Sexually transmitted diseases -- or STDs -- often are silent, meaning there are no symptoms. Women may not notice any symptoms until they have developed serious complications. Be on the lookout for: A drip or discharge from the penis, urethra, vagina, or anus; the color may be white, yellow, green, or gray.
An energy recovery ventilator (also abbreviated ERV) is a type of air-to-air heat exchanger that not only transfers sensible heat but also latent heat.Because both temperature and moisture are transferred, ERVs can be considered total enthalpic devices.he benefit of using energy recovery is the ability to meet the ASHRAE ventilation & energy standards, while improving indoor air quality and reducing total HVAC equipment capacity.
The purpose of an HRV or an ERV is to deliver fresh air to a homeâs interior. Neither appliance is designed to provide makeup air for combustion appliances or kitchen exhaust fans. HRVs and ERVs are not space-heating devices, heat-delivery devices, or energy-saving devices.he best way to duct an HRV or an ERV is always to use dedicated ventilation ductwork, separate from the forced-air ductwork. Ideally the exhaust air is pulled from the bathrooms or laundry room and the fresh air is supplied to your bedrooms and living room. Any other ducting method is inferior.