★★★★★ 4.9 · 1,000+ Five-Star Reviews
Expert HVAC Services Fountain Valley, CA
Heating and air conditioning care for Fountain Valley homes. Courteous service from the family-owned team next door: our Costa Mesa headquarters and Huntington Beach office both border the city. NATE-certified and trusted since 1989.
4.9★ on Google · 1,000+ Five-Star Reviews · Since 1989 · CSLB #754456 · Financing Available
Fountain Valley’s Next-Door HVAC Company
Fountain Valley’s classic 1960s and 70s tract homes are some of our favorite houses to work on: generous single-story layouts around Mile Square Park, original ductwork that rewards a proper tune-up, and systems that fight the same marine-layer-mornings-hot-afternoons pattern we’ve serviced for three decades. A nice home deserves a system that keeps up quietly.
Klondike Air is local, family-owned and operated since 1989, with 1,000+ five-star reviews from Orange County homeowners, and Fountain Valley literally borders both our Costa Mesa headquarters and our Huntington Beach office. Courteous, NATE-certified technicians, written upfront pricing, and appointments that are easy to book.
Costa Mesa Headquarters
1308 Logan Ave, Ste E, Costa Mesa, minutes across the border from anywhere in Fountain Valley.
PHONE: (714) 465-5828
Serving Every Corner of Fountain Valley
From Mile Square Park to the Talbert corridor, our technicians are in these neighborhoods every week:
Everything Your Home’s Comfort System Needs
Air conditioning repair across Fountain Valley. Diagnosed fast, priced upfront, fixed right the first time.
Fast furnace and heat-pump repair for chilly marine-layer mornings on the coast.
Right-sized, quiet systems for Fountain Valley’s classic single-story tract homes. Free in-home estimates, financing available.
Seasonal coastal tune-ups that fight salt-air corrosion and keep energy bills in check. Gold Club members save 10% on repairs.
Duct sealing, replacement, and IAQ upgrades. The highest-payoff fix for original 1970s ductwork.
Marine Mornings, Hot Afternoons: the Fountain Valley Pattern
A few miles inland softens the salt, but Fountain Valley systems still ride the daily swing from damp marine-layer mornings to hot, dry afternoons, a cycle that works condensers and electrical components hard. We treat that as part of the job:
Corrosion & Moisture Checks
Condenser coils, fins, and electrical contacts inspected for moisture wear on every Fountain Valley visit.
Protective Coil Treatment
Where salt is taking hold, protective treatment and simple owner habits that slow it down.
Honest Repair-or-Replace Calls
Corrosion factors into every recommendation: you never pay to fix a unit the ocean has already claimed.

Protect your system year-round with the Gold Club Maintenance Plan →
Fountain Valley’s Ranch Homes Deserve Purpose-Built Comfort
Fountain Valley went up fast in the 1960s and 70s, block after block of well-built single-story ranch homes, and that shared history means the city’s HVAC problems rhyme from street to street. We have serviced these tracts for decades, and the patterns are so consistent we can often name the likely fault from the address and the symptom alone.
The classic S&S-era tracts. Most of these ranches came with a furnace in the garage or hallway closet and ducts run through a low attic. Fifty years on, those original ducts are the quiet efficiency killer: crushed runs and separated joints, wrapped in insulation so thin it surrenders cooling to a hot attic before it ever reaches a bedroom.
Green Valley. The association neighborhoods around the greenbelts and pools mix townhomes and single-family layouts, with association rules about where equipment can sit. We work within those rules and keep noise in mind, because shared spaces make a rattling condenser everyone’s business.
Around Mile Square Park. The homes ringing the park catch the afternoon marine breeze, which residents rightly love, but the pattern of cool mornings and hot late afternoons is exactly what oversized systems handle worst. Sizing the system correctly keeps the house comfortable through both halves of the day without the clammy, short-cycling feel.
A single-story ranch is also the cheapest floor plan in Orange County to fix properly, because the duct runs are short and the attic is easy to reach. Residential AC repair covers the urgent side. For everything else, heater maintenance keeps winters boring, and our piece on how a ductwork inspection cuts allergies and energy bills explains the fix these tract homes most often need.
What Your Neighbors Are Saying
★★★★★
“The team at Klondike, Chris and Richard, are always friendly, professional, respectable and willing to provide excellent service. Love them!”
Catherine Lynn Tolley · Verified Customer · Posted on Google
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