Q: Would a bigger A/C be better?
A: Bigger is not better in air conditioning. It’s important that we do a load calculation to determine what size equipment is needed based on building type, windows, and insulation. This way we get a proper sized unit that will properly take the humidity out of the home as well as cool the home. If the unit is too large it will not have enough run time to properly dehumidify the air which results in many problems including mold.
-Submitted by Kirkwood Heating and Air Conditioning

Q: Why should I buy 2 stage equipment?
A: Load calculations are based on extreme outdoor temps such as 90 degrees for air conditioning and 0 degrees for heating. We run our equipment in between those temps and that is when the 2 stage units shine. There is no need to run full capacity on those days. Most units will operate on low stage 90% of the time and do a better job of keeping even temps throughout the home.
-Submitted by Kirkwood Heating and Air Conditioning

Q: What does SEER mean?
A. SEER – Seasonal Energy Efficiency Ratio. This is a system for rating the efficiency of cooling equipment. It is calculated by dividing the cooling capacity of a continuously operating air conditioner by the electric power input. The higher the SEER, the less your unit will cost to operate.
-Submitted by Hoffmann Brothers Heating & Air Conditioning


Q: Will a set back thermostat save me money?
A: When your lifestyle allows you to set back the thermostat during the day while at work and in the evening while sleeping you could save as much as 25 to 30 percent on utility bills.
-Submitted by Kirkwood Heating and Air Conditioning

Q: What type of filter should I use in my furnace?
A: There are many types and kinds of filtration systems. It is better to ask your HVAC contractor what is best for you and your family. But whatever you do, DO NOT use the cheap fiberglass furnace filters. They are less than 7% efficient(ASHRAE) and do not filter any of the contaminates that can make you sick.
– Submitted by Ductz of West St. Louis

Q: Should I have my coil and blower cleaned periodically?
A: Yes. A buildup of .42 inches of dirt on a heating or cooling coil can result in a decrease of efficiency by 21%. (EPA)
-Submitted by Ductz of West St. Louis

Q: Why is it important to have regular maintenance on my home comfort equipment?
A: You wouldn’t buy a brand new car and never expect to have to air the tires, change the oil, and check out any unusual noises, would you? Well, in the same way it is important to have regular inspections of your comfort equipment by a qualified technician. Just as a well running car can get the best gas mileage and keep you safe on the road, properly running home comfort equipment will run more efficiently and keep you comfortable and safe in your home.
-Submitted by Hoffmann Brothers Heating & Air Conditioning

Q: Will my new furnace work differently than my old one?
A: Maybe. When you install a new indoor comfort system in your home, you’ll probably notice it operates differently than your old system. Radical changes have taken place in the technology of the comfort industry in recent years. These changes will affect how your system operates, and also may affect what you notice about your system.
-Submitted by Hoffmann Brothers Heating & Air Conditioning

Q: What are furnace ratings?
A: Furnaces are rated by the Annual Fuel Utilization Efficiency ratio (AFUE), which is the percent of heat produced for every dollar of fuel consumed. Like the miles per gallon on you car, the higher the AFUE rating, the lower your fuel costs. All furnaces manufactured must meet at least 78% AFUE. If your furnace is 10 to 15 years old, it probably falls well below the current furnace minimum and wastes energy.
-Submitted by Hoffmann Brothers Heating & Air Conditioning

Q: So I can just look for a furnace with the highest AFUE rating right?
A: Not exactly. The efficiency rating is just one factor to consider when looking at new furnaces. Furnaces use electricity to run fans and motors. The amount of electricity used varies greatly, depending on the type of furnace. Be sure to check electricity usage before making a purchase decision. Other important factors to consider include:
-How long you plan to live in your house
-Special comfort needs
-Fuel availability
-Fuel cost
-Geographic area and climate
All these factors, plus your lifestyle and family needs, add up to show you which system is best for you.
-Submitted by Hoffmann Brothers Heating & Air Conditioning

Q: How often should we change the batteries in our thermostat?
A: Every year, with your smoke alarm.
-Submitted by Stiehl Service Company

Q: Do we have to cover our outdoor unit for winter?
A: No, it is waterproof.
-Submitted by Stiehl Service Company

Q: How often should we change our filters?
A: Three to four times a year.
-Submitted by Stiehl Service Company


Q: Why should I have my ducts cleaned?
A: Because they get dirty too, only you can’t see the majority of the contaminants that are making you sneeze and cough. They are located in ductwork that needs special tools to be dislodged and removed. An average 6 room home collects 40 pounds of dust each year. (Discover Magazine)
-Submitted by Ductz of West St. Louis

Q: I have allergies, can having my ducts cleaned help me?
A: Yes. 1 out of 6 people who suffer from allergies do so because of the direct relationship to fungi, pollen, pet dander and bacteria found in the air duct system. (Total Health and Better Health Magazine)
-Submitted by Ductz of West St. Louis

Q: Why should I have my dryer vent inspected and professionally cleaned regularly?
A: More than 15,000 structural fires are caused by clogged or damaged dryer vents each year. (US Fire Administration)
-Submitted by Ductz of West St. Louis

Q: What is indoor air quality?
A: Air pollution surrounds us daily…car exhaust, smog, indoor air. Indoor air? Yes, indoor air quality is important to your health. Your exposure to air pollutants can be up to 100 times higher indoors than outdoors. The American Lung Association estimates that most people spend 90% of their time indoors. So, clean indoor air is important. Allergies and asthma are two health problems that can be helped with clean indoor air. When airborne irritants are removed, allergy and asthma sufferers often find relief from their symptoms. Even healthy people who have never suffered from allergies can benefit from clean air. Dust, smoke and other particles float around in the air causing your drapes and furniture to gather dust. By removing airborne dust particles, you reduce the amount of exposure they have on your respiratory system.
-Submitted by Hoffmann Brothers Heating & Air Conditioning


Q: What is geothermal?
A: Traditional air conditioning or air source heat pumps have an outside condensing unit to expel or gain heat from the air. Geothermal units do not have an outside unit. Geothermal heat pumps are connected to a piping loop system in the ground that rejects heat or collects heat from the ground which is a constant 57 degrees. The small difference from the ground temperature to the indoor comfort level thus requires very little energy. If you keep your house 70 degrees, that is only a 13 degree difference. On a traditional system if you keep your house 70 and it is 40 degrees outside, there is a 30 degree difference thus costing more energy.
-Submitted by Keeven Heating & Cooling