HVAC has become the source of human comfort and now almost everyone is interested to get their hands on the latest model. It is a state of the art appliance that is useful both in summer and in winters. It is built to enhance the comfort level, but you need to hire a reliable service provider to keep your unit in the best shape all the time. That’s right, like any other appliance it needs care too, and the more you care for it, the better it will perform. If you want your appliance to have a longer and healthier lifespan, then skilled residential HVAC services must be hired. The following things must be a part of the reliable company’s package.  
Indoor unit inspection
Maintenance of an HVAC unit is mandatory if you want to enjoy fresh and healthy air for a long time. Whenever you select a company, you must see whether the hired company inspects the indoor unit or not. Because the service is about the whole unit, therefore the indoor unit can’t be left outside. The inspection team would inspect the performance of the various part including thermostat settings. Because a drop in efficiency is expected if the optimal settings are not chosen. So, make sure your indoor unit is inspected in detail.
Lubrication and condensate drain examination
Whoever comes to take a look at your HVAC system must have a checklist. You’d find lubrication and condensate drain examination listed at top of this list. Since your system absorbs excess humidity from the air intake, various parts can start making noises because of rusting. If the front grill makes the noise, then it would be quite irritating. So, lubrication is the quickest remedy to get rid of it, if you can learn to do it yourself, then you can do it easily as soon you hear some noise. Similarly, the examination of the drainpipe is important as well, because a leak in it causes issues. 
Outdoor unit inspection
The inspection of the outdoor unit is equally important because the air is taken in with the help of the indoor unit but the outdoor unit process it and converts it into fresh air. That’s why a good HVAC service package should be considered incomplete without checking the outdoor unit. The basic care of the outdoor unit involves position inspection, removal of debris, etc. Make sure that you install your unit in a place that is easily accessible because it improves ventilation and makes it easier to carry out the examination.
Filter replacement 
The filter is just like a lifeline of any HVAC unit, its job is to filter our dust and materials from the air when it’s taken inside. Once the air is filtered properly only then, it efficiently converts it into a fresh supply of air. If your filter is choked or you didn’t replace it for some reason, then your unit will not be able to breathe. It would consequently drop the efficiency of the unit considerably. A general service must include the filter inspection and replacement in time. In fact, the first thing the maintenance services do is to check the filter because according to the SOP’s it has to be replaced frequently.
Updating service plan various
The HVAC maintenance services based companies usually offer the service plans to the clients. That plan usually includes everything except extraordinary maintenance. So, even if there’s a problem it can be found out easily in time if you have a service plan. If you don’t, then before your system shows some anomaly get one. 
Hiring an HVAC service for residential or commercial units is extremely important if you want to protect your investment. The professional services help to keep your unit in line and perform well. Because no matter what type of issue you are having, when it’s inspected in time the fixes can be applied in time. If you don’t have any such service, then you might experience issues in the long run.

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