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Premium Duct Work Installation in Baltimore, Lutherville-Timonium, Ellicott City, MD and Surrounding Areas

SuperTech HVAC is the Certified Duct Work Installer in Baltimore Metro Area

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$99.00


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$19.97

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100% Guarantee & Warranties 

24/7 Live Answer

Free Diagnosis ($99 value)

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Free Maintenance Twice a year 

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20% off Repairs

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10% off New System*

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What Is The Basic Function Of Duct Work?

The first thing you need to understand is that the ductwork is highly important for your house. Your ductwork system is installed so that it can distribute airflow from the HVAC unit and into every room.

Air ducts, or HVAC ductwork, or AC ducts, are conduits that supply warm or cool air to heat, ventilate, and cool each room. Air ducts are connected to the HVAC unit which filters then heats or cools your home’s air before sending it off. Air ducts are a vital part of your HVAC system, providing thermal well-being and good indoor air quality to your family.

The airflow that is being taken in and then put out could tell you how efficient your ductwork system is. Sometimes insufficient heating or cooling is due to poorly designed return ducts, for example, too small in size, poorly located, or not enough number of return ducts. Lack of well designed return ducts causes lack of circulation and limits hvac system ability to cool or heat the entire home evenly. (Expand to learn more!)

Your HVAC unit will only be as effective as your ductwork is and even the best one on the market will fail efficiency-wise if your ductwork is poor and old.

In other words, if your ductwork is not running properly, some 20 or 30% of all the cool or hot air that’s supposed to run into your house will actually be lost in the attic. The air conditioner itself might break down sooner because of an inefficient duct system.

We recommend a ductwork replacement if it’s too old and is now putting a strain on your unit.


Please keep in mind that if your house or building also has sets of pipes that transport water, gas or refrigerant, they do not belong in the same category as ductwork. This only refers to air.

What Are Signs You Need Duct Work Replacement? Check out below!

Your Neighbor Recommends SuperTech HVAC

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Stephen's focus on doing the job right the first time makes him a top pick for HVAC work. He does the extra mile in communication, work, and extras to ensure the job is top quality.

---Paul C. (Home Advisor)
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Daniel was very knowledgeable and willing to talk me through the process. He was prompt, very thorough, and very careful to keep the house clean.

-- Kelly D. (Nearby Now)
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They were reliable and good quality but the customer service was awesome.

--Marvine J. (Google)

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Signs that You Need Duct Work Replacement:

Little or No Air Flow

Not Warm Enough

Uneven Temperatures In House

Strange Noises

Loud or Bizarre Noises from Ducts

Increased Dust

High Utility Bills

Costly Utility Bills

Sneezing or Increased Allergies 

Live Comfortably With SuperTech Duct Installation

Duct Knowledge:

What Are The Types Of Air Ducts?

Sheet Metal Duct
Galvanized steel or aluminum air ducts can be round, oval, or rectangular like the one Bruce Willis crawls through in Die Hard. Sheet metal HVAC ductwork is the most durable and least likely to harbor mold. Metal air ducts are practically rustproof, especially galvanized steel with its zinc coating.

Flex Duct
Simply put, flex ducts are made from a steel wire spiral, wrapped with a polymer (a bendable plastic), and surrounded by insulation. This kind of ductwork is inexpensive, lightweight, and easy to install. Flex ducts work wonders in tricky spaces where more rigid ductwork will not do.

Fiberboard Duct
This type of duct has two layers: compressed resin-bonded inorganic fiberglass is encased in foil to prevent air and water vapor from penetrating. Typically, this air duct is the least expensive, prevents noise, and is already well insulated. The downside? The rough fiberglass surface inhibits airflow.

Beware – old fiberboard ducts aren’t treated to prevent mold or mildew and should be replaced immediately. If you suspect you have old fiberboard ductwork, do not attempt to clean it. The surface damage will release fiberglass into the air and throughout your home.

What Does The Ductwork Installation Process Look Like? 

1. Install the ductwork starting with the unit. Use the sheet metal kind and duct tape to wrap around every joint. It will seal it tightly.
2. If you can, run some ductwork among the floor joists. Hold it in place using galvanized hanging straps.
3. Add the pieces that approach every vent or that register in your home.
4. It’s time to add the return ductwork. Start at the main unit once more. Work your way out just like you did the first time.
5. Turn the thermostat as high as it can go to test the ductwork you’ve just installed.

What Are Common Ductwork Installation Mistakes?

  • Not installing a support for the flex ducts every four feet. That could cause the ductwork to sag, which might mean that the air flow is a lot lower while the friction could be higher.
  • Not insulating the supply lines in their entirety. It’s not enough for the spaces the ductwork goes through to be insulated, the ducts have to be so as well.
  • Not fastening two pieces of ductwork together with a rigid connector. Don’t just flex them inside each other.
  • Don’t forget to insulate the butt joints. If you do, then the supply air could leak out.
  • Not testing the ductwork after installing it. This could lead to serious issues not being discovered until it’s too late.

checkout our Homeowner’s Guide to Ductwork to learn more.

What Are Common Duct Designs?

Check this out – there are 4 common air duct designs.

The first is the plenum or radial duct system. Radial systems have the HVAC unit and return grill at the center of the home with the supply ducts extending out around the plenum like the legs of a spider.

The second is the reducing extended plenum system. As the name implies, the plenum reduces in size as it extends across with the air ducts coming out from either side.

The third is the extended plenum system. This time the plenum, which does the distribution or removal of air for the HVAC unit, does not reduce in size as it extends across.

The last is the perimeter loop system – a radial system, not as many spider legs, with a supply duct that encircles the building.

Learn about Duct Design Problems here

What Steps Are Involved In Duct Planning And Duct Design Fundamentals?

1. Think about the type of equipment and supporting systems
There are some kinds of units, such as heat pumps that might need you to install larger ducts. Or, if the system you want has air purifiers that have filters with activated charcoal, you will also need larger ducts as well as more air returns.


2. Calculate the load in detail
This becomes especially important if you have more than one room that will need to be heated or cooled differently at the same time. In this scenario, you should calculate the load for each of those rooms and not for the whole house at once.


3. What’s the best place to put your unit and ducts?
If you have planned this out properly, than the HVAC unit should have a somewhat centralized position. This will minimize the length of the ducts. Speaking of which, they need to sit in the ceiling and internal walls so that no air will be lost. If possible, avoid installing your ducts in crawl spaces or in the attic so that you don’t waste any conditioned air.


4. Find the proper materials
This of course, includes the supports and fittings. It will depend greatly on the budget you have as well as your needs, but even so you should always make sure your technician uses only the top quality ducts.


5. Make sure everything is perfectly sealed
If the joints have not been sealed correctly, then up to 20% of the air may be lost in transition. Therefore, you need to use mastic gum or even metal-backed tape as an alternative.

How Does Air Flow In A Forced System?

In HVAC systems, your air goes through a cycle. A negative pressure in the ducts sucks the air in, passing it through a filter. The cleaned air is heated or cooled and sent back to the areas of your house where it stays until it’s cycled again. Return and Supply Ducts are critical in the movement of airflow.

Return Ducts
Contrary to popular belief, HVAC systems get their air from inside the building. Return ducts extract air from the living spaces back to the HVAC unit, feeding either your furnace or air handler. Return vents are usually larger than supply vents and are called grills. A filter is often installed either deep inside a return duct or right at the return grill to protect your HVAC unit from impurities.

Supply Ducts
Supply ducts blow warm or cool air to an area inside a home. Supply vents often have dampers to control the flow, called registers. Supply registers will often be installed near windows or doors to better counteract the loss of heat or cold, and two supply registers may be installed in larger rooms to evenly distribute the HVAC air.

Installing Comfort and Ease! 

You may be wondering why it’s important to have a qualified air duct installation contractor handle your project. Air ducts are critical for home comfort because they deliver the conditioned or heated air throughout the house and remove humidity, dust, odors and pollutants from inside of your home before releasing it back outside. If you don’t address this issue correctly, your HVAC system will never run efficiently again which can lead to higher utility bills in addition to more costly repairs down the line and uncomfortable living. Air Ducts are most important and oftentimes overlooked parts of a home. Make sure you get it right! And that means it needs a quality installation! 


It’s time to breathe easy. We know that air duct installation is a big decision. That’s why we are committed to providing you with the right information, so you can make an informed choice about which company will be best for your needs. We hope you’ve enjoyed learning about air duct installation. If the prospect of air duct installation still seems a little daunting, don't worry! Our team is ready to help with all sorts of questions or concerns and can provide an estimate for free. Call or schedule online today!


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