Aquasana AQ-5300+ Max Flow vs PUR PLUS FM-3700B — Which Should You Buy?
Side-by-side comparison of Aquasana AQ-5300+ Max Flow and PUR PLUS FM-3700B. We compare specs, performance, and value to help you decide.
Feature Comparison
| Feature | Aquasana AQ-5300+ Max Flow | PUR PLUS FM-3700B |
|---|---|---|
| Type | Carbon + prefilter | 2-stage carbon |
| Capacity | 800 gallons | 100 gallons |
| Flow Rate | 0.72 GPM | — |
| Prefilter | Sediment | — |
| Removes | Lead, PFOA, chlorine | Lead, chlorine |
| Certification | NSF | NSF |
| Filter Life | 6 months | 3 months |
| Warranty | 1 year | 90 days |
| Installation | — | Under sink |
| Faucet | — | Included |
Aquasana AQ-5300+ Max Flow
Pros
- ✓Higher capacity
- ✓Prefilter for sediment
- ✓Faster flow
- ✓Claryum technology
- ✓NSF certified
- ✓No electricity
- ✓Easy filter change
Cons
- ✗More expensive than 5200
- ✗Doesn't remove fluoride
- ✗Filter cost
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
Aquasana AQ-5300+ Max Flow
The best under-sink filter for higher flow and sediment-heavy water.
Special Deal Available — See OfferPUR 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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