Waterdrop Chromium Under-Sink vs PUR PLUS FM-3700B — Which Should You Buy?
Side-by-side comparison of Waterdrop Chromium Under-Sink and PUR PLUS FM-3700B. We compare specs, performance, and value to help you decide.
Feature Comparison
| Feature | Waterdrop Chromium Under-Sink | PUR PLUS FM-3700B |
|---|---|---|
| Type | Direct connect | 2-stage carbon |
| Installation | No drilling | Under sink |
| Stages | 3 | — |
| Removes | Chlorine, lead, sediment | Lead, chlorine |
| Capacity | 320 gallons | 100 gallons |
| Faucet | Uses existing | Included |
| Design | Compact | — |
| Warranty | 1 year | 90 days |
| Certification | — | NSF |
| Filter Life | — | 3 months |
Waterdrop Chromium Under-Sink
Pros
- ✓No faucet drilling
- ✓Uses existing faucet
- ✓Renter-friendly
- ✓3-stage filter
- ✓Easy install
- ✓Compact
- ✓Good for apartments
Cons
- ✗Lower capacity
- ✗Filtered and unfiltered from same faucet
- ✗Not RO
PUR PLUS FM-3700B
Pros
- ✓Budget-friendly
- ✓NSF certified
- ✓Reduces lead, chlorine
- ✓2-stage
- ✓Simple install
- ✓Dedicated faucet
- ✓Trusted brand
Cons
- ✗Basic filtration
- ✗Doesn't remove fluoride
- ✗Filter life 3 months
Our Verdict
Waterdrop Chromium Under-Sink
The best under-sink filter for renters—no permanent modifications required.
Limited Offer — Check Today's PricePUR PLUS FM-3700B
The best budget under-sink filter—basic NSF-certified filtration at the lowest price.
Limited Offer — Check Today's PriceOur Methodology
We test each under-sink filter for contaminant reduction, installation ease, and long-term cost. No manufacturer has editorial influence.
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