RESIDENTIAL FAN SIZING AND INSTALLATION



The above two pictures are what we call Whole House Fans. This type of fan can be used instead of your air conditioner on many summer days and nights. It brings in a cool breeze through your windows without using the energy eating air conditioning. Air Conditioners use about 80 to 90% more power than attics fans.

RAK Electrical's trained personnel are experts in all types of whole house and attic fan installation. We come in and size the fan for your house and guide you through the installation and operation of your new fan.  

SIZING WHOLE HOUSE FANS FOR YOUR HOME
Determining the amount of airflow in cubic feet per minute (cfm) that the whole house fan should provide involves a simple calculation. Multiply the total gross square footage of the house (include upstairs area) by the ceiling height (typically 8 feet). Select a fan that delivers between one-half to one time that amount of cfm at 0.1" static pressure. For example, a 25' x 40' one-story home is 1,000 square feet and would need an 8 x 1,000 x 1/2 = 4,000 cfm fan or better. A two-speed unit that delivers 4,500 cfm at the high setting (240 watts) and 3,200 cfm at low (120 watts) should be adequate.



SERVICE CHANGES
We do all service changes ex. 100 amps to 200amps, 100amps to 150 amps. Overhead and underground services



ALL TYPES OF LANDSCAPE LIGHTING
 24 or 120 volt (what's the difference?) see below

24 VOLT                                                                          120 VOLT
PROS                                   CONS                              PROS                                CONS

Cable buried shallower    Lighter duty                    Heavier duty                     Wire buried deeper
Easier to install                  Throws less light          Standard light bulbs       More time to install

The above are a few of the pros and cons between 24 volt (low voltage lighting) and 120 volt (high voltage lighting)