The heat pump might be letting out a constant air flow, but it’s not as hot or as cold as it should be. Therefore, it’s not effectively delivering the desired temperature. First, look at your thermostat; is it set to the correct setting? If this should be the case with your system, then you might be facing a refrigerant leak, a broken compressor, a broken valve, or a problem with your thermostat.

These issues require you to call in a professional. Please don’t attempt to fix this on your own. Remember that tinkering with your heat pump should not be viewed as a home project. The mechanical parts inside are complicated and break very easily. Apart from that, the unit uses chemicals such as the refrigerant that can pose serious health risks.

If your heat pump is running and is blowing the proper air temperature, but your home overall fails to reach your desired comfort level you certainty have a problem. Your heat pump is not working efficiently. This could happen because your air ducts may have a build up of dirt, there is something blocking or preventing proper air flow, or you have a dirty filter. It is recommended by the manufacturer to change your air filters at least every three months. However, it is important to keep in mind that any dirty parts can lead to your heat pump working inefficiently. 

The AUX HEAT indicator means that the electric heaters are turned on. This is normal for a heating system when the temperature setting and the actual house temperature are different by two or more degrees, or during defrosting. But if you notice that this light comes on often, it's important to be checked out.

If you notice your heat pump is running but there is no air coming out the vents you most likely have an air flow problem. Check to see if there is anything blocking the vents and verify that your vents are fully opened. Make sure your air filters are not dirty or clogged because that can significantly effect the amount of air distributed throughout the building. Another culprit could be leaky ducts. If your vents have leaks, holes, gaps, or any other damage air will leak and lose air pressure. Unfortunately, you may not be able to fix your problem yourself. You can always ask an HVAC specialist to evaluate the root cause and provide recommendations for fixing your air flow. 

When your heat pump continuously turns on and off it is short cycling. Short cycling occurs when your heat pump is unable to maintain the set temperature so it is constantly restarting. You need to call for a repair as soon as you can because putting it off could result in your system fully breaking down. Short cycling could happen for various reasons such as a faulty thermostat, a refrigerant leak, a clogged filter or your heat pump could be improperly sized for your home or office. 

While seeing water leaking from your heat pump is a not uncommon, it may require an HVAC technician to assess and fix the problem. If the cooling coils inside the heat pump are lacking refrigerant, ice with form on the cooling coils and will melt when the heat pump is not on. This then seeps out of the heat pump forming a puddle. Another reason for the the leaking water is if your drain line is clogged. The drain line is for the condensation, but if it gets clogged with debris or algae the condensation will leak out. When your heat pump is leaking water, it is important to shut off the heating system completely and call an HVAC specialist.

Heat pumps will make noise. Typically can describe it as a humming sound. If you start hearing strange noises that you know your system shouldn’t be making or that weren’t there before, don’t ignore them! This is not a temporary situation because heat pumps don’t fix themselves! They can typically sound like rattling, flapping, groaning, screeching, or grinding which means one of the inside components is now broken. When you hear any of those noises it’s time to call your HVAC specialist!

Do you have dirty sock syndrome? Are you smelling something that is musty ? The smell of must could indicate that you have mold growing in your unit. This is not only bad for your health but for the future of your heat pump. 

If you smell something burning, the issue could be from dust on the electrical coil, closed vents, a clogged filter, or a more serious electrical problem. If you suspect it is an electrical burning smell turn off your heat pump immediately. If you smell burning while you are using the AC that is not common and could signify over heating. Turn off your heat pump right away and contact your HVAC expert. 

One of the main reasons why people install heat pumps to begin with is because they help families save a lot of money in terms of heating costs. In fact, studies show that a modern heating pump that is working in perfect condition can save you up to 50 percent on your heating and electricity bills.

Taking that into account, when you start noticing that your bills have suddenly spiked even though there doesn’t seem to be anything wrong with your heat pump, there is actually cause for concern. Things might seem fine on the surface but one of the components could be broken or struggling to work according to the manufacturer’s standards.