Stack EffectThe furnace is responsible for heating your indoor space, but as the homeowner you also have a role to play to keep that warm air inside. If you don’t do this, then you are losing out on the heating benefits and ultimately you will pay the price in utility bills.

Multistory homes face a challenge when trying to keep the warm air indoor and this is because of the stack effect.

Understanding the Stack Effect

While skyscrapers have been seen to be among the most vulnerable when it comes to the stack effect, two story homes also face a similar challenge. Basically, the stack effect is a condition where the house acts like a giant chimney which funnels warm air up towards the roof until it leaves the structure altogether.

This effect takes place when the outdoor temperature is significantly lower than that of the indoors. Because of the fact that cold air is denser than warm air, cold air enters the home at the ground level and pushes the warm air up. This movement creates an airflow which results in more cold air being pulled in and drafts intensified. Taller structures tend to experience much stronger air flows.

This is the reason why revolving doors were developed immediately after the first skyscrapers. The suction force at the ground level was exceptionally strong especially during winter that people would literally struggle to pull the doors open.

The Stack Effect Problem

Obviously, the stack effect makes you lose treated air and thereby wasting energy and incurring lots of heating expenses. In addition, the stack effect problem tends to worsen overtime.

Stronger airflows put lots of pressure on fine cracks, cracking weather stripping, crumbling masonry, and other vulnerable areas where drafts barely get through. When this pressure is sustained, the gaps widen and expand thereby intensifying the airflow leading to an accelerated energy loss.

What You Should Do

The single most valuable and effective solution to the stack effect is insulation. The reason you have the stack effect is because warm air manages to escape once it reaches the highest level or floor of your house. In most cases, the escape happens through leaky air ducts, cracked ceiling, recessed light fixtures, or even insufficiently insulated attic floors. Once the warm air gets to the attic, it finds spaces through which it can escape to the outdoors.

It is therefore important to seal drafts and maintain insulation in every space all over your home. The barrier between your top floor and the attic is a critical area you should consider in your fight with the stack effect. Where insulation has degraded or there are certain air leaks you probably can’t locate, you can contact  a local HVAC professional or a climate control specialist to help you.


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Air ConditionersWhen renovating a much older building especially in urban areas such as Florida, adding modern conveniences can be quite a challenge. One of these conveniences is air conditioning. Most older buildings do not have space for ductwork installation and the electrical systems present may not be sufficient to handle the AC equipment load.

Upgrading the electric can be quite expensive and finding a space for the air conditioning equipment is a much bigger problem. If you don’t get this right, you may end up damaging the original floors, plaster, and woodwork. Even when you consider the best case, you may still have to give up your closet space or lower the ceilings a little bit in order to make room for the equipment.

The way out on this is to consider alternative air conditioning systems suitable for your older home.

Ideal AC Options for Older Homes

There are three options you can settle for when updating air conditioning for your home and these include:

VRF Systems

These systems are one of the best contemporary AC solutions for older buildings. VRF systems consist of an outdoor condenser unit as well as indoor air handlers. This is much like the traditional central AC systems. The beauty with these systems is that you can install them without ducts. What they use instead are refrigerant lines which connect many smaller indoor fan coil units throughout the space.

The new VRF system technology provides both cooling and heating in different areas within your indoor space at the same time. By using multiple indoor units, you can zone the different spaces and control them individually.

The other advantage with VRF systems is that they operate quietly and in an energy-efficient manner since they variable speed compressor only runs at the required capacity for the load at hand.

Using this system ensures that your home cools or heats evenly without cold or hot spots. When coupled with mobile control technology, you can control the various settings right from your smartphone.

Ductless Mini Splits

The reason they are called split systems is because they consist of two major components: the condensing and compressor unit.  Both the indoor and outdoor units are connected via a conduit of electrical and refrigerant lines. Typically, the outdoor unit is installed under a window or where available, a mechanical room. The indoor unit is wall mounted or stored in the ceiling.

Because of their size and cooling capacity, ductless mini splits are mostly used for cooling one or two rooms.

High Velocity Systems

This is one of the smartest HVAC systems for older homes because they are designed for spaces which do not accommodate large ducts. The high velocity system includes flexible ducts that measure only about 2 inches in diameter and which can be fed around obstacles and through walls without the need to cut big holes in the ceiling and walls. To reduce noise, the ducts are also insulated.

Sometimes choosing the right option for your home can be tricky and this is why you require advise from HVAC professionals.

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Hygrometer and Thermometer
Hygrometer and Thermometer

Many homeowners ask this question because there has been a lot of controversy on what exactly is the ideal humidity level for a home. The recommended optimum indoor range is approximately 35% relative humidity, but some homeowners tend to work with 30% to 40%. Anything above this range results in condensation particularly on the windows thus opening the door to mold which in turn causes allergy and respiratory problems.

Dangers of Humidity Variation

Dust mites which are the principal causes of allergies thrive in the regions of 50% relative humidity. Mold on the other hand gets comfortable when the humidity levels hit 60%.

On the flipside, too little humidity can cause issues such as dry skin, dry nose and throat, and static electricity. This can ruin electronic devices such as VCRs, computers, and DVD players. Having a proper and consistent humidity level is important for your doors, floors, and other wooden structures which have a tendency to crack, shrink, and warp if not well humidified.

Energy Savings

Keeping your home humidity level within the recommended range benefits you immensely in terms of energy savings. When the indoor air is well humidified, you tend to feel warmer and more comfortable which means you can turn your thermostat a few degrees down and still feel warm.

The humidity of your indoor air determines the much heat it can hold. When humidity is higher at a certain temperature level, air tends to hold more heat. Therefore, it is a very important factor in determining the speed with which sweat evaporate from your skin.

For comfort, the humidity in your home must be controlled together with the air temperature. If you take an example of a typical summer day where the humidity inside your home is higher, the air conditioner will need to run longer to offset both the warmth and humidity in the air. This will cost you more to run the AC.

Controlling the Humidity Level

There are several ways you can control the level of humidity in your home. Some of them include:

  • Installing a modern air conditioning unit with a capacity to balance the air in your home
  • Installing ventilation fans in the bath areas and in your kitchen to help eliminate damp air
  • Investing in a dehumidifier

When you first start your humidifier, set your humidistat at 35%. In about two days, assess the quality of air and if it feels dry, add another 5% and wait for two more days. Do not forget to clean your humidifier and set it up properly before it starts running. Remember it is not just for you that you are concerned about the humidity level, but also your family and guests who may be coming to spend with you.

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hvac-lifespan-lengtheningHVAC equipments such as air conditioners, furnaces, washing machines, and dryers have different lifespans. Bearing in mind that they are also costly to replace, it really helps if you know the length of time they are meant to serve you so that you do not mistakenly replace units that still have life in them. Also, knowing the duration of service will give you the impetus to do everything in your power to maximize their lifespan.

Central Air Conditioning Units

These are common in homes and they come in different brands and models. Air conditioning units are made to last anything between 10 and 15 years. However, this is dependent on a number of things including their proper sizing and regular maintenance. When it comes to AC systems, bigger is not necessarily better. For your AC system to serve you for this period of time, it must be properly sized with your home cooling needs.

Oversize AC units tend to cycle on and off frequently and this wears them out making them susceptible to breakdowns. On the part of maintenance, ensure your AC unit is inspected at least annually and whenever you notice something unusual. Check the filters and have them replaced on a monthly basis. The outdoor component should be free of foliage and debris.

Forced Air Furnaces

During winter, furnaces are indispensable. They do the hardest job of heating your home and ensuring that you and your family are comfortable. Typically, a furnace should last you 20 to 30 years. However, this is possible if it is well maintained and looked after. Just like in the AC, ensure the furnace filters are changed regularly preferably on a monthly basis. The motor housing, air blower, and belts should also be cleaned and the heat registers vacuumed as needed. This will reduce wear and tear of your furnace and lengthen its lifespan.


The vinyl vent tubing of your dryer should be replaced with more durable aluminum. If used as per the manufacturer’s instructions, dryers will last you for up to 13 years. Overdriving clothes easily wear out your dryer and makes it energy inefficient. After every load, clear out the lint trap as this tends to clog the system and cause fires.

Water Heater

Water heaters come in different sizes based on your household needs. Standard water heaters are made to last between 10 and 11 years while tank-less water heating systems can last you for up to 20 year. The water heater should be drained on an annual basis and the anode replaced as required. If you can, install low-flow fixtures as this will reduce the amount of hot water flow thus saving your water heater of wear and tear.


Your refrigeration system can give you service for between 9 and 13 years. For optimal performance, it’s advisable that you do not overfill or under-fill the fridge. The refrigerator temperature should be set between 37 and 40 degrees Fahrenheit. Older refrigerator models should be vacuumed at least twice in a year and the gasket replaced if it looks cracked or worn out.

Armed with the above knowledge, it is up to you to decide how to maintain your electrical appliances and when to replace them.

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hvac-servicemanExtended HVAC maintenance has become a must-have service for many homeowners simply because frequent breakdowns and HVAC system inefficiencies are on the rise. Most companies offer service contracts also known as maintenance agreements when installing new systems or repairing older ones.

While these contracts can be a blessing, they can also waste your cash if not well understood and executed.

Understanding HVAC Service Contracts

At their simple definitions, service contracts are mutual agreements between a HVAC service provider and a homeowner where you are obligated to pay a fee so that the company can continuously or periodically service your HVAC system.

The most basic service contracts include checkups and tune-ups especially at the beginning of winter that is late fall and just before summer. Some contracts are customized to include parts and labor for services rendered during periodic checkups.

At times, service contracts have a clause that entitles you to priority treatment which can significantly save you time and discomfort when your system fails at the height of extreme temperatures. Inasmuch as many services in contracts are preferred, they also come at a cost which means you should always balance what to include in your service contracts vis-à-vis your budget.

Why Regular HVAC Maintenance is Beneficial

If you buy a service contract, chances are high that you will get an annual tune-up as one of offerings of the contract. This tune up is very important because it increases your system efficiency. During the tune-up, your designated technician will inspect and change your filters as well as spot other problems which impact on the overall efficiency of your HVAC system.

Qualified technicians understand the nature of HVAC problems and they can pick them up quickly during the system inspection process. This is critical because delays in fixing these problems can lead to a damage of your system.

How Much Do Service Agreements Cost?

One of the major reasons that is making homeowners not to purchase service contracts is the cost. Typically, the cost lies between $150 and $500 annually depending on the amount of services that you are offered.

A system that is newer and still under the manufacturer’s warranty may not cost as much. That being said, some manufacturers insist that routine maintenance should be done if the warranty is to stay in place.

One of the things to keep in mind is that whether you have had a repair job or not, you will be required to foot the service contract fee each year. Assuming you are paying $250 per year for the service contract and you happen to go for 5 years without a major repair, the amount you spend will certainly be higher than it would have cost you to have repairs done on the unit.

Before you sign up for any HVAC service contract, you should first determine the cost you would incur for non-contractual maintenance agreements and then compare this with the service contract fee.

All said and done, you are more secure and protected with a service contract agreement from a professional and reputable HVAC contractor. It’s your license to an effective and efficient HVAC system.

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If your current air conditioning unit is old or failing, you should consider replacing it with a two stage AC system. These systems give you better cooling and energy efficiency which simply means you can put your energy costs under control without sacrificing your comfort.

Understanding a Two Stage Cooling System

If you are wondering what the difference is between a standard AC system and a two stage unit, it is all in the compressor. Standard systems also referred to as single stage cooling units, run at one speed only and that is high speed.

If you want to cool your home under a standard AC system, the unit cycles at full blast whether your cooling needs are high or low. Oftentimes this results into wasted energy.

In the vein, a two stage cooling system serves to conditions your indoor air, but at two speeds; high and low. The two stage AC systems also incorporate variable speed air handlers which help in adjusting the air moving into your home thus giving you the ultimate experience in energy efficiency and comfort.

How Two Stage Cooling System Operates

As opposed to the single stage AC systems, two stage units run at their lower speed for a period equal to 80% of the time. At this speed, the cooling system can meet the cooling load of your home. Even as the temperatures go up, a two stage system running at its lower speed is sufficient to keep your home comfortable.

Standard AC units tend to shut on and off, but a two stage unit runs continuously. The benefits of continuous running include longer life cycle, better dehumidification, lower energy costs, and energy efficient performance. When the temperatures become extreme, your two stage AC system precisely adjusts its output to keep up with the demand.

Benefits of Two Stage AC Systems

Looking at the energy efficiency that comes with the two stage AC system and the reduced utility costs, there is virtually no reason why a homeowner should stick with the old single stage cooling system. To add to these benefits are:

Improved Humidity Control

An AC running continuously can help dehumidify your indoor air better. When you have short and strong blasts of air, your AC system doesn’t get enough time to remove water vapor from your indoor environment. However, for a continuous running AC system, the coils get sufficient time to gradually draw water vapor into the AC system and then evaporate.


Because the two stage cooling system operates continuously, it doesn’t result into drastic deferring temperatures within your home. This means all through the cycles, you will be comfortable and experience little variation if any in temperature.

These systems also have a longer service lives because the ons and offs result into wear and tear. The only thing you need to take care of when operating two stage AC systems is to schedule annual preventive maintenance exercises.

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ac-tune-up690Your AC system is one of the largest capital expenditures in your home. This means you need to take good care of it so that it can serve you for a long time. The simplest way you are guaranteed your AC system will serve you in an effective manner is through an AC tune-up.

The Common AC Tune-Up Services Offered

Inefficient HVAC systems have a negative impact on your resources because they almost double your energy consumption. Similarly, the financial burden posed by frequent breakdowns also consumes your financial resources. This is precisely why the HVAC industry has a collection of tune-up services targeted at maintaining your AC units in their best form possible. Among the tune-ups services available include:

Checking Thermostat Calibration – A thermostat is a sensitive component and at times when exposed to dirt, it tends to malfunction. Whenever the thermostat is clogged with dirt, it can make the entire system to overheat which waste energy and exposes some of the AC components to excessive heat. When you hire HVAC professionals, they clean up and restore the calibration of the thermostats.

Monitoring of Refrigerant Pressure – The moment your AC unit starts to experience pressure and temperature changes, the problem could be in the refrigerant. HVAC technicians inspect your unit for refrigerant leakages and seal them to avoid further fluctuations in temperatures and pressures. In case of refrigerant leakages, the experts who are licensed by EPA to handle refrigerants will replenish your AC unit with the right refrigerant.

Inspection and Clean-Up of Condenser Coil – As far as cooling and heating operations are concerned; the condenser coil is the center of activity. However, when it comes in contact with polluted air, its effectiveness may deteriorate. AC professionals assess and clean all the condenser coils using specialized materials and equipment so as to bring them back into a working condition.

Inspection of the Blower Motor – The reason why you should not take chances with the blower motor is because a small element of dirt can cost you more than 20 percent in air conditioning inefficiency. Ensure every part of the blower system is cleaned including the blades.

In addition to the above services, you can also get the AC technicians to:

  • Clean condensate drain
  • Lubricate moving parts as required
  • Test condensate pump
  • Test starting capabilities
  • Measure amperage and voltage
  • Check Superheat and Sub-cooling

For a detailed coverage and an in-depth explanation of each of these tune-up services, get in touch with an established and reputable HVAC company.

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cooling your homeEvery homeowner desires a HVAC system that is balanced and supplies the right amount of cooled air to each and every room within the house for even air conditioned spaces. However, it should also be appreciated that balancing a HVAC system is not an easy job and some floor plans may pose difficulties when it comes to system balancing. Most of the affected homes in this regard are long ranch style homes and two story homes.

When your home experiences uneven cooling in some rooms, you need expert diagnosis so that the root cause can be identified and sorted once and for all. Among the reasons why you experience differential cooling include:

Dirty Air Filters

Filters play a crucial role in barring particles from coming into your indoor space. However, with time, these filters become dirty and as such needs to be cleaned or replaced. The recommended replacement is usually once a month but if you are living in an area that doesn’t have a lot of dust, you can change your filters once in three months.

Dirty filters interfere with the air flow and they can let in some particles that clog your coils and limits their cooling capacity.

Closed Air Registers

When air registers are closed, a number of problems may result some of which cause unbalancing of your system and development of a condensate around the perimeter of the register. Such conditions encourage the growth of mold over the surface and accumulation of debris which may effectively block air flow.

Open Windows and Air Leaks

Although this may seem an obvious reason, fully open windows can result into massive streams of warm air coming into your home thereby affecting the cooling system performance. Your AC unit will have to work extra hard to cover up and manage the incoming air. Putting blinders and window films can go a long way in blocking UV rays and stabilizing the room temperature.

Damaged Ductwork

Depending on how your home is designed, you may want to take the initiative and poke your head into the attic just to check if your ducts are okay. Ductwork tends to pull apart gradually at the points of connections. Also, small animals may find their way into the attic and poke holes in your duct system. If your attic is warmer than your house, you should investigate because there could be leakages resulting from the ductwork. Even newer ducts can at times be crimped by their hangers or be trampled by people as they go about their business in the attic. This can interrupt the air flow into your indoor space.

It is important to remember that you may never achieve total perfection because one room will always be a little warmer or cooler than the other. However, do not stand and watch as the temperature difference grows huge. Let your HVAC professional know the problem immediately.

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about usMiami Beach is a coastal resort city located in Miami Dade County, Florida. The municipality is located on a number of man made and natural barrier islands between the Biscayne Bay and Atlantic Ocean. It is the bay that separates the beach from Miami. Since the early 20th century, Miami Beach has been rated as one of the most preeminent beach resorts in America.

With such a vibrant city, you expect lots of families and homeowners who live and work within the city. For this population which is over 90,000 people to be comfortable in their homes, they need reliable HVAC services. AC Repairs Miami Beach is one such company that has chosen to serve the people of Miami Beach. We complement the cultural diversity and growing resort area that is Miami Beach with high quality AC services.

Locally Owned and Operated

AC Repairs Miami Beach is part of the interesting history and heritage of Miami Beach. As a locally owned company, we are proud to serve the residents of the city with a number of AC services geared at making their family and individual lives beautiful.

Because we understand the unique needs of the residents here, we have come up with products that address each of these needs in a comprehensive manner. Since we are part of the society, our policy is to make the locals freely interact with us.

Expertise and Experience

The only people we hire to attend to your AC installation and repair needs are experts and innovative technicians. Through our rigorous recruitment process, we conduct background checks and confirm credentials including drug histories of our potential employees before absorbing them into our workforce.
After being hired, we take the employees through a retraining program so that they can be aligned with the demands of the industry and develop familiarity with new developments.

How We Operate

Miami Beach is a city that never sleeps and we too do not sleep. We are determined to keep pace with the activities of the city including attending to failed AC systems in homes. Our round-the-clock operations ensure that you are covered wherever you are in Miami Beach. We have invested in quality equipments and a fleet of vehicles to enhance our mobility across Miami Beach.
Customer Policy
We have an effective customer management system in place that ensures feedbacks, complaints and queries are channeled through the right path and comprehensively addressed to the delight of our customers. Of all the assets we have, our customers are top of the table and because of this; we do everything we can to make them comfortable in their homes and feel taken care of.

The Brands We Service

Being a premier AC repair company in Miami Beach, we have struck strategic partnerships with the leading brands in the industry. This guarantees our customers top of the range services. Among the brands we have a working relationship with include Goodman, Trane, Bryant, York, American Standard, Carrier, Amana, and Lennox.

We invite you today to contact us and have your home air conditioning needs attended to in the most professional manner.

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Commercial refrigeration systems repair/service and installation.
Commercial refrigeration systems repair/service and installation and rentals.

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