24/7 Emergency Service
AC dies at 11pm in August? Call us. We answer every call, day or night. No third-party call center.
Same-day service · Orange County
Cool House by Tonight
Same-day AC repair across Orange County. Family-owned since 2008. Licensed, insured, and ready to roll.
Family-owned since 2008 · CA Lic. #C20-PLACEHOLDER · No-surprise pricing
Average response
Under 2 hours
Today
12 jobs done
18+ years
Family-owned & local
5,000+
Jobs completed in OC
4.8★
487 Google reviews
CA Lic. #C20-PLACEHOLDER
Licensed, bonded, insured
What we do
HVAC service across Orange County, done right the first time.
From a 3am AC breakdown to a full system replacement — we handle residential and commercial work, with up-front pricing on everything.
AC Repair
Same-day diagnostics and repair. We carry parts for every major brand — Trane, Carrier, Lennox, Goodman, York.
Learn moreAC Installation
High-efficiency systems sized right for your home. Financing up to 60 months, 0% APR available.
Learn moreHeating
Furnace repair, heat pump install, and emergency winter service when the cold snap hits.
Learn moreMaintenance Plans
Twice-yearly tune-ups extend system life by 5+ years and slash energy bills by up to 30%.
Learn moreIndoor Air Quality
Whole-home filtration, UV purifiers, humidity control. Breathe easier — especially during fire season.
Learn moreCommercial HVAC
Restaurants, offices, retail. Rooftop units, RTU replacement, preventive service contracts.
Learn more
Why Coastline
Family-owned. Newport-based. Honest about the work.
Up-Front Pricing
You see the price before we start. No surprise add-ons, no inflated invoices, no high-pressure sales.
Family-Owned Since 2008
Three generations of HVAC pros, headquartered in Newport Beach. Your neighbors, not a national chain.
100% Satisfaction Guarantee
If you're not happy with the work, we fix it free. If you still aren't happy, your money back. Period.
Licensed, Bonded, Insured
California C20 contractor's license #C20-PLACEHOLDER. Fully bonded and insured for your peace of mind.
0% Financing Available
0% APR for 18 months on full system replacements. Same-day approval, no hard credit pull.
Service area
Serving all of Orange County.
Same-day appointments across coastal and inland OC. Headquartered in Newport Beach — average tech is at your door in under 90 minutes during business hours.
123 Coast Highway, Newport Beach, CA 92660
Cities we cover
- Newport Beach
- Costa Mesa
- Irvine
- Huntington Beach
- Laguna Beach
- Laguna Niguel
- Mission Viejo
- Lake Forest
- Tustin
- Santa Ana
- Aliso Viejo
- Dana Point
What homeowners say
4.8★ from 487+ Orange County homeowners.
“Our AC died at 8pm on a Friday in August — house was 92 degrees, baby was crying. Coastline had a tech at our door by 9:15pm and the system was running by 10:30. Unbelievable service.”
Jennifer M.
Newport Beach · August 2025
“Quoted me $4,200 less than a competitor for the same Trane system. The crew was professional, on time, and cleaned up better than my own house cleaner. 10/10.”
Mike T.
Costa Mesa · June 2025
“Have been on their maintenance plan for 6 years. They catch issues before they become emergencies and the price hasn't gone up once. Honest people doing honest work.”
Sarah K.
Irvine · April 2025
Get a free estimate
Tell us what's wrong. We'll text you back in 60 seconds.
Day or night, weekend or holiday — submit this form and a real technician (not a call center) texts you back to schedule. Average response under 2 minutes during business hours.
- No call center. Your text goes straight to an OC technician.
- Free, no-obligation estimate. Same-day appointments most weekdays.
- Up-front pricing. You see the number before we lift a wrench.
We never sell or share your info. Texts only about your service — reply STOP anytime.