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In cold climates, with a 15 MPH wind, residences often have air exchange rates of 1.0 to 1.5 ACHs, far in excess of the ventilation air needs and are thus called loose construction. It is very easy to reduce infiltration rates to less than 1.0 ACH. Smoke candles and blower-door tests can help identify less-than-obvious leaks.
Heat waves wreak havoc on electrical, HVAC, and plumbing systems and walls, floors, and roofing. Learn from an expert how to prevent heat damage to your house. 7 Upsetting Things That Happen to ...
A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating, ventilating and air-conditioning (HVAC) ductwork. A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a pressure sensing device to measure the pressure created by the fan flow.
They conclude 15% of the space conditioning energy use can be saved in the UK context going from 11.5 m 3 /(m 2 ·h) @50 Pa (average current value) down to 5 m 3 /(m 2 ·h) @50 Pa (achievable). Given its impacts on heat losses, good building airtightness may allow installation of smaller heating and cooling capacities.
Check whether filters for heating or air conditioning need to be cleaned or replaced. Look for a product's EnergyGuide label to learn how much energy it uses, and make comparisons with other options.
Since buildings are not totally sealed (at the very minimum, there is always a ground level entrance), the stack effect will cause air infiltration. During the heating season, the warmer indoor air rises up through the building and escapes at the top either through open windows, ventilation openings, or unintentional holes in ceilings, like ...
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