HVAC Service in Portola Springs & Great Park

HVAC Care for Irvine's Newest Communities

One Season is family-run and based on Irvine Center Drive, about 8 minutes from both communities. We service the builder-grade systems these homes came with, and we handle the first replacements as the earliest tracts come of age.

Book a Free Estimate Call (949) 590-3296

Local & Reliable

Your Neighbors’ HVAC Company. Not a Call Center

One Season Heating & Air Conditioning is a family-run company headquartered at 7700 Irvine Center Drive, in the same 92618 zip code as Portola Springs and the Great Park Neighborhoods. 63 households here have hired us for 124 jobs, most of them service calls and maintenance visits on the builder-installed systems these homes came with. Owner Chad keeps it simple: show up fast, fix what is broken, and be straight with you about when a system is worth replacing.

124

jobs completed in the 92618 zip

5 Stars

From 300+ Verified Google & Yelp Reviews

8 Min

Drive Time From Our Irvine Shop

Local Knowledge Matters

What We See in Portola Springs & Great Park Homes

Portola Springs and the Great Park were built street by street over the last two decades, so their heating and cooling equipment ages in waves. Census data counts more than 17,000 homes in the 92618 area built in 2010 or later, the biggest concentration of newer homes in Irvine. Here is what we actually see on calls across the area.

First homes built 2006 to about 2012

Portola Springs, original tracts

These streets hold the oldest equipment in the community, and original builder-grade systems here are at or past the age where compressors, motors, and heat exchangers wear out. This is where most repair-or-replace conversations start, and where high-efficiency and heat pump retrofits make the biggest difference.

Built from the mid-2010s into the 2020s

Portola Springs, later phases

Much of the community went up in these years, so systems are mid-life: past the break-in period, not yet at the end. Our visits here run to tune-ups, refrigerant and airflow checks, warranty-preserving maintenance, and package unit service where one outdoor cabinet handles both heating and cooling.

The first Great Park homes, 2013 into the mid-2010s

Pavilion Park and Beacon Park

The Great Park side started here, and its earliest homes have now crossed the 10 year mark. Parts warranties are expiring, so we see the first major repairs and the first owners choosing a higher-SEER replacement instead of patching an original unit.

Built from the late 2010s to today

Cadence Park, Novel Park, Rise Park, and Solis Park

In the newest districts most equipment is still under manufacturer warranty. Our work here is the maintenance that keeps that coverage valid, smart thermostat setups, and ductless mini splits for ADUs, casitas, and bonus rooms the main system never reached.

Preventing Unexpected Breakdowns

Knowing when your block was built tells us what’s coming, so we fix it before you’re without AC in a 95° week.

Schedule a Preventative Inspection

What We Do

HVAC Services in Portola Springs & Great Park

From emergency repairs to high-efficiency system replacements, we deliver real solutions backed by real warranties.

AC Repair

Fast diagnosis and same-day fixes when your system stops cooling. We carry parts for all major brands.

SCHEDULE REPAIR

AC Installation

Right-sized, high-efficiency replacements backed by a 10-year warranty. We optimize air flow, not just equipment.

GET A FREE QUOTE

Furnace & Heating

Repairs and installs that keep up with cold nights. Ensure your heating is safe and efficient.

SCHEDULE HEATING SERVICE

Maintenance Plans

Twice-yearly tune-ups that head off mid-summer breakdowns. Season Pass Membership includes repair discounts.

VIEW MEMBERSHIP DETAILS

24/7 Emergency Service

A real technician dispatched any hour, any day of the year. When the heat hits, we answer.

CALL EMERGENCY LINE

Need Quick HVAC Help?

Book your appointment online instantly or call us directly to get an expert scheduled.

Call (949) 590-3296

Every Portola Springs & Great Park Neighborhood

We serve every corner of both communities, from the Portola Springs foothill tracts below Loma Ridge to the districts ringing the Orange County Great Park, plus the gated Altair community next door. Our shop on Irvine Center Drive shares your zip code, so help is a short local drive away, not a dispatch radius.

Las Colinas

Serra

Sendero

Ironwood

Pavilion Park

Beacon Park

Cadence Park

Rise Park

What We Stand For

Our Core Values

Honest Communication

No jargon, no hidden agenda, clear explanations and straight answers.

Zero Upselling

Our technicians are never paid to upsell. You get what your home needs.

Punctuality & Respect

On-time arrival, shoe covers on, and your property treated with care.

Upfront Pricing

You approve a clear, flat-rate cost before any work begins.

Guaranteed Workmanship

10-year parts, 2-year labor, and a 6-month follow-up on installs.

Community First

A local Orange County business, invested in the neighborhoods we serve.

Proven Results

Recent Jobs Around Portola Springs & Great Park

Irvine 92618 • Package Unit Install

Installed two package units for the same homeowner, a year apart. Repeat business is the best review.

Irvine 92618 • Condenser Install

New condenser installed mid-summer, restoring full cooling for the hottest stretch of the year.

Irvine 92618 • Mini Split Install

Added a ductless mini split to cover space the main system never reached.

Serving Every Portola Springs & Great Park ZIP Code

92618

Call (949) 590-3296

Quick Dispatch Guarantee

GPS-tracked technicians routed across South OC
Fully stocked vehicles, most repairs done first visit
No dispatch fees with completed repairs

Our technicians are strategically routed across South Orange County, meaning we usually have someone minutes from your door.

Customer Reviews

63 of your neighbors in 92618 have brought us into their homes. Here is what homeowners around Portola Springs and the Great Park say about working with us.

Our shop is at 7700 Irvine Center Dr in Irvine, only about a 8-minute drive to the heart of Portola Springs & Great Park. We can usually get out same-day, next-day at the latest. Summertime we can get booked out quick, so call (949) 590-3296 and get our live schedule availability.

Excellent experience, Aubrey was able to thoroughly test our system & fix it quickly, highly recommend!

Sandeep Kumar
March 20, 2026

I vet companies that I deal with as thoroughly as possible. One Season Heating & Air-conditioning Are former SoCal Air Flow Pro's from Chad the Owner To Aubrey a lead Tech, Rebecca ( Office Manager) & Sydney (Customer Service) always exceeding my high expectations. Rebecca the office manager was super responsive to my requests/ questions. She never dismissed any of my extra concerns, and even made sure that they were addressed to my utmost satisfaction. Sydney in Customer Service possesses professionalism and a great interpersonal skill set which IMO - a true asset for the One Season Team Tysm Rebecca & Sydney ! Aubrey the lead technician is very experienced and skilled. He showed up during the time range provided to me, and called beforehand to provide me with an ETA. He even put on booties when entering my house! Also, I find the entire One Season Team to be trustworthy. They never tried to upsell or fear monger like Triton or Goettle who used their Acquisition of SoCal Air Flow Pro's to gain entry into my home to try and sell me plumbing and inspection services (Customer Beware!). I schedule for a HVAC check up and they send me a plumber who states the HVAC associate will call in a few days and bever did! One Season is a unicorn in today's service business: exceptional and skilled employees, honesty and fair pricing that does not prey on homeowners at their moment of vulnerability. Wholeheartedly recommend!!

Alan Szarowicz
February 28, 2026

One Season saved the day yet again! Daniel and Peter were thoughtful, thorough, and respectful and the work is outstanding! Thank you!

Hope Shimizu
February 12, 2026
Great company that was referred to me in 2024 by a good friend. Used them to install new ductwork, routine system inspection and may continue to use them in the future as needed!

Koley Anthony
January 13, 2026

One Season Heating and Air Conditioning was fantastic from start to finish. We have two HVAC systems at our home, and one of them hasn’t been operating. Aubrey came out and helped diagnose the issue thoroughly—there’s a leak somewhere in the refrigerant line, and with refrigerant costs being so high, we were worried this would turn into an expensive “quick fix.” Instead, Aubrey took his time, explained what he was seeing, and came up with a really thoughtful solution. There was absolutely no pressure and no sense of a money grab—just honest guidance from someone you can tell genuinely cares about helping people. If you’re looking for an HVAC company that’s professional, transparent, and truly customer-focused, I highly recommend One Season Heating and Air Conditioning (and ask for Aubrey!).

David Revere
January 27, 2026

The company I give five stars. Excellent response and follow through with great communication from their office. The technician I give six stars. Very knowledgeable, fast, friendly and a great communicator advising me on the condition of my equipment and what I might expect going forward.

Dennis Toussieng
March 20, 2026
These guys are the real deal. Honest. Reliable. We had a big HVAC issue that they solved timely. We felt fully taken care of and would absolute recommend this company.

Dan D.
February 19, 2026

I have used many AC companies over my years but none have been as complete in their Preventative Maintance as One Season Heating and Air. They are the only company that I will use Thank You

l g
January 9, 2026

Daniel awesome He took time to explain the process and his findings My unit is older and the filter is not a common size. He took time to go purchase one. Best of all he did not try to sell me a new unit. He was courteous and answered all my question I will continue to use this company and request Daniel

Lourdes Maria de Varona
February 25, 2026

CA License #1038022 5 Stars · 300+ Google & Yelp Reviews 10-Year Parts Warranty 100% Satisfaction Guarantee

Good Questions, Straight Answers

Our Portola Springs home was built in the late 2000s and still has its original system. Repair or replace?

At 15 to 20 years old, an original builder-grade system is at the age where major parts start failing one after another. If this is your first small repair, fixing it can make sense. If repairs are stacking up, or the failed part is a compressor or heat exchanger, replacement is usually the smarter path, and current high-efficiency and heat pump equipment uses noticeably less energy. We will give you an honest read either way.

My Great Park home just passed 10 years. Is my HVAC still under warranty?

Most manufacturer parts warranties run 10 years, but only if the equipment was registered, and labor coverage is usually much shorter. Homes in Pavilion Park and Beacon Park are right at or past that line now. We can pull the serial numbers on your system, tell you exactly where you stand, and document maintenance so any remaining coverage holds up.

Can you add heating and cooling to an ADU, casita, or bonus room?

Yes. A ductless mini split serves one room or a whole ADU without tying into your main ductwork, and each zone gets its own thermostat. They are quiet, efficient, and a clean fit for the newer floor plans in these communities. We install them regularly in 92618, including one in summer 2026.

Do I need HOA approval to replace an AC unit in these communities?

Both are HOA communities, and many associations want notice or approval when outdoor equipment changes size, location, or appearance. A like-for-like swap in the same spot is usually simple, but do not assume. We place and screen equipment to respect sight lines and noise rules, and we can supply the spec sheets your association asks for.

Every home on our street went up the same year. Why does that matter for my AC?

When a whole tract is built at once, its systems tend to wear out at once, usually during the first long heat wave. That is when repair schedules across Irvine fill up fastest. Planning ahead beats waiting for the cluster: regular maintenance stretches equipment life, and Season Pass members get priority scheduling when demand spikes.

Get in Touch

Get Same-Day HVAC Service in Portola Springs & Great Park

Call now and talk to a real person, or book online and we’ll confirm your arrival window within minutes.

(949) 590-3296 · 24/7 Emergency Line

7700 Irvine Center Dr #800, Irvine, CA 92618

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