One of the most important things to consider when installing a new HVAC system in your house is ensuring the system is the proper size for your home. Installing a system that is too small or too big can have an adverse impact on the effectiveness of the system in heating or cooling your home.
Load calculating is the process that 72 Degrees uses to determine the proper size HVAC system for your particular needs. This step-by-step process involves:
- Properly Installed and Adjusted R-410a refrigerant systems.
- Carefully inspecting potential areas of heat loss within your home, including leaky ducts, cracks in window panes, etc.
- Carefully inspecting potential areas of potential heat penetration within your home, including areas with the most sunlight, open spaces around door frames, etc.
- Ascertaining the measurements of all cooling and heating areas within your home to determine the appropriate size of the system to make sure it will work at maximum efficiency. We do this on a room-by-room basis to ensure accuracy.
- Use specialized tools, including software, to accurately determine the appropriate size equipment for your needs
There are several benefits to making sure your HVAC system is properly sized, including:
- Reduced on/off cycling, which results in greater efficiency and lower energy bills
- Reduced “short cycling” can lead to longer life for the system and less need for maintenance repairs
- Improved overall temperature optimization throughout your house
Load calculations are a crucial component of the service we offer before installing any type of HVAC system. We will also gladly perform load calculations during your seasonal HVAC system tune-up.
Please contact 72 Degrees at 919-439-8359 to schedule an appointment or learn more about how we can help you get the most out of your heating and cooling system.


Completely Satisfied: To take advantage of the tax incentives, I decided to replace my main floor HVAC/heat pump earlier this year. 72 Degrees was by far the most professional and thorough of the 4 contractors I interviewed. Quoted price was fair and included everything I wanted and nothing I didn't...
Outstanding customer service is always worth it's weight in gold if you ask me. Had our home heat pump go belly up. The guys from 72 Degrees came out and gave me what I feel was an honest assessment of the problem. Heat pump DOA… I DID NOT shop around and I usually give myself all the time I need for a purchase this large. This is how impressed I was with the salesman, his professionalism and over knowledge of his product...
Outstanding Company. I would give them a 6 if I could. They were very prompt in getting to the job, as a matter-of-fact, they called and asked if it was alright for them to come 2 hours ahead of schedule. This was "NOT" a problem for me. The tech was friendly and knew what he doing. He offered me options that no other service provider offered. He was done in about an hour and I had my system working again. I would recommend these guys any day of the week.
Courteous, Professional, Company with fast response time. I have been using 72 degrees for over a year now and every time I call they are right there. Their technicians are courteous, and professional and very knowledgeable about any issue that you may have.
Member Comments: Everyone I interacted with was very professional as well as friendly. There were other groups that I looked at that were less expensive, but 72 has the BEST warranties out of the service providers I looked into. I know they stand behind it as well. One of my friends used them and had an issue after installation; he told me the fix was taken care of immediately, and the president of the company came out to make sure he was satisfied. These folks stand behind their name and that means a lot to me.
72 deg. replaced my heating/cooling system. They were always on time , They called me to tell me when they would be working. The replacement was done very fast… 72 deg. had the right tools, manpower, and equipment to provide and install my new heating/cooling system. The front office worked hand in hand with the field crews to provide a super job "Well Done."




