Indoor air quality testing in Kalamazoo homes

Most air complaints in a house start as a feeling: a bedroom that seems close at night, a musty basement smell, a dry throat every February. Testing turns that feeling into numbers. Our technicians bring calibrated meters into your home, take readings room by room, and look at how your furnace or air handler, ductwork and ventilation are moving air through the space.

The goal is practical. A reading by itself means little unless it points to a cause you can fix, such as a return duct pulling from a dusty crawlspace, a humidifier set too high, or a tight house with no fresh air path. We explain each number in plain terms and tell you which changes are worth the money and which ones are not.

Signs you need indoor air quality testing

What we measure and why each reading matters

Relative humidity is usually the first number we look at, because it drives so many other problems. In a Kalamazoo winter a house without humidification can drop into the teens, while summer basements often sit well above 60 percent. We also count airborne particles in two size ranges, measure carbon dioxide as a stand-in for how much fresh air the house is getting, and log total VOCs from finishes, cleaners and stored products.

Carbon monoxide gets checked at the furnace, water heater and living areas on every visit. Each reading is taken indoors and outdoors so we can see whether a number comes from inside the home or simply reflects the air outside. That comparison keeps the results honest and stops anyone from chasing a problem that is not really there, like a particle spike on a smoky summer day.

• Relative humidity and temperature in each main room and the basement
• Fine and coarse airborne particle counts
• Carbon dioxide levels in occupied rooms
• Total volatile organic compounds
• Carbon monoxide at appliances and living spaces

How your furnace and ductwork shape the results

Your forced-air system moves the entire volume of air in the house several times an hour while the blower runs, so it plays a big part in what you breathe. A one-inch filter that leaves gaps around its edges lets dust slip right past. Return ducts with open seams in a basement or crawlspace pull in damp, dusty air and spread it to every register upstairs.

During the visit we look at the filter rack, blower compartment, accessible duct joints and the condition of the evaporator coil if we can reach it. A dirty coil or a damp drain pan can add moisture and musty odors. These are mechanical findings, and they often explain readings far better than any single meter number. We note blower speed and run time too, since a fan that rarely runs moves very little air through the filter.

Old drafty homes versus tight new ones

Southwest Michigan has both extremes. Early 1900s homes around Kalamazoo often leak enough air through old windows, attic floors and balloon-frame walls that winter humidity collapses and the furnace runs long cycles. In those houses the fix is usually humidification, sealing and better filtration, not added ventilation. Basements with fieldstone or block walls can also feed damp air into the furnace return all summer, which shows up clearly in the humidity log.

Newer subdivisions in Portage, Oshtemo and Texas Township are built much tighter. That saves energy, but moisture, carbon dioxide and VOCs have fewer ways out. Testing in a tight home often points toward balanced mechanical ventilation such as an ERV or HRV rather than more filters. The same meter readings lead to very different answers depending on how the house was built.

Turning the readings into a plan

After testing, our technician walks you through the numbers and ranks the fixes by impact. Some are small: a better filter cabinet, sealing a return, adjusting a humidifier setting or running the blower on a low circulate speed. Others are larger equipment additions, such as a whole-home dehumidifier for a damp lower level or a fresh air system for a tight house.

At the end of the visit you get a written summary of the readings and the recommended changes, with prices for anything that involves equipment. There is no pressure to do everything at once. Many homeowners start with the low-cost items, such as filter fit and return sealing, then retest a season later to see how much the numbers moved before deciding on anything bigger.

How a indoor air quality testing visit works

1. Call and describe the concernTell us what you are noticing and when it happens. We set a visit time and ask you to keep windows closed and the system running normally beforehand.
2. Outdoor baseline readingsThe technician records outdoor humidity, particles and CO2 first so every indoor reading has a fair comparison.
3. Room-by-room testingMeters are placed in bedrooms, living areas, the kitchen and the basement, with carbon monoxide checked at each gas appliance.
4. System inspectionWe look at the filter fit, blower, coil, drain pan, return ducts and any existing humidifier or ventilation equipment.
5. Results and optionsYou get the readings explained in plain language, a ranked list of fixes and prices for any equipment we recommend.