J & W Heating and Air Blog

When Ductless Is a Good Choice for Air Conditioning Installation

September 10th, 2014

If you don’t have any ductwork in your home or new room addition, you may be curious about your options for air conditioning installation. More and more homeowners are choosing to ditch their small room or window air conditioners and forgo ductwork installation for a new ductless system that can cool an entire home. But what’s wrong with window air conditioners? Is ductless air conditioning installation the right choice for your home? To answer these questions, we made a list of some of the major reasons you may decide to go ductless.

You Don’t Have Any Ductwork in Your Home

For many homes without any ductwork, ductless air conditioning installation is simply the most logical option. Window air conditioners are generally inefficient. While the U.S. government requires most AC units to have a SEER (Seasonal Energy Efficiency Ratio) of 13 or higher, window units are exempt from this rule and are much less efficient at an average SEER of about 10. And installing ductwork may be a major disruption to your home, while installing a ductless AC means a technician only has to drill one small hole in the wall to connect the indoor units to the outdoor unit via a refrigerant line.

You Want to Be More Comfortable

Window air conditioners are sometimes ineffective at cooling large spaces, but with ductless air conditioning installation, a technician sizes your unit and strategically installs the indoor air handlers to ensure total comfort throughout the home. In fact, ductless AC keeps you even more comfortable with built-in zone control. You may need multiple indoor air handlers to cool an entire home, but each unit is connected to its own thermostat, so you can choose to vary the temperature in the house depending on your needs.

You Want to Reduce Energy Consumption

Ductless air conditioners are not only more efficient than window units; they often have a higher SEER than many central air conditioners as well. And they allow you to choose whether you want to save money by only cooling (or even heating) some parts of the home. If some rooms in your large home are unused throughout the day, you may decide to increase the temperature so that you are not cooling an unoccupied space.

For ductless air conditioning installation in St. Augustine, call J & W Heating and Air today!

The Fashion of Wearing White and Labor Day

September 1st, 2014

You may have heard about the fashion faux pas of wearing white after Labor Day. In the present, this tradition is usually treated as old fashioned and a joke. Few people will criticize you for wearing white articles of clothing after the first Monday in September, or even take notice of it except to wonder why it was ever a major concern at all.

Where did this tradition of white clothing going out of fashion after Labor Day come from, and why did it fade away like colorful fabric washed in a hot load in the washing machine?

In general, white makes sense for the heat of summer. Light-colored clothing reflects away the radiant heat of the sun, instead of absorbing it the way dark colors do, so for thousands of years of human history people have preferred to wear white clothing during the hotter months.

However, the idea of white as strictly fashionable during the summer season only emerged in the nineteenth and early twentieth centuries—the time when the very concept of “fashion” began to spread across the Western Hemisphere.

It was only the highest level of post-Civil War society in the U.S. that strict and often bizarre rules for fashion controlled whether someone was in with the “in” crowd. Compared to our ideas of what’s fashionable today, the Czars of Style in the 1880s were true despots. Things as trivial as sleeve length could determine whether a woman in high society—no matter her level of wealth—was fashionable or a pariah.

Wearing white during the only summer, when it was common for weddings and outdoor parties, was only of these restrictive society rules. When the U.S. government made Labor Day a federal holiday in 1894, the Fashion Czars gained a definite cut-off point for when wearing white was no longer “acceptable” in the upper echelons of wealthy society.

For many decades, this rule only applied to a small number of millionaire socialites in a few big cities, but in the 1950s it reached general fashion magazines that were read around the country and started to affect more people.

But time eventually broke apart this odd rule, and during the 1970s fashion became more individual. Some fashion legends, like Coco Chanel, also purposely rejected the restriction and wore white throughout the year. Today, the “no white after Labor Day rule” is little more than an amusing gag to tease friends, and almost nobody takes it seriously.

Whatever you choose to wear after Labor Day (and if it’s white, we won’t tease!), everyone here at J & W Heating and Air hopes you have a happy end of the summer and great plans for the fall!

What Is an Energy Recovery Ventilator?

August 27th, 2014

Air-tight properties can be great for energy efficiency, but not so great for good ventilation. However, there is a whole-home device that can be added to your existing HVAC system that helps with both energy efficiency and ventilation: an energy recovery ventilator, also known as an ERV. Your indoor air quality in Jacksonville is important for both comfort and health, and with an ERV, you can accomplish both healthy air and energy efficiency. J&W Heating and Air has been serving customers in the Jacksonville area since 1966, and we can help you with all of your indoor air quality needs.

How Does an ERV Work?

An ERV capitalizes on the second law of thermodynamics, which states that energy will spontaneously move from areas of high energy to areas of lower energy. The core of the ERV, known as the heat exchanger, transfers heat and moisture between incoming and outgoing streams. During winter, your warm, used indoor air is expelled. As it exits, it pre-heats the incoming cold air and also adds moisture to it. During the summer, your used conditioned air is expelled, and it pre-cools and dehumidifies the incoming warm air.

What Are the Benefits of an ERV?

There are several key benefits to installing an ERV:

  • Continuous clean, fresh air – an ERV brings in a constant, steady stream of air from the outside, which improves your ventilation and indoor air quality.
  • Better energy efficiency – pre-treating the air, whether during summer or winter, helps reduce the amount of work your HVAC system has to do. This can reduce the amount of energy it uses to operate.
  • Balanced humidity levels – an ERV manages moisture by either adding it or dehumidifying it according to the season, which helps maintain very balanced humidity levels in your home.
  • Less wear and tear on your system – an ERV reduces how much your AC has to work, which can reduce the rate of wear and tear.

An ERV can help your HVAC system be more efficient while also helping with indoor comfort and air quality. If you are interested in seeing what an ERV can do for your AC and indoor air quality in Jacksonville, call J&W Heating and Air today and schedule an appointment with one of our experts.

High Energy Bills: Should I Call for Air Conditioning Service?

August 20th, 2014

Are you seeing your energy bills rise but haven’t changed how you operate your air conditioner? It may be time to call for an Orange Park air conditioning service. Any time an air conditioner is strained, it uses more power to achieve the cooling performance you want. Many things can account for the strain, which is why it’s important to hire professionally-trained specialists, like the ones at J & W Heating and Air, for your repair needs.

What Can Cause Higher Energy Bills?

A lot of different problems can cause your air conditioner to use more energy. Here are a few examples:

  • Refrigerant leaks – leaks in refrigerant imbalance the refrigeration cycle in your air conditioning system. This imbalance can make components like the compressor work harder, which can increase energy usage.
  • Fan issues – there are two fans in your air conditioner: one in the condenser unit and a second in the evaporator unit (also known as the blower). Both fans play a large role in the air flow of your system. When a fan malfunctions, such as slowing down due to a worn fan belt, the air flow also decreases. This forces your system to work harder.
  • Dirty air filter – your air filter should be changed approximately every 3 months. The job of your air filter is to capture as many large particles of dust and dirt as it can, as well as to block pieces of debris from entering your air conditioning system. As such, the air filters can become very dirty and clogged, and this can restrict the air flow in your system.
  • Faulty ductwork – faulty ductwork can account for up to 30% of the total air loss in your air conditioning system. Holes, cracks, broken seals and disconnections can siphon your cool air away from the duct, reducing the amount of air being delivered. Your AC has to accommodate for this loss, and does so by working harder.

Energy inefficiency can wreak havoc on your air conditioning system and your wallet. By scheduling air conditioning services in Orange Park now, you can reduce your loss of energy and get your system back on track. Call Comfort Central, Inc., today and schedule an appointment with one of our experts.

The Benefits of Adding and Replacing Insulation

August 14th, 2014

Insulation is often associated with winter, and for good reason: it helps keep you warm. But insulation isn’t just good for keeping your heat in; it is also important for keeping heat out during the summer. If you have poor insulation, you could be spending a lot of extra money cooling your home that could be recouped by adding to or replacing your current insulation in St. Augustine. Insulation is your first line of defense against cool air loss, so if you suspect your home may not be properly insulated, call J&W Heating and Air for an appointment.

How Does Insulation Help Keep You Cool?

The main job of insulation is to stop heat transfer. One of the basic laws of thermodynamics is that warm air will always travel to cool air. So, if you are cooling your home, one of the challenges you have is keeping the warm outdoor air from infiltrating your cool indoor air. Insulation helps by blocking the outdoor heat from coming into your home through the walls, ceilings and roof.

Different Kinds of Heat

There are 3 different kinds of heat transfer that insulation blocks: conduction, which is heat that moves through solids or liquids; convection, which moves through gases; and radiation, which is thermal heat. The way insulation works in the summer is not by keeping the cool air in, but by keeping the 3 kinds of heat out. In winter, insulation works to keep the heat in. This is why it’s important to have good insulation in your home.

Benefits of Insulation

  • Slows the transfer of heat
  • Prevents moisture exchange
  • Increases energy efficiency
  • Increases comfort levels

Recommended Thickness

Florida insulation recommendations are between R30 to R60 when there is no insulation, and R25 to R38 if you are adding insulation.

Be Cooler and More Efficient With Insulation

When your home is poorly insulated, your comfort and energy efficiency may be suffering. If your insulation in St. Augustine, FL is inadequate, call the professionals who can help: J&W Heating and Air.

Why Call a Specialist for Commercial Air Conditioning Services in Jacksonville

August 7th, 2014

The summer season in Florida lasts long past what most of the rest of the nation considers “summer.” And that means you need to have the air conditioning system for your business capable of working additional months keep your work place cooled down for the comfort of employees, customers, and/or clients. Your company can’t afford to lose the circulation of cool air through the building when the temperatures outside are still hovering around the 90s.

When you require service for commercial air conditioning in Jacksonville, FL, whether it’s installation, repairs, or maintenance, you cannot turn to just any HVAC company. These jobs require commercial specialists, like the team at J & W Heating and Air. We can handle your light commercial (under 25 tons) air conditioning needs to keep your company cooled down through any late season heat wave.

Why Commercial Specialists Are Necessary

Commercial air conditioning is dissimilar to residential air conditioning, even though the basics of how the systems work are the same (electrical power used to circulate refrigerant that moves heat from the inside of a building to the outside). Commercial ACs are larger and more complex systems, and have a number of major design differences.

The most common type of commercial AC is a rooftop package unit, and this is a kind of air conditioning rarely seen for a home. A package unit combines all the important components of an AC into one cabinet, instead of splitting it across and indoor and outdoor cabinet, and they require specialized training to service them and install them.

Commercial ACs are designed as modular systems: you can increase the cooling load by adding more units, something not possible with residential cooling systems. This adds complications to installing systems, and makes repairs much more intricate.

Another important consideration for commercial air conditioning is keeping your building up to code. Commercial service technicians are familiar with the local electrical code, and when they service your AC they will make certain that it remains within code and doesn’t threaten your company with a temporary shutdown.

Contact Commercial Experts Today

For all your needs for light commercial air conditioning in Jacksonville, FL, you can rely on the talented staff at J & W Heating and Air. No matter if it’s new installation or a routine maintenance check, we will make sure that your business’ AC works effectively and efficiently for you. You can reach us 24 hours a day for emergency service. Contact us today to set up your next appointment for commercial AC installation.

What R-value Means for Insulation and Why It’s Important

July 29th, 2014

Quality insulation is crucial for a comfortable and energy-efficient home. Insulation serves as a thermal barrier that slows down the movement of heat through convection and conduction and sometimes radiation. During hot weather, the layers of insulation in the walls and the attic prevent excess heat from seeping inside, making it easier to cool your house and lessen the burden on your AC. During cold weather, insulation keeps heat trapped inside, and your heating system won’t have to strain continually to replace the warmth escaping to the outdoors.

But simply having insulation in your home isn’t enough: it must be properly installed, and it must be the right type. One important piece of information to have about insulation is its “R-value,” which plays a huge role in whether the insulation is right for the job or not.

Trust professionals like those at J & W Heating and Air for your insulation in Orange Park, FL and you will always receive the correct R-value insulation, installed correctly.

So just what is R-value?

R-value is a measure of how much resistance a piece of insulation creates against the movement of heat through conduction: in rough terms, R-value is how “good” insulation is at creating a heat barrier.

The R-value of insulation is determined through laboratory tests, and run through the following formula: temperature difference x area x length of exposure divided by heat loss. The resulting integer is the R-value; the higher the number, the more effective the insulation at slowing the heat transfer. A typical R-value for fiberglass insulation is R-19.

It’s important to know that high R-value doesn’t necessarily mean that the insulation will do the best job for your home. For one thing, R-value does not measure how well the insulation blocks heat movement through convection or radiation, only conduction. Then there is the issue of installation, since the highest R-value available is no good if the installer placed it poorly and left areas where heat is still able to escape or enter. Insulation that is compressed or crushed also loses most of its R-value, and if the insulation isn’t the right type for the section of the house it is supposed to heat-shield, the R-value will again be of little use.

Professional insulation installers are skilled at balancing R-value with other factors to make sure that a home has the proper barrier against heat that will keep it cooled down in summer and warm in winter. Our insulation experts at J & W Heating and Air use a variety of types of insulation, such as bats and blown-in insulation (excellent for filling in oddly shaped spaces). They can survey your house and make sure that it receives the ideal insulation in Orange Park, FL for all seasons. Contact us today to set up an appointment with one of our insulation specialists.

Why Call a Professional for Air Conditioning Services

July 23rd, 2014

There are many reasons you may need air conditioning services in St. Augustine. Maybe you’re a new homeowner installing a brand new system, or maybe you’ve noticed reduced efficiency or other repair needs with your air conditioner. Whatever the reason, there’s no time to wait. Here are some of the reasons you should call for air conditioning services today.

Air Conditioning Repairs

If you need air conditioning repair, don’t wait to call a professional today. Loud noises coming from your air conditioner, high energy bills, reduced cooling capacity, or any other problems can all indicate a serious problem. Besides, summer is the worst time to be without AC if your small repair problem leads to a sudden breakdown. Call for air conditioning repair today to prevent your system from developing any further damage.

Air Conditioning Maintenance

One reason to call for air conditioning services even when everything seems to be running smoothly is air conditioning maintenance. During maintenance, a technician performs services such as cleaning the coils and adding lubricant, all of which are likely to improve the overall performance and efficiency of the system. We recommend scheduling maintenance once a year or signing up for a maintenance program to protect your system.

Air Conditioning Replacement

Your older air conditioner may not have much time left. After ten years, air conditioners tend to become a lot less efficient and are more likely to need repairs. Replacing a system that has broken down may actually be more costly than replacing your system now. Besides, air conditioning replacement allows you the opportunity to upgrade to a more efficient system.


You can also upgrade your air conditioner even if it does not yet need replacement. One common air conditioning upgrade is a programmable thermostat, which is more accurate and has more settings and features than a manual thermostat. Another common upgrade is a zone control system which allows you to adjust the temperature separately in different areas of your home for increased comfort and energy savings.

When you need any of these air conditioning services in St. Augustine, call J & W Heating and Air to talk to a professional technician.

3 Reasons to Schedule Air Conditioning Maintenance Now

July 15th, 2014

Have you scheduled air conditioning maintenance in Jacksonville, FL yet this summer? It’s not too late! Though many people only ever call for air conditioning services when they need repairs, air conditioning maintenance is an important service offered by many AC professionals. During a maintenance visit, a technician will inspect your AC system, clean the coils, check refrigerant levels, and perform any necessary adjustments. This is an important service if you want to save money and reduce the likelihood that your system will break down in the middle of summer. Here are three reasons to schedule air conditioning maintenance today:

  • Increased Performance: After professional AC maintenance, you may notice increased performance from your air conditioning unit. Often, small problems, such as dirt build-up on the evaporator or condenser coil, can cause your air conditioner to perform poorly. Similarly, a faulty thermostat or low refrigerant levels can reduce the cooling capacity of your AC, causing you and your family some discomfort. During maintenance, your AC technician will check for these problems and recommend services, helping your system perform at its best all summer long.
  • Lower energy bills: Air conditioning maintenance can actually help to lower your bills and keep them low all summer long. Over time, an air conditioning system eventually reduces in efficiency. However, air conditioning maintenance restores efficiency somewhat as parts are cleaned and adjusted. Lubricating motors and adjusting refrigerant levels, for example, helps everything run smoothly, which means your system won’t have to work harder and use excessive energy to keep you cool.
  • Fewer repair calls: If you’ve ever had to make a repair call in the middle of summer, you know it can be quite a hassle. An air conditioning maintenance visit ensures that problems are found earlier so that repairs can be scheduled right away, and your system is less likely to fail suddenly when you need it most. Furthermore, maintenance helps to prevent damage to your system so you won’t have to replace it sooner than is necessary.

Air conditioning maintenance is an important part of owning any AC system. If you live in the Jacksonville area, call J & W Heating and Air today to schedule a visit from a technician.

Why Is My Air Conditioner Not Blowing Cool Air?

July 10th, 2014

While a warm breeze can feel nice every now and then, you don’t want to feel one from your air conditioning unit. If you turn on your air conditioner and you cannot feel cool air, it’s time for air conditioning repair. We’ve detailed some of the most common reasons your AC stops blowing cool air, but you should call a technician to properly diagnose and repair your system.

Low Refrigerant Levels

In order for your air conditioning to work properly, it needs a constant supply of refrigerant. Refrigerant continuously moves through your AC system, changing from a gas to a liquid to a gas so that it can absorb heat from your home and release it into the air outside. The only way for refrigerant to leave your system is through a leak in the refrigerant lines.

Compressor Problems

The compressor is one of the most important components in your AC. As refrigerant passes through the outside unit of your AC, the compressor then compresses it into a hot, high-pressure gas. This way, the refrigerant can move to the condenser to release heat into the air. The compressor is an intricate mechanical part run by a motor inside the condenser unit, and a number of things can cause it to malfunction, such as a faulty motor. Sometimes, you can attribute compressor problems to the natural wear your system goes through over the years.

Dirty Evaporator and Condenser Coils

The indoor evaporator coil and the outdoor condenser coil both assist with heat exchange. Over time, the coils can get dirty, and the proper absorption and release of heat cannot take place. This is why it’s important to schedule maintenance once a year so that a technician can clean both of the coils and inspect your system for any potential problems.

These are only a few of the things that may cause your air conditioner to blow warm air. Only a qualified technician can give you accurate information regarding the source of your issue and recommend repairs. If you can’t take the heat, contact our team at J & W Heating and Air today for air conditioning repair in Orange Park, FL.