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Whole House Ventilation System Installation in Baltimore, Lutherville-Timonium, Ellicott City, MD and Surrounding Areas

SuperTech HVAC is the Professional Whole House Ventilation Contractors  in Baltimore Metro Area




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What Is A Whole House Ventilation System?

Whole House Ventilation Systems like, Heat Recovery Ventilators (HRVs) and Energy Recovery Ventilators (ERVs), are air-handling systems that consist of fans, controls and heat recovery elements. These devices eliminate stale air from the house through bringing fresh outdoor air inside. This happens while recovering a portion of energy lost through traditional ventilation methods like opening windows or doors. ERV’s and HRV's continuously provide your home with fresh indoor airflow without wasting any unused thermal energy! These ventilation systems allow you to bring in fresh air while still maintaining your home’s temperature. They also filter outside air before bringing it into a residence, preventing pollen, dust, and insects from entering the home.

The heat recovery core is used in the winter to absorb heat from the stale exhaust air and transfer it to the cold incoming air. The outgoing, conditioned exhaust air is responsible for cooling the incoming air in the summer.A number of models suitable for locations with extremely cold temperatures are equipped with automatic defrost mechanisms, which allow continuous operation throughout the winter.

The HRV and the ERV share similar functionality, creating fresh air, removing stale air and recovering energy from the exhaust air as they function. One of the primary differences between the two is the HRV transfers heat, while the ERV transfers both heat and moisture. The homeowner can control air quality and air exchange with both ventilation systems rather than relying on leaks that are inherently inadequate to provide ventilation.

HRVs and ERVs are a great addition to any home. They can be standalone units or attached as an accessory to your existing heating and cooling system

Some Specific Benefits Are:

  • Expels indoor pollutants from the home
  • Improves indoor air quality 
  • Provides a constant flow of fresh, filtered and tempered outdoor air throughout the home
  • Removes stale air from indoors
  • Recovers heat from the exhaust air in winter
  • Controls excess indoor humidity 
  • Cools incoming air in summer when the house is air-conditioned
  • Reduces pollutants such as radon, formaldehyde, excess moisture or odors.
  • ERVs can reduce the moisture content of the fresh incoming air which helps to reduce the load on the air-conditioning system.

What are signs you could benefit from a whole house ventilation system? Check out below!

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Signs you need a Whole House Ventilation System:

Drowsiness/ Fatigue


Sinus Congestion

Coughing or Sneezing

Shortness of Breath


Life is easy Breezy with Whole House Ventilation

Curious About Whole House Ventilation Systems?

What Is Ventilation?

The ventilation system is the V in HVAC. In a nutshell, a ventilation system is what improves the atmosphere in your house or building by removing stale air and replacing it with clean, fresh air that comes from outside.

How Does A Whole Home Ventilation System Work?

Whole Home Ventilation Systems, like ERV and HRV, have two ventilation ducts that run next to one another and pass between the inside and outside of a house. The first carries cool, fresh air to the inside; the other passes moist, stale air to the outdoors. A clever aspect is that these airstreams  flow through what's called a heat exchanger where they can trade off their temperature without actually mixing together at all! In addition, the ERV will transfer some moisture to the fresh air if this air is dryer than the exhausted stale air improving comfort in overly dry houses. This is all thanks to the second law of thermodynamics which states that energy will move from areas of high energy to areas of lower energy. 

Types of Whole Home Ventilation System: 

Exhaust Ventilation System
The first type works by depressurizing your home. Its circuit will expel polluted air that’s inside the house. At the same time, make-up air infiltrates the house via leaks in the shell and through some intentional and passive vents.

If you live in a cold climate, this is the system for you. The reason is that warm climates are also humid and that humidity will be drawn inside through the depressurization method. Once inside, it will condense and start to mold.

Supply Ventilation Systems
This is the one which uses a fan in order to pressurize your home. Therefore, air from the outside is forced into the building. What’s inside will then escape through holes in the bath, shell, as well as intentional vents and range fan ducts.

Just like the ones above, these too are quite inexpensive and fairly easy to install so they will be a good choice if you’re thinking about a whole home ventilation system.

Balanced Ventilation Systems
If this system has been designed well-enough it will neither depressurize not pressurize your house. Instead they allow equal quantities of air to come in and out through its two duct systems and two fans.

You can use this type of system in all climates but you should know they are a little more on the expensive side.

Let us know if you have any questions or if you’d like to know which whole home ventilation system is appropriate for you. Use the number at the top of the page and call us anytime you want!

Is Poor indoor air quality (IAQ) really a big deal?

The air you breathe indoors is just as important for your health and well-being than the air outside. Poor Indoor Air Quality (IAQ) can cause symptoms like headaches, fatigue, trouble concentrating, irritation with eyes nose throat and lungs along with certain diseases such asthma that are caused by specific contaminants or conditions in an environment. Some exposures do not have any immediate effects but may lead to cancer after many years which is why it's so imperative to keep a healthy indoor environment!

What causes Poor Indoor Air Quality (IAQ) ? 

A number of factors affect indoor air quality (IAQ), including poor ventilation (insufficient outside air), temperature control problems, a high or low humidity level, recent remodeling, as well as other activities taking place in or near a building that may negatively impact fresh air. Some toxic pollutants can cause poor IAQ, like mold, dust, cleaning supplies, asbestos, and other airborne chemicals. Keeping a building ventilated and well-maintained can prevent and solve problems related to indoor air quality.

What is Sick Building Syndrome?

Traditionally associated with office workers, Sick Building Syndrome refers to a series of symptoms, like headaches and respiratory problems, which result from poor ventilation inside of buildings.


For a home to be healthy, it needs fresh air from the outdoors. It can be hard to grapple with the fact that your HVAC system is most likely circulating bacteria, allergens, and other pollutants.As people spend more and more time indoors, they become prone to modern diseases such as Sick Building Syndrome. This describes an umbrella of ailments caused by poor indoor air quality or unsatisfactory conditions in the home or work space. Moreover, if there's not enough ventilation indoors moisture and unpleasant odors can linger. If moisture levels are high in your house due to climate or other factors, then you need to remove that excess humidity before things get out of hand with mold growth!

Whole house ventilation systems like the ERV and HRV are a unique and innovative way of improving your air quality while saving energy for both the environment and your wallet! Our team of specialists are eager to ensure you are breathing easy at all times! To learn more, call our office or schedule a free consultation today!  

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