Weatherization and DiagnosticTesting

Leaky ductwork is one of the biggest energy wasters. A diagnostic tool which pressurizes a duct system is used to test its leakiness. Perhaps the most widely used is the "Minneapolis Duct Blaster" made by The Energy Conservatory. In this test a fan blows air into the ducts and pressure differentials are used to determine the rate of air leakage. It is common to see leakage rates of 250-400 CFM in older duct systems. This amount of leakage can result in a 30% or more reduction in operating efficiency, the result is higher utility bills and difficulty keeping the house comfortable, no matter how the thermostat is set.

We identify air leakage sites and the quantity of leakage in the building shell using the Minneapolis Blower Door with their DG-700 gauge. Uncontrolled air leakage is a primary contributor to high utility bills and can contribute to reduced indoor air quality as some us are sensitive to dusts, pollen and the remnants of trapped critters (and their products) which have lived in the walls, and may be drawn into the home with air leakage. While older homes are usually too leaky, newer homes may be too tight, with no natural leakage to provide the proper fresh air for occupants.

Radon- The U.S. Surgeon General and EPA recommend that all homes be tested for radon. Radon, a radioactive gas that you can’t see, smell or taste, can pose a danger to your family’s health. Radon is the most common cause of lung cancer (after smoking) and claims about 20,000 lives annually. Studies show that it’s found in all 50 states and that one out of every 15 homes has an elevated radon level.
Carbon Monoxide- (CO) is a colorless, odorless gas produced by incomplete combustion of fuels like gas, oil, and wood—and it can kill you. At lower doses, CO can worsen heart conditions, and cause fatigue, headache, weakness, confusion, disorientation, nausea, and dizziness.

Insulation slows the movement of heat so it keeps your home warm in the winter and cool in the summer. When correctly installed, insulation can deliver comfort and lower energy bills during the hottest and coldest times of the year. Most homes, however, have insufficient or missing insulation. Insulation works best when air is not moving through or around it. So it is very important to seal air leaks before installing insulation to ensure that you get the best performance from the insulation. To get the biggest savings, the easiest place to add insulation is usually in the attic.

Wherever different materials meet, such as between wood siding and brick or between the chimney and the ceiling, there is the potential for gaps. We inspect the following areas for any cracks and gaps that could cause air leaks:
Doors - both between the door and the jamb and between the jamb and the wall.
Windows - both around the window frame and between the frame and the wall
Mail chutes - around the mail chute, also make sure it closes tightly
Any place where pipes or wires pass through a wall
Around window air conditioners
Light switches and electrical outlets, especially on exterior walls

Air can carry dust, dirt, and other pollutants as it travels through your home. Without good ventilation, they can become trapped indoors and create health problems for everyone in your family – including asthma, allergies, and cold symptoms. We make sure your combustion equipment is working and venting safely. Sealing air leaks and ducts keeps pollution from entering your home and lowers dust levels. Proper insulation and heating and cooling choices help prevent a variety of air quality issues. Your home comfort and energy advisor can recommend additional energy saving ventilation equipment and devices to further clean your air and offer an even higher level of protection.

Insulation slows the movement of heat so it keeps your home warm in the winter and cool in the summer. When correctly installed, insulation can deliver comfort and lower energy bills during the hottest and coldest times of the year. Most homes, however, have insufficient or missing insulation. Insulation works best when air is not moving through or around it. So it is very important to seal air leaks before installing insulation to ensure that you get the best performance from the insulation. To get the biggest savings, the easiest place to add insulation is usually in the attic.