Air Purifiers and Filtration in Hermann, MO

Which air purifier or filter fits your home?

Start with what you want out of the air, then check what your system can move. This table compares the common choices.

What can filtration do, and what can it not do?

Filtration lowers particles in air that passes through it. That is useful, and it is the whole claim. The EPA says no air cleaner removes every pollutant, that you still need source control and fresh air, and that a filter does not fix mold.

So we do not sell any filter as an allergy air filter that treats a condition. If you have asthma or serious allergies, your doctor is the right person to ask about symptoms. Our job is the equipment: what it catches, what it costs and what it does to your airflow.

The ENERGY STAR label on air cleaning products covers energy use, not cleaning power, and the EPA does not certify filter brands. Read performance numbers, not marketing.

Sizing a whole home air purifier around your airflow

Airflow comes first. The EPA recommends at least MERV 13, or the highest rating your system fan and filter slot can take, and that last clause matters on older equipment. A filter too tight for the blower can freeze a coil in summer and trip the limit switch in winter.

We size around four things:

• Return duct area. Many older homes have one small return, which limits every filter option.
• Blower capacity. Older motors have less room to overcome restriction.
• Cabinet space. A media cabinet needs clear room beside the furnace or air handler.
• What you are filtering. Missouri's health department lists cedar, hickory, oak, walnut and ash as heavy spring pollinators, and ragweed often begins in August and runs into October. Gravel-road dust and hay season add to the load on rural properties.

For a house with no ducts, or a single bedroom that needs help, a portable unit is the right tool. The EPA uses clean air delivery rate (CADR) for sizing, so pick one rated for the room.

Should you add UV light to your HVAC system?

Only for a narrow job. EPA's technical summary says a lamp aimed at a cooling coil can limit growth on that moist surface, and a clean coil transfers heat better. River-valley summers keep coils and drain pans wet for months, so this is a reasonable add-on for some systems.

It is not an air cleaner. The same summary says typical home units do not deliver enough exposure to kill most airborne organisms, and that UV does not capture particles. It found no studies showing UV reduces dust mite or mold allergens. Uncoated lamps can also produce ozone.

What is included when we add filtration

You should get an equipment choice with a reason behind it, not a catalog.

• A check of the filter slot, return duct and blower.
• A recommendation that fits your system, including a plain "you do not need this" where that is true.
• A filter or cabinet installed with sealed connections so air cannot bypass the media.
• A note on filter size, rating and change interval, written on or near the equipment.
• A check of airflow after installation.

Here is how the job goes.

1. We talk through what is bothering you and when it happens.
2. We check humidity, the filter and the ducts for an underlying cause.
3. We measure the return and look at the blower.
4. We quote the options before starting.
5. We install the cabinet, lamp or filter.
6. We run the system and confirm it is moving air properly.

A filter swap or a media cabinet is usually a single-visit job. A bypass system or added return duct takes longer.

What changes the cost of filtration?

The technology and the sheet metal work move the price most. National guides put an extended media filter at $400 to $700, electronic cleaners at $600 to $2,000 and whole-house HEPA at $2,000 to $4,000 (Bob Vila, 2023). PICKHVAC's 2026 guide lists coil-mounted UV at $200 to $1,200, plus $40 to $200 for replacement lamps. Those are national figures, not our prices.

Your bill also depends on duct changes, electrical work and access. Replacement filters and lamps are a running cost, so count them before you buy. Ask us for a clear, upfront quote that shows the yearly upkeep too.

Caring for filters, lamps and carbon

Skipped upkeep undoes the purchase. The EPA says filters are typically replaced every 60 to 90 days, following the manufacturer's schedule. Check yours after oak season and again after ragweed. Our guide to how often to change your HVAC filter goes through each type.

• UV lamps. Dust cuts their output, so they need cleaning and periodic replacement. Shut power off first, because UV-C light harms eyes and skin.
• Carbon. It saturates over time, and a tired carbon filter stops helping.
• The basement. Keep humidity under the EPA's 60 percent line, because no filter handles moisture.

Why Brian Grannemann Services for air filtration

• We are not a filter brand. As a Hermann company since 1998, we recommend what suits the house, including no purchase at all.
• We work on the furnace and AC the filter sits on, so airflow problems do not turn into a second service call to someone else.
• Donna M. wrote that we are "not just out to get the money," which is the standard for a purchase that is easy to oversell.
• Our front desk at 124 E 10th St takes questions about filter sizes on weekdays, 8 to 4.

We serve homes around Hermann, including Berger, New Haven, Morrison and Washington. Call (209) 563-1270 with your filter size and what you are trying to remove.