Air On Demand Blog: Archive for August, 2012

Coral Gables Air Conditioning Tip: Thermostat Options for Ductless AC Systems

Monday, August 27th, 2012

Ductless systems offer cooling and heating capacities for individual or multiple rooms while remaining quiet and out of the way.  But, because of their basic setup of being installed high on a wall or even at ceiling level, access to the indoor air handling unit to control temperatures can be tricky.  So just how do you control the temperature settings on a ductless air conditioning and heating system?  The Coral Gables air conditioning experts at Air On Demand understand the thermostat options for ductless systems and have provided the following information on ductless system thermostats.

Ductless System Thermostats

While there are some operational switches and controls on the indoor units themselves, most ductless systems use either wired thermostats that are connected to all of the indoor air handling units, or remote control thermostats which adjust the temperature settings on each indoor air handling unit.

No matter which kind of thermostat you invest in, ductless system thermostats can be preset to temperatures so that they automatically turn on and off when temperatures that are desired are reached without needing to have direct access to the actual indoor air handling unit.

Remote control thermostats are a great option because they communicate directly with the wall or ceiling unit, while at the same time taking a gauge of what the ambient temperature in the room is, away from the air handling unit.  The remote control thermostat will have not only temperature adjustment options, but will include sophisticated features such as setback temperatures, night  programming to save energy, timers, setting the clock, control fan speed, and even control special added features of a ductless system such as an air ionizer.

Wired thermostats are another great option, as they often provide a digital display which is easy to read and can help you adjust the temperatures for a single air handling unit.  Wired thermostats offer the option of temperature control, fan speed, sleep modes and holiday modes for better efficiency.

So whether you have only one ductless indoor unit installed, or multiple units that you want to control from separate locations, or multiple units that you want to control from one single location, the thermostat options for ductless systems are quite diverse.  Let the Coral Gables air conditioning specialists at Air on Demand help you decide which thermostat is right for your ductless system.

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Miami AC Contractor Guide: Choosing a Programmable Thermostat

Monday, August 20th, 2012

There are a lot of features to consider when purchasing a new programmable thermostat.  Don’t be overwhelmed by all of the options.  The Miami heating and air conditioning technicians at Air On Demand has the knowledge and expertise necessary to help you find the perfect programmable thermostat to help make your home more comfortable and your air conditioning system more efficient.

Programmable Thermostat Features

Here are some of the features that you can get in new thermostat. Not only will a new thermostat help you control your air conditioning system better, but there are many with features that can help you save energy. Each home is different, so its important to find the model with the features that best match your needs.

  • Digital thermostats offer the most features with multiple settings, options to override, and even automatically adjust for daylight savings changes.
  • Electromechanical systems use pegs or sliding bars to set temperatures and are fairly simple to program.
  • Digital back-lit displays
  • Touch screen pads for easy programming and viewing of information
  • Voice or phone programming
  • System on hold or vacation settings
  • Indicators that tell you when air filters need to be changed
  • Self-diagnostic systems that signal when there is a problem with the heating or air conditioning system
  • Automatic setback features allow you to set up a variety of schedules.  These setting can also be manually overridden for special needs without affecting the rest of the day’s programming.  There are a few models to choose from:
    • 7 day models let you set different temperatures for up to six times per day for each day of the week.
    • 5 + 2 models give you the flexibility of setting one program for Monday through Friday and another for Saturday and Sunday.
    • 5 + 1 + 1 models offer the option of one program for Monday through Friday, a separate schedule for Saturday, and a final schedule for Sunday.

Programmable Thermostat Features to Choose From

Whether you want the top of the line high-end programmable thermostat or one that only does a few main functions, Air On Demand can help you find the right one for your needs.  We can walk you through the process and explain each of these great thermostat features so that you can decide which features are the most important to you.  Contact Air On Demand today!

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AC Maintenance and Installation Rebates for Homestead, FL Residents

Friday, August 17th, 2012

The City of Homestead is offering rebates for AC maintenance and air conditioning system installations for City of Homestead electricity customers! If you have not had an air conditioner tune-up or maintenance visit yet this year you can get $50 towards a maintenance visit. If you are looking to upgrade your system or install a new air conditioning system you can save up to $350 with a rebate.

AC Rebates | Homestead | Air On DemandThese rebates are incentives to encourage homeowners to make improvements to their home to increase energy efficiency and lower monthly energy bills. Regular AC maintenance and coil cleaning can reduce the energy use of your air conditioning and increase the efficiency of your system. Not only will you receive an rebate, but by increasing the efficiency of your system you can save money each month as well! Call Air On Demand to find out the best system upgrades for your home or to schedule a maintenance visit. If you are Homestead resident don’t forget to find out more about rebates available you!


One Time Annual AC Maintenance $50
Would you drive your car for years without getting a tune up? It’s just as important to have your A/C tuned up. Just cleaning your A/C coils alone can reduce your energy consumption and save you money on your electric bill.

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Miami Air Conditioning Question: How Do I Know When to Replace My Air Handler?

Monday, August 13th, 2012

The air handler in your Miami home is incredibly important. Whenever you change the thermostat to turn on your air conditioning or heating system, the air handler goes into action. Within the unit, the fan blower motor turns to move air from the heating or cooling unit into the ductwork, so it can be delivered to you through your home. If the air handler is not working properly or if it is showing signs of age, it may need to be replaced to ensure optimal efficiency from your Miami HVAC system.

Here are a few signs that your air handler may be at the end of its useful lifespan.

 Reduced Efficiency in Your Heating/Cooling System

The most common sign that an air handler is ready to be replaced is if the efficiency of your heating and cooling system suddenly drops through the floor. Maybe you are not getting even heating or cooling in every room of your home, or maybe your heating and cooling system suddenly costs much more operate. In either case, it could be due to a failing air handler which needs to be replaced.

 Improper Filtering

If the air-quality in your home starts to suffer, it could be due to the filters not working properly in your air handler. Sometimes it is just a clog or a bad filter. Other times, however, it can be due to the air handler itself not working properly.

Constant Repairs

Obviously, if you are calling in an expert to visit your home and perform AC repairs on your air handler seemingly every week, it might be more cost-effective just to have a new system installed. You can talk to a technician to discuss whether or not the price of installation will offset the cost of all those repairs.

HVAC Upgrade

If you have an old air handler, often when you upgrade your heating or air conditioning system, it is recommended to have a new air handler installed as well. Your technician will generally recommend to you whether this is necessary, but it is important to keep in mind in case you are planning on having a new furnace or air conditioner installed in the future.

Your air handler is incredibly important, so if it is showing signs of wear or if you think it may need to be replaced, take it seriously and have a Miami air conditioning professional Air On Demand inspect the system right away.

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Miami Air Conditioning Repair Guide: Causes of an AC Fan Running But Not Cooling

Monday, August 6th, 2012

When an AC fan and the corresponding compressor and condenser unit run normally the result is properly cooled indoor air.  However, there are instances when an AC fan runs with no cooled air flowing in it.  Air on Demand is a Miami air conditioning company that provides AC services such as air conditioning diagnostics and repair.  We can help you understand the causes of an AC fan running but not cooling the indoor air.

Causes of an AC Fan Running but Not Cooling

The central air conditioner fan is designed to blow the cold air which has already been created throughout a duct system and into various rooms.  Generally if the AC fan is still blowing but the air is not cold there are a few main AC problems which could be the culprit.

  • There could be a clogged condenser or dirty evaporator coils which will result in insufficient air-flow through the vents.
  • A refrigerant leak could cause refrigerant levels and refrigerant charge to fall below what is necessary to actually cool indoor air.
  • The thermostat could be acting up, which means electrical wiring may be to blame.
  • The ventilator fan may be failing and thus running more frequently than it should.
  • A faulty relay could be causing the air and the heat to both be running at the same time which means air is tepid rather than cooled.
  • Poor insulation in a building or portions of a building could mean that air conditioned air that comes out of the vents cooled is not able to remain cool for very long because outdoor temperatures are heating the inside much faster than if proper insulation were acquired.
  • Duct systems may also have leaks or insufficient insulation, which would cause air to flow into unused spaces like behind walls or under floors, rather than inside rooms where the vents lead.
  • Dirty filters could be blocking proper air-flow throughout the ducts.
  • A tripped circuit breaker for the outside condenser/compressor unit could leave the indoor air handling evaporator unit working without the cold air to accompany it.

It is easy to see that there can be any number of AC problems which could cause an air conditioner fan to continue blowing while the air indoors is never properly cooled.  Let the Miami air conditioning specialists at Air on Demand do a proper AC inspection to determine the true root cause of the AC problem and provide you with quality air conditioning repair services that will have your AC system back to blowing cold air in no time.

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Should You Repair or Replace Your Current AC System?

Thursday, August 2nd, 2012

Should you repair your current air conditioning system or is it time to upgrade and replace? We often have customers asking themselves this very question. We have created this sheet to help provide some information about air conditioning repair and air conditioning replacement in the Miami area. You may need to schedule a repair call, or perhaps you would like to find out about the energy savings available with the most efficient AC systems. If you have any questions or would like more information on air conditioning upgrades call Air On Demand. Our skilled HVAC representatives can answer all of your questions.

AC Repair or Replacement | Miami | Air On  Demand

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