The Cooling You’re Paying For, Delivered to Your Attic

Your air conditioner can be in perfect condition and your home can still be uncomfortable, because
the equipment is only half the system. The other half is the ductwork that carries conditioned air
to your rooms, and in most Sacramento-area homes, that ductwork runs through an attic that hits
130°F or more on an August afternoon.

According to ENERGY STAR, ducts in a typical house lose roughly 20 to 30 percent of the air moving
through them to leaks, holes and poor connections. In a house with attic ducts in a Fair Oaks
summer, that isn’t a rounding error, it’s cooling you paid for, dumped into the hottest part of
your house.

Seven Signs Your Ductwork Is the Problem

1. One or two rooms never keep up. Especially at the end of a duct run, or over a garage. The
thermostat is satisfied; that bedroom isn’t.

2. Weak airflow at the registers. Put your hand at the vent. If air is barely moving in some
rooms while the blower is clearly running hard, air is escaping before it arrives.

3. Rooms that are dusty no matter how often you clean. Return-side leaks pull attic air,
insulation fibers, dust, whatever’s up there, into your air stream and distribute it through the
house.

4. Bills that climbed while nothing changed. Longer runtimes to reach the same temperature.

5. The system runs constantly on hot days but the house drifts warmer. Capacity is being lost
between the equipment and the rooms.

6. Visibly damaged, disconnected or sagging duct in the attic or crawlspace. Flex duct gets
crushed by storage, chewed by rodents, and separated at boots and takeoffs over the years.

7. The upstairs is dramatically worse than the downstairs. Partly physics, but often duct
design and leakage compounding it.

What a Duct Inspection Actually Looks At

A real duct assessment isn’t a glance in the attic hatch. We look at connections at the plenum and
at every boot, insulation condition and R-value, duct sizing relative to the equipment (undersized
returns are extremely common in older homes), crushed or kinked runs, and whether the register
layout matches how the home is actually used today, additions and remodels frequently leave rooms
served by ducts sized for a different floor plan.

From there the fix is usually targeted: seal and re-connect what’s failing, replace the runs that
are past saving, correct undersized returns. Full replacement is sometimes the right call, but it
isn’t the default answer.

Duct Cleaning vs. Duct Repair, Not the Same Thing

Duct cleaning addresses what’s in your ducts: dust, debris, and the buildup that accumulates over
years. Duct repair and sealing address whether your ducts deliver air where they’re supposed to.
Both are worth doing at the right time, but if your problem is a room that won’t cool, cleaning
won’t fix it. Ask which one you actually need, and be skeptical of anyone selling cleaning as the
answer to a comfort complaint.

Frequently Asked Questions

Q: How do I know if my ducts are leaking?
A: The most common signs are uneven room temperatures, weak airflow at some registers, persistent
dust, and rising bills with no change in usage. Confirmation requires an inspection of the ductwork
itself.

Q: How much cooling can leaky ducts cost me?
A: ENERGY STAR estimates typical duct losses at 20 to 30 percent of the air moving through the
system. Homes with attic ducts and older flex runs sit at the higher end of that range.

Q: Can I seal ducts myself with duct tape?
A: Duct tape is famously the wrong product for ducts, it fails in attic heat within a season or
two. Proper sealing uses mastic or foil-backed tape rated for the application, and the leaks that
matter most are usually at connections you can’t easily reach.

Q: Should I repair the ducts or just replace the whole system?
A: If your equipment is sound, duct repair alone often resolves the comfort complaint. If you’re
already replacing equipment, correcting the ductwork at the same time is the right moment, a new
high-efficiency system connected to failing ducts won’t deliver what it promises.

Q: Is duct cleaning the same as duct sealing?
A: No. Cleaning removes debris from inside the ducts. Sealing stops conditioned air from escaping.
Different jobs, different outcomes.

If one room in your Fair Oaks, Carmichael or Citrus Heights home never gets comfortable,
your ductwork is the first place to look. Call Absolute Comfort Heating & Air at (916) 224-7159
to schedule a duct inspection.