10 Sometimes, if the duct leakage is really bad, the air coming from your vents might feel less warm or weaker than normal. In other words, it's not putting out any heat at all. Here’s what to do if you notice cold air coming from your vents: Install insulation. A lot depends on what you consider "almost having the a/c on." If you suddenly notice the unpleasant surprise of your cold air coming out of your vents, several things may be happening to your heater to cause this strange phenomenon all centered on a “RESTRICTION” theme. Check the filter, if it is clogged or dirty, replace it with the same filter and try your furnace out again. Turning it to recirculate is … Though our home’s heating and cooling keep the temperatures and climate within the four walls of homes comfortable, homeowners know your home’s HVAC can be a major headache to address when something goes wrong. Furnace shuts down – Because your furnace has to run longer to heat your home, the heat exchanger overheats, causing the furnace to automatically shut down. I have noticed that when my heating is off in the winter, I can feel cold draft air coming from the vents in my home. Is this an engineered feature to keep air circulating. The colder the outside temperature gets the more air we have dropping from the vents. guests, and 1 It's not much, but noticeable. Bottom line: Don't panic if you have a heat pump and if cold air blows out of your duct work for a little while on and off while you run your heat at home. 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. Infrared thermometer? If your pilot if off, relight if you know how to, if the burners don’t come on, you may need to call your local HVAC. Turned out it wasn't the vents, but the tiny space between the metal of the vents and the wood of the subfloor. So why is cold air coming out of your vents? Several things can potentially go wrong with automotive heaters because, much like a home heating system, there are many components working together to heat your car. Poor insulation causes rapid cooling of the air as it moves through your home. All vents are on the opposite side of the house than the furnace. I bought a 2019 Niro EV a couple weeks ago. The last thing you want from your furnace is cold air on a chilly day in Phoenix, AZ. COLD air coming from heat vents when heat off, Re: COLD air coming from heat vents when heat off, http://www.bobvila.com/HowTo_Library/Insulating_Ducts_for_Efficiency-Insulation-A1780.html, Powered by UBB.threads™ PHP Forum Software 7.6.2. Thermostat set to heat but cold air coming through vents. No heat or cold air coming out of vents. ... the farther away from the heat source,the cooler the air,but you could also have a hole in the air duct as well. It wasn't always like that, so I'm thinking it's something new. Your furnace blowing cold air could be caused by hot air escaping through holes in the duct work that carries the heat throughout your building. New heat pump owners often notice that the air coming out of the vents isn’t as warm as when they had a gas furnace. Several issues could be going on with your home’s heat. 5 Reasons Cold Air Comes Out of Your Vents When You Turn On the Heat There are 3 returns on the 2nd floor, and about 10 supply vents throughout both floors. In the basement (which is finished), cold air is coming from the heat registers, quite noticeably, and when the furnace isn't running. fans work (1999 Cadillac Seville) All the lights indicate that the heater and air-conditioner should be working. Answered. Items in red usually require a service call. The driver's side vents were blowing out hot air, and everything else wasblowing cold. Several issues could be going on with your home’s heat. I set desired temp to 70. The answer may be your return air grills- also known as “cold air returns”. spider. I usually have the windows down if the AC is off so I guess I never noticed. 2004 Chevy Tahoe. If everything seems to be in proper order on your thermostat, move on to the next step. You’re cold, and you’ve got the heat pump running. , there might not be a problem at all accessable or are they sealed in smaller... Exterior wall door actuator and they both are working from from vents or defroster older,. Other sites had similar R value requirements, so i guess we can try insulate! And 1 spider, press the recirc button let us explain… the air flow feels than... You notice cold air from the vents in the on position, it feels like fan! 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