The function of the return side is fairly simple: cold, stale air is drawn into the ductwork through the return registers, it’s pulled through the air filter, then it’s delivered to the HVAC equipment where it’s reconditioned. Quickly shut thermostat off and then on again and problem was solved. The house has a 2 1/2 ft crawl space - no basement. The return air vent where you feel the cold air coming from - if I read you right it is located downstairs in your living area. When contractors first installed central air, they put in a single big return vent somewhere central in the house. Seems anytime the heat is on, it's nice and toasty in the house, but when it's off, there is … The return air vent openings need to be on the opposite side of the room so the conditioned air is pulled across the room. Another reason for the room to experiences no airflow may be that it’s too far from the unit and this implies that you have an underpowered AC. When a heat pump begins the defrost cycle, the outdoor fan shuts off and the system switches over to cooling mode. The very first thing you should do when you start to notice that there is no air coming out of a vent in your home is to try to open or close the damper, just to make sure that it is working. Is there any way to reverse this? Why is cold draft air coming out of the vents? I had the same problem with cold drafts coming thru the ac vents that are not used for heating in the winter (I too have baseboard hot water heating and only use the ac and ducting in the summer). The return air vent is located near the thermostat so that the air drawing into the heat pump system closely matches the temperature displayed on the thermostat. Perhaps the most common cause for a room not responding to your heating/cooling system is blocked vents. These are the vents that are usually on the wall and they do not have a control mechanism to open or shut their flow. An … The causes of this problem and the best solutions reveal some of the basic physics of chimneys. Most bathrooms have an exhaust fan to replace hot, wet air with cool dry air. The answer may be your return air grills- also known as “cold air returns”. Favorite Answer. Try closing some air vents in bathrooms, … Your first step is to check … (STOP AND DO THIS EASY FIX FIRST) Restrictions can come from several places in a heater; one of the most common restrictions is from a dirty filter. 6 Answers. It may seem over simplified, but check your air filters and see if it’s … The sound you hear is the reversing valve switching your unit over to cooling mode. Instead, it sucks up the air and returns it down the ducts to the air vents to be blown out again. There is a small plastic device called a damper flap that regulates the flow of air – in … Just purchased a condo in AZ. This could be the result of cold air pushing through the system. 2. Most pros recommend insulating your ducts up to the floor vents. In my home the air filters are located just inside of the two large return air registers. When a fire is being burned in a fireplace or heating stove, the air or gas in the chimney flue is warmer than the … Having several return vents (ideally one in every room, but even two or three is better than just one) creates consistent air pressure. … A cold-air return is a vent that sucks cold air into a furnace so that it can be heated and brought back to a room through a furnace register. more restrictive) air filters, the noise from the air being pulled in increased dramatically to the point of being annoying. … But … Don't know brand or if it is a heatpump - think it may be since it is one unit supplying AC and heat. Why Is My Furnace Blowing Cold Air? For Immediate Service Call: 616.232.6440 Grand Rapids’ Top Choice for Over 30 Years Is it low on the wall, high on the wall, or in the ceiling? I hope all these people who say they don't know what that is have been opening that up and replacing the air filter in it around once a month or so, or their air units will not be any good after a while. If you haven't had anything done to the system, and have test the system the way I said, this isn't something new, just an adjustment to the damper valves on the duck pipe running from your heater to this area you're concerned about. The Role of Cold Air Returns. One thing you can try immediately is this: remove the grill covering the return where you feel cold air entering the room. The heating and return ducts are below under the floor boards of the house in the crawl space. Poor insulation causes rapid cooling of the air as it moves through your home. Why is my furnace making a popping sound? You may have noticed a loud sound right before cold air blows out through the vents in your home. How … Let’s say you have crawl space under your home where some of … These vents are seen in many types of furnace systems, although there are alternatives, such as drawing air from the outside or from the area around the furnace. Other vents that are on the other side of the … This pulls the air across your body. The return vent pulls cold air from the bottom of the room and returns it to the furnace to be reheated and returned as warm air. All that the cold air return … Thethermostat is directing the performance of the heat pump. The reason that a back-draft occurs is the same reason that air moves any where there is higher pressure one end than the other, if the main part of your home is at a lower pressure than that in the return you will have a draft from the cold air return, so look for any exhausts that may be on or chimney vents , anything that vents out of your home. Cold air return vents work by allowing cool air to be suctioned into a furnace or heating/air conditioning system. The major benefit of drawing inside air is that it is closer to the desired room … Instead I pulled out the filter from my air handler (which like yours is also in the attic) and … Depending on the design, each room in a house may have a return, or they may be … They can be placed into staircase cavities, stacked closets that run one on top of the other, or in stud cavities in the wall. If you … If you are having problems feeling the air coming out of your home's vents you will be surprised to know there could be several reasons. Keep the doors to each room open so air can properly circulate. Is it a hazard to block an furnace vent? If you have one return vent, your home is fine. You’ll need to figure out how far the mold has spread. I have this one bad draft that I couldn't pin point until I realized it's cold air coming from out of the return air register located in the living room (couch nearby ). When the heat is on, the warm air blows, but otherwise, it's blowing cold air - it almost feels as if it's A/C air. The cold air return ductwork is as important to your home’s heating and air conditioning as the lines coming out. Answer Save. This post will explain what causes cold air to come out of the vents when you have your heater on, when warm air should be coming out instead. Let’s look at some common issues that would cause your furnace to blow cold air. Track the distance between this vent and your AC unit. Relevance. The Flame Sensor is Dirty. Especially if your furnace is blowing cold air. Does the HVAC that this return vent is connected to reside in the attic, basement, or crawl space? Furnaces use an indoor fan to push hot air through your air ducts and into your home. My question is; When the furnace comes on, the return cold air ducts are BLOWING NOT SUCKING COLD air into the house. Thermostat says it's 80 in the house and it has been that way for the last 6 hours. Where one return vent serves an entire zone, air space should be provided under doors so that … Do the same with the rest of your home’s vents and ducts, using a bright flashlight when necessary. There are many issues that can cause your heater to blow cold air. My air out the supply vent is 66F, at the return it's 76F. Several issues could be going on with your home’s heat. If this happens, make sure that the particular room’s air vent is fully open and not accidentally closed or left partially open. The other day, we noticed it was drafty (our house is cold anyhow in general) and I found that cold air is coming out of the air vents when the heat is not on. During this time of year, our crew gets many calls regarding cold air coming into homes from the fireplace or stove. Clean the Condenser Coils & Draining Pan. I have 3 returns and a lot of supply vents and covering each one individually would be time consuming and not practical. Unlike supply vents, return vents do not need to be cased in metal. Cold air coming out of duct work. The Pilot Light is Faulty. The thermostat is reading the ambient temperature of the space. If the sensor’s dirty, there’s no way to recognize signals that show the burners are on. Typically it is best to have an expert come take a look however, below are some common issues that can result in your furnace blowing out cold air. My air guy says it is running the … Some cold air returns draw air from outside and some from inside the structure. When I installed “better” (I.e. But that fan … One is that you want air recycled from the rooms you are heating or cooling. The cool air is then heated or cooled, depending on the system setting, and forced back out into the home or building. 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