Question 1

We rent a downtown Bay Minette apartment near the Courthouse Square. The registers smell musty every summer and the landlord won't return our calls about it. Can you come assess the IAQ even without the landlord's sign-off?

Accepted Answer

An IAQ assessment on a rental address produces the same documented findings whether the tenant or the landlord requests it: indoor RH readings at multiple stations, return-side static-pressure measurement, photographs of the indoor coil and condensate path, an inventory of LP combustion appliances and their venting, and a written summary of what is driving the chronic-smell complaint. What the tenant-requested assessment does NOT do is commit anyone to remediation work above a comfort-call threshold — that authorization belongs to whoever holds the lease and the property-management contract on the building.

Question 2

We rent a small law office in a repurposed 1960s building near the Bay Minette courthouse. One office stays cold and dry, the next one over is warm and humid. Why does it do that, and what would actually fix it?

Accepted Answer

What you are describing is the signature failure pattern of an HVAC system that was originally specified for a residential floor plan and then asked to serve a partitioned office layout without rebalancing the duct system around the new wall locations. The mechanical consequence is exactly what you are living with: one room on the same trunk gets disproportionate supply-air delivery and stays cold-and-dry, the next room downstream gets the leftover and runs warm-and-humid because the air handler cannot deliver enough conditioned air to it against the new partition wall blocking the original return path. The honest diagnostic measures static pressure at the air handler and at the most distant return grille in the suite, maps the supply-and-return geometry against the current partition layout, and produces a written recommendation that usually involves some combination of: adding a return-air pathway where one no longer exists, rebalancing supply registers against the current room loads, or in the worst cases relocating a supply trunk that was simply never going to work against the current floor plan.

Question 3

Our Bay Minette house uses propane for the kitchen range, the water heater, and a furnace. What's actually different about indoor air quality in winter vs summer up here?

Accepted Answer

Quite a bit, and the difference matters for how the assessment frames recommendations. In the heating season on a Bay Minette home, the story shifts. Any combustion appliance running indoors — and in this geography propane (LP) is the realistic combustion fuel because broad natural-gas distribution does not reach north Baldwin — adds water vapor, CO2, and trace combustion byproducts to the indoor air whenever the appliance is operating. During a multi-night freeze stretch with the furnace running hard, the combustion-byproduct load climbs sharply. The assessment walks three items specifically in winter mode: the combustion-air supply path on every LP appliance (a path seasonally blocked against the cold pushes the appliance toward incomplete combustion and elevated indoor CO2), the kitchen range-hood vent termination (a hood that recirculates or discharges into the attic puts combustion byproducts back into the conditioned air), and the water-vapor balance — because LP combustion adds moisture, but the heated-air dryness of a hard-running furnace can simultaneously push indoor RH below the 30-percent comfort floor on the same property. A CO-and-smoke combination detector on every level is the non-negotiable baseline; the rest of the IAQ stack works alongside it.

Question 4

Our 1970s house in Bay Minette feels really dry every January when the heat is running. Is a whole-house humidifier worth installing, or should we just keep using portable units in the bedrooms?

Accepted Answer

The decision turns on how dry the house actually gets, how often, and what symptoms the dryness is producing, and the assessment measures rather than guesses. Multi-night sub-freezing stretches do push indoor RH well below the 30-percent comfort floor on Bay Minette homes where the LP furnace runs hard against the older 1970s envelope, and the symptom cluster — dry skin, dry sinuses, static-shock events, hardwood-floor shrinkage with widening gaps, piano-tuning drift on instruments inside the house — is real and is worth addressing. Portable bedroom humidifiers handle the symptoms in the rooms they serve while they are running and not at all in the rest of the house. A whole-house humidifier installed on the supply plenum runs whenever the heating system runs and treats the conditioned envelope as a single space. Our second-heaviest HDD reading in the matrix at 1,166 HDD per the ERA5 record means the heating system does run enough hours per winter to justify the whole-house option on most addresses where the dryness symptoms are actually persistent.

Question 5

Our small office is right on Highway 31 in downtown Bay Minette and we change the 1-inch filter constantly but it loads up almost immediately. Should we just buy a higher-MERV filter?

Accepted Answer

Probably not in the existing 1-inch slot, no — and that is the most common filter-spend mistake we see on the downtown commercial corridor. Properties adjacent to or downwind of US Highway 31 carry a measurable roadway-particulate load that interior or residential addresses do not, and the spring tree-pollen surge through March and April adds to that baseline. The mechanical problem is that a 1-inch slot running MERV 13 produces enough static-pressure drop across the filter that air handler airflow falls below the manufacturer specification, which cuts dehumidification capacity at the coil and often does not actually deliver the fine-particulate capture the higher MERV promises because the air short-circuits through return-side leak points around the filter rather than going through it. What moves the needle is filtration-cabinet geometry. A 4-inch media cabinet retrofit lets you run MERV 11 or MERV 13 at a much lower pressure drop, stretches the replacement cadence from monthly to roughly quarterly even through the Highway 31 traffic baseline plus the spring pollen weeks, and captures fine roadway and pollen particulate at the timescale that matters.

Question 6

Do I need a whole-house dehumidifier in Baldwin County?

Accepted Answer

Probably not if your AC is properly sized and maintained — a right-sized AC removes plenty of moisture during normal cooling cycles. You DO benefit from a whole-house dehumidifier if: (1) your home is tight new construction where AC doesn't run long enough to dehumidify, (2) you have a vacation rental that sits at higher setpoints during vacancy, (3) you have chronic mold complaints despite good cooling, or (4) you have indoor pools/spas/large fish tanks adding moisture continuously. We provide a written estimate before any work begins.

Question 7

Are UV-C lights worth installing on my HVAC system?

Accepted Answer

Coil-mounted UV-C lights are genuinely useful in Baldwin County's humidity — they keep evaporator coils and drain pans biologically sterile, preventing the musty smell that humid climates produce. Worth considering for homes with chronic supply-vent odor or vacation rentals. We provide a written estimate before installation. The marketing claims about UV killing airborne pathogens are overstated; airflow is too fast for meaningful kill rates. For air sterilization, better filtration is more cost-effective.

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