HVAC: Install an Air-Supply Line and a Cold Air Return

Nov 10, Steve said: Search the InspectApedia website. Skip to main content. Dave Dave. The first thing that happens is the air pressure in the duct system increases, which may give rise to these negative consequences:.

Contact him at or at davidr ncihvac. Is that the best you can do? A question I get asked frequently is whether or not it's OK to close vents in unused rooms to save money.

Dampers are critical for the efficiency of a forced air system. Will it Freeze the coils? Whitman, William M. I am not in that group. Each floor needs to be set up as a separate zone with its own t'stat, either with one system per floor or automatic zone control or a combination. So the first step in any air balancing job is to make sure there's an adequate return path to each room.

If the building has a cooling system, look for the intake vent nearest the server room. There is nothing technically wrong with the latter, it is just a less expensive system to install and is a very basic approach to ducting the equipment. Using the whole open ceiling as a giant return duct or plenum is common in commercial HVAC installations. I hope you got some warranty relief! Holmes and Holmes 5pm 4c.

How do I cover/block a drop ceiling air vent?

Use a power nut driver to drive self-tapping sheet metal screws. During cold weather, gas burners create heat in the heat exchanger Image 2 , which in turn heats the air. I certainly don't know. In the case of the ECM, a high pressure will cause the motor will ramp up in an attempt to maintain proper air flow.

Can You Save Money by Closing HVAC Vents in Unused Rooms?

Looking for 3M Dual Tac Tape? Acoustic texture, commonly referred to as popcorn texture, became a popular method of texturing ceilings many years ago because it was cheap and quick. People who have similar setups and also open all their vents usually have to deal with their basement being colder than the rest of the house all year round and the upper level usually being hotter that the rest of the house all year round.

If you install your duct work in conditioned space, such as a dropped ceiling, chase, or bulkhead, rather than in vented and unconditioned locations such as attics and crawlspaces, you could gain significant advantages: It allows placement of return ducts and moving them and thus adjusting air flow simply by replacing a suspended ceiling panel with a grid. Attic installations. Allison Bailes. Understand the System To explain the components of a forced air system: The cutting bit then swivels around the center guide Image 1 , forming a perfect circle.

A home with oversized ducts and properly sized equipment MIGHT save a few percent by closing vents to unused rooms, but when is the last time you came across oversized ductwork?

Ceiling AC Vents: Pros and Cons

Eric Coffman Eric Coffman. The 3 tiered ceiling diffuser is pictured as a sample and is not included with the Posted by Allison Bailes on July 25, It's also less costly than adding dedicated, engineered, return ducts for which someone had to figure out the placement of the air inlets.

This leaves you with determining if the source of dirt is from particulate within the room itself, or if it is being brought into the room through unsealed boot penetrations. A common cure in commercial buildings, where the dirt sources are internal, is anti-smudge rings around the vent penetration. Where does the return air inlet go and how big should it be?