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West Coast Heating Air Solar & Plumbing
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West Coast technician holding a dirty air filter next to a clean new one beside an open furnace
Our guarantee100% Satisfaction Guarantee

Indoor air quality: filtration, purification and humidity control

Breathe Easy.
Live Better.
West Coast installs and services air filtration, whole-home air purifiers, humidity control and ventilation for homes across San Diego County, 7 days a week. There’s no service call fee when you choose us for the work.
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     Five-star rated on Google, Yelp, Facebook and BBB
 
Same-day serviceOn most services, 7 days a week
 
Lifetime labor warrantyOn qualifying installs and repairs
 
All brands and modelsWhatever you have, we work on it
 
No service call feeWaived when we do the repair
What we do

Filtration, purification and humidity control

Most indoor air problems are solved by adding on to the heating and cooling system you already have.
Signs your air needs attention  
West Coast technician showing a homeowner her options on a tablet in her kitchen 

Air filtration

Upgraded filters and whole-house filtration catch the fine dust, pollen and pet dander a standard filter lets through.
Air filtration systems  
West Coast technician shaking hands with a homeowner at his front door 

Air purification

A whole-home air cleaner kills germs and removes odors and chemical fumes as air moves through your ducts.
Whole-home air purifiers  
West Coast technician measuring airflow at a floor vent while the homeowner watches 

Humidity control

Whole-house dehumidifiers and humidifiers keep moisture in check, so your home feels fresh, not musty or dry.
Ask about humidity control  
Symptoms

Signs your indoor air needs attention

What homeowners notice most often before they call us about their air.
Homeowner relaxing on her couch next to an indoor air quality monitor
 90%of our time is spent indoors, according to the EPA
 
Dust comes right back after you cleanYour filter isn’t catching fine particles, or a leaky return duct is pulling dust in
Call soon  
 
Allergy symptoms that seem worse at homePollen, pet dander and fine dust circulating through your ducts
Book a visit  
 
A musty smell in the houseToo much moisture indoors, which lets mildew and mold grow
Call soon  
 
Condensation on windows, or rooms that feel dampIndoor humidity is too high, or the house isn’t getting enough fresh air
Call soon  
 
The air filter turns gray within a few weeksA lot of dust in the air, or a filter that’s the wrong size or type
Check first  
 
A carbon monoxide alarm, or a gas or burning smellLeave the house and call 911 or your gas utility from outside
Get out first  
See all 12 signs and what they mean  
 
Stuffy, stale air in closed-up roomsNot enough fresh air coming in, or stale air going out
Book a visit  
 
Static shocks, dry skin or dry, cracking woodIndoor air that’s too dry, often during dry fall and winter weather
Book a visit  
 
Dust or debris blowing out of the ventsDirty or damaged ductwork, or a filter that doesn’t fit its slot
Call soon  
 
Cooking, pet or paint odors that lingerChemical gases and fumes that a standard filter can’t catch
Book a visit  
 
Some rooms dustier or stuffier than othersBlocked vents, leaky ducts or weak airflow to those rooms
Check first  
 
Mold or mildew spots near vents or ceilingsA moisture problem. Please don’t disturb it to get a closer look.
Call soon  
Before you call

Check these before you call

These five checks are safe for anyone, and they’re the first things your technician will look at too. Write down what you find. It helps us narrow the problem quickly.
1  

The air filter

If you can’t see light through it, replace it. The size is printed on the frame.
2  

The vents and return grilles

Open, clean, and not blocked by furniture, rugs or curtains.
3  

The thermostat fan setting

On Auto, air only passes through the filter while heating or cooling runs.
4  

Your exhaust fans

Bathroom and kitchen fans turn on and pull air. Run them when you shower and cook.
5  

Your humidity reading

Many thermostats show indoor humidity. Note the reading and when it feels damp or dry.
  
If a carbon monoxide alarm sounds or you smell gas, leave the house and call 911 or your gas utility from outside. Please don’t disturb suspected mold, unknown residue or damaged duct insulation to get a closer look. Tell us what you saw and we’ll take it from there.
West Coast technician holding a dirty air filter next to a clean new one beside an open furnace 
Problems we fix

Common indoor air problems we fix

Here are the problems we solve most often, in plain terms.
 
98%of indoor air particles are smaller than 1 micron
 5 micronsis about the smallest particle even a high-quality furnace filter can trap
 130 pintsof moisture a day a whole-house dehumidifier can pull out of your air
 

Dust that comes right back

A standard filter lets fine dust, pollen and pet dander slip through, and a leaky return duct can pull in more. We upgrade your filtration and check the ductwork that feeds it.
 

Musty smells and damp air

Too much moisture lets mildew and mold grow and leaves the house smelling musty. A whole-house dehumidifier works with your HVAC system and can remove as much as 130 pints of moisture a day.
 

Stale, stuffy air

A tightly closed home traps cooking odors, stale air and fumes. A ventilation system brings fresh outdoor air in and sends indoor air out, and some models trade heat and moisture along the way.
Every home is different. Your technician prices the fix on site, itemized, before any work begins.
More indoor air problems we fix  
 

Germs and allergens in the air

Filters catch particles. They don’t kill germs. A whole-home air cleaner with a germ killer treats the air as it moves through your ducts, every time the system runs.
 

Odors and chemical fumes

Fumes from cleaners, paint, new furniture and cooking are gases, so a filter can’t catch them. Our highest level of air cleaning removes chemical gases and fumes along with particles and germs.
 

Dirty or damaged ductwork

Debris blowing from a register, or construction, pests or a leak near the ducts, can mean the ductwork needs attention. We look first, and recommend cleaning or repair only if it fits what we find.
Pricing

What does indoor air quality service cost?

It depends on what your home needs, from a better filter to a whole-house system. Your technician gives you the exact price before any work begins.
$0service call, waived when you choose us for the work
10%off repairs for West Coast Club members
Every home is different, and so is every air quality fix. What your project costs depends on your equipment, your ductwork and the problem you want solved. Your technician prices it on site, with labor and parts listed separately, for you to approve before any work begins. Financing is available on approved credit.

How True Transparency Pricing works

Most home service companies quote one flat price that bundles labor and parts together, so you can’t see what the part costs. We list them separately.

West Coast

Furnace control board replacement
Labor$229
Part$193
Service fee$0
Total$422

Typical company

Same repair, flat rate
Service fee$99
Laborbundled
Partbundled
Total$618
A real example from our pricing page. Our parts are priced close to what you’d find online, so if you look one up, the number will make sense. A second repair on the same visit is up to 50% off.
West Coast Heating Air Solar & Plumbing service van 
Service call
$0 
when we do the repair
Your service call fee is waived when you choose us for the repair while the technician is there. West Coast Club members pay no service call fee when work is performed.
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Current offers

More ways to save on indoor air quality service

Take advantage of our latest offers and get even more value from West Coast.

Water Heater Special

$500 Off
Any Water Heater Installation

On a new water heater installation. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

New Customer Special

$79 AC
Tune-Up
& Safety Inspection

New customers only. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

Comfort & Peace of Mind

Lifetime Warranty
On Labor

Qualifying system installs and repairs. Transferable. Terms apply. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

New Customer Special

$29 Heating
Tune-Up
& Safety Inspection

New customers only. Extends system life, improves efficiency, prevents costly repairs. Mention this offer when booking. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

Financing Available

0% Interest
For 24 Months

On qualified equipment. On approved credit. Details at consultation. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

Fall Savings

$1,500 Credit
A/C Trade-In

Toward a new A/C system. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189

First Visit Special

Free Service Call
With Any Repair

$0 dispatch fee with any completed repair. First-time customers only. Cannot be combined with other offers. Must be presented at time of sale. Expires 10/31/26.

Call (619) 349-4189
Repair or replace

When to repair, when to replace

Most indoor air equipment adds on to the heating and cooling system you already have, so one problem rarely means starting over. If a part fails, we repair it. If the equipment is worn out or no longer fits the problem, we talk through replacing it.
3–5 yearstypical life of a portable dehumidifier
5–10 yearstypical life of a whole-house dehumidifier that works with your HVAC system

Three levels of whole-house air cleaning

  1. Level 1Particle removal
  2. Level 2Particle removal and germ killer
  3. Level 3Particle removal, germ killer, and chemical gas and fume removal
Your technician matches the level to the problem you want solved and to how it fits your system.
What we weigh before recommending either
Age. A whole-house dehumidifier typically lasts 5–10 years, a portable one 3–5. Repair history. Equipment that keeps failing is telling you something. Fit. A filter, purifier or dehumidifier should match your system and the concern it’s meant to fix. Upkeep. Most indoor air equipment needs very little care, as long as filters are changed and condensate water drains properly. Your HVAC system. If your heating or cooling equipment is due for replacement, it can make sense to add air quality equipment at the same time.
Financing is available on approved credit. See financing, or ask us about your home.
A craftsman-style home at dusk with warm glowing windows
Your visit

What happens when our technician arrives

  1. We arrive ready to workLicensed, insured, and respectful of your home.
  2. We show you what we foundYou see the problem and hear what it means in plain language.
  3. You see the price firstYour options, with labor and parts listed separately, before any work begins.
  4. We do the work, test and clean upWe test the system before we leave and clean up the space.
Every repair is backed by our lifetime labor warranty on qualifying repairs and our 100% Satisfaction Guarantee. If anything isn’t right, call us and we’ll make it right.
West Coast technician holding a dirty air filter next to a clean new one beside an open furnace
Maintenance

Indoor air quality maintenance

Filters load up, drains clog and air cleaners need attention. Most indoor air equipment needs very little care, as long as it gets that care on schedule. In an indoor air quality check, your technician:
  •  Checks or replaces your air filter and filtration media
  •  Cleans and inspects your air cleaner or purifier
  •  Checks your dehumidifier or humidifier and clears its condensate drain
  •  Inspects the ductwork and return grilles for dust and leaks
  •  Checks airflow at the vents
  •  Walks you through what we found, in plain terms
Filter, ductwork and airflow checks are part of every West Coast Club HVAC visit.
Why West Coast

Why homeowners choose West Coast

Family-run since 1996, serving San Diego County homeowners from El Cajon.
5-starrated on Google, Yelp, Facebook and BBB
Since 1996family-run in San Diego County
Same dayrepairs on most services, 7 days a week
Lifetimelabor warranty on qualifying installs and repairs
West Coast Heating Air Solar & Plumbing service van
 100% Satisfaction Guarantee
     
“Vlad was incredible! He was on time, the ultimate professional, knowledgeable, patient with my questions, and went above and beyond to make sure my service was impeccable!”
Nancy Scornavacco, Google review
     
“Amazing service! Eric with West Coast did a fantastic job. Very prompt, immediately diagnosed the issue I was having and offered varying solutions to ensure I have a comfortable option.”
Tim Palmer, Google review
     
“Eric Young did a great job of explaining the possible solutions to my HVAC problem. I felt very comfortable and was so pleased to feel like I had options, with no effort to “hard sell” me.”
Susan Little, Google review
FAQ

Indoor air quality FAQ

What does indoor air quality service include?
It can include an assessment, upgraded filtration, a whole-home air purifier, humidity control, fresh-air ventilation or duct cleaning. One product doesn’t fix every air problem, so we start with what you notice in your home and work from there.
Is there a service call fee?
We waive it when you choose West Coast for the work while the technician is at your home. West Coast Club members pay no service call fee when work is performed.
Will a better furnace filter fix my air?
It can help, but filters have limits. About 98% of the particles in indoor air are smaller than 1 micron, and even a high-quality furnace filter can’t trap particles much smaller than 5 microns. A more restrictive filter isn’t right for every system either. Your technician will tell you what your system can handle and whether whole-house filtration or an air purifier makes more sense.
What’s the difference between an air purifier and ventilation?
An air purifier cleans the air already in your home as it moves through your ducts. A ventilation system brings fresh outdoor air in and sends stale indoor air out. For dust, pollen or germs, a purifier is the usual fix. For stale air or lingering odors in a closed-up house, ventilation is often the better answer.
Do I need a whole-house dehumidifier?
If your home feels damp or sticky, smells musty, or gets condensation on the windows, it may. A whole-house dehumidifier works with your HVAC system, can remove as much as 130 pints of moisture a day, and helps prevent mildew and mold. Drier air also protects wood floors, furniture and paint, and lets your cooling system work less hard. If your air is too dry instead, a whole-house humidifier adds moisture back.
Will an air purifier help with allergies?
Cleaner air means less dust, pollen and pet dander moving through your home, and many homeowners notice the difference. HVAC equipment can’t diagnose or treat a health condition, though, so talk to your doctor about symptoms. Any equipment we recommend will fit your system and come with the manufacturer’s own performance documentation.
More questions
Is duct cleaning always the answer to visible dust?
No. Visible dust can come from more than one source, and duct cleaning doesn’t fix every air quality concern. Tell us where the dust appears, how fast it comes back, and whether it’s coming out of a register. If there’s been construction, a water leak or pests near the ducts, mention that too. We recommend cleaning only when it fits what we find.
Can you tell what’s in my air from dust or a smell?
Not from a description alone. Dust, odors, condensation or visible residue help us decide where to look, but they don’t identify what’s in the air. If testing makes sense, we’ll explain what the test measures and what it can’t tell you before it starts.
What are the levels of whole-house air cleaning?
There are three. Level 1 removes particles like dust and pollen. Level 2 removes particles and adds a germ killer. Level 3 removes particles, kills germs, and removes chemical gases and fumes. Your technician matches the level to the problem you want solved.
How long does a whole-house dehumidifier last?
Most last about 5–10 years. Portable units typically last 3–5 years, which is why a whole-house unit is often the more cost-effective choice. The main upkeep is making sure its condensate water drains properly.
Does cleaner air help my heating and cooling system?
Yes. A clean system runs closer to peak efficiency, which eases the workload on its parts and helps it last longer. Cleaner, more efficient equipment can also lower your utility bills.
Is there a warranty on indoor air quality work?
Yes. We back qualifying installs and repairs with a lifetime labor warranty. Some exclusions apply, and your technician will explain them. Our 100% Satisfaction Guarantee means you don’t pay for service you’re not happy with.
What should I ask before choosing air quality equipment?
Ask what concern the equipment is meant to address, how it works with your existing HVAC system, what maintenance it needs, and which performance claims the manufacturer supports for that exact product.
What should I do if I suspect gas or carbon monoxide?
Leave the house and call 911 or your gas utility from outside. Don’t wait for a routine appointment. Once the area is safe, we can check your equipment.
What should I tell West Coast when I call?
Tell us which rooms are affected, when the problem started, and whether it changes when the heating or cooling runs. Mention any recent leaks, construction, new furniture or flooring, pests, filter changes or equipment work. If you have filters, air cleaners or humidity equipment, have the brand or model handy.
Reviewed by the licensed HVAC team at West Coast Heating Air Solar & Plumbing. CSLB License #810930. Last updated October 2026.
West Coast Club membership card

The West Coast Club covers all of this

Plans from $10 a month. Pick the systems you want covered and it pays for itself on the first visit.

  • Annual tune-ups on heating, cooling, solar or plumbing
  • 10% off all repairs
  • $0 diagnostic fees and priority scheduling
  • $100 annual replacement credit
Join The Club
Service areas

Where we provide indoor air quality service

We serve homes and businesses across San Diego County from our El Cajon location.
Central & East County
San Diego, El Cajon, La Mesa, Santee, Lakeside and Poway
Also serving Lemon Grove, Spring Valley, Alpine, Ramona
North County
Escondido, San Marcos, Vista, Oceanside, Carlsbad and Encinitas
Also serving Cardiff, Solana Beach, Del Mar, Rancho Santa Fe, Fallbrook, Bonsall, Valley Center
South Bay & Coast
Chula Vista, National City, Coronado and La Jolla
Also serving Bonita, Imperial Beach, San Ysidro
Map of West Coast's San Diego County service area
N
West Coast technician with the West Coast bear mascot

Air feeling stale?
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