New comments cannot be posted and votes cannot be cast. Most “smart thermostats” are also designed to work with common heat pump configurations. Systems with two stage cooling or a heat pump will have wires in the Y1 and Y2 connectors. 1In heat pump mode, this system setting is also the auxiliary heat setting. Knowing the difference between your heat pump’s auxiliary heat and emergency heat will help address the question from above. If YOU want change, YOU have to first change. The compressor is what drives … Furnaces are powered by electricity, but they still use use natural gas a fuel source. If you are looking for peace-of-mind, be sure your installation technician provides a limited warranty for their work and is qualified, experienced and recommended by a trusted source. For example, if you live in an area with long, cold winters, a heat pump will run more than in temperate climates. Heat Pump Stuck in Aux Heat Mode. This is the heat you get when the compressor runs. 3. EM heat is an option on your thermostat that you can manually turn on to activate backup heating. Auxiliary heat can handle more extreme temperatures since it uses electric heat strips. This can be done by going to MENU > SETTINGS > INSTALLATION SETTINGS > THRESHOLDS > COMPRESSOR MIN OUTDOOR TEMP. Our 20th year anniversary is May 21, 2020. Traditionally, almost everyone has considered the heat pump to be a poor candidate for night setback. Electricity is inherently less energy efficient than running the HP. Close. Typically, your heat pump will energize the auxiliary heat strip inside your secondary heating source to help reach its set temperature more quickly. I have a Lennox unit and my ecobee4 asked me if I wanted to allow the heat pump and auxiliary to run simultaneously? Because consumers have many more auxiliary heat options to work with for augmenting heat pumps, this allows them to experience a winter or two in a milder climate zone without the feature before committing to the extra investment, whichever one it may be. They also support several stages of heating and cooling and can run the heat pump and auxiliary heat simultaneously to maximize comfort and reduce overall energy costs. If your heat pump is constantly running, there are likely three main causes: Unusually cold weather: Heat pumps are designed to work much more gradually than a furnace. You might notice your heat pump runs constantly in cold weather. The system is designed so that both can operate simultaneously. The reason for this is that a heat pump does a very good job of maintaining temperature, but is very poor at recovering temperature. 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. This applies to a heat pump with electric back up heat. In a package system the heat pump may run simultaneously with the AUX heat. To start, the job of a heat pump is to take air from the outside your house, warm it and then blow it throughout the different parts of your home. That's why it is called auxiliary heat it supplements the primary heat. Yes... we are 20 years old. Allow Heat Pump/Auxiliary Heat to Run Simultaneously: If you select Yes and there is a source of auxiliary heat, both auxiliary heat and heat pump will turn … Meanwhile the heat pump has been running non-stop throughout this time to maximize the cheap heat. So in cold temperatures, the heat pump runs non stop to maximize your cheap heat but your home may remain a degree or two below your thermostat … Some heat pumps also have auxiliary heat, an additional stage of heating that is typically used when the heat pump compressor can’t keep up with cold weather conditions. Post photos, respond to polls and access other special features. A subreddit for ecobee and all their smart home products. It is the ratio of heat produced to the amount of energy required to run the system. This is thought to be because of the need to use electric strip heat to return to the day setting in the morning. Components Coils, Heaters, Motors, etc. Press question mark to learn the rest of the keyboard shortcuts. Compared to heat from the heat pump (COP 2.0 or 2.5) the auxiliary heat (COP 1.0) is quite expensive. Participate in over 40 different forums and search/browse from nearly 3 million posts. Question. Was that right? Scenario 1 – Cool Air Blowing from Registers. Actually this is not the case. Your thermostat is calling for a high temperature increase (2–4°F) The heat pump is in defrost mode. Heat pump running constantly. Question. AUX heat mode is normal when: The temperature outside is below freezing. However, I don't understand why you have a heat pump as primary heat. A heat pump has two stages of heat. However, when the outside temperature is 32° F or below, your auxiliary heat will usually turn on automatically. The home temperature raises to a point just short of the thermostat set point and then the auxiliary heat turns off as soon as possible. As we mentioned above, heat pumps absorb heat from the outdoor air and then move that heat indoors. Another reason you may see the auxiliary/emergency heat come on is when it is unusually cold outside for an extended time. Auxiliary heat kicks on when your heat pump can’t produce enough heat to warm your home by itself. I chose disable because it sounds safer. 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. The auxiliary heat pump should run more often when the temperatures outside dip below freezing. Archived. Once it gets close to the actual setpoint, the aux heat de-energizes and the heat pump mode of the system remains operating to generate heat and will shut off if the temperature is satisfied. A heat pump is usually powered by electricity, although there are heat pumps that run on natural gas, propane, or even solar or geothermal heated water but those are not found in residential use. In this setting, the heat pump will lock out before the fossil fuel auxiliary heat comes on; eliminating the need for a dual fuel kit. First off, AUX heat refers to your heat pump’s auxiliary (backup) heat source. Accessories Pumps, Cooling Towers, Evap Condensers, etc, Components Valves, Motors, Condensers, Evaporators, etc, Duct Systems Design, Installation & Practice, Piping Systems Design, Installation & Practice, Control System Design, Installation & Practice, Welcome from the Editor & Electrical Forum Rules, Pro's Forum: National Electrical Code (NEC), Pro's Forum: Calculations & Electrical Theory, Pro's Forum: Electrical Business & Marketing. This is because your outdoor heat pump will have a more difficult time creating enough warm air to heat your home. This is allowable because the indoor coil (condenser in the heating mode) is upstream of the AUX heating elements. Homeowners who notice their auxiliary heat rise as the temperatures drop may not have a … NO HEAT – The space temperature drops more than 3 degrees below the thermostat's heating setpoint.. I don’t have gas and I’m in south Louisiana where it doesn’t get crazy cold, if that helps? Before you call for service, make sure the heat pump isn’t accidentally set to a/c mode, and that the set temperature is correctly set at the thermostat. Your auxiliary heat supplements your heat pump’s heat––it doesn’t replace it. 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. If utilizing a fossil fuel auxiliary heat system, set to Gas or Oil Furnace. Yes, I am all electric so I should enable it? That’s just how the heat pump … Heat pump and heat strips on simultaneously? I chose disable because it sounds safer. This wire is usually found in the W2/AUX connector on your thermostat. I have a Lennox unit and my ecobee4 asked me if I wanted to allow the heat pump and auxiliary to run simultaneously? Well if you don’t have gas then what is your auxiliary heat? It’s normal for your heat pump to switch to AUX heat when…...The temperature outside is below 35° Usually, once outdoor temperatures fall below 35°, a heat pump will struggle to keep your home warm and will automatically switch to AUX heat. Posted by 2 years ago. 2. No-frills heat pump systems without the auxiliary heat capability sometimes make that feature an add-later option. What this means, unfortunately, is that it’s more expensive than the conventional heat provided by a heat pump. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions. Press J to jump to the feed. 0. Allow heat pump and auxiliary to run simultaneously? Prolonged use of aux heat can cause your … They will both be running when the need for auxiliary heat is there. For better energy efficiency and comfort, change this setting to “Run heat pump and auxiliary heat simultaneously.” This way your auxiliary heat will supplement your heat pump rather than replacing it when the temperatures drop outside. Make sure that your thermostat is properly paired with your heat pump. The same goes for warmer climates. It’s possible that, if the weather is especially cold, your heat pump could run near-constantly without there being an issue. Auxiliary heat is less energy-efficient than your heat pump, and it is meant to only run for short periods of time when temperatures drop. As long as the HP is producing some heat, it's more efficient to use the HP for whatever Btu's you can garner and allow the aux heat to be just that, auxiliary rather than primary. Pumped heat. There … Heat pump running constantly in winter. The primary (1st) stage is the heat pump itself. COP: COP or Co-efficient Of Performance is a way of describing a heat pump's efficiency. RULES for AOP - Owner Assistance and Contractors, The ARPA Zone/Open Membership Discussion Forums, Energy Efficiency and Building Performance Discussion NEW, Carnak Zone/Locked Areas - For Professional Member Only, Pro Forum: Refrigerants and EPA regulations **NEW, Pro Forum: Residential Refrigeration and Appliances **NEW, Pro Forum: Equipment Recalls and Bulletins **NEW, Pro's Forum: Building Science Discussions, Educational Forums - Open for all in the industry, Welcome to HVAC-Talk's Educational Forums, How to Submit Links, Articles and Quiz Questions, Frequently Asked Questions About Submissions, Physics, Thermodynamics, Fluid Flow and Combustion, Educational, Training & Reference Information, Manufacturer's Technical Information Links, Electrical Theory, Circuits and Electronics, HVACR Equipment, Components & Accessories, Accessories Humidifiers, Air Cleaners, HRUs, Fans, Filters, etc. Aux heat comes from the same heat source as emergency heat, but aux heat works together with your heat pump, so it’s less expensive than emergency heat. Most heat pump thermostats bring on the back up heat when the temperature difference between the room and that thermostat setting is 3 degrees or more. This is set at a default 35F (1.7C), so the heatpump will not be used when the weather outside is below 35 degrees Fahrenheit and only aux heat will be used in this case. If your heat pump seems to be stuck on auxiliary heat mode and the temperatures outside are above 35 degrees, you should call the professionals at Precision Heating & Air. Allow heat pump and auxiliary to run simultaneously? In other words the indoor coil can reject heat into the return air stream. They will work in tandem when the temperatures drop to those cold numbers. The ecobee asked this cause it assumes you have aux heat, is it electric? Difference Between Auxiliary Heat and Emergency Heat. Letting the heat strips run all winter might keep you cozy, but it definitely has the potential to put a chill on your finances. 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