If you have a Heat Pump System, you may have noticed that you have both of these options on your thermostat, but there can be a painfully expensive lesson in the difference between these heating systems, so let’s take a moment and save you some unnecessary expenses! Should You Use Washable HVAC Air Filters in 2021? If the recent cold snap has left you in the cold or your energy costs have been steadily climbing this winter, you may need a new heat pump. Auxiliary Heat will turn on automatically when heat can no longer efficiently transfer heat from the outside air to the heat pump. One sure way to know if your heat pump is working correctly is to have your system regularly cleaned and maintained by an HVAC professional like Choice Heating and Air Conditioning. The heat strips run the same either way. A heat … Auxiliary heat gets its name from the “AUX” symbol that appears on your heat pump’s controls when, under the normal heating operation, your system automatically switches on the heat strips. We proudly carry some of the best home comfort systems from some of today's top manufacturers. When the thermostat is in Emergency heat the compressor does not run, only the Emergency heat … The main difference is that the emergency heating mode in heat pumps is activated manually. (See this article about refrigerant Leaks) Emergency Heat is just the switch setting that will turn off the heat pump and only run the auxiliary heat. Keep in mind, the sooner you call someone the lower your chances of extreme increases caused by running that emergency heat for extended periods of time. Learn more about keeping our Wake Forest HVAC services to keep your system running great with Choice Heating and Air Conditioning on our blog. Below that, the heat pump will operate on "emergency heat", which is simply electric heat produced using heat coils. To avoid pulling cold air into your home while this process is happening, the heat strips activate, and you will see AUX Heat on your display. This happens sometimes when it’s colder than average and on the verge of extreme temperature drop like Nashville experienced this last spring. The emergency heat setting on a heat pump thermostat: Energizes the auxiliary heat on first stage and does not turn on the compressor and outdoor fan. **Note that if your Emergency Heat light is on but your thermostat is NOT set to Emergency Heat, this is an indicator there’s a problem with your heat pump and you should call for advice and service. What is the purpose of the crankcase heater? Emergency heat can cost a lot of money to use and should only be used in dire emergency's.   Heat) on will turn off the heat pump and run the auxiliary heat only. I guess the only difference is that AUX is an 'indicator' on your thermostat that you are running the heat strips when the switch is set to HEAT.Emergency Heat is just the switch setting that will turn off the heat pump and only run the auxiliary heat.Emergency Heat Indicator only when in Em.Heat Mode. Your auxiliary heat supplements your heat pump’s heat––it doesn’t replace it. When your heat pump breaks down, or it just isn’t working the way it’s designed to, a homeowner can switch to emergency heat. Emergency heat activates the secondary heat source to provide 100% of required heat. Emergency heat is when you turn on a secondary heat source manually. Only homes with heat pump systems will ever see this on their thermostat display. Aux or Auxiliary heat is the backup heat that turns on to help the compressor for first stage maintain your temperature setting. Difference between aux heat & emergency heat. Emergency Heat, also known as “auxiliary heat”, is the second stage of heat that your thermostat runs on when the temperature is too cold for your heat pump to extract heat from the outside. Problem 11RQ from Chapter 63: What is the difference between auxiliary heat and emergency ... Get solutions What is the difference between auxiliary heat and emergency heat? When the heat pump outside is not working, and you run the risk of damaging it more by continuing to use the unit, switching the Emergency Heat (Em. ... Another heat source added to make up the difference between the heat pump capacity and the house load. What Are Auxiliary Heat & Emergency Heat? You only use this when your compressor fails or there are extreme weather conditions and your system isn’t heating your home effectively. AUXILIARY HEAT. Heat” and “Em. The difference between auxiliary heat and emergency heat is simply the name. One sure way to know if your heat pump is working correctly is to have your system regularly cleaned and maintained by an HVAC professional like Choice Heating and Air … Auxiliary Heat In the usage of a standard heat pump, users often encounter the terms heat and emergency heat. During this time both your Auxiliary heat and your compressor may be on at the same time. They will work in tandem when the temperatures drop to those cold numbers. Another difference is that the regular heat isn't as expensive as the emergency heat. Auxiliary heat is when the secondary heat source turns on automatically. Does Auxiliary Heat Cost More to Run? EM heat is an option on your thermostat that you can manually turn on to activate backup heating. This field is for validation purposes and should be left unchanged. The AUX Heat indicator lets you know that the more expensive type of radiant heat has been engaged on your heat pump. Or have you ever wondered why some thermostats have these and others do not? As a result, the emergency heat setting is activated on the thermostat. With Choice, you can trust that the price you see on the estimate is the price you'll be asked to pay. Homes with heat pumps are equipped with a two-part system: The heat pump, which is the outdoor element, and the auxiliary heating source, which is the indoor element. To heat your house, a heat pump will transfer heat from the outdoors to the indoors, but only when the outside temp is about 40 degrees. Emergency Heat must be turned on manually while Nest thermostats can use Auxiliary Heat automatically as needed. What two types of solar-assisted heat pump systems are available? Auxiliary heat can also sometimes activate itself when you manually raise the thermostat setting more than two degrees higher than the current room temperature. There is a 5-degree difference between the ambient room temperature and the actual set point of the temperature desired. If you have walked by your thermostat lately and noticed that the AUX Heat reading is on the screen, you may wonder if something is wrong with your heat pump. 3. In most heat pumps, the auxiliary heating system is activated automatically once the temperature set goes lower than 2 degrees Fahrenheit. Heat” and just regular “Heat” settings on your thermostat? Don't wait! Be mindful that when you turn emergency heat on, it uses a lot more energy than your normal heating system and you will definitely see that reflected on your power bill! AUX heat is an additional heat source used to support your heat pump’s operations. This system is activated manually by a button/switch on your Thermostat. The outside unit is what people normally mean when they refer to the heat pump, with the inside unit being the auxiliary … If there is a difference between heat pump auxiliary heat and emergency heat, it’s subtle. 5 Warning Signs You Need a New Heat Pump in 2021. This system is activated manually by a button/switch on your Thermostat. Is auxiliary heat the same as emergency heat? What’s the difference between auxiliary heat and emergency heat? Here's a breakdown. Few people know the difference between them Although the … Difference Between Auxiliary Heat and Emergency Heat. The electric strips that come with your heat pump are engaged when the outside temperature is extremely cold. Heat Pumps vs. Gas Furnaces – 6 Things You Should Consider, Our Services: Repair, Tune-Up & Installation, The Difference Between Emergency Heat and Auxiliary Heat. Furnaces do not have these indicators. Auxiliary heat and Emergency heat are synonymous. When a system is put on an emergency heat mode, the heat pump is shut off and completely bypassed. A reduction in the heat coming from the outside might be because there isn't enough heat in the outside air, or the pump can no longer transfer heat to the inside. Air Conditioning Installation & Replacement, Nashville Hot Water Heater Repair & Replacement, Water Softener Installation & Water Filtration, The Difference Between Auxiliary Heat & Emergency Heat. As the name itself suggest, emergency heat is meant to be used in an emergency. The short answer is that auxiliary heat and emergency heat refer to the same thing, and are somewhat interchangeable. Auxiliary Heat – This is the secondary heat source that turns on automatically. You need to get your HVAC system back running properly to save you from excessive charges on your power bill. There is no difference. The emergency heat setting has to be manually switched on and should only be used in temperatures below 30 degrees. To do this, the heat pump must reverse its action to warm up this outside coil. ** Auxiliary Heat. Emergency heat is a mode the user manually selects if the unit is not providing any heat for some reason such as a malfunction. Our experienced staff can help you understand the best solution for your home comfort needs and can help you decide whether to repair your existing unit or upgrade to a new heat pump. When the heat pump outside is not working, and you run the risk of damaging it more by continuing to use the unit, switching the Emergency Heat (Em. But don’t worry, it will automatically cut itself off once it hits the target temperature. Emergency Heat is typically triggered when it is 35°F and below outside. Auxiliary heat on the other hand uses heat strips together with the heat pump to supplement the loss of heat. This will completely sidestep the heat pump and rely completely on the heat strips. The difference is quite simple. This is for those times when your heat pump outside unit is not working and you don’t want to risk damaging it more. Both systems are actually controlled by the device’s thermostat. Both forms of heat are the exact same heat elements but are labeled differently. Heat) on will turn off the heat pump and run the auxiliary heat only. Auxiliary heat is actually pretty straightforward. For the best HVAC service in Wake Forest NC, the experts at Choice can help you in 2018. Have you ever wondered what those two heat settings are on your thermostat? Call now for a free quote. Lab Manual for Fundamentals of HVACR (2nd Edition) Edit edition. EM heat is NOT the same thing as AUX heat: AUX heat signifies that your heat pump has automatically switched over to backup heating because temperatures are too low. Important: Emergency Heat and Auxiliary Heat are different types of backup heating and operate differently. Heat vs Emergency Heat. Auxiliary, the heat strips activate to supplement the heat pump's output when it can't keep up with the load. Auxiliary heating turns on automatically to help heat your home more quickly if the temperature drops suddenly. We treat our customers like family, and our upfront pricing guarantee helps us offer you the best and most affordable service. Make sure that you only use the emergency heat feature as … With most heat pumps, you’ve got two separate units: one inside the house and the other outside. But don’t worry, it will automatically cut itself off once it hits the target temperature. Call or click today to schedule your complimentary in home evaluation with our professional team for reliable HVAC service in Wake Forest NC! Watch our video to learn more. What is the difference between AUX Heat and Emergency (Em.) What’s the main difference between the two? Essentially your Auxiliary heat is called in as reinforcements for your heater when it is being overwhelmed until things return to a manageable state. These cold days have got your heat pump working overtime to keep your home warm. Auixiliary Heat will turn on automatically when heat can no longer efficiently transfer heat from the outside air to heat pump. Are you confused by the difference between “Aux. Emergency Heat – This is when you turn on the secondary heat source. Essentially your Auxiliary heat is called in as reinforcements for your heater when it is being overwhelmed until things return to a manageable state. 2. That is why it is only used in an emergency situation. I guess the only difference is that AUX is an 'indicator' on your thermostat that you are running the heat strips when the switch is set to HEAT.Emergency Heat is just the switch setting that will turn off the heat pump and only run the auxiliary heat.Emergency Heat Indicator only when in Em.Heat Mode. This setting is genuinely for emergency use only. What exactly does AUX (Auxiliary) Heat mean? Because of this, the unit will energize all the heat available to quickly generate as much heat as possible; this includes energizing the electric heat strip, or auxiliary heat also called emergency heat AND the heat pump mode. The reading will come on to a properly maintained system for two reasons, either the temperature is below 40 degrees F or the heat pump is not strong enough to keep up with the rapidly dropping temperature outside. None. We know that having to use your emergency heat during these cold snaps can be expensive and nerve wracking. However, if your heat pump is not functioning properly or is low in refrigerant the strip heat may come on at higher temperatures. Heat? They’ll be able to tell if your system has Emergency Heat, install your Google Nest thermostat, and set it up correctly. The difference between auxiliary and emergency is only that the compressor (heat pump) is locked-out from running in emergency mode. For those who operate such equipments just now, perhaps you should know the difference between the two rather than just operate on the device blindly. What’s the ideal thermostat setting in the winter? What Is Emergency Heat? This means, when the temperatures start to drop and your heat pump cannot produce enough hot air to warm your home the aux heat will turn on. Need service? If you are having to use Emergency Heat, you should call an HVAC company, like ours, right away. When outside temperatures drop below 40 degrees, your heat pump runs on one of two settings: emergency heat or auxiliary heat. The light comes on during normal operation as part of your unit's need to defrost the outer portion of the unit. That is because the auxiliary heat does not get triggered until the thermostat and room temperature are about 3 degrees different. The Auxiliary heat gets automatically turned on by your HVAC system to supplement the heat pump output when your system can’t keep up. Knowing the difference between your heat pump’s auxiliary heat and emergency heat will help address the question from above. If you have taken even a slightly longer glance at your thermostat, you may have discovered it has a couple of additional heat settings: one called “auxiliary heat” and one called “emergency heating”. When activated, it is indicated on the digital display. Having the Emergency Heat on can and will be more expensive to run. Emergency heat doesn’t rely on heat pump functionality at all — it uses a secondary heat source (like electrical resistance) in place of the heat pump. As outdoor temperatures rise and secondary heat is no longer required, the unit automatically turns off the auxiliary electric coils. It is important to call for service when this happens. 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