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How Geothermal Heating Systems Work

How Geothermal Heating Systems  Work

commercial heating services in MissouriAmerican Services Heating systems installation in Wentzville knows that geothermal heating systems work in a very unique way to “naturally” provide a heat source to commercial buildings or other environments. The earth stores heat within it. In fact, it maintains that heat at about 50 to 70 degrees Fahrenheit. This is a stable figure, meaning it is completely renewable when it is tapped into, and it is a natural source, there are no chemicals or side effects from using this type of heat source. Yet it is powerful and plentiful enough to heat an entire building without furnaces or boilers.


In order to utilize the geothermal heat that is underground, scientists have found that they can literally pump it out with the use of a geothermal heating system. A heat pump is used.

It is a  mechanical device that transfers the heat from one place to the next. In this scenario it’s as simple as pulling up the heat from the Earth’s soil and then transferring it directly into the building installation. The heat is transferred by using a network of tubes throughout the building connecting to the heat source. These tubes are called closed loops and are filled with a liquid such as a refrigerant, water,  or occasionally antifreeze. The liquid that is within these tubes will travel into the ground, absorb the earth’s natural heat source and then it is recirculated through the system back into the building. The heat is then released from the liquid element and is transferred into the building. In this continuous circuit the liquid element then travels back down to the earth’s heat source and the process just keeps repeating itself. This loop system allows for geothermal heating systems to provide a constant flow of heat to the buildings.

Heat That Cools

Not only can geothermal heating systems provide heat to a building, but it can actually cool the area off as well. The system is quite the same in that the same loop is used, only this time it is in reverse. The valves within the system allow it to be switched to cool instead of to heat. Now the heat from the building is absorbed through the tubes containing the very same liquid elements and cycled out of the building. During the summer months this allows for an additional benefit because the earth does not need to be heated and there is still a large amount of heat in the liquid, Energy can be tapped into in order to have it heat the water for the building. This eliminates the need for a hot water tank or heater operations which saves significant energy efficiency and utility costs.

Commercial HVAC Preventative Maintenance Works

Commercial HVAC Preventative Maintenance Works

commercial HVAC services in MOAmerican Services commercial HVAC installation in South County knows that a healthy workplace means high productivity, if regular inspections of your commercial HVAC system are not performed, business owners risk an unexpected breakdown that can interrupt daily work flow.

By introducing a preventive maintenance check and services list to your maintenance staff, you’re taking the initiative to check equipment in anticipation of problems, this is known as preventative maintenance. What does performing preventative maintenance on your commercial HVAC set up mean?

Just like performing regular maintenance to your automobile, performing regular maintenance to your HVAC system will prevent future breakdown of your heating, cooling, and ventilation components.

Take the time to ensure that everything operates smoothly that there are no parts that need replacing. Some of the critical components on your preventive maintenance checklist should include:

– Replacement of air filters
When you have properly organized your maintenance schedule you know you have to replace filters every few months. Filters help keep your indoor air running clean and keep allergens away from the high traffic areas of your workplace.

– Inspect HVAC units for leaks
Leaks become costly if ignored over time. Inspecting your heating and cooling unit periodically is a good way to determine if parts are leaking,  Catching a leak early on will pay dividends on your utility energy costs.

– Cleaning air cooled condensers
Dust that settles on your equipment could hinder how it operates. Taking the time to regularly clean your condensers assures that your units will not become contaminated and in turn your airway remains clean.

– Checking safety controls.
Are all the dials, switches and digital panels displaying the correct readings, set on the correct calibration settings.   All these items affect your energy use efficiency directly and have the most impact on energy utility costs.

– Check belts
Similar to your car’s V-belt you need to inspect belts regularly for signs of wear, Replace if needed.

Commercial Heat Pump Systems

Commercial Heat Pump Systems

commercial heating service in Saint LouisAmerican Services commercial heating and cooling installation service knows that business owners in geographic areas with moderate heating and cooling needs, are turning to heat pumps as an energy efficient alternative to furnaces and air conditioning.

Heat pumps use electricity to move heat from a cool space into a warm space, making the cool space cooler and the warm space warmer just like your refrigerator. During the heating season the pump moves heat from the cool outdoors into your warm house, during the cooling season heat pumps move heat from your cool house into the warm outdoors.

Because they move heat rather than generate heat, pumps can provide up to four times the amount of energy they consume. Many commercial  customers are choosing this option because of  energy savings.

The most common type of heat pump is the air-source heat pump, this transfers heat between the buildings and the outside air. If you’re heating with electricity a heat pump can trim the amount of energy you use for heating by as much as 30-40 percent. High-efficiency heat pumps can also  dehumidify better than standard central AC  which results in less energy usage and more cooling comfort in the summer months.

One drawback is that the efficiency of most air source heat pumps when used as a heat source drops dramatically at low outside temperatures. Most generally this makes “air source” heat pumps unsuitable for colder climates, but new technology is currently breaking ground to overcome the problem.

To learn more about new commercial heating systems in Illinois or Missouri, contact your local Missouri heating professional, American Services, located in St. Louis MO today, you won’t be disappointed!

 

 

 

Chilled Water Cooling Systems

Chilled Water Cooling Systems

commercial cooling systems in ILAmerican Services heating and cooling installation in Webster Groves knows that chilled water cooling systems are found mainly in larger commercial buildings.  Features that separate central chillers and air handlers include a network of pipes and pumps that connect all five major water cooled chiller system components.

Today only 18 percent of all US commercial building floor space is cooled by water cooled chiller systems. Currently around 39 percent of all buildings larger than “100,000ft2” contain typical water cooled chiller systems.

Standard water cooled chiller systems contain five components including; the air handling unit cooling coil, the chilled water pump, the chiller unit, cooling tower fan and the condenser water pump.  A large matrix of pipes, pumps and connections tie this water cooled chiller system together.

In layman’s terms the typical water cooled chiller system operates by the air handling unit cooling coil that operates to trap building heat. The coolant/heat is routed to the chilled water pump which pumps to the chiller unit, the chiller unit then directs the flow water to the cooling tower fan. At this point the heat is expelled through the cooling tower fan cycling the cooling water  then recycled to the condenser water pump where the water cooled chiller system  begins all over again.

Chillers use one of four types of compressors: reciprocating, scroll, screw, and centrifugal. Design engineers have determined reciprocating chillers are the least efficient. Screw and scroll compressors are normally used in applications demanding up to 300 tons of cooling capacity.   Centrifugal compressors are normally utilized in large building installations. A new type of centrifugal compressor design that employs magnetic bearing science is breaking the mold that serves the under-300 ton market.

Currently there are no federal minimum efficiency standards governing chillers, though the American Society of Heating Refrigeration and Air Conditioning Engineers does provide efficiency specs.

 

Four Common Cooling System Problems

Four Common Cooling System Problems

new cooling systems in IL American Services commercial cooling installation in Saint Louis knows that detailed planning long before you have a new cooling system installed will help with installation costs, and prevention of many of the “whatever can go wrong will go wrong” principle.

The rule here is that new installations don’t always go according to plan, so a little pre-calculating goes a long way. Most often maintenance staff can assume that once a new cooling system is installed it will function flawlessly forever. Unfortunately cooling systems are complicated machines and they malfunction sometimes.

Here are 4 common cooling system problems that occur frequently and their solutions. A preventative maintenance checks and services schedule should be implemented and scheduled on a daily, weekly, and monthly basis. This maintenance plan will promote both immediate energy savings and long range commercial cooling systems life span.

Refrigerant Leaks: Air conditioning units don’t use up refrigerant the way your car uses up gas. Rather the refrigerant cycles through the system and is used over and over again. If your refrigerant level is low it was either charged improperly during installation or there is a leak present. Adding refrigerant without fixing the leak will get very expensive very quickly. Consult a certified technician immediately to fix the leak and recharge the cooling system correctly.

Electronic Control Failure: Without fail most controls for the fan and compressors will wear out over time due to normal use and abuse. Corrosion of wire, terminals and other electrical components can lead to electrical control failure. All electrical contacts and connections should be inspected regularly according to your scheduled preventive maintenance checks and services
(PMCS) by a certified electrician.

Sensor Malfunctions: Thermostats are designed to read temperatures of the air to determine when the cooling system should activate or deactivate. When the cooling systems sensor develops a malfunction, the cooling unit could operate continually or erratically. Generally the fix is questionable- bending the wire that holds the sensor in place gently so it’s near the evaporator coil but not touching it-though most maintenance personnel prefer to leave this operation to a certified HVAC technician such as offered by American Services.

Drainage Problems: When left unattended or preventative maintenance is not being conducted in commercial cooling system installations, a disregarded drain clog could cause enormous water damage. Electronics and their components (computers, electric tools, and circuit breaker boxes) do not do well submerged in water. Once again a PMCS check would have prevented the clog line.  Clearing out the condenser drain line and applying an algaecide treatment during every inspection can prevent drainage problems from developing in the future.

Commercial Cooling System Erosion

Commercial Cooling System Erosion

cooling installation in MOAmerican Services cooling system installation in Chesterfield know that experts in the cooling system industry estimate that about 40 percent of down time is caused by cooling system maintenance problems. Researching and Understanding the common problems and implementing proven preventive maintenance practices will significantly reduce your operating cost. The four major problems associated with commercial cooling system breakdown and malfunctions are:

– Corrosion
– Cavitation-erosion
– Scale deposits
– Green-goo or drop-out
Corrosion what is it? Corrosion is the natural tendency of metals to revert back to their ore form; an example is cast iron oxides which will form reddish brown (commonly known as rust) deposits on engine services.

Similarly other metals form oxides. The color of the various corrosion events can vary from white to black depending on the specific oxide that has formed.

There are a variety of conditions in a cooling system environment which will affect the degree and rate at which metal surfaces corrode. Because these conditions are “generally present in all commercial cooling systems” this enables certified cooling system technicians such as those at American Services, to routinely perform preventative maintenance operations on many systems. These conditions include coolant Ph., which is simply the concentration of dissolved oxygen and carbon dioxide in a coolant, metal surface deposits, metal stress, coolant temperature, and acids formed in a combustion process of the fuel and the corrosion inhibitors present. To one degree or another of these conditions are present in “almost all commercial cooling systems,” once maintenance staff understand this, cooling system malfunctions like corrosion can be detected easily and early enough to prevent serious deterioration.

Under certain conditions all metals in the cooling system will corrode. Metallurgy science proves some metals are more sensitive than others, when metals corrode they weaken as a result, components fail. Aluminum is the metal most prone to corrosion in a cooling system environment, others include cast iron, solder, steel copper and brass to a somewhat a lesser degree will also corrode.

To reduce corrosion in your commercial cooling system a good corrosion inhibitor is a must.

Corrosion inhibitors should contain the following critical components
-pH buffer this will help maintain optimum coolant pH levels
-Silicate is the best known corrosion inhibitor for aluminum services
-TT and MBT Chemical inhibitors for protection of copper and brass
surfaces
– Phosphate, Borate and Nitrate, the best corrosion inhibitor for iron, steel and aluminum.

These corrosive inhibitors are the simplest solution to corrosion problems.

 

Tips for the Efficient Maintenance of your Commercial Range

Tips for the Efficient Maintenance of your Commercial Range

restaurant equipment installation in MOAmerican Service commercial restaurant equipment repair in Sunset Hills is committed to helping restaurant owners learn proper maintenance on new and used restaurant equipment.

Selecting the proper cookware includes much consideration.  Optimum heat transfer is the objective here.  Flat heavy bottomed cookware promotes heat transfer well; uneven bottom cookware cannot accomplish this. Most professional chefs prefer copper bottom pots as they are especially good heat conductors.

It’s important to match pan and burner sizes, the pan should fully cover the burner for effective heat transfer. An example is if you use a 6 inch pan on an 8 inch burner almost half of the energy produced by the commercial range will go up the hood and heat up kitchen. Another way to boost efficiency and shorten cook times is to cover pots and pans, lids help hold in the heat.

In order for your commercial range to operate efficiently using the least amount of energy a regular maintenance plan must be incorporated.

A thorough and detailed cleaning of your commercial stove top will improve heat transfer. Dirty and black and burner pans have to work a lot harder to reflect heat. A clean commercial stove top is an energy efficient stovetop.

Knowing flame color and shape will help you determine when time for an adjustment is, for instance when your flame turns more yellow than blue or loses its bullet shaped appearance it’s time for a calibration. Merely loosen the adjustment screw, move the shutter until once again you have a blue bullet shaped flame. Close monitoring of your gas fired commercial range will result in energy cost savings.

Perform daily cleaning by removing grease and cooked on food build up, do not drown your commercial range, excess water damages electrical components.

Occasionally burner ports will become clogged. In order to clean them:
– Remove burner cap from the burner base
– Clean burner cap with warm soapy water
– Clean gas tube opening with damp cloth to clean area
– Use a straight pin to clean the tube port opening using care not to enlarge or distort the port.

Saving energy dollars begins with using the right equipment. Learn which energy smart features you can add to your commercial range.

A Commercial range with more BTU’s  will not necessarily allow you to grill any faster, since sometimes the range emits more than the food can absorb and the rest goes up the hood. These extra BTU’s can be helpful if you need a burst of power while cooking, such as searing operations.

Tips for buying Used Commercial Deep Fryers

Tips for buying Used Commercial Deep Fryers

commercial restaurant equipment repair in MOAmerican Services restaurant equipment installation and repair in St. Louis knows that if you are looking for ways to save on equipment costs for your restaurant, used commercial deep fryers can be found for relatively little investment, but considering used fryers aren’t as efficient as new ones, you may opt to invest in a new model.

If your decision is to purchase a used model be sure to have a certified technician check out the unit beforehand to ensure there is not a leaky vat.

Purchasing Tips
-Prior to purchasing your used commercial fryer, be sure to do your homework and thoroughly inspect the machine to make sure you’re not inheriting something that will cost more in repairs than a whole new fryer might cost.

– Inspect the commercial fryer
Purchasing online is very convenient but for used restaurant equipment you’re better off going to a dealer or a restaurant equipment auction and inspecting the unit yourself. Be sure to check the fry vat for leaks with water if possible.

– Go with gas, gas fryers have fewer moving parts or complex components than electrical units, so they are simpler and less is likely to need repairs.

– Stay away from computer controls.  Computerized controls on your fryer could make life easier but there are a lot of complicated gizmos and sensors that can wear out and are expensive to replace.  Most restaurant owners recommend using a manual gas valve model when looking for used commercial deep fryer.

– Call the manufacture with any questions.  During your inspection if you see something wrong with the unit or don’t think everything is up to snuff, don’t be afraid to give the manufacture a call. The manufacturer will be able to tell you what is potentially wrong and how much repairs may cost.

Factor this information into your purchasing decision so what it comes down to; is it safe to buy a used commercial deep fryer? As long as you stay away from the computer controls and go with a gas powered model.

Questions to ask HVAC Contactors Part II

Questions to ask HVAC Contactors Part II

Commercial HVAC Service in ILQuestions to ask HVAC contractors Continued;

5. Does the company have a physical address?  Many fly-by-night heating and cooling companies and uninsured moon lighters rarely have a business address. On the other hand, most stable HVAC companies operate from an office or shop facility, not out of a home office.

6. What is the standard company and manufacturer guarantee?  Not only will a better guarantee give you a longer peace of mind, better guarantees are usually offered by better companies

7. Does the company offer financing?  Even though you may not need financing, you should still look for companies that offer financing because it shows their concern for affordability and whether the company can meet the financial qualifications necessary to offer financing.

8. Does your company perform Manual J design calculations?  Good companies perform engineering calculations based on the Air Conditioning Contractors of America (ACCA)”Manuel J” to insure the equipment they provide is the right size. (Over sizing an HVAC system is just as bad as under sizing one). Improperly sizing HVAC systems are all too common.

9. Does the company follow proper matching of components?
When you are replacing an air conditioner or heat pump or other major components it is important to replace both the outdoor unit as well as indoor components together as a matched set, if not matched you get a reduced efficiency and increased breakdowns. Good contractors insist on properly matching to insure maximum efficiency is achieved.

10. Does the company offer you choices?  With today’s technology there’s a wide variety of options available for heating cooling and ventilation systems. Reputable companies will present you with choices in product efficiency, features, filtration, controls, and financing, as well as custom HVAC design and implementation.

11. Does the company provide customer testimonials?  Professional HVAC contractors such as American Services HVAC repair in St. Louis, should be able to willing to readily supply any number of past customer testimonials.

 

Questions to ask HVAC Contactors Part I

Questions to ask HVAC Contactors Part I

Commercial HVAC Installation in MOAmerican Services HVAC installation in Wentzville knows there are many HVAC contractors operating out there today-some certified, some not. Installing a commercial HVAC system is an expensive undertaking and it won’t due to hire a non-certified mechanic.  Be sure to educate yourself about the installation and all the components associated with the HVAC system. It will prepare you to ask smart questions and find the best contractor suited for your installation.

1. Does the company hold a heating and air conditioning license?
State licensing is the minimum requirement to operate a heating and air conditioning company. Licensing protects the public, and your business. Unlicensed companies which are operating out there with no restrictions are unaccountable to regulators and often unavailable if things go wrong. Ask for a “license number”! It is the first step indicating you’re dealing with a reputable company.

2. Does the company employ NATE certified technicians?  NATE stands for the North American Technician Excellence Program. It represents the heating and air conditioning industry certification body for technical knowledge. NATE certified technicians are the best trained and highest quality service installation providers in the industry today.

3. Is the company insured? General liability insurance protects you. Most companies will be insured but not all are, Don’t Take the Risk! Ask about insurance, companies that do not carry these two fundamental insurance policies are a danger to do business with.

4. How long has the company been in business (under the same name)?
On average 1 in every 5 heating and cooling companies goes out of business every year. The best way to predict whether a company will be around long enough to honor its warranty promise to you is whether the company has a long history. Most reputable companies are more than willing to report their business tenure.