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F.A.Q.
Why does the A/C smell like smoke when I turn the heater on?
Whatever particles your filter does not catch goes through your entire HVAC system and ductwork. These particles can accumulate on your heater, which burns off when your heat turns on. It is good practice to test your heat a few times per year. This will help the components of the heating system and prevent a large build up on the heater.
Are there any air conditioning systems that are safe for the environment?
Yes. Several manufactures have developed new systems that contain the environmentally friendly R410A, or Puron, refrigerant. Visit our products page to view our entire line of Puron products
My temp is set at 65 why can't my house get that cold?
A/C systems are designed to maintain an indoor temperature of 74-75 with an outdoor temperature of 91. If your system is not maintaining up to these standards you need to have a professional look at your system.
How often should I replace my filters?
For optimum efficiency and filtration, we recommend that you replace your disposable filters at least once a month. If you have washable filters, they should be cleaned once a month.
What is a Capacitor ?
A capacitor is an electronic device for accumulating and holding a charge of electricity.
What does Clean Air Delivery Rate (CADR) mean?
Clean Air Delivery Rate / CADR provides the number of cubic feet of clean air a unit delivers each minute. A higher CADR means a greater amount of clean air is being delivered to your home.
Why do we have a water leak?
Your A/C unit must be maintained regularly and properly, making sure the filters are clean, and the drains are flushed out properly. Also, there may be too much freon or not enough.
What temperature should my thermostat be set for?
If your system has been designed properly, you should set the thermostat anywhere from 76 degrees to 82 degrees is common. During the winter season, settings typically range between 66 degrees to 74.
How often should the air conditioning system be serviced?
Dependant upon the age of the system, you may want to have each system serviced twice a year. Most manufacturers recommend a maintenance be performed twice a year on their HVAC equipment. We recommend contacting us directly so we can schedule a time to come and maintance your unit.
What is a SEER?
Seasonal Energy Efficiency Rating. Above and beyond that, it is basically the rating the government set so each unit manufacturer would rate all units equally, therefore giving the consumer an accurate sense of what they are purchasing. SEER is the number of BTU’s per watt. The more BTU’s per watt, the less it will cost you to run the system.
How often should I change my filter?
Monthly, during high usage periods, and every two months during lighter usage months. Once again, the filter must be changed when it is dirty, and begins to markedly restrict the airflow. Comfort Zone Heating & cooling commonly recommends to our clients to change the filter at the first of each month.
How does Duct Cleaning work?
Your air conditioning and heating unit supplies air through ductwork and registers. These registers are removed, cleaned and sanitized.. The entire system is treated with an EPA approved and registered anti-microbials which kill and stop further growth of odor and allergy causing mold, mildew & bacteria for two full years!
Do you provide 24-hour service?
Absolutely! Our emergency service works every day of the year as well. We are open 24/7 365 days a year !!
Is annual maintenance necessary?
Yes! In our area, heating systems work hard. When anything is operating virtually non-stop for months on end, it needs regular maintenance—just like your car. Without the regular maintenance of a tune-up, you lose efficiency and money. Annual tune-ups keep your system working at peak efficiency and give our technicians a chance to catch minor problems and signs of wear before they turn into major trouble down the road. An annual tune-up also protects your family by helping prevent carbon monoxide poisoning. In addition, regular maintenance can extend the life of your equipment.
What should I do if my heating system doesn’t work?
Before you call or e-mail us, go through the troubleshooting steps below to make sure a service call is really needed. It will save you the cost and inconvenience of an unnecessary service visit. * Make sure the thermostat is set above room temperature or in the “heat” position. If it’s a digital thermostat and the display screen is blank, you either need new batteries or the power supply has been interrupted. * Check for a tripped circuit breaker or a blown fuse. * Look to see if the power switch for your heating system is turned on. Sometimes, these get turned off accidentally. * Check your tank to see if you have heating fuel. * If you have an oil heating system, press the reset button on the burner relay—ONCE ONLY. If your system doesn’t start after you push the reset button the first time, do not push it again. Pushing this button more than once can cause your heating system to “flood.” Too much oil will get pumped into the combustion chamber, resulting in a lengthy and costly repair. If at this point you still don’t get heat, call Comfort Zone Heating & Cooling . When a service technician arrives, let him know everything you did to the system before he begins working on it. You should also let him know if anything out of the ordinary happened, like an unusual noise, a strange smell or smoke. In many cases, this will help the technician find the problem—and get your heat back on again—faster.
How often should I have my heating and air conditioning, serviced?
The service on a heating and air conditioning system should be at least Twice a year Below are some tips we recommend to support comfort and long life for your system. · Keep the area around your outdoor system free of grass trimmings. This effort will help dirt and debris from interfering with the flow of air. · Don’t cover grilles and duct work with furniture. You take away your system’s ability to deliver air to keep your home comfortable. · During the summer months, keeping drapes or blinds closed in the afternoon will maintain cooler temperatures. · Run other major appliances in the evening. · Refraining from using your oven while running your air conditioner. · Don’t overrun an exhaust fan. This will pull the air conditioning out of your home. · Constant air flow helps so keep those fans running while using your air conditioner. · Using a programmable thermostat allows you cool your home only when you need it. · Different settings in various rooms will help keep everyone comfortable. · Different settings in various rooms will help keep everyone comfortable. If you spend most of your time in a portion of your home, zoning can help you to save money on your utility bills. · Using a ventilator for your attic will help pull the hot air out of your home in the summer time. · Set your thermostat at 85 degrees when going on vacation or leaving your home for a long period of time. You want to keep that air circulating to prevent high temperatures and humidity from causing damage to your home and even your health. Mold and fungus can begin to form in kitchens, bathrooms, on furniture and even in your duct system.
How do I check for a dirty evaporator coil?
Probably the easiest way is to measure the temperature of the air entering the system at the filter then measuring the temperature at the closest register. A good system will show a 20-25 F degree difference in temperature. A restricted airflow will have a higher differential. This is a subjective decision. If the house does not cool properly after a technician adds Freon to the system, and the house has balanced airflow to the rooms, then I would clean the evaporator coil. Many things cause a system to stop cooling properly, but dirt is the most common problem. Many technicians will attempt to add Freon when the coils are dirty. This is because they do not want to clean the coils.
How do you size the airconditioning for the house?
Using an ARI manual J. This allows you to see the needs as to the direction of the doors and windows. It shows different load needs for a different orientation of the home. The calculations are the same for the north as for the southern states with one exception. The sun states should be calculated using 105F degrees as the ambient temperature. The manual is straightforward and easy to use if time is spent reading the directions. Consider it an investment in future energy savings. Any salesman that guesses should be run off the job. The process only takes about 1 hour for a novice who read the instructions and even less for someone that regularly does the calculations. Using blueprints can make the calculations very accurate.
How do I identify limit switches?
In the air handler/heater section of the furnace several limit switches help protect against accidental operation of the system. Depending on the type of system, a limit switch is installed to guarantee forced purge occurs before allowing the gas valve to open. A switch is present to insure the air is hot enough for the fan to turn on. Another switch is for the high temperature limit. Some systems will have a low and working temperature limit switch for operating the furnace. A switch on the filter door will be found on newer units. Many heat related switches are eye shaped with a raised circle in the center of the eye. The fan switch can also be a heat controlled switch. The box or mounting area will usually have a temerature guage that is settable. Momentary connection switches are used to keep panels in place.
What is a heatpump?
A heatpump is a HVAC compressor that cools outside and heats inside. The unit has a reversing valve that changes the direction of the freon flow. It is cheaper to operate than a resistive heating circuit alone. It will work efficiently until the temperature drops below 38 degrees. When the temperaturee drops below the magic number, the restive heat is more effective. In theory the heatpump will work at 32 degrees, but the heat produced is very little.
The air conditioning is running but is not cooling/heating?
Many reasons, the simplest being that you may have inadvertently set it to fan only operation. Unfortunately it may also indicate a serious fault, Check your operating instructions but if no luck, give us a call and we will get you help right away.
What are the advantages of a programmable thermostat?
Different programmable thermostats offer many different features. However, because they are electronic, they are all more accurate and efficient than thermostats that contain mercury. With programmable thermostats you can control the temperature in your home at different times of day without ever touching your thermostat. Because everything is automatic, you will never forget to change the setting on your own.
How do I know if my A/C unit is big enough or not ?
Before purchasing a replacement system you should always make sure your system is sized properly. Our representative will provide a heat load calculation to determine the proper size and make the appropriate recommendation. Remember, bigger is not always better.
How does the air conditioning cycle work?
The cycle beings when the fan moves air through the heating chamber and/or cooling coil into ductwork leading it to the openings in the room. These openings are called outlets or terminals. The air is directed from the ductwork through these outlets and into the room where the air either heats or cools the room as needed. Dust particles in the room enter the air stream and are carried along with it. The air then flows from the room through a reutn outlet. Dust particles are removed from the air by a filter installed in the return ductwork. After the air is cleaned it returns to the fan and the cycle is completed. If cooling is required, the air passes over the surface of a cooling coil. If heat is required, the air passes through a combustion chamber or over the surface of a heating coil.
Your Header
This comes from when people bought ice from the ice man and put it into an ice box. When air conditioning was invented it was compared to the cooling capacity of a ton of ice, so that generation would relate to how much work the equipment could do.
My AC condenser is close to a dryer vent. Is this a problem?
Yes. Lint material can (and does) cling to the outside fins of the condenser. This will cause the equipment to lose efficiency and possibly fail. 
Should I repair my own air conditioner?
No! Today’s cooling systems are much more complicated than they once were, and without proper training you could cause serious damage to your unit. Federal regulations also require proper disposal of refrigerants. The best course of action is to call an EPA-certified technician at the first sign of trouble. 
What is B.T.U.?
British Thermal Unit. The amount of energy needed to heat one pound of water one degree Fahrenheit
How much would it cost to have duct work and vents installed in 2 rooms?
It depends upon the amount of work involved and the cost of doing business in your neighborhood.This is a time and materials job. Way too many factors to even give a guess. Is the home a ranch or two-story? On a slab? Unfinished basement? Finished basement? Are the rooms in question upstairs or down? Are the steel joists supporting the house? Is the house drywalled or plastered? Are the interior walls some special material, like brick or stone? How far from the furnace? How far from the nearest existing duct runs? Are the floors tiled, carpeted or hardwood?
Does it cost more to heat or cool a home?
Generally speaking, it costs more to cool a home than it does to heat a home. This applies to both an air conditioner and a heat pump that is being used to cool the home during the warmer months.
Why do air conditioners need filters?
The idea behind a filter is to keep dirt and debris from flowing through your ductwork. Disposable filters work just fine. Be sure to check them every two weeks during peak usage. Clogged filters will cause your system to run inefficiently and increase your energy bills.
Which is better, a less expensive model or a higher efficiency one?
If you need to replace an old inefficient air conditioning unit, it is better to look for a high efficiency one. You will pay a little more for this unit, but it could save you up to 50% on your cooling costs. This is money you will recoup over the years. However, it is not ALWAYS the most beneficial choice. Talk with your contractor and get the unit that will be the best fit for you, your needs, and your climate.
What does Amperage mean ?
Refers to the amount of electrical energy or current flowing through an appliance at any given time. This figure normally ranges from 5 to 15 amperes on regular air conditioners and 12 to 15 amperes on industrial size units. A dedicated electrical line is needed if the unit’s amps exceed 15 amperes, as the standard circuit in a room is rated at 15 amperes.
Where are filters usually located ?
Filters are suppose to be located within the return air duct.
What are two important fuctions that the condenser serves?
* It removes the heat picked up by the refrigerant in the cooling coil (Evaporator) * It condenses the refrigerant vapor to a liquid.
What does zone mean in air conditioning?
In air conditioning, a zone is an area in a building that is set apart from other areas, usually by paritioning.
What does Zoning mean ?
This system controls the temperature of each individual room. Each zoned area has its own thermostat, which allows the system to send hot or cold air to just the rooms that need it. A conventional system with only one thermostat works well for one room, but it is not able to determine the temperatures in the other rooms in your home. Zoning allows for uniform temperature throughout your home and will eliminate hotter or colder rooms. This type of system will also help you save up to 25% on energy costs.
How can you loose heat?
A portion of the heat within a building is lost through open doors, by conduction, and by filtration through cracks around windows and doors. Heat loss also occurs because heat is required to increase the temperature of the air used for ventilation.
What is a return outlet opening ?
A return outlet opening is a wall, ceiling, or floor opening through which room air is either exhausted to the outdoors or returned to the fan housing.
What is a grille?
The grille is a covering for any opening through which air passes.
What is a register?
A register is a grille fitted with a damper to control the quantity of air passing throught it.
What is humidity measured in?
Humidity is measured iin tons of moisture.
What does Radiation depend on for heat transfer?
Radiation depends on heat rays for heat tranfer.
How does supply outlets work?
Supply outlets help to distribute the air evenly in a room. Some outlets fan the air and other outlets direct the air in a jetstream. Still other outlets combine these actions. As a result of these actions, the outlets are able to exert some control on the directions of the air delivered by the fan. This directional control plus the location and the number of outlets in the room contribute greatly to the comfort or discomfort resulting from the air to the pattern.
What does bypass air mean?
Bypass air is the air that flows through a coil without making contact with the coil surface. The amount of bypass air depends basically on the construction of the coil and the velocity of the air flow. If the coil tubing has one fin per inch, more air bypasses the coil surface than if the tubing has seven fins per inch. if the velocity of the air passing over the coil surface is low, more of the air contacts the coil surface than it does when its velocity is high.
What is another word for cooling & dehumidifying line?
The cooling and dehumidifying line is also called the sensible heat factor line.
What is a Split System ?
Split systems are where the compressor and outdoor heat exchanger are located outside, some distance from the indoor air-handling unit. They are joined together by refrigerant lines.
My air conditioner won’t come on !
The first thing to check is making sure you’re getting power to your air conditioner. If you have a split system where the air conditioners compressor and a condenser or the unit usually on the ground on the side of your house near the garage door, and the Air Handler (the part of the Air conditioner usually in its own closet or other out of the way area) and they both need power. There is usually an electrical box on the wall of your house with a switch and or fuse in it for the compressor and then you’ll want to check the circuit breaker for the A/C breaker inside your house and make sure it’s on. If the power is on then you’ll want to look for wires that may have come loose (make sure the power is off to the A/C if you’re going to adjust connections involving wiring. If this is not the problem then you need to check the Thermostat to make sure it’s working.
How can I tell if my air conditioners refrigerant is low?
You’ll notice icing on pipes and your system will be working too hard or not at all. Too much or too little refrigerant will make your system less efficient increasing energy costs and reducing the life of the equipment.
Why is there ice on my Air Conditioning pipes?
Ice on pipes is a sign of not enough refrigerant or a leak in your air conditioning system.
How can I tell if I have Leaky Ductwork?
Leaking ducts often make noise when the system comes off and on and you’ll notice that the rooms with leaky duct problems are never cool enough.
My Air conditioner runs constantly!
When your air conditioners evaporator and condenser air coils get to dirty they’ll reduce your air conditioners ability to cool your home and cause the air conditioner to run constantly and dramatically reduce the life of your air conditioner and increase your energy bill every month.
What is an HSPF rating?
The Heating Seasonal Performance Factor or HSPF, is a unit of measure utilized to rate heat pumps by their levels of heating efficiency. More efficient heat pumps will have a higher HSPF rating. This rating ranges from 7 to 9.4.
What is an AFUE rating?
Annual Fuel Utilization Efficiency or AFUE, is the measurement of furnace heating efficiency. The more efficient a furnace is, the greater the AFUE rating. This rating ranges from 80% to over 90% AFUE now, but many Texas homeowners have old equipment and these units are as low as 50% efficient abd should be replaced even if they work well. If your furnace is more than 10 years old, it will likely have an AFUE rating lower than 80%. This means that your furnace is wasting energy and costing you more money.