哪种台下（洗碗槽下）净水器性价比最高？

Product ⇅ Price ⇅ **过滤容量：** (gallons) ⇅ **流量：** (GPM (Gallons Per Minute)) ⇅ **污染物去除能力：** ⇅ **安装难度：** ⇅ **保修：** (years) ⇅ **水压要求：** (PSI (Pounds per Square Inch)) ⇅
Clearly Filtered Clearly Filtered Under Sink 3-Stage Filtration System
US 		£294.81 ≈ 2000 gallons 1.08 GPM 针对多达232+种污染物 快速且简单的DIY（约10-15分钟） 有限终身保修（保修期为24个月） 适用于标准家用水压（约60 psi）

Three-stage under-sink system using Affinity filtration to target hundreds of contaminants while preserving beneficial minerals. Suits households wanting high contaminant coverage without RO complexity or drain line and who prefer an easy DIY install.

Sources:
Clearly Filtered Clearly Filtered - Replacement Filters (bundle listing)
搜索购买:
亚马逊 沃尔玛 易贝 速卖通 京东 淘宝
Aquasana Aquasana OptimH2O Under Sink 2-Stage (Claryum)
US 		£74.44 ≈ 500 gallons 0.5 gpm 减少78种污染物，包括铅 PFAS 微塑料 氯 囊虫 挥发性有机物 石棉 药物 残留 农药 除草剂 DIY安装；简单的自助安装（不需要水管工） 1年有限保修 20-80 psi

Two-stage Claryum under-sink filter uses selective filtration to remove a wide range of contaminants while retaining beneficial minerals. Suited for homeowners who want certified contaminant reduction with easy DIY installation and filter changes every 6 months.

Sources:
Aquasana The Home Depot
搜索购买:
亚马逊 沃尔玛 易贝 速卖通 京东 淘宝
Waterdrop WD-G3P600 (G3P600 8-Stage Reverse Osmosis System)
US 		£292.77 ≈ CF 6个月或550 gallons；CB 12个月或1100 gallons；RO 24个月或2200 gallons 600 GPD 去除TDS、PFOA、PFOS、氟化物、砷、铅、氯、铬-6及1000+种污染物 DIY安装，约30分钟 1年 —

The Waterdrop G3P600 is a tankless 8-stage under-sink RO system delivering fast 600 GPD production with a 2:1 pure-to-drain ratio and NSF certifications. It suits users wanting high-capacity, space-saving RO filtration with replaceable CF/CB/RO cartridges and optional remineralization.

Sources:
Home Depot Waterdrop (official store) Waterdrop (product listing with sale)
搜索购买:
亚马逊 沃尔玛 易贝 速卖通 京东 淘宝
APEC APEC ROES-50 Essence Series (ROES-50)
US 		£171.97 ≈ — 50 GPD @ 60 psi 去除高达99%的污染物，包括氯、氟、砷、铅、铬、重金属、细菌、病毒 随附硬件的DIY安装；需要安装于水槽下 2年（注册后） 40-85 psi

The APEC ROES-50 is a 5-stage under-sink reverse osmosis system providing up to 50 gallons per day of purified water and a 4 gallon storage tank. It suits homeowners who want high contaminant removal and are comfortable with standard under-sink RO installation and maintenance.

Sources:
APEC Water Home Depot Lowe's
搜索购买:
亚马逊 沃尔玛 易贝 速卖通 京东 淘宝
Frizzlife Frizzlife MK99 (Under Sink 3-Stage Filter)
US 		£44.66 ≈ 最长可达2年（建议每6-8个月更换滤芯） 2 GPM @ 60 psi 铅、氯、异味、气味、颗粒物、囊虫（性能数据：囊虫99.95%） 简单免工具，3分钟安装，快换旋入设计 一年有限保修 最小20 psi，最大80 psi

Compact under-sink 2-stage system with 0.5 micron filtration, high flow and auto shut-off for tool-free cartridge changes. Suits households wanting easy installation and filtered drinking water without a tank.

Sources:
Frizzlife Device Report (manual listing)
搜索购买:
亚马逊 沃尔玛 易贝 速卖通 京东 淘宝
Waterdrop Waterdrop 15UA (15UA Single-Stage Under Sink Filter)
US 		£46.15 ≈ 16000 gallons 0.75 gpm PFAS、PFOA/PFOS、铅、氯、重金属、沉积物、异味、口感 简单；推入式连接安装，3分钟设置 1年 10-125 psi

The Waterdrop 15UA is a single-stage under-sink ultrafiltration system certified to NSF/ANSI standards that delivers up to 16,000 gallons of filtered water at 0.75 gpm. It reduces PFAS, lead, chlorine and other common contaminants, installs quickly with push-to-connect fittings, and suits homeowners or renters who want a low-maintenance countertop-alternative for cleaner tap water.

Sources:
Lowe's BestBuy Waterdrop (official)
搜索购买:
亚马逊 沃尔玛 易贝 速卖通 京东 淘宝
Cloud Water Cloud RO (Tank-Based Under Sink Reverse Osmosis System)
US 		£445.94 ≈ 预/后置滤芯 500 gallons，RO膜 1,500 gallons 600 GPD 200+种污染物（去除PFAS、重金属、氟、挥发性有机物、药物残留） 适合DIY；30-60分钟（需要水龙头孔和下水道连接） 1年 —

Cloud RO is a compact under-sink RO system with a built-in battery pump, remineralization, app monitoring, and NSF/ANSI 58 certification. It suits households wanting high contaminant reduction with faster flow and straightforward DIY installation.

Sources:
WaterFilterGuru [blocked] (affiliate listing) Quality Water Lab (review with retailer link)
搜索购买:
亚马逊 沃尔玛 易贝 速卖通 京东 淘宝