Most homeowners think that windows and doors are responsible for most heating and cooling issues in a house. In reality, air leaking from hidden cracks, chases, and penetrations can add up to the equivalent of one or two open windows.

Air flowing in and out of a building can cause lots of problems; in fact, air leakage can account for 30 percent to 50 percent of the heat loss in some homes.

While many contractors do a visual evaluation of your home, most air leaks are not visible. We use advanced diagnostic technology to test and record your home’s hidden air leaks. We provide you with a full report of what we find and make a series of recommendations to help you decide the best plan of action for upgrading your home, including both low-cost adjustments you can make and larger upgrades for your home.

Blower Door Testing

With a blower door, builders can quantify airflow and the resulting heat (or cooling) loss, pinpoint specific problem areas to determine where air sealing would be beneficial and when a home needs additional mechanical ventilation.

Carbon Monoxide Testing

Carbon monoxide, even in small quantities can cause serious health problems. We are trained to measure the safety and efficiency of all your combustion equipment, including appliances, water heater, gas range, space heaters, furnaces and boilers.

Leak Testing

Home Star Iowa’s team uses thermal imaging to discover the air leaks and vulnerable areas behind walls that lack insulation inside the home. We also perform a static pressure test to find installation problems or blockages inside your air ducts. The air lost in transit from your heating and cooling systems to your living space can be significant.

Interested in testing your home for air leaks? 

Contact us at (319) 244-8564.

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Leading Expert, Rob Novak

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  • Doug de Regnier
     It was recommended that I upgrade my HVAC to GEO by a heating company. I had Rob come in and check my house, he is very professional and knolagable. He ran a complete series of tests, showed me with thermo pictures and real numbers how I could insulate better, upgrade my HVAC without going to the expense of GEO and save more money. Well worth it. 
  • Joan Tucker
    An energy audit can be a pleasant and informative experience. It  was such during the one completed by Rob Novak for my house recently. In addition to many helpful suggestions to seal warm air leaks in all areas of the house, he found a problem with carbon monoxide in one place. The water heater chimney was blocked. There was a squirrel which had died inside the chimney,...
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  • Sandra Schneider

    Your services were great and more than I expected!

  • Thomas House
    The main thing we took away from the energy assessment was the confidence that comes with having guidelines for laying out a course of action. We knew we had issues with the home's envelope but weren't certain where to start. Using a combination of basic and complex technologies, Rob was patient and professional. He identified problem areas and possible solutions and presented...
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  • Chuck and Jill Monnahan

    We were extremely impressed with the energy audit that Home Star Iowa did on our home a few months ago. The knowledge he had in regards to the energy saving tips he provided was top notch. The equipment and the detail that went into the energy audit was amazing - he explained the results of the audit in detail and provided us a report that was easy to understand, not to mention all the recommendations that will save us money. If you are wanting an energy audit done on your home - there is no...

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  • Pat Shey

     As the owner of a 100 year old home, I sometimes wonder where I should start in making my home more comfortable.  Rob came in and went through all of my utility bills, measured every window, checked the efficiency of my boiler and hot water heater, did a blower door test and walked through the house with an infrared camera and showed me where I need insulation, where the air infiltration is coming from.  A day later, he gave me a very comprehensive report that showed me the steps I can take...

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