What can I do about ductwork sweating?
  1. Reduce the humidity level around your air ducts. Keep ducts spaced apart so air can flow between them.
  2. Unblock any ducts that are restricting air flow and have them cleaned regularly.
  3. Keep your air filters clean and change them regularly.
  4. Repair leaking ducts.


Should I insulate my air handler? fiberglass insulation inside the cabinet. This insulation is supposed to prevent the air handler from sweating and condensing moisture on its exterior during warm weather. The insulation inside the air handler should also be enough to prevent major heat loss in winter months.

how do I stop condensation on my air handler?

Sealing the Crawl Space Properly: If you have the air handler unit mounted at the crawl space of your house, then sealing the crawl space properly in order to prevent the humid outside air and/or ground moisture coming inside will definitely help you reduce/eliminate the sweating problem.

How do you seal an air handler? Use mastic, mastic plus embedded fiberglass mesh fabric, or UL 181A or B tape to seal all cabinet seams and junctures between the air handler or furnace cabinet and the evaporator coil cabinet, the supply plenum and the return plenum. Use putty around all conduit and wiring holes.

why does my AC unit have so much condensation?

Dirty air filters– when your AC air filter is dirty, partially blocked, or completely clogged, your air conditioner's evaporator coils are more likely to freeze up, causing excess water to overspill from the drain pan. If the drain pipe is blocked, it could cause water to leak from your AC.

Is mold in air handler dangerous? Mold and other indoor air pollutants that hide in air conditioners can cause allergic reactions and even respiratory disorders. Any mold in your home is dangerous, but mold spores in the air are dangerously easy to inhale, especially for young children and elderly people.

is it normal for my air handler to sweat?

Lack of Insulation Not having enough insulation between an indoor air handler and the warm outside air is a common cause of sweating. When the cool air meets the warm air, condensation often occurs on the metal air handler.

Can you replace just air handler? Unfortunately, the short answer is yes. You should replace your indoor air handler at the same time as your outdoor heat pump — or air conditioning unit if it's that time of year.

Why is my air handler dripping water?

Cause 1: Clogged condensate drain line A clogged condensate drain line is the most common cause of water leaking from your AC into your home. If the drain line gets clogged with dust, dirt, sludge or mold, that water backs up into your home.

How does an air handler work? The job of the handler is to circulate the air throughout your home. The indoor air handler unit comprises an air filter, coil, and blower. The handler pulls air in, passes it over the coils (to cool or heat), and then blows it back out into the home through the duct system.

Why is my suction line sweating?

A sweating suction line is perfectly normal. Excessive sweating might be caused by not insulated well enough or too cold due to poor air flow over the evaporator. Some types of systems might sweat a lot because of being overcharged but in that case, usually the whole compressor will be sweating.

Does air handler need to be level?

The air handler must be installed in a level position to ensure proper condensate drainage. Keep flammable materials and vapors, such as gasoline, away from air handler. Place air handler so that heating elements are at least 18 inches (46 cm) above the floor for a garage installation.

How long do air handlers last?

Many homeowners decide to replace it after about 10-15 years for a new, more efficient model. In the long-run, replacing the system every 15-20 years (most systems' average life expectancy) is more economical in terms of maintenance fees and energy bills.

What causes condensation on ductwork?

Condensation is most commonly caused by a difference in temperature between the air conditioning duct and the air outside. Hot, moist air surrounding a cold air duct becomes condensed when it cools down, forming water droplets that can be seen as condensation around the ducts.

How much condensation is normal for air conditioner?

Air conditioners pull humidity out of the air and funnel the resulting water, or condensate, into a drain. the amount of condensate the unit produces varies, increasing as the outdoor humidity level rises. Most modern air conditioners will produce between 5 and 20 gallons of water per day.

What is condensation in air conditioning?

Condensation is water vapor that turns into liquid form when warm and humid air comes into contact with a cold surface. When you leave a cold drink sitting out on a hot and humid day, you'll see condensation collect on the cold surface of the glass. The condensation you see on the AC vent gets there the same way.

Should outside AC unit sweat?

Other times, low air flow caused by a dirty air filter or dirty coils could be causing the evaporating coils to ice over. When the ice melts, a large amount of water will all come out at once, creating a puddle. Sometimes issues with the compressor or the reversing valve can cause it to sweat.

What is attic air handler?

Most often, air handlers are located in the attic, basement or a dedicated closet, and may closely resemble the shape of a gas furnace. As its name suggests, an air handler “handles” the air inside your home and delivers warm or cool indoor air throughout your entire home.

Why is my AC in the attic?

Why Put An HVAC System In Your Attic Because hot air rises, and cool air sinks, ceiling vents are the delivery system of choice for cooled air, particularly in hot, humid climates with a predisposition for cooling. So, putting the unit in the attic seems like a smart, space-saving move.