At Stirling Technology, Inc., we are committed to the development of sustainable, environmentally friendly technologies.

Welcome to UltimateAir

Times have changed

Not that long ago energy was cheap. Because energy was cheap, most of us didn't worry about how much we wasted. This attitude was reflected in the cars we drove and the way we built our homes.

Today, rising energy costs are changing the way we think about our homes. New homes are being built tighter and more energy-efficient. Existing homes are receiving energy-saving retrofits. This is great news. Unfortunately, tighter homes means polluted air can actually be trapped inside where it can make your family sick. According to the EPA, air trapped inside the average home is five times more dangerous than outside air. In fact, of all the chemicals regulated by EPA, only two are more prevalent outdoors than indoors. This is important considering the average person spends 90% of their time indoors.


To keep the air inside healthy, balanced mechanical ventilation is used to control the exchange of stale air with fresh air. RecoupAerator leads the industry with the highest energy recovery, highest filtration at the lowest amount of energy used - two extremely important measures of performance. RecoupAerator's performance in these areas is so advanced that we are the ERV of choice for Passivhaus U.S.

Healthy fresh air for less than 20ยข per day

Chances are people wouldn't purposely eat or drink poison.  Most are conscious about what they put into their bodies.  But the average person doesn't concern themselves with the potentially harmful substances in the air they breathe.  Air quality - and the harmful substances in the air - often go unnoticed because air is invisible.

Many people believe poorly insulated homes provide enough 'natural' air exchange to keep indoor air clean. Unfortunately, natural ventilation also brings in musty air from damp musty crawl spaces, car exhaust, pesticides and many other contaminants. Older homes also have pollutants - lead dust, asbestos, and chemical residues - that newer homes may not have. And every home - new or old - has computers, electronics, appliances, woodstoves, fireplaces and building materials that offgas harmful contaminants. Natural ventilation does not provide any way to filter these contaminants.


The best way to control indoor air quality is to properly ventilate. RecoupAerator delivers a continuous supply of fresh, filtered air into your home while exhausting contaminated stale air.

  •  Keeps air fresh and clean
  •  Exhausts contaminants for improved indoor air quality
  •  Saves energy by recovering 95% of the heat from exhaust air
  •  Cools incoming air in the summer
  •  Manages humidity

Building "to-code"

Building "to-code" represents a minimum grade of construction. In other words, you can't build it any worse than "to-code". For those who are interested in a healthy indoor living environment, ventilating your home "to-code" might not be good enough. With so many other areas to compromise, clean healthy air shouldn't be one of them. There's nothing wrong with building a home that exceeds code, especially when it concerns indoor air quality.