Came home to a house at 108 degrees after a weekend visiting friends. We are Arizona’s most trusted HVAC pros and we’d be happy to help you repair any heat pump issues you’re facing. What you might have is heat strips in your AC unit rather than a heat pump and in that case you would get heat. It will also need to be replaced by a technician. Heat pump not heating Furnaces tend to put out about 130 to 140 degree air. Are you out of backup heat? After installing the Nest Thermostat, my system seems to be having trouble calling for Auxiliary Heat. To fix this, you’ll need to contact a technician and have them take a look at your system. Emergency Heat is typically triggered when it is 35°F and below outside. Get up-to-date current news, promotions and industry tips. The furnace has a difficult time generating heat if there isn’t enough airflow into the unit. The nest seems to blow warm air normally but once it switches to alternative heat source, then it starts blowing cold air. https://nest.com/support/article/How-does-Nest-manage-different-stages-of-heating-and-cooling. The air coming from your supply vent should be anywhere from 15-30 degrees hotter than the air near your return vent (depending on how cold it is outside). While that’s warm enough to raise the temperature of your home, it … May be something as simple as a switch or breaker is turned off. Alt heat means the heat pump is turned off and the other source (usually gas furnace) is asked to heat. One such issue is when the heat pump seems to be blowing out cold air even while in heating mode, which is likely to make them start fiddling with the thermostat in hopes of fixing the perceived problem. some systems have the wires 'crossed'. Ask our experts . It’s Defrosting. I am in GS, AL. Set the thermostat to cool mode, a few degrees below your room’s temperature, so the thermostat calls for cooling. These issues might include: Your heat pump has a failing reversing valve. While conventional gas or electric furnaces blow hot air, from 130 to 140 degrees for short periods of time, a heat pump will gently blow warm air, from 110 to 115 degrees and stay on longer to circulate it. Be sure the indoor vents aren’t blocked. Heat pumps work much more gradually, and maintain comfort by keeping a steady flow of warm air … Do you know what setting it is to change? Cookies help us deliver our Services. If so, your heat pump is likely in defrost mode and you don’t need to call a technician. Another setting on your thermostat is your FAN setting. If this is your issue, you’ll need to contact a professional to come to check out your heat pump. There are a few reasons your heat pump could be blowing cold air. If your compressor is dirty or clogged with debris, it's time to get it professionally cleaned. If your heat pump is blowing cold air, look outside and see if your outdoor unit is frozen or has frost on it. A furnace typically puts out air at around 130 degrees, whereas warm air from a heat pump is only a little over 90 degrees on a moderately cold day. New comments cannot be posted and votes cannot be cast. To determine if this is your issue, go outside and take a look at your outdoor unit (compressor). If it looks like the one pictured above, it’s time to enlist a professional to come and clean it. Did you find this article helpful? Save 10% when you book service online. Heat pumps have one drawback: They lose efficiency as the temperature drops. So if gas furnace it has failed. You might have a failed heat strip kit as heat strips are a common emergency heat source for heat pumps. 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. This setting should be set to AUTO, not ON. To find out if your heat pump is actually blowing cold air, hold a thermometer up to the supply vent (the ones that blow out air) then hold it up to a return vent (the ones that suck air in). This could make it feel like cool air … The nest seems to blow warm air normally but once it switches to alternative heat source, then it starts blowing cold air. Next, check your outdoor unit is not iced over (see Heat Pump Troubleshooting Problem #1). The reversing valve is the mechanical valve that switches your heat pump from cooling mode to heating mode. Plus, the colder it gets outside, the lower the temperature of the air a heat pump can produce. Literally a wire was in the wrong hole. However, your heat pump will struggle to absorb warmth from outside if the coils on the outdoor unit are dirty, clogged or blocked with debris (resulting in less heated air to your home). The reversing valve is a vital component in heat pump … … Think you may have an issue with your heat pump and want a skilled professional to take a look? Below freezing, your heat pump simply can’t draw enough heat from the cold air outside and will kick on its auxiliary heat mode to generate heat for your home. George Brazil Air Conditioning and Heating provides the Phoenix area with, body’s average temperature is around 98 degrees, Your heat pump is fine, you just think your heat pump is blowing “cold” air, Your heat pump is actually blowing cold air, in which case there is likely an issue with your system, Thermostat accidentally set to “cool” mode. When set to “ON” the fan will stay on even when your heat pump isn’t actually heating. If it’s dirty, change it! A pro will need to repair the leak as well as refill your refrigerant. The colder it gets outside, the less heat your heat pump can absorb from outside, and the lower the temperature your heat pump produces. While this may seem like an issue, your heat pump can usually heat your home just fine, but when it’s extremely cold out (below 30 degrees), it just takes your system a little longer to do so. Discussion on Google Nest products, including installation and configuration. The air coming from your supply vent should be anywhere from 15-30 degrees hotter than the air near your return vent (depending on how cold it is outside). That’s what we’re here for. This transfer of warm air to your outdoor unit helps to melt any ice on your outdoor unit. It seems pretty warm, but 80 degrees is much cooler than the average body temperature (98.6 degrees Fahrenheit) and could feel like cold air blowing into the home. Luckily, almost all of them are an easy fix for a certified heat pump repair team. So what’s defrost mode? Below, we’ll go into each of these possibilities in more detail, to give you a better idea of why your heat pump is blowing cold air. YOUR. I am troubleshooting a nest thermostat that is blowing cool/cold air when it's supposed to be heating. When set to on, your heat pump will blow air whether it’s heated air or not. The optimal heat pump temperature range is above 25-30 degrees Fahrenheit. Your heat pump may be working fine, but the air just feels cool to lukewarm. Once your outdoor unit has defrosted, your heat pump will return to transferring heat into your home rather than to your outdoor unit. If your thermostat looks like this, make sure you change it to HEAT. Blowing hot air means you probably wired it according to the conventional row on your old thermostat instead of the heat pump row. 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