Having read our first five things you need to know (Indoor Air Quality; Choosing the Right System; why Brand is Not Super Critical; Why High Efficiency Is, and Why You’re your Chosen Contractor is also Key) let’s tackle the next Five Things You Must Know Before Buying an HVAC System

In the 1970’s, the government established a standard for testing and rating cooling systems. This came to be known as the Seasonal Energy Efficiency Ratio (SEER). The higher the rating, the higher the efficiency. Many things can contribute to the SEER.