adding www. redirect not working?

Before when anyone entered ecigsavings.com into their browser it would redirect them to http://www.ecigsavings.com. I never had to add any redirects in my .htaccess for it to do this as it seemed to do this automatically with the WordPress address (URL) option in settings which is currently set to http://www.ecigsavings.com but its not directing. Maybe somehting in my htaccess is conflicting with it? I copied and pasted it below.

# BEGIN W3 Total Cache
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{REQUEST_URI} \/$
    RewriteCond %{REQUEST_URI} !(\/wp-admin\/|\/xmlrpc.php|\/wp-(app|cron|login|register).php|wp-.*\.php|index\.php) [OR]
    RewriteCond %{REQUEST_URI} (wp-comments-popup\.php|wp-links-opml\.php|wp-locations\.php) [NC]
    RewriteCond %{REQUEST_METHOD} !=POST
    RewriteCond %{QUERY_STRING} =""
    RewriteCond %{HTTP_COOKIE} !(comment_author|wp-postpass|wordpress_\[a-f0-9\]\+|wordpress_logged_in) [NC]
    RewriteCond %{HTTP_USER_AGENT} !(bot|ia_archive|slurp|crawl|spider) [NC]
    RewriteCond /home/content/33/3864233/html/ecigsavings/wp-content/w3tc/pgcache/$1/_default_.html%{ENV:APPEND_EXT} -f
    RewriteRule (.*) wp-content/w3tc/pgcache/$1/_default_.html%{ENV:APPEND_EXT} [L]
</IfModule>
# END W3 Total Cache

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

# 1 YEAR
<FilesMatch "\.(flv|ico|pdf|avi|mov|ppt|doc|mp3|wmv|wav)$">
Header set Cache-Control "max-age=29030400, public"
</FilesMatch>

# 1 WEEK
<FilesMatch "\.(jpg|jpeg|png|gif|swf|JPG)$">
Header set Cache-Control "max-age=604800, public"
</FilesMatch>

# 3 HOUR
<FilesMatch "\.(txt|xml|js|css)$">
Header set Cache-Control "max-age=10800"
</FilesMatch>

# NEVER CACHE
<FilesMatch "\.(html|htm|php|cgi|pl)$">
Header set Cache-Control "max-age=0, private, no-store, no-cache, must-revalidate"
</FilesMatch>

# BEGIN Define Mime Types (in case /etc/mime.types is poorly configured or incorrect)
<IfModule mod_mime.c>
AddType application/x-javascript		.js
AddType application/x-shockwave-flash	.swf
AddType image/bmp						.bmp
AddType image/gif						.gif
AddType image/pjpeg						.pjpeg
AddType image/jpeg						.jpeg
AddType image/jpg						.jpg
AddType image/png						.png
AddType image/svg+xml					.svg
AddType image/tif						.tif
AddType image/tiff						.tiff
AddType image/x-icon					.ico
AddType text/css						.css
AddType text/htm						.htm
AddType text/html						.html
AddType text/plain						.txt
AddType text/xml						.xml
AddType text/xsd						.xsd
AddType text/xsl						.xsl
</IfModule>
# END Define Mime Types

<FilesMatch "\.(bmp|css|ico|html?|js|tiff?|gif|p?jpe?g|png|svgz?|swf|txt|xsd|xsl|xml|JPG)$">
<IfModule mod_headers.c>
# Set Pragma header
Header set Pragma "public"
# Set Cache-Control header
Header append Cache-Control "public, must-revalidate, proxy-revalidate"
</IfModule>

# Set Entity Tag header
FileETag MTime Size
</FilesMatch>
# END Headers: Ensure client-side caching of objects

# BEGIN Do not allow WordPress to process static objects
RewriteCond %{REQUEST_FILENAME} !^.*\.bmp [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.css [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.gif [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.html? [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.js [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.p?jpe?g [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.png [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.svgz? [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.swf [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.tiff? [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.txt [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.xsd [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.xsl [NC]
RewriteCond %{REQUEST_FILENAME} !^.*\.xml [NC]
# END Do not allow WordPress to process static objects

as a side note I have to disable the htaccess to get tinymce to work cause the pop ups come up blank. If anyone sees whats causing this in my htaccess please let me know. Noone has ever been able to resolve it.

thanks