=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Content-Type: application/pdf
Content-Length: 2106664
Connection: close
Server: nginx
Date: Sat, 10 May 2025 02:07:11 GMT
Last-Modified: Mon, 30 Nov 2020 15:47:56 GMT
Cache-Control: public
Strict-Transport-Security: max-age=31536000; includeSubDomains
Accept-Ranges: bytes
ETag: &quot;5fc5142c-202528&quot;
Vary: Accept-Encoding
X-Cache: Miss from cloudfront
Via: 1.1 9861e6b091d57fd1fecd62d7ccf5b01e.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: JFK52-P5
X-Amz-Cf-Id: 6OTLwnr2bPTOaZQ8msdDjL9TzYM428FzppAbd7Z-LVj_HYLlrKEa-w==

Request headers
================
HEAD /ia/partners/publications/pubdocs/DIY_Guide_May_2008.pdf HTTP/1.1
Host: www.energystar.gov
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.34 Safari/537.36
Accept: */*
Referer: https://greenmanual.rutgers.edu
Connection: close


Link is valid.