Spring & FallSeasonal Service & Pad Swap
- Pad replacement (Aspen or rigid)
- Pump test & priming
- Belt + bearing inspection
- Float valve adjustment
High Desert Evap Cooling
Pad Swaps · Motor & Pump Repair · New Installs · AC Conversions
Swamp CoolerServiceHigh Desert & Inland Empire
Evaporative cooler repair, replacement, and installation across Hesperia, Victorville, Apple Valley, Yucca Valley, and the rest of the IE — by licensed techs who actually know swamp coolers.
10 Years
Inland Empire
EPA 608
Universal Certified
Same-Day
Emergency Dispatch
Both Counties
Riverside & SB
High Desert Evaporative Coolers
Swamp Coolers Still Work — Where The Air Is Dry
The High Desert is one of the last regions in California where evaporative ("swamp") cooling still makes economic sense. In Hesperia, Victorville, Apple Valley, Adelanto, and Yucca Valley, summer humidity stays below 25% on most days — exactly the range where a $25/month-to-run rooftop evap cooler delivers 18–22° of cooling that an $80–$250/month refrigerated AC can barely beat. Tech On Call services, repairs, and replaces evaporative coolers across the High Desert and the rest of the Inland Empire — pad changes, motor swaps, pump repair, float-valve replacement, and complete new installs.
The most common service calls are seasonal startup ("won't run after winter") and pad-clog ("blower runs but no cool air"). After winter the pump typically needs to be primed or replaced, the float valve checked, and Aspen pads or rigid media swapped. Mid-summer, the issue is usually pad scaling from hard High Desert water, a stretched belt, or worn squirrel-cage bearings. We service every type — Champion, MasterCool, Phoenix Aerocool, and the older Brisk Air rooftop units — and we still install new ones for customers who want the operating cost.
For customers ready to switch to refrigerated AC, we quote conversions honestly. Refrigerated AC costs 3–10x more to operate but adds humidity control, works during the muggy monsoon weeks, and adds resale value. Swamp coolers cool better than refrigerated AC for less money — when the humidity is below 30%. Coastal IE customers (Corona, Riverside, Eastvale) are typically better served by refrigerated AC. See also: AC repair.
Licensed & Insured
Same-Day Service
Flat-Rate Pricing
Both IE Counties
Common Problems
What We Fix Every Summer
Diagnose · Repair · Restore
01
Won't Start After Winter
Pump seized, motor bearings dry, belt cracked — seasonal startup service.
02
Pump Won't Pump
Mineral scale, motor failure, or float-valve stuck closed.
03
Blower Runs But No Cool
Pads dry or scaled, water distribution lines clogged with hard-water scale.
04
Loud / Vibrating
Worn squirrel-cage bearings, unbalanced wheel, or loose roof curb.
05
Water Leaking From Cabinet
Failed bleed-off, cracked sump, or stuck float — full inspection.
06
Trips Breaker
Motor windings shorting or wet electrical from cabinet leak.
Services
Full Evap Service
Spring & FallSame-DayRepair
- Motor & pump replacement
- Belt + blower wheel service
- Hard-water scale cleaning
- Electrical & control repair
Turn-KeyReplacement & New Installs
- Champion / MasterCool / Aerocool
- 3,500–6,500 CFM sizing
- Conversion-to-AC quotes
- Roof curb + ducting + electrical
Brands
Every Evap Cooler Brand
Champion Cooler, MasterCool, Phoenix Manufacturing (Aerocool), Brisk Air, Essick — we service the full lineup, including the older 30-year units still running in High Desert tracts.
AprilaireHoneywellTrane CleanEffectsLennox PureAirCarrier InfinityiWaveREME HALOAirScrubberBroanPanasonicGreenheckCaptiveAireLoren CookReznorModineMammothPhoenix ManufacturingChampion CoolerMasterCoolAerocool
Evap Cooler Types
Every Evap Configuration
01
Rooftop (Downdraft)
Standard High Desert install — supplies straight down through a roof curb.
02
Sidewall (Window)
Older homes with side-wall mounts — still common in original IE tract neighborhoods.
03
Aspen Pad Coolers
Classic 3,500–4,500 CFM units with Aspen pads — annual pad swap.
04
Rigid-Media (MasterCool)
8" CelDeck or similar rigid media — higher efficiency, longer-life pads.
05
Light-Commercial Evap
Warehouses, manufacturing, garages — bigger CFM units for high cube spaces.
06
Conversions To AC
Refrigerated AC retrofits when humidity and resale matter more than operating cost.
Process
How A Real Evap Job Runs
- 01
Call & Schedule
A real dispatcher answers — no phone tree. Same-day or next-morning ETA confirmed, and we text the tech's name and photo before arrival.
- 02
Inspection & Test
Flat-rate diagnostic. Tech measures static pressure, airflow (CFM), filter restriction, hood capture, and IAQ baseline — then explains findings in plain English.
- 03
Written Scope & Quote
You see the work and the price before anything starts. Diagnostic fee credits toward the repair when you proceed.
- 04
Install Or Repair
Most repairs (boots, dampers, fans, motors, filters) are completed same-visit. Larger ductwork or hood jobs scheduled within 48–72 hours.
- 05
Verify & Document
We retest static, CFM, and IAQ deltas and document everything — parts used, before/after numbers, warranty terms.
High Desert Evap Cooling
Champion · MasterCool · Aerocool
Cool For 70% Less.
01
EPA 608 Certified
Universal-certified techs on every repair, install, and recovery — R-410A, R-32, R-454B handled correctly.
02
Same-Day Response
When the AC quits in the Inland Empire heat, you don't have hours. Same-day dispatch across both counties.
03
Flat Pricing
Diagnostic and repair quoted before any work begins. The number on-site is the number on the invoice.
04
Maintenance Plans
Spring tune-ups, filter swaps, and priority dispatch on annual plans built for desert summers.
View PlansRelated Services
Keep Exploring Tech On Call
01
AC Installation
Refrigerated AC conversion quotes — honest payback math vs swamp cooling.
Open
02AC Repair
Year-round refrigerated AC service across the IE.
Open
03Ductwork
Conversion from swamp ducting to sealed R-8 supply ducts for AC.
Open
04Mini-Splits
Ductless AC retrofit option for homes that never had real ducts.
Open
Service Areas
Serving All of Riverside & San Bernardino County
Service Area
Riverside County
27
Cities
Don't see your city? Call (909) 239-6364 — we likely cover your area.
Swamp Cooler FAQ
Evaporative Cooler Questions
01
Are swamp coolers still worth it in the IE?
In the High Desert (Hesperia, Victorville, Apple Valley, Yucca Valley) — yes, 70% cheaper to run than refrigerated AC. Coastal IE — refrigerated AC is usually the better call.
02
How much does swamp cooler replacement cost?
$2,200–$4,800 installed depending on CFM, housing, and ducting/electrical condition.
03
How often do pads need to be changed?
Aspen pads every 1–2 seasons; rigid media (MasterCool) every 3–5 years.
04
Can you convert from swamp cooler to AC?
Yes — quoted with honest payback math. See AC installation.
05
Why won't my swamp cooler turn on after winter?
Pump seized, motor bearings dry, belt cracked, or float valve stuck — standard spring startup service.
06
Why is there hard water buildup ruining my pads?
High Desert water is mineral-heavy. We can add a bleed-off kit and recommend a service interval that flushes the sump regularly.
07
What cities do you serve for ductwork and ventilation?
Every city in Riverside and San Bernardino County — Riverside, San Bernardino, Fontana, Rancho Cucamonga, Ontario, Corona, Moreno Valley, Temecula, Murrieta, Redlands, Hesperia, Victorville, and the Coachella Valley. High Desert dust loads drive a lot of our duct-cleaning and filter calls; coastal-IE humidity drives IAQ work.
08
Do you warranty ductwork and ventilation work?
Every ductwork install carries a workmanship warranty. Equipment — IAQ purifiers, dehumidifiers, exhaust fans, hoods — is registered with the manufacturer and most ship a 5–10 year parts warranty when registered within 60 days. We handle the paperwork.
09
Do you offer financing on whole-home IAQ or new ductwork?
Yes — financing is available on qualifying ductwork replacement, IAQ packages, and whole-home dehumidifier installs. We walk through monthly payment options and any SCE/SoCalGas rebates before you commit.