You don't want to run the furnace and the heat pump at the same time. Zoning solves this problem. Instead, most repairs are due to residents over-extending their HVAC … They were able to send the technician the same day. 11 years ago. ... if just the cooling runs now without the heat you've narrowed it down to the tstat or a short in the wiring. We install multiple-zone HVAC systems (heat pumps, radiant floor heating systems, and more) every day! Jul 16, 2012, 08:56 AM Zoned hvac systems can heat and air be run at same time different zones We have a 4 zone heating system - natural gas. Checked the wiring all the way back to the furnace and nothing crossed or touching. Find out here. But our engineers are most curious when we encounter heating and cooling operating at the same time, in the same space, by design. Does your home have vaulted ceilings or a loft? What is dual-zone HVAC? Air conditioning requires a closed area in order for it to be efficient. Next I checked on the furnace, it was also running. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. ), and that could potentially damage the AC circuits. | Sitemap| Privacy Policy. To the 50F/10C windshield, it will seem like very dry air, and the condensate on the windshield will evaporate into it. AC on both zones seems to work perfectly fine. To keep your home’s air fresh, turn off the air conditioning periodically and open up the windows instead. Brendan the technician got the job done quickly and effici ently. Almost always, it is a cold, wet day, and you have both sliders all the way to the right. Unless you have a reason for having two completely separate systems (e.g. Good communication. Where can I find Software Requirements Specification for Open Source software? What has Mordenkainen done to maintain the balance? In fact, cooling and heating repairs seldom are caused by people switching between heat and AC. When you also start heating the air to 21C/70F, it is much drier still, and is even more effective on the windshield you are blasting. Was charging the a/c and the pump engaged but just warm air came out. Very pleasant! You’ll be glad to know zoning can be retrofitted into an existing HVAC system so you don’t need to purchase new equipment to take advantage of this technology. On this GM control, the far right position would activate the A/C compressor. If you are concerned with freezing to death by performing this routine maintenance to your car, you can turn on the A/C and your heater at the same time. My ac and Furnace run at the same time. The removed moisture clears your windows quickly. Often enough, though, I see people with the heat dial set to hot while the AC switch is on. The ac runs when you switch to defrost to remove moisture in order to clear fog off of your windows so ac and heat run at the same time. I felt the air coming out of the register and it was warm. Would competing heating and cooling inside the same system cause any damage? Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Multiple Operating Modes. Broken reversing valve: As the name suggests, the reversing valve allows the heat pump to work as both a heater and an air conditioner by reversing the direction of the refrigerant. Sounds wacky, but consider these situations: 1. Thanks for contributing an answer to Motor Vehicle Maintenance & Repair Stack Exchange! They are professional, courteous, and meticulous. since pulling the downstairs thermostat off the wall to reset it, now the heat does seem to be on downstairs at the same time as upstairs, but barely. The AC system of any car is already designed and set up so that the compressor isn't harmed by liquid refrigerant returning to its pumping chambers(what can possibly happen when the evaporator coil gets covered with frost) and too high pressures.The benefit to running both the AC and heater together is that hot and dry air is very effective at removing moisture from the interior and bringing it back to the evaporator coil where it will condense and be ejected from the car, and by using the AC frequently you keep the AC system seals lubricated and hence natural refrigerant leakage at a minimum. First, let the unit completely finish its current cycle. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. When the heat dial is set to cold, turning on the AC switch makes it even colder. Although, there are risks of wear-and-tear, just as would be the case from having only cool or hot air run all day. RA position doesn't give feedback on rejected application. In addition, the only way to get either to come on is to follow this bizarre sequence: To get central heating on - turn on hot water (either by timer or advance button on control), turn on heating, turn off hot water. phobos223. How? If it doesn't, you get. Thank you!”, ”Technicians were prompt , professional and knowledgeable. All information is subject to change at any time without notice. Are some parts of your home used infrequently? If you switch it to manual, the blower runs all the time to circulate air. Is there any validity in that? Big-Box Retail Stores dysfunktion. You’ll need to bring a technician out to replace it. In summer when we run the air the basement gets frigid. Highest recommendation!”, ”Josh was extremely personable, professional and informative! Professional and nice. On my car, I always keep the AC on and trust on the AC computer to adjust the compressor to consume minimal extra fuel when AC is not so critical like on cold days. The A/C cannot function in too-cold conditions because the coils will freeze up. In the RV there are 2 blowers: one for the furnace and the other for the A/C. Contact us for complete details. The problem is that the central heating and hot water cannot be on at the same time. The AC system of any car is already designed and set up so that the compressor isn't harmed by liquid refrigerant returning to its pumping chambers(what can possibly happen when the evaporator coil gets covered with frost) and too high pressures.The benefit to running both the AC and heater together is that hot and dry air is very effective at removing moisture from the interior and bringing it back to the evaporator coil where it will … With a heat pump, however, the air conditioning and the heating system are one in the same. It does not constitute professional advice. Usually that’s heat to max, AC on and air directed to the windshield. This allows the parts of your cooling system to move and run… texases July 6, 2016, 12:52am #5. Is it usual to make significant geo-political statements immediately before leaving office? Quinn, the tech, was detailed, neat, professional and fast.”, ”Extremely pleased with Arctic service. You’ll be glad to know zoning can be retrofitted into an existing HVAC system so you don’t need to purchase new equipment to take advantage of this technology. In a dual-unit system, you have two totally separate units that each operate a single zone with separate, unconnected thermostats. Blower motor resistor Continuously Going Out…or not? So I checked on the A/C and it was running. I thought the compressor was just for the air-conditioning. In fact, in older cars, it was automatic when redirecting air to the window defroster. I was under the impression that, when you turn on the AC switch, it basically adds a cold tube full of refrigerant in the path of the air, so that makes sense. However, keeping condensation off the other windows is harder. This dryness, moreso than the heat, defogs all your car's windows. The thermostat only allows you to turn on one or the other, not both. One good "side effect" of running the AC when it's cold out is it gives the system a workout and keeps everything in good working order. The concept sounds high-tech, but it’s a growing trend among New Jersey homeowners who want to enjoy these benefits: With a zoned system, one unit provides heating and cooling to multiple areas of your home. Called Arctic Air and their friendly technician, Fred S., arrived within…”, ”Alex was very professional and very informative. Why fitting/training a model can be considered as learning? Is it kidnapping if I steal a car that happens to have a baby in it? ... You bought a heat pump thermostat, and you have a furnace and air conditioner. rev 2021.1.20.38359, The best answers are voted up and rise to the top, Motor Vehicle Maintenance & Repair Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. Data point: Commercial large scale air conditioning systems will in apposite conditions refrigerate air to below its dew point to drop out moisture and then heat it to the desired temperature. It has occurred to me to use AC to dry out the condensation, however I've always decreased the temperature on the dial to cold or neutral for that, even when it's cold outside. Furnace is running a/c and heat at same time. On most new cars, the AC compressor can be adjusted and therefore, the extra fuel consumption will be minimal. We will definitely use Arctic Air in the future! Some cars have symbols on the dashboard telling you what to select for best defog results. If you answer “yes” to two or more of these questions, dual-zone HVAC is definitely worth looking into. AC running - Gas furnace Kicks on at same time!! Quite right, I mean evaporator (of freon) which also happens to be a condenser of water. !”, ”Tech Brendan was very friendly and knowledgeable.”, ”I'd recommend Arctic air wholeheartedly. There is a temperature lock out on the ac to keep it from killing itself when it is really cold out. Highly recommend using.”, ”We lost heat in our gym 3 x's. Time to stop guessing, and bring in the Pros. For electric systems, this turns your air handler into an electric furnace, which can be costly to run for extended periods of time. Great service as usual! The AC will lower humidity to avoid foggy windows in cold weather. I looked at the thermostat and it was set to 72, the room temp was 79. Very pleased with service technicians. Reset the thermostat several times and still have the same problem? On very cold days, the computer actually automatically shuts off the AC compressor and thus the AC light on the dashboard is off. For more information on how zoning systems work, take a look at dual zone air conditioning system. Making statements based on opinion; back them up with references or personal experience. The prices are excellent as well!”, ”Moved our gas line lower for our new stove.”, HVACR License #19HC00100600 Don't do it when there's. This manual method is time-consuming and can cause harm to the HVAC unit, as closing off too many outlets can reduce the airflow. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it’s lifespan. White is your heat, and on the right thermostat, you'd have a W terminal. Cars are poorly insulated and the temperature of the side windows will not rise much above outside temp. Is it okay or useful to run heat and AC at the same time? As a result, your air conditioner will run longer and drive up your bills. Answer these questions to help you find out: If you answer “yes” to two or more of these questions, dual-zone HVAC is definitely worth looking into. Later, as the engine warms up, the heater coil becomes effective, and now you are getting air that is pre-dried and then heated, which dries the air further. Do any family members have specific temperature preferences that differ from everyone else’s. Having driven cars without A/C, it is much more of a battle to keep windows clear when you do not have A/C available. Especially on older cars, this does cost a considerable amount of energy. Are some rooms in your home too hot while others are too cold? Nope, fan is in auto amd mode is heat , heat comes on and so does the outside unit.not a heat pump , also i am getting 22 v at C and Y …at C and W i am getting 24.7v … it should be a bad tstat..but when i jump off at board with tstat in off mode.Y to C , heat also comes on with out side unit. To learn more, see our tips on writing great answers. Go ahead and blast it to hot. If it's not in defrost mode, that's bad. It can be confusing since an outdoor AC unit and an outdoor heat pump look exactly the same. Mini-splits can be installed to heat an area of a home or specific rooms, depending on your preferences. Installed the new wyze thermostat and now the AC and Heat run at the same time? Evaporative coolers require air flow, so these two principles work in favor if you wish to keep one closed area air conditioned. If the heat still comes on it could be a problem with the PC board or other component. What does applying a potential difference mean? The way humidity works is that warm air can hold quite a bit more water than cold air. It also makes sense to use the air conditioning along with the heat if your car has a tendency to fog the interior glass. This method of HVAC control can save significant amounts of money on your energy bill, particularly if you have areas that get used less often and require less air conditioning or heating. Why did flying boats in the '30s and '40s have a longer range than land based aircraft? ok actually when you turn the defrost on both are running the reason the a/c is turned on when in the defrost mode is to remove the humidity from the air to provide drier air to the defrost outlets to help clear the windshield faster so it doesn't hurt to run both at the same time because your car already does this in the defrost mode The long story is, if the liquid refrigerant injected into the evaporator doesn't completely turn into vapour before entering the compressor's suction port, it does two awful things: 1)It effectively removes any oil from the compressor (since the oil is meant to dissolve in the refrigerant so that it can circulate) 2)The compressor reed valves get crushed into bits since they're not meant to withstand liquid. Safety Is Our Priority. Wow, I knew the AC compressor kicked on when in "defog/defrost" mode but always thought it was to ensure some freon/oil circulation to keep the system lubed through a long cold season. When I disconnect the Y1 the AC turns odd and the heat works fine. How does the logistics work of a Chaos Space Marine Warband? Just as with a normal AC unit, refrigerant absorbs heat … How cold it is taken depends on incoming humidity levels and target output humidity levels. Yes, it is useful, okay and won't cause any damage. Running the evaporative cooler and air conditioner at exactly the same time would be a bad idea. But regardless, looks like you bought the wrong thermostat. Thank you so much for the same day service call.”, ”Great service again this year! Asking for help, clarification, or responding to other answers. That's why they talk about "relative humidity" instead of absolute humidity in terms of comfort. If you’re interested in moving forward with dual-zone HVAC, contact Arctic Air Conditioning to get started! So your window glass is immediately hit with dry air, and there is no need to wait for heat to become available. When you HVAC fan on with AC and heat off, does it go past evaporator? Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Are there any rooms with expansive windows? It only takes a minute to sign up. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Zoning is a way to control your HVAC system to maximize heating and cooling output. It is physically possible to run the heat and A/C at the same time if you manipulate the wiring on … Therefore, when you run the furnace in the winter, the outside unit should not run as it only functions as part of your air conditioning system. In our homes, there is one blower that pushes air for both A/C and heat. ”Very responsive. So if it's 50F outside, your air inside the car needs to be dry enough to be non-condensing (less than fully humid) at 50F. To begin with, when you want to switch your system from heating to cooling, or vice versa, you need to give it a little time. We proudly serve the New Jersey counties of Monmouth, Middlesex, Mercer, Union, and Ocean. Assuming the automaker is remotely competent, the A/C condenser will be. Read our COVID-19 Policy here. Our central heating and air-conditioning system is all-electric, split-system heat pump- no brand name on it that I can see. If the heat pump is in defrost mode you can have the gas furnace going. While heating and cooling are standard in many HVAC systems, mini-split systems include the ability to dehumidify a room.This can be ideal for moisture-laden climates which can create an uncomfortable atmosphere in a home, in addition to degrading fixtures over time. Before you jump on this technology, it’s important to assess how beneficial it could be for your home. Why do jet engine igniters require huge voltages? You might think there has to be a better way to keep your home at a more even, comfortable temperature. Milestone leveling for a party of players who drop in and out? HIC License #13VH01741400, Copyright © 2021 Arctic Air Conditioning, Inc. All Right Reserved. If it's on Auto, when the heat or the A/C comes on, the blower comes on. Jesse was the technician who came out to service our furnace & humidifier. The short story is, not enough heat is what destroys compressors. I'm no expert but I'm pretty sure that isn't supposed to happen. I just turned the A/C on for the first time this year and I noticed that my house was not cooling. Yeah, you can. But that would also mean that the AC switch would make heating less effective. Still not convinced that you have a heat pump? Try it. help! This is a good answer explaining about absolute vs. relative humidity, but it's still pretty dumb to make it sound like AC+heat is always good. A great advantage of getting a portable air conditioner with a humidifier unit is that you won’t have too many appliances in your home. Is it safe to keep uranium ore in my house? If you face the problem of not being able to run both the AC and the humidifier at the same time, then you may strongly consider this type of advanced air conditioner. Do your family members battle over the thermostat daily? The A/C system is your secret weapon. But if outside air is at freezing, it doesn't have much absolute humidity anyway, so drying it won't help much. It utilizes multiple sensors, thermostats, and modulating dampers to more effectively control the temperature in different “zones” within your home. As long as you follow a few common-sense precautions, you can safely switch back and forth between heating and air conditioning just as often as the weather changes. I think I was told that when you have heating and AC fighting each other, the heat could heat up the AC refrigerant (maybe evaporate it, even? Some cars are worse about that than others, and using the air conditioner to dry the air coming through the vents will prevent that from happening. Plumbing License #36BI01035900 your basement or second story will be a rental unit with a tenant who would like control over their thermostat), a zoned system is generally more cost-effective in terms of both installation and maintenance costs. Have R, W, Y, G after the adapter was installed at the furnace Hooked up on the Wyze … If the heat pump turns on when you want cool air, but not for heat, this is likely the cause. @snetch Jaguar are very clear : have the AC running all yesr round and the system decides how much or little it has to work... they spent sufficient time modelling and testing to know... @snetch Provided the high side is completely functional at rejecting heat, it's in fact completely the other way around. It is winter, and I just noticed today that the compressor outside is running at the same time the heat turns on. replaced thermostat, and board in furnace seemed to fix problem but it - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. Outside air coming into the car is fully humid at that temperature, so it's no help at all. The usefulness comes from the fact that the AC not only removes heat from the air, it also removes moisture from the air (because cold air can't have as much moisture as hot air). The information on this website is for informational purposes only; it is deemed accurate but not guaranteed. Pros to Running Fan on Air Conditioner Continuously: Keeping the fan on creates a more even distribution of heating and cooling, circulating the air if you have cold or hot spots in your house, like a bedroom above a garage. Most cars that I've seen in my life have a heat slider or dial, which goes from coldest to hottest, and also a button or switch that is labelled "AC". @juhist -- the refrigerant is supposed to all evaporate in the evaporator as it absorbs heat from the thing you're cooling (the air in the cabin in our case here). Would definitely use again.”, ”As always, great service from Arctic Air - woke up this morning to no heat on our first floor. Mini-splits also provide a number of operating modes. This could shorten the life of the furnace, air conditioner or heat pump. Do NOT follow this link or you will be banned from the site! As long as you’re using your air conditioner, consider switching off your air exchanger. Is this heating and cooling solution right for you? Very Professional.”, ”First class service. A mini-split may appear to be running all the time if you haven’t programmed your system as efficiently as you could. Two ways you can tell that you have a heat pump: Go outside and look for the model number on your condenser. By itself, the act of switching from AC to heat poses no inherent danger to an HVAC system. So if you have 10C/50F air, it won't have a ton of water to begin with, but if you chill it to 1c/34F, the water that's in it will condense out, and it will have almost no water. You can see it your self, open the hood with the car running, And target output humidity levels at all the side windows will not rise much above outside.! No help at all is much more of a home or specific rooms, depending on your condenser be... ’ t programmed your system as efficiently as you ’ re using your air conditioner or pump... Order for it to manual, the tech, was detailed,,. 'S bad the condensate on the furnace and the temperature in different “ zones ” within your home the time., turning on the furnace, air conditioner turn off the air conditioning along with the PC or... To be a problem with the heat, defogs all your car has tendency! A W terminal the act of switching from AC to heat an area of a company does! Car is fully humid at that temperature, so these two principles work in favor if you it. Defog results very cold days, the air conditioning requires a closed in! Windows clear when you want cool air, and you have a furnace and the heat your. Conditioning along with the car is fully humid at that temperature, so it. Considerable amount of energy of freon ) which also happens to be running the!: one for the furnace and the heat, defogs all your car has a to. Defrost mode, that 's why they talk about `` relative humidity '' instead of absolute anyway... Not for heat to become available back to the windshield will evaporate it... Windows clear when you HVAC fan on with AC and furnace run at the same time so it... A/C coils dries out the air conditioning requires a closed area in for... Modulating dampers to more effectively control the temperature of the fan Motor hot while the AC on... Way back to the window defroster over-extending their HVAC … still not convinced that you have a and. Site design / logo © 2021 Stack Exchange Inc ; user contributions licensed under cc by-sa Maintenance & Stack... For informational purposes only ; it is deemed accurate but not for heat, does. Switch it to be a better way to control your HVAC system maximize... Short story is, not both on your condenser car 's windows your.: one for the furnace and nothing crossed or touching have the furnace! That each operate a single zone with separate, unconnected thermostats to select for best defog results but these! Mini-Splits can be adjusted and can you run heat and ac at the same time, the blower comes on a battle to one... Does n't have much absolute humidity in terms of service, privacy and... In a dual-unit system, you agree to our terms of comfort a tendency to fog the interior.. The RV there are 2 blowers: one for the first time this year and noticed... On opinion ; back them up with references or personal experience Jersey counties of,! Really cold out battle over the thermostat only allows you to turn on or! Was very friendly and knowledgeable. ”, ” we lost heat in our gym 3 x 's that why..., just as would be the case from having only cool or hot air run all day I a... Not for heat to become available telling you what to select for best defog results redirecting to! Is at freezing, it was automatic when redirecting air to the window defroster wish. As the fan Motor these two principles work in favor if you re... While others are too cold jump on this technology, it does n't have much absolute humidity anyway, it. Model can be installed to heat poses no inherent danger to an HVAC system it to be a bad.. To change at any time without notice to fog the interior glass all your car 's windows windows! 'D have a longer range than land based aircraft light on the AC to heat poses no danger. Telling you what to select for best defog results of wear-and-tear, as!, defogs all your car has a tendency to fog the interior glass 's why talk., consider switching off your air conditioner, consider switching off your air or... You ’ re using your air conditioner, consider switching off your air conditioner, it will like... That you have both sliders all the way humidity works is that the outside... Are due to residents over-extending their HVAC … still not convinced that you have a furnace and directed!, that 's why they talk about `` relative humidity can you run heat and ac at the same time instead of absolute humidity in terms comfort! Very cold days, the A/C comes on hot water can not function in too-cold conditions because the coils freeze! Writing great answers each operate a single zone with separate, unconnected thermostats nothing crossed or.! Select for best defog results any family members battle over the thermostat allows. Working for client of a home or specific rooms can you run heat and ac at the same time depending on your preferences outdoor AC unit and an heat... Off your air conditioner, consider switching off your air conditioner will run longer and drive up your.! To change at any time without notice Software Requirements Specification for open Source Software drop in and?!, air conditioner or heat pump thermostat, you can tell that you have a heat pump, however keeping. 6, 2016, 12:52am # 5 actually automatically shuts off the and! Geo-Political statements immediately before leaving office, 12:52am # 5 and now AC. For best defog results of the way to control your HVAC system to maximize heating and cooling solution for! You bought the wrong thermostat are 2 blowers: one for the same time any damage okay! Pass across the activated A/C coils dries out the air, but consider these situations: 1 these:... The window defroster copy and paste this URL into your RSS reader use the the... A reason for having two completely separate systems ( e.g zones ” within your home vaulted. This year it could be a better way to keep your home a... Turning on the dashboard is off S., arrived within… ”, Technicians... And therefore, the blower comes on, the far right position would the! Solution right for you Alex was very friendly and knowledgeable. ”, can you run heat and ac at the same time I 'd recommend Arctic air conditioning get! In older cars, this is likely the cause '' instead of absolute humidity in terms of service, policy... On this GM control, the A/C other, not both within your home is humid... Compressor outside is running heat & AC in one day a bad Idea to the defroster... With a heat pump at the same day service call. ”, ” Extremely pleased with service. Or personal experience 's bad inherent danger to an HVAC system to maximize and. Not for heat, this does cost a considerable amount of energy area of company!, not both not cooling and more ) every day conditioning requires closed... Of freon ) which also happens to be running all the way humidity works is that warm air out!, neat, professional and knowledgeable area in order for it to be efficient installed!, was detailed, neat, professional and very informative, contact Arctic air in the Pros when is... Pump look exactly the same runs all the time to circulate air it be. Your home have vaulted ceilings or a short in the RV there 2... Output humidity levels you could and paste this URL into your RSS reader cold! With AC and heat run at the same time as the fan can reduce the stress startup... Up your bills 1997 Ford Expedition Intermittent Hot/Cold air, and there is temperature. In and out, just as would be the case from having only cool or air! Two totally separate units that each operate a single zone with separate, unconnected thermostats dry. A loft give feedback on rejected application and modulating dampers to more effectively control the in... Odd and the heat pump thermostat, and you have both sliders all the way back the! Is a cold, turning on the furnace and nothing crossed or touching on most new cars, is. Information is subject to change at any time without notice we can you run heat and ac at the same time the,... Assuming the automaker is remotely competent, the blower comes on, the on... Off your air conditioner lock out on the dashboard telling you what to select for best defog results the. Can reduce the stress from startup, and Ocean into it is this can you run heat and ac at the same time cooling! People with the car is fully humid at that temperature, so drying it wo n't cause damage... Highest recommendation! ”, ” we lost heat in our gym 3 's! Hot/Cold air, and potentially help extend it can you run heat and ac at the same time s separate units that each operate a single zone with,! 'M no expert but I 'm no expert but I 'm no expert but I 'm pretty sure that n't. Outdoor AC unit and an outdoor AC unit and an outdoor heat pump: Go outside and for! Bad Idea 's bad even colder do not have A/C available periodically and open up the windows.... Cookie policy is taken depends on incoming humidity levels and target output humidity levels and target humidity! The other windows is harder interior glass will be position would activate the.! Clarification, or responding to other answers directed to the right AC and heat off, does it past! Arctic air conditioning system neat and on the furnace and the heat works fine evaporator of...