The cost to replace an entire HVAC system depends on size and efficiency of the unit. The higher the tonnage and efficiency of the system, the higher the cost. For exact pricing, schedule an appointment for a free estimate with no obligation.

The average life of an HVAC system is about 10-12 years, but with proper care and regular maintenance, the life of the system can extend up to 15 years or more.

During an HVAC maintenance, you can expect the following:

• Filter replacement
• Check electrical components (capacitors, contactors, safety for proper operation, nd more)
• Check temperatures
• Check for proper voltages
• Clean (flush) condensating lines and during summer check up
• Washing condensing coil

There are federal standard code books that measure the size capacities of heating and cooling systems. Manual J is used for system capacity and Manual D is for duct sizing. Architects and mechanical contractors can size the system needed for the conditioned space.

We use AFUE (Annual Fuel Utilization Efficiency) standard to determine furnace efficiency. SEER (Seasonal Energy Efficiency Ratio) Standard is used to determine air conditioning efficiency. HSPF (Heating Seasonal Performance Factor) standard is used for Heat pump efficiency.

There are different factors to considered when determining the right size HVAC for your space. If the system is undersized it will not satisfy demand. If the system is oversized it will cool too fast and will not pull the humidity out of the space which will create uncomfortable conditions. With time, that moisture will turn to mold in the living space.

The only way to increase your system efficiency is to replace it with a higher efficiency system. With proper and regular maintenance, filter replacement, and maintaining clean coils, you can keep the current system at its peak performance that will extend the life of the system.

The proper air temperature depends on the outdoor ambient temperature, humidity, and the indoor design temperature. For Atlanta design, outdoor temperature for cooling is 91 degrees, 50% relative humidity, and indoor design temperature of 75 degrees. This will give you CTD (Cooling Temperature Differential) of 16 degrees. This means when your unit blows out 59 degrees or less, the system is operating ok and should be able to keep the 75 degrees indoor design temperature. As a general rule, we look for CTD of 18-20 degrees.

You should replace your filters every 3 months for MERV 8 filters in households without pets. When using a MERV 11 filter or MERV 16 filter, they can be replaced once per year.

Air conditioner maintenance is usually done 2 times per year. During the summer months, you should schedule cooling check-up and maintenance. During the winter months, you should schedule heating check-up and maintenance.

Prior to scheduling service, always check for tripped breakers. Check the furnace power switch to ensure it is on. This switch may look like a light switch. If trade contractors have been working around your furnace, it is often left in the off position by mistake. You may also want to check if your unit is frozen or if there is water in your drain pan. This is important information you can provide to the technician coming to check your system.