previous
  • Radiant Heat Comparison
    Radiant Heat Comparison
  • All about Roofing
    All about Roofing
  • 7 Smart Kitchen Solutions
    7 Smart Kitchen Solutions
  • Master Carpenter Videos
    Master Carpenter Videos
  • Magazine Departments
    Magazine Departments
  • Remodeling Articles
    Remodeling Articles
  • Video: Install a Fence
    Video: Install a Fence
  • 9 Concrete Countertops Ideas
    9 Concrete Countertops Ideas
  • Energy-Smart Details
    Energy-Smart Details
  • Clever daily tip in your inbox
    Clever daily tip in your inbox
  • Video Series: Tile a Bathroom
    Video Series: Tile a Bathroom
  • Tips & Techniques for Painting
    Tips & Techniques for Painting
  • Read FHB on Your iPad
    Read FHB on Your iPad
  • 7 Small Bathroom Layouts
    7 Small Bathroom Layouts
  • 7 Trim Carpentry Secrets
    7 Trim Carpentry Secrets
  • Design Inspiration
    Design Inspiration
  • Basement Remodeling Tips
    Basement Remodeling Tips
next
Pin It

What's Cool in Air Conditioning?

Understanding the technology behind today's systems improves your chances of installing the right one

In this article, contributing editor Sean Groom explains how to choose the most efficient central air-conditioning system for your home and your budget. In order to do so, it's necessary to understand four measurements: cooling capacity, which is described in tons; British thermal units (Btu); the energy-efficiency ratio (EER); and the seasonal energy-efficiency ratio (SEER). Most residential central air-conditioning systems are split systems, which means that they have an indoor and an outdoor unit. For a system to achieve its advertised SEER rating, the two units must be matched properly. A system with a two-stage or variable-speed compressor and with a SEER rating between 19 and 24.5 is the most efficient, and a variable-speed fan on the air handler contributes about 1 SEER to the system's performance. Throughout the article is a series of shopping tips on topics such as how to understand the advertised SEER rating of a model line from a single manufacturer, why higher efficiency means fewer sizing choices, and how to understand manufacturers' claims about refrigerants. In a sidebar, Groom looks at SEER ratings in three categories--economy, efficient, and very efficient--and describes the changes manufacturers make to systems in order to increase their efficiency. In another sidebar, Groom explains how to find a good installer and why that is important.

What's Cool in Air Conditioning?
Plus get a free gift
Become a Fine Homebuilding Member and get 3 months free. Offer ends 1/30/15 Start your free trial now