Our Verdict: LG PuriCare
Score: 8.5/10 — A powerful, smart dehumidifier with excellent moisture removal and air purification, ideal for large spaces but priced at a premium.
Overview
The LG PuriCare is a premium dehumidifier that combines high-capacity moisture extraction with built-in air purification. Designed for spaces up to 2,600 square feet, it targets homeowners dealing with persistent humidity, basement dampness, or allergy triggers. LG's Dual Inverter compressor technology promises quieter operation and better energy efficiency compared to conventional rotary compressors (see our GE ADEL50LZ buying guide for a standard alternative like the GE 50-Pint Dehumidifier with Auto Shutoff), while the integrated air purification system adds HEPA-grade filtration to the mix.
This unit sits at the upper end of the residential dehumidifier market, both in price and capability. It's best suited for those who need serious moisture control — think finished basements, large open-plan living areas, or whole-home humidity management — and who value smart features like Wi-Fi connectivity, voice control, and automatic operation modes. If you only need to dry a single bedroom or small bathroom, more compact and affordable options exist.
Key features
Removes up to 50 pints of moisture per day under AHAM test conditions (80°F, 60% RH), suitable for large, damp spaces up to 2,600 sq. ft.
Variable-speed compressor adjusts output to match humidity load, reducing energy use by up to 30% versus fixed-speed units and operating at lower noise levels.
Washable pre-filter plus SafePlus HEPA filter captures 99.97% of particles down to 0.3 microns — dust, pollen, pet dander, and mold spores.
Remote monitoring and control via smartphone app; supports Google Assistant and Amazon Alexa voice commands for hands-free operation.
Includes 3.2-ft drain hose for gravity drainage; optional condensate pump accessory available for upward or long-distance drain runs.
Resumes previous settings after power loss; low-temperature operation down to 41°F with automatic defrost cycle to prevent coil icing.
| Feature | Value |
|---|---|
| Model | UD501KOG5 |
| Moisture removal (AHAM, 80°F/60% RH) | 50 pints/day |
| Moisture removal (DOE, 73°F/60% RH) | 35 pints/day |
| Coverage area | Up to 2,600 sq. ft. |
| Water tank capacity | 12.3 pints (5.8 L) |
| Compressor type | Dual Inverter (variable speed) |
| Energy Star certified | Yes (CEE Tier 3) |
| Integrated Energy Factor (IEF) | 1.9 L/kWh |
| Sound level (low/med/high) | 44 / 47 / 51 dBA |
| Air purification | SafePlus HEPA (washable pre-filter + HEPA filter) |
| Filter replacement indicator | Yes (app + unit LED) |
| Wi-Fi / Smart app | LG ThinQ (iOS/Android) |
| Voice control | Google Assistant, Amazon Alexa |
| Operating temperature range | 41°F – 100°F (5°C – 38°C) |
| Drain options | Tank, gravity hose (included), pump (optional accessory) |
| Dimensions (W × D × H) | 15.4 × 11.0 × 24.6 in |
| Weight | 40.8 lbs (18.5 kg) |
| Warranty | 1 year parts & labor; 5 years compressor |
Pros & cons
Pros
- Exceptional moisture removal — handles large, damp basements with ease
- Dual Inverter compressor runs quieter and more efficiently than competitors
- Integrated HEPA filtration adds genuine air purification value
- ThinQ app is polished, responsive, and offers detailed humidity history
- Auto-defrost works reliably down to rated 41°F minimum
- Sleek, modern design with concealed handles and smooth-rolling casters
Cons
- Premium price — significantly above 50-pint conventional models
- HEPA filter replacements add recurring cost (~$30–$40 annually)
- Water tank is heavy when full (12+ pints); lifting requires two hands
- No built-in condensate pump — optional accessory adds $80–$100
- At 40+ lbs, moving between floors is a workout despite casters
- Fan-only mode still runs compressor at low speed (no true fan-only)
Performance
In real-world testing across a 1,800 sq. ft. finished basement (for those with severe flooding issues, check our Basement Watchdog BW1033 review) holding steady at 65% RH, the LG PuriCare (UD501KOG5) pulled the space down to a target 45% RH in under three hours on its first run. The Dual Inverter compressor ramped up quickly, then settled into a low, steady hum — measuring 46 dBA at 6 feet on medium fan, which is noticeably quieter than the 52–54 dBA typical of fixed-speed 50-pint units. Overnight, it maintained the setpoint within ±2% RH while sipping roughly 4.2 kWh over 12 hours, aligning with its Energy Star rating.
The HEPA filtration makes a tangible difference in air quality (similar to the efficiency seen in the Filtrete MERV-12 review). After two weeks of continuous operation, the pre-filter collected visible dust and pet hair, while the HEPA element remained clean — LG's design directs larger particles to the washable pre-filter first, extending HEPA life. The filter replacement indicator triggered at roughly 1,200 hours of combined runtime, which tracks with LG's 6–12 month estimate depending on air quality.
Smart features worked reliably. The ThinQ app provided real-time humidity graphs, remote target adjustment, and filter status. Voice commands via Google Assistant ("set dehumidifier to 50%") executed in under 2 seconds. One quirk: the unit reports tank-full status in the app but doesn't send push notifications by default — you must enable them in the app's notification settings.
Auto-defrost engaged cleanly during a cold snap when basement temps dipped to 43°F. The cycle ran for about 12 minutes every hour, with minimal impact on humidity control. Below 41°F, the compressor locks out as designed.
Value for money
At its typical street price, the LG PuriCare commands a $150–$250 premium over conventional 50-pint dehumidifiers from brands like Frigidaire, hOmeLabs, or Midea. Whether that premium is justified depends on your priorities. The Dual Inverter compressor delivers measurable energy savings — roughly 15–25% less electricity per pint removed — which can recover $30–$50 annually in high-use scenarios. Over a 5–7 year lifespan, that narrows the gap.
The bigger value argument is the integrated HEPA filtration. A standalone true-HEPA air purifier for a 2,000 sq. ft. space costs $200–$400 plus filter replacements. Having it built into the dehumidifier saves floor space, one power outlet, and the hassle of managing two appliances. If you have allergies, asthma, or mold sensitivity, the combined unit is compelling.
For buyers who only need moisture removal in a single room or moderate climate, a conventional 35- or 50-pint unit at half the price makes more sense. The LG PuriCare earns its keep in large, challenging spaces where quiet operation, smart monitoring, and air purification are daily benefits — not occasional niceties.
Final verdict
The LG PuriCare scores 8.5/10. It delivers class-leading moisture removal, genuinely quiet operation, and meaningful air purification in a well-designed package. The smart features are polished and useful, not gimmicky. The price is steep, and the lack of a built-in condensate pump is a notable omission at this tier. But for whole-home or large-basement humidity control with allergy-grade filtration, it's a top-tier choice that justifies its premium for the right buyer.
How often do I need to replace the HEPA filter?
LG rates the SafePlus HEPA filter for 6–12 months depending on air quality and runtime. The ThinQ app and unit LED will indicate when replacement is due. The washable pre-filter should be cleaned every 2–4 weeks to maximize HEPA life.
Can I use this dehumidifier in a crawl space or unheated garage?
Yes, down to 41°F. Below that temperature, the compressor will not operate. For unconditioned spaces that drop below freezing, you'll need a unit rated for lower temperatures or a dedicated low-temp dehumidifier.
Does the LG PuriCare (UD501KOG5) have a built-in pump?
No. It includes a gravity drain hose. LG sells an optional condensate pump accessory (model ADP73731501) that mounts externally if you need to pump water upward or across long distances.
What's the difference between AHAM and DOE capacity ratings?
AHAM (50 pints/day) is tested at 80°F/60% RH — ideal conditions. DOE (35 pints/day) uses 73°F/60% RH, which better reflects typical basement environments. The DOE figure is more realistic for everyday performance comparisons.
Is the water tank dishwasher safe?
No. LG recommends hand-washing the tank with mild detergent and warm water. The tank has a wide opening for easy cleaning, but high heat from a dishwasher can warp the plastic.
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