Typical Range
A
$450 – $2,800 installed
Most homes in Southwest Indiana land somewhere inside this band depending on what is already in the system and what needs to be added.
38.21°N · 87.57°W — Haubstadt, IN
Vol. 17 · No. 26 — A Field Guide to Comfort
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How much does an indoor air quality system cost.
If your house has dust on every flat surface, your allergies start when you walk in the door, or your basement smells musty in July — those are indoor air quality problems, and they have honest fixes. With a 75°F average summer dew point and 44 inches of annual rain, Southwest Indiana homes work harder than most against moisture, mold, and dust. Below is honest 2026 pricing for IAQ — from a real media filter (not the 1-inch throwaway) all the way to a full IAQ stack with humidity control. We will tell you straight which pieces actually move the needle for your home.
I
Quick Answer
The honest math, up front.
Real ranges from our 2026 install pricing. Updated as our distributor costs change.
Median Install
B
$1,200
The middle-of-the-road number — what a typical mid-range setup actually costs installed, not a teaser price.
01 / 03
Entry-level media filter cabinet
4- or 5-inch deep media filter cabinet installed at the return. Catches 10x more than a 1-inch filter, lasts 6–12 months, and you actually breathe the difference.
Low
$450
Median
$550
High
$700
02 / 03
Mid-range UV + premium filtration
Media filter cabinet plus a UV-C lamp at the evaporator coil to keep biological growth off the coil. The right combination for allergy and humidity-sensitive homes.
Low
$1,000
Median
$1,200
High
$1,500
03 / 03
Premium full IAQ stack with humidity control
Media filter, UV-C coil treatment, whole-home dehumidifier ducted into your return, and a smart thermostat with humidity sensing. The complete answer for homes that have always felt clammy or stuffy.
Low
$2,400
Median
$2,600
High
$2,800
Last updated 2026-06-01. Numbers reflect installed pricing — equipment, labor, permit, and commissioning.
II
What Moves the Price
The line items behind the number.
No commission scripts. Just the variables that actually change the math at your kitchen table.
01
Filtration type (1-inch / 4-inch media / HEPA bypass)
Media is the biggest jump in actual particulate removal. HEPA bypass is overkill for most homes.
+$0 – $1,400
02
UV-C lamp (single bulb vs. dual)
A single bulb at the coil handles biological growth on the wet surface — the highest-ROI placement.
+$300 – $700
03
Whole-home dehumidifier
The single most-impactful IAQ upgrade in our climate. Often eliminates the basement musty smell entirely.
+$1,200 – $2,200
04
Whole-home humidifier (for winter)
Bypass or steam. Steam is more effective but more expensive.
+$500 – $1,400
05
Energy or heat recovery ventilator (ERV / HRV)
For very tight homes that need fresh air without losing conditioning.
+$1,500 – $3,000
06
Smart thermostat with humidity control
Needed to actually control the dehumidifier intelligently.
+$200 – $450
III
On a Real Estimate
What should actually be included.
If a quote leaves any of these out, ask why — every one of them belongs on the invoice.
01
Walk-through of your actual concerns (allergies, dust, smell, humidity)
02
Filter cabinet, UV lamp, or dehumidifier as specified
03
Integration with your existing furnace/AC and thermostat
04
New return air modifications if needed for the filter cabinet
05
Condensate drain for dehumidifier integration
06
Startup, airflow verification, and humidity calibration
07
Manufacturer warranty registration
08
1-year labor warranty
IV
Usually Not Included
The things that are quoted separately.
Not hidden — just genuinely separate scopes. We will tell you up front if your home needs any of them.
- 01
Duct cleaning (separate service if actually needed)
- 02
Mold remediation (specialist work, not HVAC)
- 03
Crawlspace encapsulation (separate quote)
- 04
Replacement filters after the first year
V
Estimate Red Flags
What to walk away from, every time.
The call we would make for our own basement. These show up across the trade — not just the bad actors.
A "free duct cleaning" upsell to a $4,000 UV system you did not ask about.
A scare-tactic pitch built around mold spores in your ductwork with no actual measurement.
A UV lamp installed in the supply trunk where it cannot reach the wet surface — that is mostly cosmetic.
No discussion of humidity in the basement during summer — that is the #1 IAQ issue here, and a filter does not fix it.
Whole-house "purifiers" that claim to "kill 99.99% of everything" without any third-party validation.
VI
Honest Caveats
The things we would tell you at the kitchen table.
“
01
The single biggest IAQ upgrade in our climate is a whole-home dehumidifier — not a fancy filter. If your basement is muggy or your house feels clammy in July, that is where we would start.
“
02
A 4-inch media filter is the highest-ROI upgrade for most homes. It is also the simplest, which is why it does not get pushed as hard as flashier add-ons.
“
03
We will tell you when you do not need something. If your AC keeps humidity below 55%, you may not need a dehumidifier at all. We measure before we sell.
VII
Frequently Asked
Plain-English answers.
Still have a question? Pat and the family are a phone call away.
01 Do UV lights actually work?
On the coil, yes — they prevent biological growth on the wet evaporator surface, which improves efficiency and prevents the musty smell. In-duct UV claiming to "sterilize" the air as it whips past in milliseconds is overhyped. We install it where it actually works.
02 Why is my basement so humid even with the AC running?
Most central ACs are sized to remove sensible heat, not humidity. In our climate, a properly sized AC controls humidity in living spaces but often misses the basement entirely. A dedicated whole-home dehumidifier is the honest answer.
03 Do I need duct cleaning?
Probably not. The studies that exist do not show meaningful health improvement from routine duct cleaning. If you have visible contamination, just had construction, or moved in after a smoker — yes, it makes sense. Otherwise, skip it.
04 What MERV rating filter should I use?
MERV 11–13 in a proper 4- or 5-inch cabinet is the sweet spot. Cramming a MERV 13 1-inch filter into a return designed for MERV 8 chokes airflow and stresses the blower. Filter depth matters more than the MERV number alone.
VIII
Next Step
Ready for an honest quote?
Measured, not guessed. We walk your home, look at what is actually there, and write up a real number — not a brochure range.
Posted Fees
The fees, in the open.
- Standard evaluation / dispatch $65 – $95 not waived
- After-hours / emergency visit from $200 24/7 dispatch
- Seasonal tune-up / maintenance visit $89 spring or fall
- Inspection & testing (most services) $99 written report
Before You Compare Quotes
These ranges are estimates — your exact price comes from your home.
Every number on this page is a real range from jobs we run in Southwest Indiana, but the final price always depends on your equipment, your home's condition, and the scope of the work. Call to schedule and we'll give you an exact, written quote — no surprises at the door.
Financing is available through third-party lending partners, subject to credit approval — ask us for current options. The evaluation/dispatch fee is quoted before booking and is not waived.
Why an instant-quote algorithm can't price your job
Open 24 / 7
Comfort made perfect —
without the pressure.
Family-owned since 2009. Honest math, no commission scripts. Call Pat and the family for a real quote on your home's air.
Licensed & insured
Indiana HVAC: HAC25196 · Indiana Plumbing: PC10701678 · Illinois: #550-045707
24/7 dispatch
Even Sunday at 2 a.m.
We stand behind it
Every job, every time
END OF FIELD GUIDE A Family-Owned Operation — Since 2009 Vol. 17 · No. 26