Indoor Air Quality Services in Orange County
Dust from the Santa Ana winds, wildfire smoke, pollen, pet dander and a damp AC coil all end up in the air your family breathes. We install three proven whole-home upgrades on the system you already own, at a flat price you see before we start.
Get a fast free quote
Same-day response on most requests. No obligation.
$89 Furnace Tune-Up in Orange County
Regularly $129. A full furnace inspection, cleaning and safety check before the first cold night. No plan or membership.
Replacing your system? $1,000 off a new high-efficiency system (17 SEER or higher).
For a faster response, text. Limited time. Cannot be combined with any other offer.
Three ways to clean the air in your home
Each one does a different job. Most homes need one or two, not all three, and we will tell you which.
Better filtration
A properly sized media filter cabinet or the right MERV pleated filter captures dust, pollen and pet dander before they recirculate. The foundation for everything else.
Whole-house air purifier
An in-duct purifier that treats the air and surfaces in every room, not just what passes through a filter: dust, odors, smoke, pet smells and germs.
UV light for your AC or furnace
A UV-C lamp with carbon cells mounted at the indoor coil. Keeps the coil free of mold and biofilm and cuts the musty smell that comes with it.
Which one do you need? Start with the symptom
| What you notice | Most likely cause | What fixes it |
|---|---|---|
| Dust on everything days after cleaning | 1-inch filter, leaky return ducts in the attic, Santa Ana wind dust | Media filter cabinet + duct sealing; purifier if it is still dusty |
| Sneezing, itchy eyes, worse at home than outside | Pollen and pet dander recirculating | MERV 11–13 filtration + whole-house purifier |
| Musty or "dirty sock" smell when the AC starts | Mold and biofilm on the wet evaporator coil | Coil and drain-pan cleaning ($550–$750) + UV light to keep it clean |
| Cooking, pet or smoke odors that linger | Odors and VOCs that filters cannot catch | Whole-house purifier; UV with carbon cells also helps |
| Rooms that are stuffy or uneven | Airflow, not air quality: undersized return, dirty blower, leaky ducts | Airflow correction ($250–$350), duct sealing, tune-up |
Do the cheap things first
We would rather you spend $30 on the right filter than $1,295 on a purifier you did not need. In order:
- Use the right filter and change it on time. MERV 11 for most homes, MERV 13 only if your system can handle it. Our MERV 8 vs 11 vs 13 guide explains the trade-off.
- Seal leaky ducts. Attic ducts in older Orange County tract homes pull in attic dust and insulation fibers every time the blower runs. Duct sealing is quoted after we look.
- Get the coil and blower cleaned. A dirty coil is both an airflow problem and an air quality problem. Part of our $129 tune-up inspection ($89 this fall).
- Then add equipment that matches the symptom above.
Why Orange County air needs more than a filter
- Santa Ana winds push fine desert dust into every gap in the house from fall through winter.
- Wildfire smoke season overlaps with the hottest weeks, when the AC runs most. Smoke particles are small enough to pass a cheap filter.
- Coastal humidity in Newport, Laguna, Dana Point and San Clemente keeps the coil wet longer, which is where musty smells start.
- Closed-up homes. Modern windows and weather-stripping keep conditioned air in, and whatever is in the air stays in with it.
Flat-rate prices
| Service | Price | Notes |
|---|---|---|
| Whole-house air purifier (Dust Free Active Gold) | $1,295 | Installed on your existing system. Current offer: $250 off whole-home air purification on qualifying systems. Included free with every Best-tier system from our instant pricing. |
| UV light with carbon cells (Fresh-Aire UV) | $1,195 | Installed at the indoor coil. |
| Media filter cabinet (4–5 inch) | Quoted on site | Depends on your return and the space at the air handler. |
| Coil and drain-pan cleaning | $550–$750 | For a coil that already has growth or a clogged pan. |
| Filter and airflow correction | $250–$350 | Wrong filter, blocked return, restricted airflow. |
| Furnace or AC tune-up | $129 ($89 fall special) | Includes coil, blower and drain inspection. |
| Diagnostic visit | $79 | Waived when you go ahead with the repair. |
| Duct sealing or repair | Quoted after inspection | Flat price, before any work starts. |
Indoor air guides
- MERV 8 vs 11 vs 13: which filter to use
- Why does my AC smell musty?
- Wildfire smoke and your HVAC in Orange County
- Do you need a whole-house humidifier in Orange County?
Frequently asked questions
What is the difference between a filter, an air purifier and a UV light?
Do I need an air quality test first?
Will these work with my existing system?
How much does it cost to improve indoor air quality?
Do air purifiers or UV lights produce ozone?
Will better air quality help with allergies and asthma?
Do you offer a maintenance plan for air quality equipment?
Related: Whole-house air purifier · HVAC UV light · Air filtration & media cabinets · Air scrubbers · Duct sealing · Furnace tune-up ($89 fall special)
Want cleaner air in every room?
Call or text (949) 933-3130; for a faster response, text.
Helpful HVAC Terms
Quick definitions for the parts and terms behind your comfort system.
Current specials & offers
Furnace Safety Tune-Up
New System Quote
Whole-Home Air Purification
What your neighbors say
I cannot thank South County Air Services enough for impeccable customer service. Behshad came out on a Saturday to check my heating unit (failing motor). He was professional, knowledgeable, courteous and thorough – extremely fair pricing, with open and honest communication. Highly recommend. Five star plus!
Super impressed with our experience. We needed to replace our 40+ year old furnace, and from the first call everything was easy and clearly explained. Responsive, great follow-up, great pricing, timely booking, installers on time and prepared, clean install, no mess left.
I am grateful to the technician who inspected my HVAC system today. I feel he did a thorough inspection and told me the truth about my unit. I had two other companies beforehand – the first gave me a report that would call for major expenditure.
You will not find a more honest and knowledgeable HVAC tech. They show up on time and are very professional, but most of all will not try to upcharge you. He could have charged me significantly more but cares about diagnosing the actual problem. I found my HVAC tech – 10 star review if I could!
It’s not often you find an honest business willing to give suggestions over the phone to troubleshoot why my HVAC wasn’t working – without charging me. After a couple minutes we determined my breaker popped and all I needed was to reset it. I appreciate Behshad and will definitely use him in the future.
I spoke with the owner on a Saturday morning and he was at my house within 45 minutes. Another company wanted $3,000 in repairs; Behshad recommended a simple $250 repair that fixed the issue. Very honest, thorough, and reliable!
I cannot thank South County Air Services enough for impeccable customer service. Behshad came out on a Saturday to check my heating unit (failing motor). He was professional, knowledgeable, courteous and thorough – extremely fair pricing, with open and honest communication. Highly recommend. Five star plus!
Super impressed with our experience. We needed to replace our 40+ year old furnace, and from the first call everything was easy and clearly explained. Responsive, great follow-up, great pricing, timely booking, installers on time and prepared, clean install, no mess left.
I am grateful to the technician who inspected my HVAC system today. I feel he did a thorough inspection and told me the truth about my unit. I had two other companies beforehand – the first gave me a report that would call for major expenditure.
You will not find a more honest and knowledgeable HVAC tech. They show up on time and are very professional, but most of all will not try to upcharge you. He could have charged me significantly more but cares about diagnosing the actual problem. I found my HVAC tech – 10 star review if I could!
It’s not often you find an honest business willing to give suggestions over the phone to troubleshoot why my HVAC wasn’t working – without charging me. After a couple minutes we determined my breaker popped and all I needed was to reset it. I appreciate Behshad and will definitely use him in the future.
I spoke with the owner on a Saturday morning and he was at my house within 45 minutes. Another company wanted $3,000 in repairs; Behshad recommended a simple $250 repair that fixed the issue. Very honest, thorough, and reliable!
Comfort now, pay over time.
$0 down and flexible monthly financing available on qualifying systems, with approved credit.
Let’s make your home comfortable again.
Same-day service from certified local pros — open Mon-Sat.