About Commercial Heating and Air Conditioning

Commercial heating and air conditioning is commonly referred to as HVAC systems, which stands for Heating, Ventilation and Air Conditioning systems. These systems are used for maintaining comfortable temperatures and air quality in homes and large buildings. The main purpose is to make the environment healthy and safe in terms of temperature and humidity. The laws of heat transfer, fluid mechanics and thermodynamics are used for designing.

HVAC systems are aimed at improving air quality, providing ventilation and maintaining pressure. Room air distribution methods are employed for delivering air. The ambient conditions and fresh air requirements must be specified whenever designing an HVAC system.

Heating

The heating systems used in HVAC can be any of the several kinds available. In cold areas, central heating is implemented. The system consists of a furnace, boiler and heat pump. Air control is maintained from a central location like a furnace or mechanical room.

Water is used as a medium for transferring heat. Pipes and ducts serve as passage for the heated fluid which is transferred to rooms through radiators. Radiators may be wall mounted or fixed under the floor.

The pump circulates water and ensures an equal supply of heat to all locations. If the weather is warm, the same pipes and ducts are used for cooling. The heating process may also be achieved through resistive heating. An electric current is used for heating conductive filaments.

There are a few considerations which should be kept in mind. Heat pumps are efficient but more expensive. They should be used in moderate climates only. Radiators should be situated near windows or in the colder parts of the building. Harmful gases are formed if the heating system is not working correctly. This is why proper ventilation is a must for every commercial heating and air conditioning system.

Ventilation

Ventilation is classified as mechanical or forced and natural. In the former kind, an air handler is used to control the air quality through dilution of inside air or substituting it with fresh air. Mechanical or forced ventilation is not energy efficient in humid regions.

In these areas, exhausts, direct drive fans are used for controlling air quality and humidity as well. In cold areas, ceiling fans can also be utilized to achieve ventilation. They circulate the warm air in the upper portion through the entire room.

Natural ventilation does not use any mechanical equipment. It ventilates a room with open windows, vents or openings in the wall. It works well only in small areas but is still widely used due to economical prices and no energy consumption.

Air Conditioning

Air conditioning systems remove heat from a room using radiation, convection and even heat pumps. The process is termed as the refrigeration cycle. The systems are designed not only to cool the area but also to ventilate it and control air humidity. Sophisticated designs employ a reversing valve which automatically switches between heating and cooling a room depending on the outside climate.

There are central cooling systems but they can be installed only when a building is being constructed. Retrofitting them in an already built structure is difficult because the ducts are very large. In such cases separate coils for indoors and outdoors can be used. The two units are connected through pipes, providing a passage for the refrigerant.

Dehumidification is important in air conditioning systems. Evaporators or open chiller cabinets are used for the purpose. Basements serve as good locations because water density is higher in the air at lower levels and temperatures. Filtering is also necessary for removing particle sand gases, which can be dangerous. The filtering and condenser coils must be cleaned regularly because the dirt built – up can damage the compressor.

What to Look for in a Heating and Air Conditioning Contractor

Most of us couldn’t imagine what life would be like without our heating and air conditioning units. This is especially true during the worst of summer and winter when temperatures can make life practically unbearable if you don’t have the help of an air conditioning or heating unit working to make things comfortable. That’s why, if yours suffers any problems or you simply need to have it inspected, you don’t want to waste any time or money on heating and air conditioning contractors who won’t do the best job possible. Fortunately, there are some easy ways to make this process a simple one.

Ask Around

This is probably the easiest way to get a short list of excellent heating and air conditioning contractors in your area. Whether you need heating or air conditioning installation, repairs or inspections, no advertisement is better than someone you trust reporting that they had a good experience with the professional they used.

Go Online

If you don’t know enough people who have used heating and air conditioning contractors, you’re far from out of luck. Go online and take advantage of the countless review sites out there. Obviously, you don’t know the people leaving the reviews, so take each with a grain of salt.

Ensure They’re Licensed

The necessary credentials will differ by state, but every serviceman who wants to work on your HVAC unit has to be certified and licensed to work. If they’re not, don’t bother considering them, even if you’re offered a discount to ignore this issue. For one thing, it doesn’t say much for their professionalism if they won’t even take the time to get the proper credentials necessary to work legally. However, it may also reflect that they’re out of the loop in terms of best practices in the industry.

On this same note, never let anyone on your property until they’ve proven they’re insured. Otherwise, if they get hurt or break something, you could be the one held responsible.

Confirm They Know Your Make and Model

Finding the right heating or air conditioning service means asking about which makes and models a serviceman has experience with. Just like not all mechanics are experienced with working on certain cars, many repairmen simply may not know the type of HVAC system you rely on. Always go with those who have trained on and/or worked on your specific type of unit.

Always Get Estimates

Always get a quote before allowing anyone to work on your unit or install one for you. Preferably, you want it in writing so there’s no confusion later.

Furthermore, when you want heating or air conditioning installation, a serviceman will generally visit your home to take a look at what the process will entail prior to providing you a quote. However, you should expect the same kind of service when you simply want heating or air conditioning service on a preexisting unit. Until they see your unit, don’t take any quotes seriously.

Don’t put off repairs, inspections or installation a minute longer. Using the above advice, get the contractor you need today.

5 Tips for Choosing Your Next Heating and Air Conditioning System

Most of us can’t imagine living in a place where the heating and air conditioning is hit or miss. After all, there is much to be said for being able to step inside on a hot summer day and finding respite or walking into a toasty warm room after spending time in blustering wind and cold. Consequently, when it comes to heating and air conditioning systems for your home, you want to be sure that whatever system installed is able to meet your home’s needs.

But there are a number of heating and cooling systems available on the market, and sorting through the various pros and cons of each can be time consuming. Rather spending time making phone calls and studying numerous websites, here are some things to keep in mind when selecting your next heating and air conditioning system:

· Typically, if you live in a climate where the temperature rarely goes above 85 degrees Fahrenheit then having both a heating and air conditioning system is overkill, and you can get by with just a heating system.

· Quite often, the simplest solution to your heating and cooling needs is the best one, not to mention, the least expensive one.

· Conversely, just because you opt for the simplest heating and air conditioning system solution+, it doesn’t mean that you should settle on a lower quality system. That $300 you save now can come back to bite you a few years down the road with a $1,000 repair that could have been avoided if you had spent the little bit extra at the outset. A good quality furnace can last for as much as 20 years – especially if it properly maintained!

· Don’t buy a bigger system than you need. Not only will this cost more at the outset, but it will cost more to operate. In fact, having an oversized system will actually cause excess wear and tear on your heating and air conditioning system’s components. Ask a local HVAC specialist to tell you what size system is best suited for your home. (This determination is made based on the size of your home, the amount of insulation and the local climate.)

· Choose a heating and air conditioning system that allows you to use local HVAC specialist. If your system must be serviced by someone from out of town this means you will be waiting considerably longer when there is a repair needed.

Selecting a heating and air conditioning system does not need to be a stressful process.

The Basics of Central Heating and Air Conditioning

In central heating and air conditioning systems, the same ducts are used to force either the cooled or the heated air into your home, depending on what the weather is like. Where the winters are quite chilly, central heating is important. These systems can be fueled with oil, electricity, gas, or solar power. The basement is where the primary heating appliance is usually located. Air ducts help deliver the heat by sending steam through pipes and room radiators. Insulation is key to maintaining a good level of heat in the house, because poor insulation will allow 60% of the heat to escape.

In places where summer temperatures get very hot it is standard for people to use air-conditioners to keep themselves nice and cool. Simple principles of refrigeration run electric air conditioners by removing heat from the air. You should look into an air-conditioner that has a heat pump to keep things cool in the summer months and warm throughout the winter. The heat pump delivers heat from the outside air. In summer, it takes heat from the inside air and pumps it outside to create a cooler home. It has tubing which is filled with refrigerant and connects the indoor air handler and the outdoor condenser/compressor unit. The refrigerant cools and warms the coils, and then circulates the air.

Central heating and air conditioning tends to dry out the air in your home, which may affect your family members health-wise. Asthma and cough problems can sometimes be alleviated by utilizing humidifiers, in order to better moisturize the air around them, which may improve lung function. Humidifiers are devices that can be as complex as battery-powered or electric devices, or as simple as pans of water set on the radiator. Some humidifiers do not create any steam. If this is the case, make sure you disinfect the humidifier from time to time with a liquid solution made for that purpose.

If there is high level of humidity where you live then it is good to install a humidifier in the bedrooms so that clothes and linens do not get moldy. Someone who lives in a humid, muggy coastal region will find a dehumidifier to be very useful, particularly during cold months.

Your contractor can make all the difference when it comes to getting a good central heating and A/C unit, so be sure to deal with a contractor that you know has a good reputation. For your equipment to run properly it must be correctly installed and maintained. A central heating and air conditioning system can be expected to last you for at least twelve years if the units are taken care of properly. One important thing to remember is to perform routine maintenance, for example, check for leakage, and check to make sure it is draining as designed. It is important to keep a close eye on the amount of water that is in the system to make sure that it isn’t too full. Check for any cracks or leaks in the hose connections and to ensure that the condensate tube is draining properly. The filter should be changed about once a month, depending on the model

Professionals Ensure Reliable Heating and Air Conditioning

Many towns across the US subjects its residents to varying temperature extremities. These conditions require high quality systems. These units must be well kept for reliable heating and air conditioning. A unit under repair leaves the building unbearable. Fans are not effective in areas where temperatures increase above one hundred degrees. Neither are blankets when the temperature gets below freezing. Central air systems have three very important functions. They keep the temperature in a room or building at a comfortable level. Filtering provides better air quality. A reliable unit protects residents from conditions such as heat stroke or frost bite. Air temperature regulation is more than just a convenience. A unit can be a life saver under extreme conditions.

Romans are credited with the development of ventilation systems. They originally used this type of design throughout private homes and public bathing facilities. During this time period, steam was filtered under a pillar raised floor. Air quality was not hindered by using this method. Today the equipment used for heating, cooling, and air ventilation is far more advanced. Air units are placed outside of a home or business. A heating system in most cases is placed within the building. Both connect to air ducts which span throughout the structure. Hot or cold air is circulated through the air ducts until the set thermostat temperature is reached. The unit then kicks off. When the temperate deviates from the desired setting, the system once again begins circulating air. This is continual process only stops when the unit breaks down or is turned off.

Air Conditioning Contractor: What Can They Do to Help?

Frequent use of these systems causes dirt buildup inside the ductwork. If filters are not high enough in quality, this buildup can also reside on internal parts. Cleaning is an essential process for all types of air systems. An air conditioning contractor can perform tasks needed to keep the unit clean. Servicing prevents parts from being bogged down. Ventilation ducts which suffer from this issue can grow mold. Air quality is reduced and becomes a health concern for all inhabitants. Services are available to clean this portion of heating and cooling systems. Contracting professionals check the ductwork as well as the unit for this problem. They clean parts during routine maintenance. Depending on the extent of their services, they may also have the capability of cleaning these other components.

Many individuals are reluctant to employ the services of a contractor. The fear of high repair costs is the most common reason for delaying the inevitable. In reality, a contractor can be the best friend of a homeowner. Most individuals know nothing about their air systems. They are capable of turning them on, changing the filters, and enjoying the provided comfort. Apart from simple operation, a heating or air unit is like a foreign object. This creates problems because a system has to be properly serviced to retain performance. You can benefit from contractor knowledge. Problem identification during servicing, purchasing advice, installation assistance, and dependable maintenance are just a few advantages received through a reliable expert. Homeowners save more when employing their services than by avoiding them.