Asked in Heating Ventilating and Air ConditioningPhysics
Heating Ventilating and Air Conditioning
How do you get heat to work on a hvac unit?
What part of an HVAC system switches the unit from air conditioning to heat and heat to air condtioning?
What is the right circuit breaker for an hvac unit?
Should the outside fan of an HVAC unit turn on when the heat cycle is on or does it only operate when in the AC cycle?
How often do you need to service an hvac unit for winter?
What is the purpose of a boiler that is used on the HVAC system?
Asked in Air Conditioning and Coolant, BMW 3-Series, Home Improvement, Heating Ventilating and Air Conditioning
What does the reset button on the house Air Conditioner do?
Asked in Heating Ventilating and Air Conditioning, Job Training and Career Qualifications, The Difference Between
What is the difference between and HVAC mechanic and an HVAC technician?
Does the fan outside on the unit have to work for the central heating unit?
Asked in Thermostats, Electrical Troubleshooting
Could an air conditioner be grounded if off at thermostat?
When dealing with HVAC systems, notice that there are two systems at work, and two possibilities for failure: the HVAC control system, and the actual HVAC unit. Determine if your problem is in the function of the controller (blank screen, not turning on, relay does not click on when fan or thermostat is set past current temperature), or in the HVAC unit (thermostat relay is clicking but HVAC fan does not turn on, condenser outside fan is not spinning, etc.) If the air conditioner was 'grounded', as I understand it, I would think your HVAC breaker would trip. This should help you figure out your problem.
Which direction should the fan blades turn on the outside HVAC unit fan motor removing the hot air from the unit or blowing air into the unit -All Electric Heat Pump?
Temperature switches will not work ac compresser activates even when heat on?
What could be wrong with my HVAC unit if the heat does not blow warm air and the air conditioning works or blows cool air?
Will power surge through an air conditioning unit if the unit is turned off at thermostat?
This question is a little vague, but I'll make by best attempt. I am assuming you mean a whole-house HVAC unit, and that you are concerned with a possible power surge so you want to shut the unit off at the thermostat. If this is correct, you need to know that the thermostat doesn't control the HVAC unit the way a switch controls a light fixture. As long as your HVAC breaker is on, you will have AC power at the HVAC unit. This usually includes at least a condenser unit outside and a blower either outside or inside. All the thermostat does is tell the HVAC components when to use the power applied and when to do nothing. The power does not flow through the thermostat to the HVAC like power through a switch to a light. Think of it this way: 'Off' on the thermostat doesn't mean power off. It means 'power available, but unit not running'. So, if you want to protect your HVAC from the potential of a power surge you will have to shut off the circuit breaker(s) feeding the HVAC components, not the thermostat.
Asked in Car Sounds, Dodge Intrepid
Why do heat or any noise or air at all only come from the front defroster for 1999 Dodge Intrepid?
There are three actuators controlling three "doors"of the HVAC unit all mounted on the outside..the defrost actuator is vacuume controlled on manual HVAC, but on electronic HVAC systems[push-button digital read-out display] the defrost actuater is electronicly controlled..This actuator is located just above the gas pedal on the HVAC housing...