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San Antonio, Tx.

980 Talley Rd San Antonio, TX 78253

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M. D. Ellis HVAC provides home and business indoor air quality (IAQ) diagnostic testing specifying valuable information, where we can then help you eliminate major problems impacting your air quality

It’s easy for homeowners to overlook their indoor air quality because when they think of air pollution, which often comes to their mind is the air outside. For a moment, let’s forget about the industrial and corporate facilities emitting toxic and greenhouse gases.

Environmental Services Group performs testing for a variety of substances and conditions that can affect indoor air quality in the Greater Toronto Area (GTA) and beyond. These include:

  • Carbon monoxide
  • Carbon dioxide
  • Dust and allergens
  • Temperature and humidity levels
  • HVAC systems
Carbon Monoxide
Carbon Monoxide is a colorless, odorless, tasteless toxic gas and is a deadly asphyxiate at high levels. CO can be produced when incomplete and improper burning of fossil fuels occurs. Gas and oil heating systems, gas, diesel and propane driven vehicles, floor polishers, forklifts, generators, fire pits and other related systems have the potential for harmful concentrations and are all around us at work and at play.

Chronic low levels of CO can compromise any health condition. At low concentrations CO can go undetected, and contribute to nagging illnesses and premature death. Healthy adults may show no ill effects to low-level concentrations and still complain of headache or a constant stuffiness that can worsen if undiagnosed.

Elderly people, small children and infants or anyone in poor health can experience effects much sooner than a healthy adult.

Respiratory problems, chronic heart disease, dizziness, vomiting, flu like symptoms, general weakness and confusion are all symptoms of CO poisoning. Pets can be more susceptible because of their faster metabolic rates.

Carbon Dioxide

Carbon dioxide or CO2 is a naturally occurring substance that exists as a gas at standard temperatures. We exhale it when we breathe and it’s used by plants in photosynthesis. It’s one of the so-called greenhouse gases and is also produced by burning fossil fuels.

At various levels, it becomes toxic to the human body and can have many consequences including:

  • Weakened powers of concentration
  • Headaches
  • Fatigue
  • Increased rate of breathing
  • A choking sensation
  • Eventually unconsciousness

Carbon dioxide measurements indicate whether the amount of fresh air is sufficient, and airflow measurements indicate whether the volume of air supplied is adequate.

Dust and Allergens

More and more people are finding themselves to be sensitive to dust and other allergens which may be present in the air both indoors and out. We can’t control the air outdoors but we can do something about the air we breathe inside.

Dust and allergens in your home can contribute to a variety of respiratory issues along with aggravating existing allergies.

What are the symptoms of poor air quality?

The common signs and symptoms linked to poor IAQ include:

· Coughing and sneezing
· Sinus congestion
· Shortness of breath
· Chest tightness
· Headache and nausea
· Skin and eye irritation
· Scratchy throat and runny nose
· Dizziness

These symptoms usually get worse when you are indoors.

Testing – for Peace of Mind

M. D. Ellis HVAC provides home and business diagnostic testing specifying valuable information, where we can then help you eliminate major problems impacting your air quality. Analysis of your home or business will leave you feeling much more confident of the environment you live in – even if tests reveal your home to be safe.

We can test for heating, cooling and humidity in addition to carbon monoxide and carbon dioxide levels and then provide solutions for HVAC or other systems which are contributing to poor air quality. You can count on us as licensed and trained heating and air conditioning professionals to provide solutions, leaving you with peace of mind enjoying your warm, comfortable and healthy home.

Texas Indoor Air Quality Website

Resource Title State Information
IAQ State Program Texas Department of State Health Services
Program Website State IAQ Program Website
Fax Number NONE
Toll-Free Hotline NONE
State Contact Contact Us
State Resources



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