Sources & Methodology
Consensus score based on available data. See how we build consensus scores.
Affiliate disclosure: SmartHomeExplorer.com participates in the Amazon Associates program. We earn a commission from qualifying purchases at no extra cost to you.This is a consensus review — we did not test this product ourselves. Always verify current prices and availability before purchasing.
Independence notice: Smart Home Explorer is an independent publication. OJ and other product names, logos, and brands referenced on this page are the property of their respective owners and are used for identification purposes only. This review is not sponsored by, affiliated with, or endorsed by OJ or any other manufacturer named in this article.