If you have driven around Cumming lately, you have seen it: new subdivisions where woods used to be and road work on every corner. Forsyth County has been one of the fastest-growing counties in Georgia for years. I have watched it since moving here in 2016, and it shows up in the homes we work on.
1. Construction dust
Neighborhoods near active building sites see more dust in the air.
- Filters load faster; check them monthly and expect 30 to 45 days between changes.
- Outdoor coils collect debris faster; rinse them gently in spring.
- New homes carry construction dust in the ducts for the first months.
2. Builder-grade equipment
Most new homes come with entry-level equipment that meets code minimums:
- Single-stage systems at or near the minimum efficiency.
- A standard 1-inch filter rather than a media cabinet.
- Equipment that does the job but is not built for long life or humidity control.
Nothing is wrong with it, but it helps to know what you have when you plan maintenance and eventual replacement.
3. Ductwork built for speed
When crews build a few hundred homes at a time, we often find:
- Undersized return air paths.
- Leaky or unsealed connections in the attic.
- Duct sizes that do not match the room layout.
Signs: an upstairs that runs warm, rooms that never balance, higher bills than neighbors with similar homes.
4. Hotter new subdivisions
When mature trees are cleared, streets and roofs soak up more sun. Outdoor units in full sun work harder. Shade from landscaping helps over time, as long as plants stay a few feet back from the unit.
What to do
New-home owners
- Start yearly maintenance in year one; manufacturers expect maintenance records for the warranty.
- Consider a media filter cabinet.
- If rooms do not balance, ask for a duct and airflow check.
Long-time residents
- If your system is 12+ years old and bills are climbing, plan replacement in spring or fall rather than in a July emergency.
- Compare scope, not just price, when you get quotes. Ask about a load calculation and how the lines are evacuated.
Why local matters
We work in five-month-old homes in new Cumming subdivisions and in much older homes in Roswell. Knowing the builders, the lake humidity and the hot new streets helps us fix the real problem faster.
Tune-ups are $135 for one system, and the maintenance plan is $229 a year ($189 the first year) for spring and fall visits.