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HVAC Systems Guides page 2
92 guides · page 2- All
- HVAC Systems
- Heating
- Air Conditioning
- Ductwork & Air Flow
- Ventilation
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HeatingWhy Is My Furnace Blowing Cold Air?A furnace that blows cold air usually has a simple cause: the thermostat fan is set to ON, the furnace is in its first…
Humidity & Moisture ControlWhat Should You Set Your Thermostat to When You’re Away?In summer, raise the thermostat a few degrees instead of turning the AC off, generally no higher than the mid 80s, so the house…
Air ConditioningHow Cold Should the Air From Your AC Vents Be?Air from your supply vents is usually about 15 to 20°F cooler than the air going into the return, a difference called the temperature…
Ductwork & Air FlowWhy Is One Room Hotter Than the Rest of the House?One room runs hotter when it gains more heat than its air supply can carry away. Usual causes: afternoon sun on west or south…
DehumidificationDo You Need a Dehumidifier If You Have Central AC?Many Austin homes don't: a correctly sized, well-maintained central AC in a reasonably tight house usually keeps indoor humidity below 60 percent in summer.…
DehumidificationWhy Is My House Humid Even With the AC Running?Your AC only removes moisture when it runs long enough with air moving slowly across a cold coil, so anything that cuts that short…
VentilationDoes a Bathroom Exhaust Fan Need to Vent Outside?Yes. A bathroom exhaust fan should be ducted all the way outdoors through a roof or wall cap with a damper flap. The residential…
FiltrationDo Portable Air Purifiers Help During Austin Allergy Season?A portable HEPA purifier can lower the fine particles floating in one room, such as dust, pet dander and some pollen, if it's sized…
Ductwork & Air FlowDoes Closing Vents in Unused Rooms Save Money?Usually not. With central air, closing vents in unused rooms doesn't make the blower move less air. It raises duct pressure and pushes more…
FiltrationShould You Run Your HVAC Fan on ON or AUTO?For most Austin homes, AUTO is the better fan setting in cooling season. On AUTO, water on the cold AC coil drains away after…
Ductwork & Air FlowHow Do You Increase Airflow to One Room?Start with free checks: the register fully open and unblocked, a clean filter, and a path for air back to the return (compare the…
Health & SafetyWhere Should CO Detectors Go in a Home With a Gas Furnace?Put a carbon monoxide alarm on every level of the home and outside each sleeping area, as CPSC and NFPA recommend. With a gas…
