"Lou did an efficient job of starting up my swamp cooler for the season. The water pump needed replacing and it was done quickly. The price was quite reasonable for the work done."
Swamp Cooler Service in Denver, CO
Swamp coolers are a Denver thing. In most of the country, evaporative cooling isn't practical, too humid. But Denver's semi-arid climate (average humidity 30-40% in summer, lower in spring and fall) makes evaporative coolers an efficient, low-cost alternative to central AC. When the dewpoint is below 55°F, a properly maintained swamp cooler can cool your home for a fraction of the electricity cost of a refrigerated AC system. Lou's Heating & Cooling knows swamp coolers: startups, shutdowns, repairs, and full replacements.
Signs You Need Swamp Cooler Service
- Cooler runs but doesn't noticeably lower temperature
- Water pump not working (water not flowing to pads)
- Pads are old, stiff, or mineralized (Denver's hard water accelerates this)
- Motor making grinding or squealing noises
- Water leaking from the unit
- Musty or mineral smell when cooler is running
- Cooler hasn't been started up or shut down for the season properly
What to Expect
- Spring startup
We install fresh pads, check the water pump and float valve, inspect the motor and belt, clean the reservoir, and run a test cycle. Most startup visits take 45-60 minutes.
- Fall shutdown
We drain the water lines (critical to prevent freeze damage in Colorado), winterize the unit, and cover or close off the duct to prevent cold air infiltration.
- Repair
From a failed pump to a burned-out motor, we diagnose and repair on-site. Most parts are available same-day.
- Replacement
If your unit is beyond repair or you want to upgrade capacity, we handle full swamp cooler replacements.
Our Commitment to You
Flat Rate Pricing
You get a price before we start any work. No hourly surprises, no hidden fees.
Free Estimates
Free in-home estimates on all installations. No obligation to move forward.
10-Year Warranty (New Equipment)
All new installations include a 10-year extended parts warranty plus our 5-year workmanship warranty.
24/7 Emergency Service
HVAC doesn't break on schedule. We answer calls around the clock.
What Our Customers Say
"We needed evaporative cooler repaired. After being ignored by several companies, Angie's List referred us to Lou. Contacted us right away, set up an appointment, was timely and was outstanding at communication both digitally and in-person. Our problem was diagnosed, repaired and for a reasonable price. We will certainly use Lou in the future."
Swamp Cooler FAQs
When should I switch from my swamp cooler to AC?
When the outdoor dewpoint hits 55°F or higher (any weather app shows it). In Denver that's typically mid-July through August during monsoon weeks. Spring, early summer, and fall are reliable swamp-cooler season.
How much does swamp cooler startup cost?
Spring startup typically runs $150-$300 in Denver: new pads, water pump check, motor inspection, reservoir clean, full test cycle. Most startups take 45-60 minutes. Fall shutdowns are similar in scope and price.
Why is my swamp cooler not cooling well?
Usually one of: old or mineralized pads (Denver's hard water accelerates this), a failed water pump, a clogged float valve, or low water flow. We diagnose and fix on the spot in most cases — most parts are stocked.
Can you replace my swamp cooler?
Yes — if your unit is beyond economical repair or you want larger capacity, we handle full swamp-cooler replacements including ductwork modifications and electrical when needed.
Related Services
AC Repair
Fast diagnosis and honest repair for any AC system in the Denver metro.
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Maintenance
Seasonal tune-ups that prevent breakdowns and extend equipment life.
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