Luminor Blackcomb LB5-151
#2 in Up to 12 GPMFull review
A well built Canadian unit with an honest 12 GPM rating at the full dose, for a typical well home. Buy the LB6 version if you want a sensor from day one.
Amazon $840.15$840.15
The Luminor Blackcomb LB5-151 rates 2.7 among up to 12 GPM UV water purifiers; the iSpring UVF50 LED rates 2.2 among over 12 GPM ones. The iSpring UVF50 LED costs $340.16 less ($499.99 vs $840.15).
iSpring UVF50 LED
#8 in Over 12 GPMFull review
The larger of iSpring’s LED units, for a home that wants mercury free UV with 1 in plumbing. As with all LED units here, little about its dose is published.
Amazon $499.99$499.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different flow classes (up to 12 GPM and over 12 GPM), and each is scored against the reference points for its own class, so a rating says how well each does among its own flow peers. How we rank explains each factor.
| Factor weight | Luminor Blackcomb LB5-151 | iSpring UVF50 LED |
|---|---|---|
| Overall rating | 2.7/5 | 2.2/5 |
| Value 25% | 54 $70.01 per GPM ($840.15, 12 GPM at 40 mJ/cm²) | 43 $94.34 per GPM ($499.99, 5.3 GPM at 40 mJ/cm², from 13.2 GPM at an unstated dose taken as 16) |
| Certification 20% | 30 not NSF/ANSI 55 certified; flow rated at a stated 40 mJ/cm² dose | 0 not NSF/ANSI 55 certified, and no UV dose published |
| Monitoring 20% | 40 lamp failure alarm, lamp change countdown | 50 monitoring not published (neutral score used) |
| Lamp life 10% | 6 9,000 hour mercury lamp | 0 8,000 hour LED lamp |
| Warranty 25% | 22 3-year warranty | 0 1-year warranty |
Specifications
| Luminor Blackcomb LB5-151 | iSpring UVF50 LED | |
|---|---|---|
| Disinfection | ||
| Rated flow | 12 GPM at 40 mJ/cm² | 13.2 GPM |
| NSF/ANSI 55 | No | No |
| Lamp | Mercury | LED |
| Lamp power | 50 W | - |
| Lamp life | 9,000 hours | 8,000 hours |
| Monitoring | ||
| UV intensity sensor | No | - |
| Lamp failure alarm | Yes | - |
| Lamp change countdown | Yes | - |
| Shutoff valve | No | - |
| Build | ||
| Chamber | 304 stainless steel | - |
| Ports | 1 in | 1 in |
| Maximum pressure | 150 psi | - |
| Voltage | 120 V | - |
| Warranty | 3 years | 1 year |