Frequently Asked Questions
Who do I contact for air conditioning and heating products and service?
For questions concerning new products, energy efficiency ratings, savings on your utility bills, or repair or replacement services, call our office at
Horizon Air Conditioning of Arizona, Inc. We can answer all of your heating and cooling questions.

How often should filters be cleaned or replaced?
Typically, filters should be cleaned or replaced once a month. Some units are equipped with permanent filters. They can be cleaned according to
the instructions supplied by the equipment manufacturer. Disposable filters should be replaced with filters of the same type and size as the original
filter. Disposable filters for Bullhead City air conditioning needs are easily obtained at most hardware stores.

What do rating numbers mean?
The U.S. government requires an efficiency rating of all air conditioning and heating equipment. The rating reflects the percentage of energy used
efficiently, with a high rating indicating high-efficiency. The next two topics address this issue in greater detail.  

What is a SEER?
There are special names for the efficiency ratings of various types of equipment. Air conditioning equipment is rated by the Seasonal Energy
Efficiency Rating, or SEER. The higher the SEER rating, the more efficient the unit.

What does HSPF stand for?
There are special names for the efficiency ratings of varying types of equipment. Heat pump equipment in the heating mode is rated by the Heating
Seasonal Performance Factor, or HSPF. The higher the HSPF rating, the more efficient the unit.

Should outdoor units be covered in winter?
No. Heat pumps operate year-round and should never be covered. Similarly, air conditioners that operate seasonally are built to withstand an
outdoor environment and need not be covered. However, due to the sandy environment, it is recommended you have a Spring Service annually,
especially if the outdoor unit sits on the ground. Call Horizon Air Conditioning of Arizona, Inc., if you have any questions.

Should a thermostat be set to "auto" or "'on"?
Preferably "auto". That way, the fan operates only when the temperature requires it. (This is the most used and the most efficient setting.) There are
advantages to using the "on" setting. Air is constantly filtered through the unit's air filter and the constantly circulating air results in an even
temperature throughout the house. Bullhead City air conditioning is virtually required due to the heat of our summers. Keeping the thermostat on
"auto" will help to ensure that your desired temperature is constant.

Can shrubs or flowers be planted around an outdoor unit?
Yes. However, we recommend that plants be no closer than 18 inches to the unit. This allows for plenty of room for air circulation in and out of the
unit. Without this room for air circulation, the unit could overheat, resulting in a premature need for service.

If an outdoor unit needs replacing, should the indoor unit be replaced too?
Yes. Air conditioning and heating units are designed to operate as a complete, matched system. The efficiency rating is based on the entire system.
Replacing the entire system ensures the system will be reliable and efficient. At Horizon Air Conditioning of Arizona, Inc.,  you can save money on
the cost of a new indoor coil by having it replaced at the same time you replace the outdoor unit.

How do I know what size unit our house needs?
Many factors are considered before making a recommendation. Factors like … size of the house, type of home (manufactured or site-built), age of
home, climate, the number and type of windows installed, insulation, and even the number of people living in the house. Contact Horizon Air
Conditioning of Arizona, Inc., to help you determine the size unit your home will need.

Why should I replace my existing heating or air conditioning system?
You may wish to consider replacing your air conditioning or heating system if it is old, inefficient or in need of frequent or costly repair. Today's
systems are as much as 60% more efficient than those systems manufactured as little as 10 years ago. In addition, if not properly maintained, wear
and tear on a system can reduce the actual or realized efficiency of the system. If you are concerned about utility bills or are faced with an
expensive repair, you may want to consider replacing your system rather than enduring another costly season or paying to replace an expensive
component. The utility cost savings of a new unit may provide an attractive return on your investment. If you plan on financing the purchase, the
monthly savings on your utility bill should be considered when determining the actual monthly cost of replacing a system. The offsetting savings
may permit you to purchase a more efficient system. The experts at Horizon Air Conditioning of Arizona, Inc., can assist you with any questions you
may have regarding size, efficiency ratings and prices.

What is involved in the change out of an old system?
Beside the placement of the new equipment, Horizon Air Conditioning of Arizona, Inc.,, will inspect several items and make a determination of
whether or not these items need to be replaced. Some of the items to be inspected and possibly replaced include, but are not limited to, the
ductwork, the insulation, the refrigerant piping, the electrical service, wiring, thermostat, condensate piping, flue piping, flue terminations, chimney
liner, slabs, filter, driers, registers, grills, drain pans and evaporator coil.

What is involved with the installation of a new system?
If a system is being added to the home for the first time, most of the items noted in the previous answer may be required to install the new system.
Besides the equipment, the most significant other component will be the ductwork. The ductwork can be either metal or fiberglass type ductwork.
The ductwork needs to be properly sized to deliver the right amount of air to each room. The ductwork consists of supply and return ductwork. The
supply duct is attached to the outlet of the furnace or air handler and delivers air to individual zones in your home. Horizon Air Conditioning of
Arizona, Inc., will determine the size of the ductwork going into a space by the amount of air that needs to be delivered to the space. The return
ductwork attaches to the inlet of the air handler or furnace and draws the air to be conditioned from the space. The filter, which is in the return air
ductwork, needs to be placed as close to the furnace or air handler as possible.

Should I change my indoor coil?
When replacing your air conditioner or heat pump the answer is most likely yes. The efficiency ratings that are advertised for the air conditioner or
heat pump are based off the performance as part of a matched system. If only the outdoor portion is changed the efficiency and savings could be
less than that of a matched system.

Where is my air handler / furnace located?
It depends on the application. The furnace or air handler could be in the basement for an up-flow application, your attic for a horizontal
application or in a utility or garage area for either an up-flow or down-flow application. You may also have a self-contained, or package unit, in
which case the indoor and outdoor unit have been combined into one package and mounted outside on a slab or on the rooftop.

How long should my unit last?
If you perform the recommended maintenance and service suggested for your unit, industry averages suggest that an air conditioner should last 12-
15 years and a gas furnace should last as many as 20 or 25 years. These ages may vary, depending how often the system is used, how many in the
household, whether the unit or units have been regularly serviced and personal comfort levels.


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