Can you run ductwork outside?

414
SHARES
2.3k
VIEWS


Yes you can, although it will be more expensive, won’t last as long because the duct is exposed to the weather, will be less efficient, and would likely screw up the look of the house, even if you paint it. You could conceal it in soffits or chases, but there’s more money.

Click to see full answer

Moreover, can you run HVAC ducts in exterior walls?

The bad news is that if you have an older home with your supply vents in the exterior walls, you ought to plan some way of addressing the problem. The best thing to do is open the wall and remove the duct and boot, do your air-sealing, and then insulate. That means finding another place for the supply vents, of course.

Secondly, does exposed ductwork need to be insulated? Insulation is applied to ductwork to enhance thermal performance and prevent condensation and dripping. Exhaust air ducts normally do not need insulation. Supply air ducts may be left un-insulated if they run exposed through the space being conditioned; this arrangement also reduces system first cost.

Secondly, can you run ductwork through floor joists?

Here’s a joist cavity being used as the main return duct. This is also the location of the air filter. This is a panned floor joist cavity being used as supply duct. Drainpipes should not pass through ductwork.

Where should the return vent be located?

Place your cold air return vents on the inside walls of buildings at the lowest point. The return vent pulls cold air from the bottom of the room and returns it to the furnace to be reheated and returned as warm air. Unlike supply vents, return vents do not need to be cased in metal.

Where should HVAC vents be placed?

Supply register vents should be in every room as well. Located on the outer walls, under windows, in the ceiling, or on the floor, placement depends on the heating or cooling system as well as the construction of the home.

What are vents on outside walls for?

The two main reasons for heating vents on outside walls are to reduce condensation on windows, which can prematurely deteriorate if water or ice builds up on the inside of the glass due to cold outdoor temperatures, and to prevent cold pockets from forming in the room near outside walls.

Why do they put heating vents under Windows?

Why are heating vents so often placed in front of windows? Also, the windows are the source of the greatest amount of heat loss in a room. Cold air sinks to the floor and makes for uncomfortable, cool spots in the room. Having the heating vents under the windows counteracts the movement of the cold air to the floor.

How do you reroute HVAC ductwork to remove walls?

Detach the connection where the flexible duct meets the circular end of the rigid duct. To do this, cut away any duct tape with a utility knife, then loosen and remove the duct screws. Pull the section of rigid duct out of the wall. Save this piece.

How do you insulate ductwork?

When insulating HVAC ductwork, use a foil faced fiberglass insulation with an R-6 or higher R-value. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. Make sure the foil surface of the insulation is free of dust before applying the tape.

How can I hide the ductwork in my basement?

  1. Paint. The fastest and least expensive way to cover your duct work is to paint it the same color as your ceiling.
  2. Soffits. Soffits, also called bulkheads, are a frame you build around the duct work to hide it from view.
  3. Drop Ceiling.
  4. Flattened Ducts.

Can ductwork be made of wood?

That’s why sheet metal, or specific ductwork piping works well for the function you are describing: it can take the expansion/contraction without the swelling and distortion wood would experience as the metal is flexible and tight, whereas the wood is porous and unpredictable. I would say: No, don’t use wood.

Where should I put my return and supply ducts?

Supply air from furnaces and air conditioners should be on outside walls. The return air vent openings need to be on the opposite side of the room so the conditioned air is pulled across the room. If the supply ducts are in the floor, then the return air should be located up high.

How do you increase return air flow?

3 Simple Ways to Improve Your Furnace’s Airflow for More Comfort
  1. Unblock and clean your vents. Here’s a super easy way to increase air flow.
  2. Change your filters and clean your return grill. A dirty air filter impedes air movement and makes it hard for your furnace to work efficiently.
  3. Seal leaky ductwork. Snap on some goggles and a dust mask, it’s time to check out your air ducts.

Can Return air vents be in the floor?

An air return vent is part of the HVAC system. Return vents are usually larger than heat registers and can generally be found close to the ground or in the floor in older homes or on a wall close to a ceiling in newer homes.

How do you make a duct board plenum?

How to Make a Duct Board Plenum
  1. Set a piece of duct board on a firm surface with the foil vapor barrier sitting on the work surface.
  2. Mark the duct board.
  3. Lay the duct board knife flat between the duct board and the foil vapor barrier with the tip of the knife pointing toward the 1-1/2-inch line.
  4. Pull the V-groove tool along each marked cut line.

Can I tap into existing ductwork for basement heat?

Extend Your Ductwork: Tapping into your existing heat and air conditioning system will provide the basement with reliable heat and prevent you from having to maintain separate heaters.

How much does duct cost?

Typical costs: Replacing aging, leaking or inadequate ductwork typically costs about $35-$55 a linear foot for labor and materials, or $1,000-$5,000 or more for a single-family home, depending on the length and type of ducts used (sheet metal, fiberduct or round flexible ductwork) and local rates.

Is exposed ductwork cheaper?

Even when ductwork is exposed, it’s anything but unfinished. Hidden ductwork is typically blocky, dirty, oily and generally not aesthetically pleasing. Round or oval ducts deliver a more “finished” look but are significantly more expensive.

Is insulating ductwork worth it?

Ducts are made of sheet metal, fiberglass, or other materials. Ducts that leak heated air into unheated spaces can add hundreds of dollars a year to your heating and cooling bills, but you can reduce that loss by sealing and insulating your ducts. Insulating ducts in unconditioned spaces is usually very cost-effective.

Is round or square duct better?

A round duct, however, is more efficient than a rectangular duct in performing the same task; it is also smaller in cross-sectional area and has less duct wall exposed to moving air. An 18 in dia round duct, for example, has the same air-carrying capacity as a 26 in wide and 11 in high rectangular duct.

What type of insulation is used for heating ducts?

fiberglass