is auxiliary heat the same as emergency heat
Signs that your auxiliary heat is not operating correctly: The auxiliary heat does not turn off when you lower your thermostat. While auxiliary heating indicates that your heat pump automatically switched from normal to auxiliary heating, emergency heating is a setting that allows you to manually set your system to auxiliary heating. Here in Florida, we typically use the heat pump for our primary source of heat when heating the home; however, this unit also has a limit. The auxiliary heat will kick on if the heat pump needs additional heating capacity to meet your set temperature. This will save you money in the long run. Is auxiliary heat the same as emergency heat? You won’t find an option to use Emergency Heat, but your thermostat will automatically use alternate heat when needed. This secondary heat source is typically electric heating coils integrated into the system. Heat Pump Stuck in Aux Heat Mode The reason your thermostat has aux heat is that it indicates when gas or electric power has been triggered to help your heat pump reach a warm enough temperature when the weather outside is extremely cold. Auixiliary Heat will turn on automatically when heat can no longer efficiently transfer heat from the outside air to heat pump. As temperatures drop further, however, the heat pump may not extract enough heat. Emergency Heat is when you use your “second-stage” (supplemental heat) by itself without using your “first stage” (heat pump). Emergency heat activates the secondary heat source to provide … Auxiliary Heat. This is for those times when your heat pump outside unit is not working and you don’t want to risk damaging it more. If you have a heat pump, it is best to increase your heat setting by only two degrees at a time to prevent your auxiliary heat from operating. It is signaled as “backup” for your actual heating system since the outdoor heat pump doesn’t seem capable of handling the situation on its own. Some HVAC units have a toggle switch for emergency heat. If the heat pump ices over, AUX heat will kick in more often, in order to compensate and raise the temperature to the desired levels. All these are great questions! However, it’s important to understand that this setting turns off the heat pump completely. Both “auxiliary” and “emergency” heat have to do with the operation of these electrical strips. Emergency heat is the same thing as auxiliary heat. The difference between auxiliary heat and emergency heat is simply the name. Emergency Heat is when you use your supplemental heat (2nd stage) by itself, without the use of your heat pump (1st stage heat). When you need heating or air conditioning repairs, maintenance or system replacements, you need a company you can count on for dependability and quality service. Switching to the emergency heat setting forces your heat pump to bypass the method it typically uses to produce warm air and instead rely solely on heat produced by the heat strip coils. Auxiliary heat uses electric resistance heating, which is much less efficient than your heat pump. Note: In some cases, your heat pump’s AUX heat could be a gas furnace, but since Phoenix typically has mild winters, some AZ homeowners will have electric resistance as their AUX heat. The reason your thermostat has aux heat is that it indicates when gas or electric power has been triggered to help your heat pump reach a warm enough temperature when the weather outside is extremely cold. I figured out the B was really a C but from the Nest website it wasn’t clear if a heat pump with aux electric heat was considered a dual fuel or … You should verify that the X wire on the old thermostat is not a common wire. It becomes necessary once the temperature drops below a certain point. Note that auxiliary heating is not the same thing emergency heating (displayed as “EM HEAT” or “EMER” on most thermostats). Supplemental heating sources are known as “second-stage” or “back-up” heating. On the other hand, your emergency heat takes over, or replaces, your heat pump’s heat. Heat pumps need a supplemental heating source. If outdoor temperatures temporarily drop and your heat pump can no longer extract enough heat, the proper mode is automatic auxiliary heat. Auxiliary heat on the other hand uses heat strips together with the heat pump to supplement the loss of heat. When do I use it? Emergency heat activates the secondary heat source to provide 100% of required heat. The reason your thermostat has aux heat is that it indicates when gas or electric power has been triggered to help your heat pump reach a warm enough temperature when the weather outside is extremely cold. Note: If Alt heat (not AUX heat) appears, your Nest Thermostat E is configured to work with a dual fuel system. What is it? 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. Therefore, a heating system stuck in AUX heat will run up an energy bill. Especially when the weather is below 40 degrees. Emergency heat is a mode the user manually selects if the unit is not providing any heat for some reason such as a malfunction. It is common that the Emergency heat and auxiliary or backup heat is the same source of heat (electric heat strips or fossil fuel). Both forms of heat are the exact same heat elements but are labeled differently. If you think your heat pump is broken, it’s best to get it fixed as soon as possible. Auxiliary heat is automatically activated when there’s not enough outdoor heat. We are always here to help as much as we can! As outdoor temperatures rise and secondary heat is no longer required, the unit automatically turns off the auxiliary electric coils. As the name indicates, auxiliary heat, or emergency heat depending on your system, is just a secondary heat source. If there's a wire in the W1 connector, make sure it says AUX heat. The difference in name "emergency heat" vs. "auxiliary heat" results from differences in needs based on your local environment. The Emergency Heat Setting is Engaged. Both of these wires are needed for Emergency Heat. Auxiliary heat is the electric heat strip in your air handler that is supplemental heat. The reason your thermostat has aux heat is that it indicates when gas or electric power has been triggered to help your heat pump reach a warm enough temperature when the weather outside is extremely cold. A heat pump can satisfy your home’s heating needs as long as the outdoor temperature … Our professional team of technicians look forward to providing energy efficient and cost effective solutions to keep your home or business comfortable at all times. This setting should be used only if there is something wrong with your heat pump, and even then, only as a short-term fix until you can have the system repaired. © 2019 AAA-1 HVAC | Site by Possible Zone Marketing. (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. In other words, it only uses the secondary electrical or gas system for heating. The thermostat will sense this and turn on electric heat strips automatically turning on the “AUX” heat light. The defrost mode stays on. Along these same lines, the auxiliary heat may come on if the unit has been running for ten to fifteen minutes without any change in the temperature of your home. If you have any questions, please don’t hesitate to call us! 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. If you live in an area when the temperature hardly ever goes below 30 degrees, even at night during the coldest month of the year, then a … The reason your thermostat has aux heat is that it indicates when gas or electric power has been triggered to help your heat pump reach a warm enough temperature when the weather outside is extremely cold. As the name itself suggest, emergency heat is meant to be used in an emergency. Electric heat strip - This electric heat strip is auxiliary heating (or “aux heat” as it shows up on your thermostat). This is why it is only used in an emergency situation. When you turn on Emergency heat, this will only turn on the indoor unit and back-up heat. For example, if your house is not warm and it’s because something has happened to your outdoor unit, then it’s time to turn Emergency Heat on and call for service. When activated, it is indicated on the digital display. This setting is genuinely for emergency use only. Terms & Conditions | Privacy Policy | Sitemap | Design & Marketing by LeadsNearby, What All New Homeowners Should Know About HVAC, Duct Efficiency Is Key for Running Your HVAC Unit, Make Sure Your HVAC Insulation Is Working the Right Way, From Heating to Cooling: To-Do Before Turning on Your Air Conditioner. Emergency heat setting is turned on. For more about understanding the auxiliary and emergency heat mode for your heat pump, contact the professionals at Jackson & Sons. This setting turns off the heat pump completely and should only be used during an emergency. If you live in colder states with harsh winters, the outside temperature can mess with your heat pump. **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.**. That is because the auxiliary heat does not get triggered until the thermostat and room temperature are about 3 degrees different. Different systems and thermostats have different ways of determining when the second-stage heat comes on to assist the heat pump, but it is always done automatically. Moving heat- In heat mode, your heat pump is like an air conditioner working in reverse to pull heat from the outside to inside your home (the opposite of how it works in cooling mode). In aux mode, your heat pump will continue to use outside air to warm your home to assist the secondary heat source. Down to a certain temperature, there’s sufficient latent heat in cold air to maintain indoor temperature settings. Select “Heat Pump”. Essentially your Auxiliary heat is called in as reinforcements for your heater when it is being overwhelmed until things return to a manageable state. Change to the desired value. The Emergency Heat Switch on a Heat Pump confuses a lot of people. In this mode, the heat pump continues extracting as much heat energy as possible, but also adds heat from a secondary source to make up the difference. The reason your thermostat has aux heat is that it indicates when gas or electric power has been triggered to help your heat pump reach a warm enough temperature when the weather outside is extremely cold. The outdoor temperature where this occurs varies according to the efficiency of each particular heat pump, but it’s typically below 40 degrees. When switching your unit to emergency heat, you’re forcing the backup heat system to do all the work. Select “Settings”. Exactly as the name implies, in emergency situations only. Aux on the thermostat stands for auxiliary heat. When winter temperatures plunge, at some point your heat pump may require either auxiliary heat or emergency heat to keep the house warm. Heat pumps don’t generate heat with a burner flame like a gas-fired furnace. The important thing to remember is that “AUX” heat is fast and dependable but it’s also more expensive than heat … The outlet temperature with and without Aux heat depends on outdoor temp, wattage of electric heat strips and CFM setting. Your heat pump only is the “first stage” heating. This switch allows homeowners to turn on AUX heat manually. External Factors That Can Initiate AUX Heat. When the heat pump can no longer maintain the desired temperature setting, then the … Do I turn it on when it’s really cold? Emergency heat is a mode the user manually selects if the unit is not providing any heat for some reason such as a malfunction. This system is activated manually by a button/switch on your Thermostat. Auxiliary Heat Your auxiliary heat, as just described, supplements your heat pump’s heat when it needs it. In this mode, the heat pump still contributes as much heat as possible, minimizing demand from electric heating coils. So when should you use your Emergency Heat? Auixiliary Heat will turn on automatically when heat can no longer efficiently transfer heat from the outside air to heat pump. Instead, they extract latent heat energy in outdoor air, concentrate it, then circulate it through the home’s ductwork. An example when emergency heat may be used could be when a part has been ordered for a needed repair and your HVAC professional has shared that by switching to emergency heat, your home will continue to be warm for your family. The reason your thermostat has aux heat is that it indicates when gas or electric power has been triggered to help your heat pump reach a warm enough temperature when the weather outside is extremely cold. Auxiliary heat/ Emergency heat helps the heat pump keep up when cold outside or the temperature differential on the thermostat is large. When the thermostat is in this position the compressor does not run, only the Emergency heat runs. The auxiliary heat setting is more energy and cost-efficient than emergency heat. When outdoor temperatures drop below the tipping point, heat pumps offer two options: auxiliary heat and emergency heat. While they do allow you to continue to get the heat you need in your home to stay both comfortable and healthy, they do cost quite a bit more to run for longer periods of time, which is … **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. EM heat is an option on your thermostat that you can manually turn on to activate backup heating. As outdoor temperatures rise and secondary heat is no longer required, the unit automatically turns off the auxiliary electric coils. The system continues to operate in emergency mode until the user manually turns it off. What Is Emergency Heat? This is when the outside is around 35-40 degrees and the indoor temperature is around three degrees cooler than the thermostat setting. When a system is put on an emergency heat mode, the heat pump is shut off and completely bypassed. Our goal is to help educate our customers in Eastern North Carolina (including Wayne, Johnston, Greene, Lenoir, Pitt and Duplin Counties) about energy and home comfort issues (specific to HVAC systems). The emergency heat setting on your thermostat is set to on. 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. Make sure that you only use the emergency heat feature as temporary solution and not a long-term solution. Having Emergency Heat on can and will be more expensive to run. These supplemental heating sources are things such as the electric resistance heating at the indoor unit, gas, oil or even hot-water back-up systems. If you can’t find your phone you can always make the same changes by using your thermostat. This will provide additional heat as needed. Emergency Heat is typically triggered when it is 35°F and below outside. Heat) on will turn off the heat pump and run the auxiliary heat only. The short answer is that auxiliary heat and emergency heat refer to the same thing, and are somewhat interchangeable. The thermostat will only run the Emergency Heat when the thermostat’s system switch is moved to the Em Ht position. 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. As long as you are comfortable in your home, there is no need to manually switch on your heat pump’s auxiliary or emergency heat switch on your thermostat or control system. In emergency mode, conversely, the heat pump function is totally disabled and the system relies entirely on secondary heating coils. This secondary heat source is typically electric heating coils integrated into the system. Please call to get service when this happens. ** Auxiliary Heat. It’s used when there’s something wrong with your “first stage” heat. Contact us at Jackson & Sons at 919-734-9611. Virtually all heat pump stats, no matter the age, have both an Emergency switch and an automatic Aux mode (although with older stats, the control logic that activates Aux may be poorly implemented). Because electric heating coils consume lots of electricity, heating costs in the emergency mode will increase dramatically if consistently used for long periods of time. It does need to be noted, if your thermostat stays in “Aux Heat” even when temperatures outside rises, you should call to have it serviced.
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