The Essential Guide to HVAC Systems: Everything You Need to Know About Keeping Your Home Comfortable


Introduction: What is an HVAC System, and How Does it Work?

Have you ever wondered how your home stays warm in the winter and cool in the summer? The answer lies in an HVAC system. HVAC stands for Heating, Ventilation, and Air Conditioning, and it is a system that regulates the temperature of your home. It works by combining heating and cooling systems to keep your home comfortable all year round. An air conditioning unit is responsible for cooling down the air while a furnace heats it up. The air is then circulated through ducts throughout your house so that every room can be kept at a comfortable temperature.


So next time you walk into a room and feel just the right amount of warmth or coolness, remember that it’s thanks to an HVAC system!


Types of HVAC Systems & Their Benefits

HVAC systems are essential for providing comfortable temperatures in homes and businesses; with so many different types of HVAC systems available, it can be hard to know which one is the best choice. Fortunately, understanding the different types of HVAC systems and their benefits can help you make an informed decision. From split system HVAC to heat pump systems, each type of system has its own advantages that you should consider before making a purchase.


Split systems are like the air conditioner superheroes of the installation world: they save you from the heat (or cold!) with their superpower! Typical air conditioners are paired with an evaporator coil and furnace indoors, but there are also split systems with a single indoor and outside unit, these are called heat pumps. Heat pumps do not use gas to warm your home, but instead use electricity to pump heat from the outside into the inside of your home. Once it's in, it can be used to warm your home or cool your home. When you install a heat pump, the outdoor unit pulls heat from the outside environment and then distributes it through your home on its own. The indoor unit's job is to distribute that hot air around, according to your heating needs. That way, both units share the load of keeping your home warm at night or cool during the day.


Split systems are available in different sizes for all kinds of climates and residences. So no matter what you have going on in your life and family needs, there's a size to fit it! Give us a call to see what type of system is right for you.


Maintenance Tips for Your HVAC System - How to Keep it Running Smoothly

Keeping your HVAC system running smoothly is essential for a comfortable home. But, with so many different components of the system, it can be hard to know where to start. Fortunately, there are some simple maintenance tips that you can follow to help keep your HVAC system in top shape. From cleaning the coils to creating an AC maintenance checklist, these tips will help you ensure that your HVAC system is running at its best!


1. Cleaning the coils

Regularly cleaning your coils prevents dust from building up and creates a healthy environment for your HVAC system. Many people start cleaning their coils the moment they purchase a new heating or cooling system to get it ready for use, but you can also schedule routine cleanings to ensure that your system is working at its best.


2. Changing the filter

When it comes to your HVAC system, changing the filter is one of the easiest ways to maintain a healthy home. Many people forget about changing their filters regularly, but this can cause any number of problems for your system, from poor air flow to dirty breathing. Before long, you will find yourself struggling with performance issues!


3. Making an AC maintenance checklist

Taking an inventory of what needs regular attention on your HVAC system will help you stay ahead of any problems or issues that may arise in the future. This includes checking up on things like filters and air flow, and keeping tabs on any damage that may have occurred.




Common Issues With HVAC Systems & How to Troubleshoot Them

It's no secret that HVAC systems can be a bit temperamental. With the cost of repairs and maintenance, it's important to know how to troubleshoot common issues with them before calling in a professional.


Check the breaker

The south is a hotbed for electricity surges, thanks to the thunderstorms, never-ending rain & pine trees galore. It's a wonder we even get power during the majority of our days! As a southern girl, I'm thrilled to keep you in the loop… CHECK YOUR BREAKER… especially if there was a storm recently. Your HVAC system has multiple breakers and disconnects to make sure you're safe, but they are not always as powerful as you may think. If your HVAC system is running during an electrical surge and the electricity overloads your breaker, it will shut off the power to the unit to protect it!


Change the filter

A neglected filter can cause tons of issues in your humble abode; don't let that happen to you! A dirty air filter can cause your air to smell bad, your HVAC system to work harder to keep you comfortable, and in some circumstances your HVAC system can overheat and stop working all together.


Check your thermostat

Before you shiver your way through the winter, or break a sweat this summer, make sure you check your thermostat. It's important to keep track of its power source and if the batteries need to be changed. You'll also want to be sure it's set correctly for heating or cooling, so you don't end up with an uncomfortable temperature in your home!


We are here to help

H&H Mechanical is always here to help. If you have questions about how your system operates or are looking to replace your dinosaur in the attic, give us a call or send us a message, and we will gladly answer any questions you have.

You might also like

What Does Pollen Do to Your HVAC?

By Loren Crabtree • April 22, 2025
What Does Pollen Do to Your HVAC?: Understanding the Impact and Solutions Pollen's not just a concern for your allergies; it also poses a notable threat to the efficiency and longevity of your HVAC system. When trees, grasses, and flowers bloom, they release these tiny, powdery grains into the air, and inevitably, some of it finds its way into our homes and HVAC systems. But what does pollen actually do to your HVAC? Let's explore the impact and solutions. 1. Clogged Air Filters Air filters are the first line of defense in your HVAC system, trapping pollutants, dust, and yes — pollen. During high pollen seasons, filters can become clogged faster than usual, which impedes airflow. Solution: Check and replace your HVAC filters more frequently during peak pollen times. Consider investing in filters with a higher MERV rating that can capture smaller particles, including pollen, without restricting airflow. 2. Reduced Efficiency When pollen clogs the filter, your HVAC system has to work harder to pull air through it. This strain not only reduces efficiency but can also lead to an increase in your energy bills as the system consumes more power to maintain your desired indoor temperature. Solution: Regular maintenance, including professional inspections and cleanings, can help ensure that your system is running as efficiently as possible. 3. Increased Allergens Indoors If pollen makes its way past a dirty or inefficient filter, it can circulate through your indoor air, posing a risk to allergy sufferers. This defeats the purpose of having an HVAC system that's supposed to provide a clean, comfortable indoor environment. Solution: Consider adding air purifiers with HEPA filters to your home, especially in bedrooms, to further reduce allergen exposure inside. Also, ensure that your home is well-sealed to minimize the infiltration of outdoor air that could bring in additional pollen. 4. Strain on the Entire System An HVAC system struggling with a dirty filter and reduced airflow may experience strain on its components. The blower fan can wear out faster, and the evaporator coils can freeze, leading to potential system breakdowns and expensive repairs. Solution: Schedule preventative maintenance to ensure that all components of the HVAC system are functioning correctly. The technician can identify and address potential issues before they escalate into more significant problems. 5. Decreased Indoor Air Quality Not only can excess pollen in your system exacerbate allergies, but it can also affect people with no known allergies. Poor air quality can lead to a general discomfort, with symptoms like sneezing, coughing, and headaches being common. Solution: In addition to regular HVAC maintenance and filtration, you might also want to invest in a whole-house dehumidifier to maintain optimal humidity levels, which can help prevent the proliferation of mold and other allergens. Pollen can wreak havoc on your HVAC system if not properly managed. However, with proactive care and the right equipment, you can minimize its effects. Regularly clean and replace air filters, seal leaks in your home, and consider investing in supplemental air purification tools. By taking these steps, you can safeguard your HVAC system, maintain good indoor air quality, and ensure a pleasant and allergen-reduced environment at home.

Top 5 Energy-Zapping Habits in the Summer

By Loren Crabtree • April 8, 2025
Top 5 Energy-Zapping Habits in the Summer The shift to warmer weather can come with a noticeable increase in our energy bills. As temperatures rise, so does the tendency to engage in habits that, while providing short-term relief, significantly contribute to energy wastage. Identifying and adjusting these energy-zapping habits can lead to not only a more environmentally friendly lifestyle but also substantial savings. Here are the top five habits to be aware of and adjust this summer. 1. Overusing Air Conditioning While air conditioning is a modern luxury that can make the hot summer months bearable, excessive use is among the top energy-zapping habits. Setting the thermostat too low or leaving the AC on when no one is home contributes to unnecessary energy consumption. Tip: Consider installing a programmable thermostat or a smart home system that allows you to schedule cooling times and adjust settings remotely. Setting your thermostat to a higher temperature when you’re not home can lead to significant savings. 2. Ignoring HVAC Maintenance A well-maintained HVAC system operates more efficiently and uses less energy. Neglecting routine maintenance such as replacing filters or ignoring signs that the system may not be working efficiently can lead to higher energy consumption. Tip: Schedule regular maintenance checks and clean or replace the air filter every 90 days or as recommended by the manufacturer to keep your system running smoothly. 3. Frequent Opening of Refrigerator Doors It might seem trivial, but the habit of opening the refrigerator frequently can cause a significant increase in energy usage. Each opening allows cool air to escape, forcing the fridge to work harder to maintain its internal temperature. Tip: Try to limit the number of times you open the fridge door by planning what you need ahead. Keeping the fridge and freezer well-organized can also help minimize the time the door stays open. 4. Overdoing the Use of Heat-Producing Appliances Summer is not the best time to frequently use ovens, stovetops, or other appliances that produce a lot of heat. These not only contribute to the ambient temperature of your home (making your AC work harder) but also use a lot of energy. Tip: Opt for meals that require minimal cooking, use a microwave or slow cooker, or consider grilling outdoors. 5. Poor Insulation and Air Leaks Poor insulation and air leaks around doors and windows allow cool air to escape, which can significantly increase the workload on your air conditioning unit. This, in turn, increases energy consumption.  Tip: Invest in quality insulation, and use weather-stripping around doors and windows to seal leaks. These improvements can provide long-term savings and a more comfortable living environment. Summertime should be a season of enjoyment, not high energy bills. By being mindful of these top energy-zapping habits and making a few adjustments, you can enjoy a cool, comfortable home without breaking the bank. Start implementing these tips today for a more energy-efficient summer.

Is Ductwork Included?

By Loren Crabtree • March 25, 2025
Why You Might Not Change the Ductwork When Replacing Your HVAC System When it comes time to replace your HVAC system, a question that frequently arises is whether the existing ductwork also needs to be replaced. Surprisingly, the answer isn't always a resounding yes. While it might seem logical to overhaul everything at once for efficiency's sake, several compelling reasons might sway your decision to retain the existing ductwork. Here's why: 1. Condition of Existing Ductwork The primary consideration is the condition of your current ductwork. If it's in good shape, free from leaks, and not showing signs of significant wear like corrosion or damage, it can often remain in place. Quality ductwork can last decades if properly installed and maintained, meaning it might outlast an HVAC unit itself. 2. Cost Efficiency Replacing ductwork is an extensive and sometimes invasive process that can significantly add to the overall cost of HVAC system replacement. If the current ductwork is still functional and efficient, keeping it can save you a substantial amount of money and time. It's all about balancing the cost versus benefits, and if the ductwork isn't contributing to energy loss or performance issues, the expenditure might not be justified. 3. Compatibility and Sizing In many cases, the existing ductwork is perfectly compatible with the new HVAC unit. Proper sizing is critical for the efficiency of the HVAC system — if the ducts were correctly sized for the old unit, and the new unit is of a similar size and capacity, there's often no need for adjustment. However, significant changes in the size or type of HVAC system could warrant a reassessment and potential replacement of the ductwork. 4. Minimal Performance Gains The performance boost from replacing ductwork might not be as significant as expected, particularly if your existing ducts are in good condition. The efficiency and functionality of your HVAC system depend largely on the unit itself, proper installation, and regular maintenance. While new ductwork can offer improvements, especially if the old system had issues, the marginal gains might not always justify the cost for systems already operating efficiently. 5. Environmental Considerations Retaining existing ductwork can also be a more environmentally friendly option. By not replacing the ducts, you're reducing waste and the demand for new materials. This approach aligns with the principles of reducing, reusing, and recycling, contributing to a lower environmental impact. Final Thoughts Deciding not to replace the ductwork during an HVAC system upgrade isn't about cutting corners; it's about making an informed choice based on the condition, compatibility, and the potential cost and environmental impact. However, it's crucial to have your current system evaluated by a professional to ensure that keeping the existing ductwork is the best decision for your home's comfort and efficiency. Regular inspections and maintenance will keep your HVAC system, and its ductwork running smoothly for years to come, ensuring that when the time for replacement comes, you'll be ready to make the best choice for your home.
More Posts

Book a Service Today