7 Rays Heating, Cooling & Refrigeration has been in business since 2016, and we understand the effects of having an airtight home. While proper insulation is extremely important for energy efficiency, a lack of outside ventilation can lead to problems with volatile organic compounds, mold spores, germs, dust, dander, moisture levels, and a variety of other dangerous pollutants. 7 Rays Heating, Cooling & Refrigeration assures the correct fit and generates more pleasurable, comfortable, and healthier homes by tailoring our solutions to your individual goals.