1 sec in total
174 ms
651 ms
179 ms
Click here to check amazing SterlingHVAC content for United States. Otherwise, check out these important facts you probably never knew about sterlinghvac.com
Sterling HVAC, the most recognized name in the game, has been producing industry leading high efficiency heating products for over 50 years. From traditional Unit Heaters to Rooftop and Indoor Make-Up...
Visit sterlinghvac.comWe analyzed Sterlinghvac.com page load time and found that the first response time was 174 ms and then it took 830 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.
sterlinghvac.com performance score
name
value
score
weighting
Value2.6 s
65/100
10%
Value12.0 s
0/100
25%
Value3.5 s
88/100
10%
Value80 ms
99/100
30%
Value0.266
46/100
15%
Value7.1 s
51/100
10%
174 ms
42 ms
44 ms
109 ms
46 ms
Our browser made a total of 36 requests to load all elements on the main page. We found that 75% of them (27 requests) were addressed to the original Sterlinghvac.com, 8% (3 requests) were made to S7.addthis.com and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (267 ms) belongs to the original domain Sterlinghvac.com.
Page size can be reduced by 388.3 kB (31%)
1.3 MB
869.3 kB
In fact, the total size of Sterlinghvac.com main page is 1.3 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. Images take 665.1 kB which makes up the majority of the site volume.
Potential reduce by 45.3 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 45.3 kB or 68% of the original size.
Potential reduce by 10.2 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. SterlingHVAC images are well optimized though.
Potential reduce by 319.1 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 319.1 kB or 63% of the original size.
Potential reduce by 13.8 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Sterlinghvac.com needs all CSS files to be minified and compressed as it can save up to 13.8 kB or 83% of the original size.
Number of requests can be reduced by 8 (24%)
34
26
The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SterlingHVAC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
sterlinghvac.com
174 ms
news.css
42 ms
home2.css
44 ms
jquery.js
109 ms
jquery.newsticker.pack.js
46 ms
template2.css
44 ms
addthis_widget.js
10 ms
css
25 ms
ga.js
83 ms
300lo.json
72 ms
counter.5524cceca805eb4b9b2b.js
7 ms
heat-vent-ac-bg.gif
64 ms
shadow.png
67 ms
intertek-listed-us.gif
67 ms
sterling-hvac-logo.png
78 ms
nav-heating-ventilation.gif
66 ms
industrial-strength-heating.jpg
77 ms
arrow-bullet.png
69 ms
garage-guy-heater.png
140 ms
rooftop-heating-unit.jpg
71 ms
direct-fired-heating.jpg
70 ms
2014%20Xcelon%20Logo-01.svg
77 ms
xcelon-mua-open.png
147 ms
xcelon-mua-closed.png
267 ms
ahr.jpg
165 ms
info-box-bottom.gif
99 ms
info-box-header.gif
104 ms
rss.png
124 ms
made-in-the-usa.jpg
150 ms
sterling-sales-support.gif
169 ms
shadow-foot.png
161 ms
mestek-innovation-dark.png
170 ms
sh.8e5f85691f9aaa082472a194.html
58 ms
__utm.gif
51 ms
shares.json
30 ms
YsNHj2Yx5KzHzIjNe-czdIbN6UDyHWBl620a-IRfuBk.woff
14 ms
sterlinghvac.com accessibility score
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
sterlinghvac.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
sterlinghvac.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sterlinghvac.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Sterlinghvac.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
sterlinghvac.com
Open Graph description is not detected on the main page of SterlingHVAC. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: