We can help. Fortunately, this doesn’t need much to fix. Heat pump problems are often caused by thermostat malfunctions. A heat pump’s refrigerant is another crucial part of its system. The heat pump is already doing that. There are a number of malfunctions that can lead to a heat pump refusing to change to cooling mode, and one of the most common is a broken reversing valve. If it is, move on to step 3. If the unit seems to be fine, check if your outdoor unit has a reset button and press it. This article will discuss what to do if your heat pump is not cooling or does not provide enough cold air. The inverse happens if you want it to cool and you’re getting warm air. Check that the Room Thermostat is set to "Cool" not "Off" or "Heat". What are MERV and HEPA? This could be a connection failure, or the thermostat may be misreading the temperature. Heat pumps actually blow air that is warm but feels cold to us. I have responded to heat pump no heat or heat pump, not cooling calls, only to find the power was off inadvertently. The first thing to check when you face a heat pump not heating or a heat pump not cooling is to check the thermostat settings. The solution is simple: clear the area around your outdoor unit. The heat pump functions on the same principle as refrigerators and air conditioners: A liquid absorbs heat as it turns into a gas and releases heat as it returns to a liquid state. Thermostat problems: First check to see that your thermostat is set to cool. The condensation occurs from your unit dehumidifying your home. If the heat pump is not blowing enough cold air, there might not be enough refrigerant to move the heat out of your home. You can do the following for this situation: However, if none of these tips seem to be working, something else might need fixing. Is there air blowing out of the vent? You need to regularly check on the ducts to make sure the air is distributed efficiently. But when in doubt, don’t forget to contact your local HVAC service for proper maintenance. For the outdoor coils, clean them by gently hosing them down with water. These switches are typically not on heat pumps as a heat pump liking has a breaker next to the heat pump. The indoor coil in the air handler gets cold when the heat pump is in cool mode. Ideally, you should only check the valves if everything else is working fine. Check your insulation. Leaks or cracks in the ducts might keep the cold from efficiently cooling your home. When a heat pump thermostat is wired improperly, it fries electric components causing the heat pump not to run at all. The “HEAT” setting will cause your heat pump to operate in heating mode and blow warm air instead, but only if there is a call from the thermostat. Check power sources to ensure the heat pump is powered. Check out these tips on how to choose an air filter for your HVAC (i.e., furnace or heat pump), when, and why should you replace it. Bad reversing valve – If you have a heat pump not heating, but it works in cooling mode, you might have a bad reversing valve. A heat pump not only heats your home during the winter, it also cools it during the summer. Your room might not cool down even with a working heat pump due to insulation leaks. It may sound silly, but the first place to look when your heat pump isn’t cooling properly is your thermostat. This is another item you can add to your heat pump maintenance checklist. It does it automatically by reversing the refrigerant flow. If a Lennox heat pump is not working properly, reset the system before contacting technical support. A heat pump may also not be cooling because its indoor coil got iced. A heat pump may also not be cooling because its indoor coil got iced. Alternatively, it might be the case that your thermostat was wired incorrectly. Check these parts first once you’re sure that the thermostat and the electricity are alright. Heat pumps perform less efficiently from lack of airflow. It may sound silly, but the first place to look when your heat pump isn’t cooling properly is your thermostat. At this point, you need to replace your thermostat. Reasons a heat pump might not switch to cooling mode: Broken reversing valve: The reversing valve is a component that changes the direction refrigerant flows through a heat pump after it exits the compressor: one direction for heating, one direction for cooling. The information given below can be helpful for you then. You may also want to check your condenser and fins as well. If your heat pump worked fine when it was chilly but is failing you now that warmer days have arrived, check that the thermostat is turned to cooling and set on automatic. 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