Best AC Maintenance Tips for Summer Energy Savings
This summer is expected to be a hot one, and that means that plenty of homeowners are already sweating in anticipation of the high cost of cooling. The steady rise in energy costs means that the average US household is expected to pay a whopping $778 to keep cool this summer, a figure which can be even higher in homes with poor insulation and improperly maintained HVAC systems.
Many of the components in an HVAC system will wear out over time, which can lead to an accumulation of inefficiencies that can force the machinery to work harder and use more energy. This is why regular AC maintenance is one of the most important ways to keep your energy costs down when it’s hot outside. In the following blog post, we’ll discuss a few of the most important practical maintenance tips to help you save money on your energy bill this summer.
Change the Filters Regularly
Clear, unobstructed airflow is one of the most important features of an efficient HVAC system. Maintaining a clean air supply is equally essential to the health of a building’s inhabitants, as the presence of dust and other impurities can exacerbate asthma and other health conditions.
Keeping the indoor air clean can prove to be quite the challenge, however, as daily life inevitably produces a constant output of dust. It is composed of particles from skin, clothes, pet dander, mattresses, carpets, and outdoor air pollution, among other common sources, meaning its presence is an unpreventable fact of life.
For this reason, AC units are fitted with filters that can trap dust, dirt, pollen, and other impurities, an element that is critical to the health of the building’s inhabitants. Over time, however, these filters become soiled and ultimately blocked, making it difficult for cooled air to pass through them. When this happens, the AC unit’s energy efficiency is greatly reduced, as the system must work harder to move the same amount of air. When the air does make it through the clogged filter, it can pick up harmful pollutants and reintroduce them into the indoor environment.
To prevent this from occurring, check the filters in your air conditioning system regularly. They can be cleaned with a vacuum cleaner if they appear dirty. At least once a year, filters should be replaced entirely, which can be done as part of the routine AC maintenance performed by your HVAC professional.
Check the Refrigerant Levels
Your air conditioning system works in much the same way as your refrigerator. It is a closed system that depends on a chemical coolant to achieve the desired temperature. The coolants used are gases chosen for their low boiling points and heat transfer properties, including hydrofluorocarbons and natural chemicals such as ammonia.
When these gases are pressurized by the compressor in your air conditioning system, they return to liquid and become supercooled in the process. Thanks to the second law of thermodynamics, this causes them to absorb heat from the environment, effectively cooling the air that passes over the coils containing the refrigerant chemical. This cooled air can then be circulated throughout the home by a large blower motor.
As in a refrigerator or other cooling system, the efficacy and efficiency of the machinery depend greatly on maintaining the proper amounts of coolant chemicals at the correct pressure for maximum heat absorption. A properly maintained system can sustain these levels indefinitely, as the coolant in the machinery is not used up by the refrigeration process, nor does it lose its ability to absorb heat over time
However, physical damage and normal wear and tear can cause microscopic leaks to form in the coolant coils, eventually leading to a pressure drop. This greatly impacts the cooling power of the machinery, as the correct pressure cannot be maintained. If your energy consumption is unexpectedly high, or if your system doesn’t seem to be cooling properly, you can check coolant levels with a manifold gauge.
If you determine more coolant is required, however, you must contact an HVAC professional. Due to the potential environmental impacts of coolant chemicals, most jurisdictions require a licensed professional to add legally sanctioned refrigerant to an HVAC system.
Clean the Area Around the Air Conditioner
The importance of unobstructed airflow doesn’t end with the filtration systems inside the AC unit. It’s equally important to keep the area outside the system clean and clear, as any blockage can hamper the efficiency of the system and cause your energy bills to increase.
Think about it this way: After your HVAC system absorbs heat from inside your home, that heat has to go somewhere. Air conditioners are designed to vent it outside the building, which they do by pumping the coolant chemical into the exterior element and reducing the pressure. This causes the refrigerant to change back into a gas, and then the heat is released outdoors. This is an effective way to keep the indoor air cool. However, any blockage or obstruction near that outdoor unit will interfere with the release of heat, forcing the system to work harder.
Ensuring the efficient operation of your air conditioning unit requires paying proper attention to the outdoor unit and its surroundings. Maintain at least two or three feet of clearance at all times to allow heat energy to dissipate effectively. Trim any bushes or tree branches near the system and move any outdoor furniture or other obstructions.
Remove leaves or other debris that has accumulated in or around the system. Take care not to scratch or otherwise damage the machinery as you do so. You should also periodically clean the coils themselves, as the build-up of corrosion and dirt can hamper the effectiveness of the system. To avoid damaging your machinery, you should do this carefully using specialized coil cleaners, which dissolve dirt while remaining gentle on sensitive HVAC components.
Schedule a Professional Tune Up
Many of the tasks mentioned in this article, including cleaning soiled filters and refilling refrigerant coils, can be completed through regular AC maintenance by a licensed professional, such as the technicians at All Weather Heating & Cooling. Professional contractors will visit your home and inspect each element of your HVAC system. They will perform basic maintenance and make recommendations for more thorough repairs if necessary. These regular inspections can prevent catastrophic, costly HVAC emergencies while also reducing your overall energy costs.
Tune-ups should be performed at least once a year. Ensure the contractor you hire for the task is experienced and carries all the required licensing for your area. Ideally, the inspection should be performed before the hottest months, which is also the busiest time for HVAC professionals, so that you can enjoy uninterrupted, efficient performance from your AC unit. This way, you can relax in comfort all summer long.