Frequently Asked Questions
Here are some common questions homeowners have about their HVAC systems. If you would like further information on any of these topics or have a question not listed feel free to call or text us at 859-525-0100 or complete our contact form.
How often should I have my unit serviced?
Depending on type of equipment, it is best to service your HVAC system once in the spring and then once in the fall.
How often do I need to change my air filters?
It depends on the indoor air quality… but typically once a month, some filters semi-annually and then electronic air cleaners require quarterly cleaning.
Should I cover my unit in the fall and winter?
There is no real need….. When your unit is serviced in the spring, the technician will clean debris from inside the condenser. The issue arises when the homeowner forgets to remove the cover and then starts the unit!
What can I do to lower my energy bill?
Use a programmable thermostat. Upgrade your equipment if it is not Energy Star Rated.
What causes AC units to freeze up?
Low air flow. Dirty filters. Low on refrigerant charge.
What can I do about indoor air quality?
Regular maintenance and install air purifiers.
Is it normal for my furnace to smell like something is burning the first time I turn it on?
Yes… this is caused by dust accumulation on the heat exchanger or heating elements.
What should I do if my unit is leaking water?
If it poses a danger to property, shut the unit off and call our service department. You may also check your condensate drain to be sure there is no blockage.
How do I know when it’s time to replace my system?
When major components fail resulting in costly repairs. Utility cost increases.
What should my humidity level be?
Minimum 30% in the winter and maximum 55% summer.
How long should my unit last?
Depending on the model and quality of the unit and type….
Heat Pumps and Air Conditioners should last approximately 15 to 20 years if maintained annually
Gas Furnaces and oil furnaces should last approximately 15 to 30 years if maintained annually.
It’s so dry in my home when the furnace is running what can I do?
Install a whole home humidifier.
Will I save money by closing the vents and not heating/cooling rooms I’m not using?
This depends on the type of blower that is in the furnace or air handler.
What happens when I need a call on a holiday or weekend?
Unlike most companies, A&B offers 24-7 service.
Why is the temperature uneven in my home?
This can be caused by various reasons…
Poor insulation…. Poor duct work… Improper air balance
What is the difference between R-22 and R-410A refrigerants?
Unlike R22, R410a does not contribute to the depletion of the ozone layer. R410a is better at absorbing and releasing heat than R22, making it more energy efficient to use. Since R410a operates at higher pressures it requires the use of tougher and more durable air conditioner parts.
Why don’t you charge by the hour?
Flat rate ensures you are given a price ahead of time no matter how long it takes to complete the repair or the price of the part.
How can I increase the efficiency and life of my heating and cooling system?
Regular maintenance by a professional HVAC service Technician.
What are the advantages of a programmable thermostat?
Lower utility cost. Desired temperatures at desired times.
Is there anything I can check prior to calling for service?
Check breakers, on & off switches. Be sure your thermostat is set properly.
Common HVAC terms / definitions
SEER Rating (Seasonal Energy Efficiency Ratio)
The SEER measures air conditioning and heat pump cooling efficiency, which is calculated by the cooling output for a typical cooling season divided by the total electric energy input during the same time frame. A SEER rating is a maximum efficiency rating, similar to the miles per gallon for your car. Your car might get 28 miles per gallon on the highway, but if you’re stuck in city traffic it could be lower. If your air conditioner is 21 SEER, that’s its maximum efficiency.
AFUE Rating (Annualized Fuel Utilization Efficiency)
Furnaces are rated by the Annual Fuel Utilization Efficiency (AFUE) ratio, which is the percent of heat produced for every dollar of fuel consumed. Like the miles-per-gallon rating on your automobile, the higher the AFUE rating, the lower your fuel costs.
BTU (British Thermal Unit)
The British thermal unit (BTU or Btu) is a unit of heat; it is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. It is also part of the United States customary units.
Compressor
Component within your AC or Heat Pump which pumps the refrigerant. Like the “Heart” in your body.
Heat Exchanger
A heat exchanger is a device that allows heat from a fluid (a liquid or a gas) to pass to a second fluid (another liquid or gas) without the two fluids.
In a gas furnace or oil furnace, it is where the combustion takes place and the blower blows air across it providing heat into your home. The heat exchanger should be checked annually to be sure there are no leaks.
