HVAC FAQ

Air conditioners are actually designed with two separate units–an indoor unit and an outdoor unit–which work together to provide you with optimal comfort. The unit on the outside of your home is called the condenser and contains a liquid refrigerant that is distributed over the evaporator coil located in your indoor unit, also called the air handler. Through this process, heat and humidity are removed from the air and your comfort is maintained by cooling the house.

The average lifespan of heating and cooling systems, heat pumps, AC units, and furnaces, typically ranges from 15 to 20 years, give or take. To ensure your system reaches its maximum life, it’s crucial to have regular maintenance performed. Routine service for heaters and air conditioners helps to maintain efficiency, address minor issues before they become major problems, and extend the life of your system. If your system is approaching this age range, it might be time to consider replacing it to avoid unexpected breakdowns and ensure continued comfort and increased energy efficiency.

There are a few key signs that it’s time to replace your HVAC system. For instance, if your current system is over 15 years old, frequently breaks down, or your energy bills are rising despite regular maintenance, it might be time for an AC replacement. Newer HVAC systems are significantly more energy efficient, which can save you money in the long run. 

However, if your system is relatively new and the repair costs are manageable, it may be more cost-effective to repair it. Consulting with a Dallas HVAC replacement contractor can help you determine the best course of action to ensure you don’t replace your unit prematurely or continue paying for repairs that won’t last.

A mini split, also known as a ductless heat pump or ductless mini split system, is a type of HVAC system that provides both heating and cooling without the need for ductwork. It consists of an indoor unit that is mounted on a wall and an outdoor unit that is connected by refrigerant lines. 

This setup allows for flexible installation and efficient temperature control in individual rooms or zones. Ductless mini splits in Dallas are a convenient and energy-efficient solution for homes without existing ductwork or for adding climate control to specific areas.

A heat pump transfers heat from the outside air (air-source heat pump) or ground (ground-source or geothermal heat pump) into your home and is a versatile option for both heating and cooling. A furnace, on the other hand, only generates heat. Furnaces can be fueled by gas, oil, or electricity, distributing heated air through a network of ducts and vents.

While heat pumps are typically more energy-efficient, especially in moderate climates like Texas, furnaces are often more effective in extremely cold conditions. If you are interested in installing a furnace or heat pump in Dallas, TX or the nearby areas, or if you simply want to learn more about these two options, call Sherrell Air today.

Though not as common as heat pumps and furnaces in Texas, boilers are another type of heating option for homeowners. There are many types of boiler systems available, including electric boilers, steam boilers, hot water boilers, condensing boilers, gas boilers, and oil boilers. The most common of these tend to be oil and gas. A gas boiler burns natural gas to create heat, which is then circulated through radiators or underfloor heating systems to provide warmth. An oil boiler uses heating oil to accomplish the same task.

Boilers offer a number of benefits, including:

• Energy efficiency
• Quiet operation
• Better indoor air quality
• Zoning capabilities
• Durability and long lifespan
• Less maintenance

There could be several reasons your AC is not turning on. First, check if the thermostat is set correctly and has functioning batteries. A tripped circuit breaker or a blown fuse in your HVAC system can also prevent it from powering on. Issues with the internal components or wiring could also be to blame. 

Sometimes, a simple fix such as resetting the system or ensuring all equipment is properly connected can resolve the problem. If none of these steps resolve the issue, it’s best to contact a Dallas AC repair professional at Sherrell Air to diagnose and fix the issue so we can get your HVAC system running smoothly again.

If your HVAC unit is making noises, it could indicate various issues that need immediate attention. For example, sounds like banging, clanking, or rattling may suggest loose or broken components within the system. A squealing noise might point to a problem with the belt or motor, while a hissing sound could indicate a refrigerant leak.

Addressing these noises promptly by consulting a professional can prevent further damage and ensure your heater or air conditioner continues to operate efficiently throughout the remainder of its functional life.

There are a number of contributing factors that play a vital role in managing and maintaining comfort levels in your North Texas home. The most common of these include:

• Temperature: To the average consumer, indoor temperatures are typically the beginning and the end of the discussion when the topic of home comfort arises. In reality, temperature is only one of the main players in creating a comfortable home environment. At Sherrell Air, we will recommend a heating and cooling system customized to your unique temperature needs.
• Clean and Fresh Air: Poor air quality can have disastrous effects on both the efficiency of your heating and cooling system and your health. Our Dallas indoor air quality specialists will be happy to suggest an air purifier or air scrubber that will assist in removing dust and other allergens within your home so that not only will you and your family breathe easier, but your system will also have the opportunity to run more effectively.
• Humidity: During the winter months, the air is typically very dry, which causes static electricity and itchy skin. If humidity is added, the uncomfortable feeling of dry skin is relieved. In the humid summer months, removing the humidity means the air becomes less sticky and the summer becomes more enjoyable. To learn more about the benefits of whole-home humidifiers and dehumidifiers, give us a call today.
• System Control: Are the temperatures in your home inconsistent from room to room? Is the front of the house warmer or cooler than the back, or vice versa? In many cases, the solution to these problems is a self-adjusting, programmable thermostat that can balance the air throughout your home and provide an even distribution of air. Our Dallas thermostat specialists at Sherrell Air will be happy to suggest a thermostat designed for your needs.

If your home feels excessively humid, there are a few things you might want to investigate. For one, an oversized or inefficient air conditioning system may not run long enough to remove moisture from the air, leaving your home feeling damp rather than cool. Poor ventilation and leaks in your home’s structure can also contribute to increased humidity levels. It’s also pretty common for Texas summers to bring a wave of humidity that could impact your indoor air quality. 

A professional HVAC technician can investigate the quality of your home’s air, identify the source of the humidity, and recommend the best solutions, whether that’s a properly sized air conditioner, improving ventilation or air leak sealing, or installing a whole-home dehumidifier.

The evaporator coil (or cooling coil) is located in your indoor unit. As it creates condensation by removing moisture from the air, a drain pan will normally collect the water. However, if the drain line becomes clogged, a leak may occur from the overflow. Factors that lead to a clog in a drain line include algae build-up, crimped lines, settled wood platforms, snakes or other animals, or just poor system maintenance. To learn how to clean your indoor AC coils, click the link to check out our step-by-step guide.

There are two main reasons why ice would be found on coils, pipes, or compressors. The first is that your system has a low level of refrigerant, and the other being a clogged air filter. If this problem is not corrected as soon as possible, it could have disastrous effects on the compressor of the system.

Should you notice a frozen AC, you should first turn the system off before checking and changing the air filter. If the air filter does not appear to be clogged, then immediately consult our professionals at Sherrell Air. We will promptly be at your service to resolve your freezing problem.

A common problem among homeowners in the DFW area is poor indoor air quality. Luckily, there are some great solutions out there to help improve the indoor air quality in your Dallas home. For example:

• Ensuring your home has the proper ventilation can help reduce moisture levels. 
• Salt lamps, activated charcoal, and houseplants have been found to naturally purify indoor air. 
• Your carpets are a toxic sponge, and should be cleaned regularly. 
• Avoid smoking and using chemicals in the air. 
• Invest in air duct cleaning services (typically every 3-4 years).
• Conduct regular HVAC maintenance for your heating and cooling systems. 
• Replace HVAC air filters regularly. 
• Install a whole house air filtration system. Our system can remove up to 99.98% of airborne allergens from your air.

You should inspect your filters at least once each month. Cleaning and replacement should be done on an as-needed basis, though it’s often recommended to change them every 3 months or so. As with the rest of your heating and cooling system, cleaner is always better.

High-efficiency air filters remove more of the smaller particles from the air, which can help you breathe better and reduce sinus problems, allergies, headaches, and colds. As a result, many people miss fewer days from school and work and use less allergy medication. These filters can also help enhance the performance and longevity of your HVAC system, as they prevent dust and other debris from accumulating on internal components. This leads to improved energy efficiency and a lower energy bill.

Just like you take your car to the shop for oil changes and tune-ups, your air conditioning and heating system should receive the same kind of attention. Scheduled maintenance by a trained technician provides a variety of benefits to your HVAC equipment, which can help your systems perform efficiently, save money on your electric bill, and prevent costly breakdowns. Regular maintenance also helps keep your warranty valid. 

To ensure your system operates at its maximum efficiency, our experts at Sherrell Air Conditioning & Heating recommend a thorough heating tune-up just before the cooler months arrive and a comprehensive AC tune-up before the warmer months hit. Ask us about our preventative maintenance agreement–The Cool Club–which will provide two scheduled visits per year plus a number of cost saving perks!

While it might be tempting to install a new air conditioning or heating system yourself to save money, it’s generally not advisable. HVAC equipment is complex and requires specialized knowledge to ensure it operates efficiently and safely. Incorrectly installing or replacing a unit can lead to equipment malfunctions, reduced efficiency, and potentially costly repairs.

Professional installation ensures that your air conditioner and/or heater are set up correctly, avoiding common pitfalls and ensuring your systems operate at their best, ultimately saving you money in the long run.

Unfortunately, for any system that is in excess of 10 years old, it is likely you are paying an average of 30% more on your overall utility bills due to a lack in efficiency standards. For example, by upgrading a unit with a 10 SEER rating to a new updated system with a minimum of 13 SEER, you will see a savings of at least 30%.

An important point to remember is that when you upgrade to a 13 SEER or higher, you must install an ARI-matched system.

To save on energy bills, start by enhancing the energy efficiency of your home. Installing a programmable thermostat allows you to set precise temperature schedules, reducing unnecessary heating and cooling when you’re not home. This simple change can significantly lower your energy bill.

Additionally, following top energy-saving tips such as sealing drafts, improving insulation, receiving regular HVAC maintenance, and using energy-efficient appliances can contribute to a significantly lower electric bills. By implementing these strategies, you can decrease your energy bill, put more money in your pocket, reduce your carbon footprint, and maintain a comfortable home environment.

Some of the many benefits of smart thermostats include:

• Convenient Temperature Control: Smart thermostats allow precise temperature control, as you can easily adjust settings remotely using your smartphone or other devices.
• Energy Efficiency: These devices optimize your HVAC system’s performance by learning your schedule and adjusting temperatures accordingly, reducing energy waste and lowering your carbon footprint.
• Save Money: By automatically adjusting the temperature when you’re away or asleep, you can experience significant savings on your electric bill.
• Integration with Smart Home Systems: Many smart thermostats work with other smart home devices, helping manage your home’s climate, lighting, security, and other functions.
• Automated Maintenance Reminders: A smart thermostat can alert you when it’s time to replace filters or schedule maintenance.
• Data and Insights: These devices provide detailed reports on your energy usage, helping you identify patterns and opportunities to further improve energy efficiency and save money.

When choosing the right HVAC company in Dallas, you’ll want to look for a company with a strong reputation for reliable service and positive customer reviews. Ensure they offer comprehensive HVAC services, including installation, maintenance, and repair. It’s also important to verify that the company is licensed and insured, providing peace of mind for any work performed.