Reverse Osmosis Repair & Filter Changes in Fresno & Clovis
Slow flow, a leak under the sink, water that tastes off, or filters years overdue — Nick services most RO brands and gives you a straight answer: fix it or replace it.
- Most brands serviced — APEC, iSpring, Culligan, Kinetico, Watts and more
- Filter and membrane changes — same-week, usually same visit
- Leaks, slow flow, empty tank, bad taste diagnosed on the spot
- Honest call — if it's past saving, you'll hear that first

Your RO system probably isn't broken. It's overdue.
Nine times out of ten, an RO system that trickles, tastes off or has an empty tank simply has spent filters or a clogged membrane. Fresno's water carries enough hardness and chlorine that pre-filters wear out faster than the sticker says. Nick carries common cartridges and membranes on the truck, so most service calls are finished in one visit.
If the leak is from a cracked housing, a failed tank bladder or a unit that's been patched a few too many times, he'll tell you that too — and give you a written price on a replacement so you can compare, with no pressure either way. New RO systems →
Not sure what you have? Text a photo of the unit under the sink to (559) 795-4083 and Nick will tell you what it needs.
What's included
- Diagnosis of flow, pressure, tank and membrane
- Pre-filter, post-filter and membrane replacement (most brands)
- Leak repair: fittings, tubing, housings, faucet
- Tank recharge or replacement
- Sanitizing the system and checking TDS after service
- Written price on a replacement if the unit isn't worth fixing
Sound like your house?
These are the things Nick hears on the phone before a ro service, filters & repair install. Any one of them is worth a free test.
Sound familiar? Call (559) 795-4083 — Nick will test your water free and tell you what it actually needs.
Three steps. About a week, start to finish.
You call or text
Nick picks up or calls you back the same day, and picks a time that works — evenings and weekends included.
Free test at your kitchen sink
About 20 minutes. You see hardness, TDS and chlorine in your own water, and you get a written price for the exact system it needs.
Installed in about a day
Clean copper work, no mess left behind. 100% satisfaction guarantee on the install, plus the manufacturer's warranty on the system.
Rated 5.0 on Google and 4.9 on Yelp.
Fresno Water Pros is the water division of Central Valley Home Upgrades, Nick's Fresno contracting company. These are his real customer reviews, word for word.
Reached out to Nick for a leak on my roof, his communication was prompt and came out the same day to quote. He is very knowledgeable and provided a competitive quote. The roof looks great and he'll be back to replace some additional broken tiles. An honest and good guy to work with, highly recommend.
Nick is very professional and someone you can trust. His variety of services, competitive pricing, and communication/responsiveness make him a pleasure to work with. Highly recommend!
Nick was very prompt on his response and reliable. His crews are easy to work with and respect the property. I would hire his company to do the future home improvements or upgrades.
The best pricing in the Valley — and you'll get it in writing.
Nick is running his best pricing of the year on complete whole-home systems, softeners and reverse osmosis drinking water. No coupon, no gimmick: call, get your number, and decide on your own time.
- Free in-home water test — a $149 value, no obligation
- Written price the same visit — nothing gets installed until you say yes
- Installed in about a day — usually within the week
- 100% satisfaction guarantee on the installation, plus the manufacturer's warranty on every system
Call for your number
Nick gives you the special pricing over the phone or at the free test — whichever you prefer.
The right system for your water — not a package off a shelf.
Every home's water is different. We test first, then install only what your water actually needs. Systems by California Honest Water Co, installed and warranted by Nick.

Water Softeners
Stops the scale, protects your water heater and appliances, and makes soap actually rinse off. Smart metered valve, USA-made softening resin.
- Whole-house soft water from every tap
- Metered regeneration — uses salt only when needed
- Salt-free conditioner option

Whole-House Water Filtration
Filtered at the point of entry, so every tap, shower and appliance in the house gets clean water. Coconut-shell carbon for chlorine, chemical taste and odor.
- Chlorine and chemical taste out of every tap
- Pairs with a softener as one complete system
- NSF-certified filtration media

Reverse Osmosis Drinking Water
Bottled-quality drinking water straight from your kitchen tap. Multi-stage reverse osmosis with alkaline remineralization, tankless 800 GPD option.
- No more hauling cases of bottled water
- Alkaline stage adds the minerals back
- Dedicated faucet, quick-connect fittings

Well Water Treatment
Nitrate, iron and sediment treatment for wells in Madera and the county. We test the well first and build the treatment around what's actually in it.
- Free on-site well water test
- Iron, sediment and nitrate removal
- Softening for hard well water

Under-Sink Drinking Water Filters
Compact under-sink drinking water systems for renters, condos and smaller homes. Clean drinking water at the kitchen tap without touching the rest of the house.
- Installs in a couple of hours
- Great for renters and smaller homes
- Upgrade to full RO any time
RO Service, Filters & Repair questions, answered.
Do you service RO systems you didn't install?
Yes — most brands, including APEC, iSpring, Waterdrop, Culligan, Kinetico, Watts, Whirlpool and the big-box units. Text a photo if you're not sure what you have.
Why is my RO water so slow?
Usually spent pre-filters or a fouled membrane; sometimes low tank pressure or a bad tank bladder. Nick checks all four and fixes what's actually wrong.
How much does an RO filter change cost?
It depends on the brand and how many stages you have. Nick gives you the price on the phone or by text once he knows the unit — no trip charge surprises.
Should I fix my old RO or replace it?
If the housing, tank and faucet are sound, a filter and membrane change brings most units back to new. If it's leaking from multiple points or over 10–12 years old, a new tankless system is often the better money. Nick will tell you which, in writing.
Can you fix a leak under my sink from the RO?
Yes. Most RO leaks are at push-fit fittings, the tubing or the drain saddle — quick repairs. Cracked housings get replaced.
How fast can you come out?
Same week, often sooner. Evenings and weekends included.
RO acting up? Text a photo.
Free 20-minute in-home water test. Written price the same visit. Nick does the test, the price and the install himself.