Air Scrubber Installation and Service in Chicago

City & Suburban Heating & Cooling has served Chicago since 1952 and holds a 4.98 average across 204 Google reviews. The family-owned company works from West Town and covers 13 Chicago neighborhoods and 8 north and northwest suburbs. NATE-certified technicians repair all makes and models, and pricing is upfront with no hidden fees. Aerus manuals say servicing by anyone but its authorized representatives can void the warranty, so the installer's status matters.

An air scrubber is a small unit mounted on the supply duct. A UV lamp shines on a catalyst inside it, and Aerus's spec sheet says the process produces ions and hydroperoxides. It holds no filter, so it does not trap dust. Other makers sell similar in-duct units, so the model matters more than the word scrubber. A whole-home air cleaner is a filter cabinet on the return side, and it captures particles as air passes through. The same name also covers portable machines that restoration crews run during mold or demolition work. Those are a separate product from an HVAC add-on.

The unit needs a forced-air duct system, because the duct is where it mounts and the fan is what moves the air. Cook County Assessor records show 133,080 properties with central air and 306,261 without, across single-family houses and small multi-family buildings in the Chicago townships. A home without central air may still have furnace ducts, but a radiator home has none. Room-sized air cleaners are the usual route there. A ductless cooling system adds no shared duct either. City & Suburban can confirm the duct layout on a visit.

Start with what a scrubber cannot do. The filter has to fit its slot without gaps and get changed on schedule. A crushed or disconnected return needs duct repair first, because the fan can pull unfiltered basement or attic air through the gap. Damp basements and visible mold need the water source handled, and the EPA says growing mold should be removed. Pets, cooking and stored chemicals stay sources whatever sits in the duct. City & Suburban diagnoses before any quote, so a simpler fix can come up first.

City & Suburban puts the exact price in writing before any work. Four things move the number: the model and cell, how reachable the supply duct is, how power reaches the unit, and whether filter or duct work comes with it. A written quote should split out the unit, labor, wiring, any filter or duct work, and the next cell. Wells Fargo Home Projects financing is available, subject to credit approval.

An in-duct add-on generally takes a few hours. Tight closets, finished ceilings and new wiring take longer. A condo or shared two-flat can add a step, since an association or co-owner may need to approve duct work. Before the technician leaves, the homeowner should see the model number, the cell date and how the cell comes out. It also helps to ask what happens to the warranty if another company changes the cell. City & Suburban offers same-day service when the schedule allows.

Chicago does not permit HVAC repair or maintenance, so swapping a cell or a lamp needs no permit. A new unit is an added device, which is a different question. City of Chicago permit records name an air scrubber just once, and that 2016 entry was a switch for an exhaust fan. A thin record does not prove an exemption. The Chicago Department of Buildings can confirm a scope with new wiring or a duct change, and each suburb sets its own rules.

The evidence is thinner than the sales sheets. Aerus cites independent lab tests of its ActivePure process, but a lab is not a lived-in house. The EPA's Residential Air Cleaners summary says no standard test method rates UV cleaners in home HVAC systems. It adds that killing airborne viruses and spores likely takes much more UV than a typical home unit provides. A unit is a reasonable add-on when the filter and ducts are sound, no mold or source problem is open, and the household accepts those limits. It is worth skipping when the real complaint is dust, pollen or one odor source. City & Suburban diagnoses before quoting, so that call can follow what the visit finds.

Less surely than the marketing suggests. Smoke and pollen are particles, and a filter is what holds particles. For gases and odors, the EPA says only adsorbent and chemisorbent media have been shown effective for some gases without harmful byproducts. For allergies, it found no research showing UV cuts dust mite or mold allergens. Aerus's spec sheet does claim VOC, smoke and odor removal, and a homeowner can weigh that against the EPA's wording. An indoor air quality test helps show what is in the air before money goes to equipment. Medical questions belong with a physician.

Ozone-free is the minimum for an occupied home. Ozone is a lung irritant, and the EPA's Guide to Air Cleaners in the Home says to avoid air cleaners and HVAC filters that intentionally produce it. California's Air Resources Board warns that some in-duct devices may create ozone at unhealthy levels. Aerus lists both ozone-free and ozone versions, and its A1013U sheet says that model meets California's ozone emissions limit. Ozone is not the only question. The EPA's summary reports that PCO air cleaners, the UV and catalyst category, have been shown to generate formaldehyde, acetaldehyde, nitrogen dioxide and carbon monoxide. That is a category finding, not a test of one model, so buyers can ask the maker for byproduct test results.

It can, mostly through the lamp and the wiring. UV-C light breaks down some plastics, flex duct and wire insulation over time, so a lamp should not face them. A spot with no room to pull the cell turns each change into a duct job. An unsealed opening leaks conditioned air into the basement or attic. A unit on a circuit that cycles off may not run as designed. These faults can be found on an existing install before a repair is priced.

A dark indicator or an overdue cell is not an emergency, because the furnace keeps heating without it. The cost of waiting is a unit doing nothing useful. A sharp smell or water near wiring is a reason to set the thermostat to Off and call. For a burning smell, a smoke alarm or a carbon monoxide alarm, leave the building and call 911 from outside. Illinois law, the Carbon Monoxide Alarm Detector Act, requires a working alarm in homes with fuel-burning equipment. City & Suburban emergency service runs every day till midnight, except Sundays.

Aerus's Air Scrubber owner's manual gives a 2-year interval for the ActivePure cell. Other makers set their own, so the model's manual decides. The cell holds the lamp and the catalyst. It is a sensible item to handle with annual service when a technician is already at the equipment. For a unit left by a seller or an earlier contractor, share the model number with City & Suburban when booking. A maintenance plan gives members priority dispatch.

Replacement can mean three things: a new cell, a new unit, or taking the unit out. A cell covers most aged units. A new unit makes sense when the housing or power side has failed and the household still wants one. Removal is a fair answer when the problem turned out to be a filter or a source. Aerus lists a limited 5-year warranty on the unit and 2 years on the cell and lamp. A new furnace job often changes the sheet metal on the supply side, so a duct-mounted unit gets refitted at that point. Planning it into that job saves a second visit. City & Suburban diagnoses before quoting either one.

Ask what the unit will and will not do, what else was checked and what the next cell costs. City & Suburban has been family-owned since 1952 and is run by Rob, of the second generation of the founding family. The record is a 4.98 average across 204 Google reviews, 4.9 from 251 Yelp reviews and a BBB A+ rating. No review names an air scrubber, so the closest proof is how the company gives advice. Jason H. wrote in September 2025: "Easy to work with, best prices, and felt like they were providing thoughtful advice." Technicians are NATE-certified.