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HVAC Systems Guides
79 guidesHow heating, cooling, ductwork and ventilation work in Central Texas homes: sizing, efficiency, maintenance and the problems that show up when a long summer or a hard freeze pushes equipment to its limit.
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Humidity & Moisture ControlWhat Should You Set Your Thermostat to When You’re Away?What to set your thermostat to for a workday, a summer vacation or a winter trip in Central Texas, balancing energy savings, humidity and…
Air ConditioningHow Cold Should the Air From Your AC Vents Be?What temperature difference to expect between your AC return and supply vents, how to check it at home, and what a low or high…
Ductwork & Air FlowWhy Is One Room Hotter Than the Rest of the House?The usual reasons one room runs hotter than the rest of the house in Central Texas, how to tell heat gain from an airflow…
DehumidificationDo You Need a Dehumidifier If You Have Central AC?When central AC is enough to control humidity in an Austin home, the signs you need a dehumidifier, and portable versus whole-home options.
DehumidificationWhy Is My House Humid Even With the AC Running?The common reasons a house stays humid with the AC running in Central Texas, how to narrow down which one you have, and what…- VentilationDoes a Bathroom Exhaust Fan Need to Vent Outside?Why a bathroom exhaust fan must be ducted all the way outdoors, what happens when it dumps into the attic, and how to check…
FiltrationDo Portable Air Purifiers Help During Austin Allergy Season?What a portable HEPA air purifier can and can't remove from the air in one room during Austin allergy season, and how to size…
Ductwork & Air FlowDoes Closing Vents in Unused Rooms Save Money?Why closing supply vents in unused rooms rarely lowers your bill with central air, what it can do to your system, and what saves…
FiltrationShould You Run Your HVAC Fan on ON or AUTO?Why AUTO is usually the better fan setting in an Austin summer, and when running the fan ON or on circulate makes sense.
Ductwork & Air FlowHow Do You Increase Airflow to One Room?How to get more air from the vents in one weak room, from the quick checks you can do yourself to the duct problems…
Health & SafetyWhere Should CO Detectors Go in a Home With a Gas Furnace?Put a carbon monoxide alarm on every level and outside each sleeping area, then add coverage near the furnace and attached garage per the…
Health & SafetyCan an Air Conditioner Produce Carbon Monoxide?No: an electric air conditioner or heat pump burns no fuel, so it cannot make carbon monoxide, but its blower can spread CO from…
