In the last 10 years, the manufacturers research and design efforts have led to the discovery of new technologies and new products that can provide various levels of comfort and security with-in and outside your home.

Not only do we stand behind our work, but we also want to service and maintain it so you can be assured your system is running at the optimum performance and efficiency year after year. An overview of these products and technologies has been outlined below.

For more information, please give us a call 936 588-4455


Our Commercial A/C Heating experience includes the following:

Roof Top Units, Self Contained Units, Wall Mount Units, up to 25 tons. Metal Fabrication or any other commercial AC and Heating needs. We also do WallPacks, whether your needs are new installation or maintenance on an existing system. Give us a call, we can do the job for you.

About Us


Both Residential & Commercial

Heat and Air
Heating System Installation
Heat System Repair
Heating System Tune-Up
Air Conditioning Installation
Air Conditioning Repair
Air Conditioning Tune-Up
Home Energy Analysis
Air Cleaners
Wall Packs
Roof Top Units
Self Contained Units
Wall Mount Units
Metal Fabrication


The HVAC industry can be a maze of unfamiliar acronyms and industry terms. This dictionary will help you navigate the most common terms you’ll come across during your buying decision.



AC Alternating Current - A type of current where the polarity is perpetually reversing, causing the directional flow in a circuit to reverse at regular intervals.

ACCA - Air Conditioning Contractors of America.

Acoustical - Relating to sound, the science of sound, or a sense of hearing.

AFUE - Annual Fuel Utilization Efficiency. A measurement used to rate furnace efficiencies by dividing the ratio of heat output by heat input.

AGA - American Gas Association, Inc.

Air Conditioner - A device that changes humidity levels, temperature or quality of air. 

Air Flow Volume - Measured in cubic feet per minute (cfm), this is the amount of air circulated in a space.

Air Handler - Parts of a system including the fan-blower, filter and housing.

ARI - Air Conditioning and Refrigeration Institute.

ASHRAE - American Society of Heating, Refrigeration and Air Conditioning Engineers.



BTU - British Thermal Unit. Measures the amount of heat required to raise or lower the temperature of one pound of water one degree Fahrenheit.

BTUh - British Thermal Units per hour.

Burner - The device that facilitates the combustion of air and gas.

Burner Orifice - The opening in the burner through which the gas or fuel passes prior to combustion.



Capacity - HVAC capacity is the output produced by the heating or cooling unit and is measured in BTUs per hour.

Celsius - A temperature scale that registers the freezing point of water as 0° and the boiling point as 100° under normal atmospheric pressure.

Central Air Conditioning - Central air conditioning helps keep your home cool and reduces humidity levels. By transferring heat from air located inside your home to the outside, conditioned and cooled air is left to be re-circulated. Using electricity as its power source, the compressor inside an air conditioning unit pumps coolant, or refrigerant, back and forth to gather heat and moisture from indoors. Warm air from inside is blown over the cooling coil, which is connected to the compressor, and then pumped back into your home.

CFM - Cubic Feet per Minute. A measurement of airflow volume.

Charging a System - Adding coolant, or refrigerant, to an HVAC system.

Compressor - A pump that increases the pressure of gas.

Condensate - Vapor that is turned into a liquid as its temperature is lowered.

Condenser Coil - Also an outdoor coil. A device that removes heat from the refrigerant, allowing the refrigerant to be converted from vapor to liquid.

Condenser Fan - A fan that passes air over the condenser coil to facilitate the removal of heat from the refrigerant.

CSA - Canadian Standards Association.



DC - Direct Current. A type of electrical current that only flows in one direction.

Damper - Found at the exit point of ductwork, this plate usually contains grates that can be opened or closed to control the flow of air into a zone.

Degree-Day - Calculated by subtracting the average outdoor temperature for an area from 65º Fahrenheit. This measurement is used to estimate the amount of heating or cooling a home or building will need.

Dehumidifier - A device that removes humidity, or moisture, from the air.

Diffuser - A grille over an air supply duct with vanes that distribute the discharging air in a specific pattern or direction.

DOE - Department of Energy.

Downflow Furnace - A furnace with an intake on the top and an air discharge at the bottom.

Drain Pan - Also a condensate pan. As the refrigerant vapor is liquefied, the drain pan collects the condensate and funnels it to the drain line.

Dry Bulb Temperature - The temperature as measured without the consideration of humidity.

Ductwork - A network of metal, fiberboard or flexible material flowing throughout a space which delivers air from an HVAC unit to the respective zones of a home or office.



EER - Energy Efficiency Ratio.

EPA - Environmental Protection Agency.

Expansion Valve - A valve that meters the levels of refrigerant through a temperature or pressure control.

Evaporator Coil - Also an indoor coil. A device that is designed to absorb heat in the air in order to change the liquid refrigerant that flows through it into a vapor.



Fahrenheit - A temperature scale in which water freezes at 32 degrees and boils at 212 degrees at normal atmospheric pressure.

Fan - A device that creates air flow.

Filter - A device that acts like a strainer to remove dirt or undesired particles.

Flue - A vent that removes the byproducts of combustion from a furnace.

Furnace - The major component in heating a home. A device that facilitates the combustion of fuel and air to create heat.

Fuse - A delicate metal strip connecting two parts of an electrical circuit. This strip breaks, or melts, in the event of excess electrical charge, breaking the electrical circuit.



GAMA - Gas Appliance Manufacturers Association.



Heat Exchanger - A device through which heat is transferred to a cold area or surface.

Heat Gain - The amount of heat added or created in a designated area.

Heating Coil - A coil that acts as a heat source for a heating system.

Heat Loss - The amount of heat subtracted from a designated area.

Heat Pump - A device used for either the heating or cooling of a space by transferring heat between two reservoirs.

Heat Transfer - Moving heat from one location to another.

HSPF - Heating Seasonal Performance Factor. This factor rates the efficiency of the heating portion of the heat pump.

Humidifier - A device that adds humidity, or moisture, to the air.

Humidistat - The device that measures humidity and turns the humidifier on and off.

Humidity - Dampness in the air caused by water vapor.

HVAC - Heating, Ventilation and Air Conditioning.



Ignition - Elevating the temperature of a substance to the point of causing a combustion reaction.



Kilowatt (kW) - 1,000 watts.



Latent Heat - A type of heat that when added to an area produces an effect other than an increase in temperature.



Media - The fine material of a filter that traps dirt, dust, mildew or bacteria.



NEC - National Energy Council / National Electric Code.

NEMA - National Electrical Manufacturing Association.



Orifice - An opening or hole.



Package Unit - A heating and cooling system contained in one outdoor unit.

PSI - Pounds per square inch.

PSIA - Pounds per square inch, absolute.

PSIG - Pounds per square inch gauge.

PVC - Polyvinyl chloride; a type of plastic.



Reciprocating Compressor - A type of compressor used in cooling systems to compress refrigerant by using a piston action.

Refrigerant - A chemical that condenses from a vapor to liquid and, in the process, decreases in temperature.

Refrigerant Charge - The amount of refrigerant in a system.



SEER - Seasonal Energy Efficiency Ratio. A rating system developed by the U.S. Government to indicate the efficiency level of cooling equipment.

Self-contained System - A package unit.

Sensible Heat - Heat added or subtracted that causes a change in temperature.

Sensor - A device that reacts to a change in conditions.

Split System - An outdoor unit combined with an indoor unit.



Thermostat - Sensors that monitor and control the output of an HVAC system.

Thermostatic Expansion Valve - A device that creates a constant evaporator temperature.

Ton - One ton is 12,000 BTUs per hour.



Upflow Furnace - A furnace that pulls in air from the bottom and releases it through the top.



Vacuum - A space where the pressure is significantly below that of standard atmospheric pressure.

Volt - A unit of electro-motive force.

Voltage - The force pushing electrical current along wires and cables.



Watt - The unit of electrical power equal to the flow of one amp at a potential difference of one volt.

Wet Bulb Thermometer - A thermometer that measures the relative humidity in the air.



Zoning - A system that divides a home, office or space into different regions in order to better control the temperature and effectiveness of a heating and cooling system.

Trouble Shooting

A/C is Not Cooling:

  1. Is the thermostat in the Cooling Position?

  2. Is the temperature set lower than room temperature?

  3. Is air coming out of the vents? (if Yes) Check the A/C unit outside to see if it is running, if it is not, check the power switch in the attic to see if it is turned off. Often times maintenance people working in the attic will mistakenly turn off the A/C power switch thinking its the "light switch"...This happens a lot!!

  4. If the outdoor unit is running, but not cooling inside you must call your service technician.

  5. If the outdoor unit is not running, check you're A/C breaker at the electrical panel and reset breaker if necessary.

  6. If the unit comes on after resetting breaker and starts cooling, you have been successful. If breaker trips again, you must call your service technician.

Not Heating:

  1. Is the thermostat in Heating Position?

  2. Is temperature set higher than room temperature?

  3. Is there any air coming out of the vents? If yes, call your technician. If no, go into the attic and check the power switch. Often the power switch in the attic is mistaken for the "light switch" and turned off by mistake.

Year Round Preventative Maintenance


  1. If you are using regular fiberglass filters, you should replace them every 30 days.
  2. Before purchasing expensive filters, such as electrostatic or pleated filters, consult you're A/C technician. This is important because many times A/C systems are not designed to operate with these very restrictive filters. This can cause the system to run much cooler temperatures than they are designed to operate causing compressor failures. It will also cause the system not to cool properly and run for long periods of time without cycling.

Spring A/C Check:

It is recommended that the A/C system be checked by a service technician in the spring before heavy usage. This will assure that your system will be running efficiently. The technician will check for proper drainage (a stopped up drain plug can cause a lot of damage in your attic) by placing algae tablets and blowing out the drain line. The technician will also check the refrigerant levels, clean the condenser coils, oil the fan motor and check many other important components to assure top performance from your A/C system. These steps will prevent possible water damage and expensive A/C repairs.

Fall Furnace Check:

It is recommended that the furnace be checked in the fall before heavy usage. The technician will check all the safety devices. He will also be checking for carbon monoxide entering into the air stream, gas leaks and any other dangerous gases. This will insure the system is operating at peek performance and operating safely.

We hope these tips will help and if we can be of further assistants, give us a call. We'll be more than happy to answer your questions.

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