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Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

hvac-eng.com

Home - HVAC/R & Solar

Page Load Speed

5.9 sec in total

First Response

71 ms

Resources Loaded

4 sec

Page Rendered

1.8 sec

hvac-eng.com screenshot

About Website

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Key Findings

We analyzed Hvac-eng.com page load time and found that the first response time was 71 ms and then it took 5.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

hvac-eng.com performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

21/100

10%

LCP (Largest Contentful Paint)

Value34.2 s

0/100

25%

SI (Speed Index)

Value22.5 s

0/100

10%

TBT (Total Blocking Time)

Value11,570 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.277

44/100

15%

TTI (Time to Interactive)

Value42.1 s

0/100

10%

Network Requests Diagram

hvac-eng.com

71 ms

hvac-eng.com

425 ms

style.min.css

35 ms

mediaelementplayer-legacy.min.css

31 ms

wp-mediaelement.min.css

34 ms

Our browser made a total of 170 requests to load all elements on the main page. We found that 29% of them (50 requests) were addressed to the original Hvac-eng.com, 21% (35 requests) were made to I0.wp.com and 8% (14 requests) were made to C0.wp.com. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source I0.wp.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 451.0 kB (6%)

Content Size

7.8 MB

After Optimization

7.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Hvac-eng.com main page is 7.8 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. Only a small number of websites need less resources to load. Images take 6.3 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 255.8 kB

  • Original 314.2 kB
  • After minification 314.2 kB
  • After compression 58.4 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 255.8 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 125.8 kB

  • Original 6.3 MB
  • After minification 6.2 MB

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. HVAC Eng images are well optimized though.

JavaScript Optimization

-6%

Potential reduce by 61.9 kB

  • Original 1.0 MB
  • After minification 1.0 MB
  • After compression 985.3 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. This website has mostly compressed JavaScripts.

CSS Optimization

-9%

Potential reduce by 7.4 kB

  • Original 87.4 kB
  • After minification 85.2 kB
  • After compression 80.0 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. Hvac-eng.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 87 (59%)

Requests Now

147

After Optimization

60

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 147 CSS, Javascripts, AJAX and image requests in order to completely render the main page of HVAC Eng. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 56 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

hvac-eng.com

hvac-eng.com

71 ms

hvac-eng.com

hvac-eng.com

425 ms

style.min.css

style.min.css

35 ms

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31 ms

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34 ms

style-index.css

style-index.css

38 ms

bootstrap-icons.css

bootstrap-icons.css

38 ms

chatbot.css

chatbot.css

42 ms

style.css

style.css

63 ms

skins.css

skins.css

77 ms

name_directory.css

name_directory.css

47 ms

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44 ms

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57 ms

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30 ms

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30 ms

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27 ms

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8 ms

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17 ms

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16 ms

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15 ms

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181 ms

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98 ms

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86 ms

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355 ms

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71 ms

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56 ms

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54 ms

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43 ms

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22 ms

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22 ms

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30 ms

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29 ms

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5 ms

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48 ms

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33 ms

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51 ms

public.js

public.js

60 ms

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102 ms

image-1.png

image-1.png

289 ms

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351 ms

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coil-selection-software.jpg

249 ms

best-hvac-design-software.jpg

best-hvac-design-software.jpg

389 ms

commercial-blast-chiller-benefits.jpg

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388 ms

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389 ms

free-steam-handbook-download.png

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755 ms

chiller-heat-rejection-system-configurations.png

chiller-heat-rejection-system-configurations.png

540 ms

chiller-pump-down-procedures.png

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888 ms

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885 ms

calculating-water-flow-rate-in-hvac.png

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751 ms

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749 ms

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1160 ms

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883 ms

optimizing-hvac-system-design.jpg

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886 ms

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987 ms

commercial-blast-chiller-benefits.jpg

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985 ms

psychrometric-calculator-for-hvac.jpg

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888 ms

tev-superheat-setting-calculation.jpg

tev-superheat-setting-calculation.jpg

889 ms

chiller-heat-rejection-system-configurations.png

chiller-heat-rejection-system-configurations.png

887 ms

psychrometric-calculator-for-hvac.jpg

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985 ms

drip-irrigation-flow-rate-calculator.png

drip-irrigation-flow-rate-calculator.png

1598 ms

valve-flow-capacity-calculation.webp

valve-flow-capacity-calculation.webp

987 ms

refrigeration-system-performance-calculations.webp

refrigeration-system-performance-calculations.webp

1157 ms

air-conditioning-condensate-calculation.webp

air-conditioning-condensate-calculation.webp

1158 ms

saturated-steam-temperature-calculator.jpg

saturated-steam-temperature-calculator.jpg

1155 ms

sheet-metal-thickness-calculator.jpg

sheet-metal-thickness-calculator.jpg

1154 ms

duct-size-calculation-tool.png

duct-size-calculation-tool.png

1254 ms

flexible-duct-sizing-calculator.jpg

flexible-duct-sizing-calculator.jpg

1255 ms

air-changes-per-hour-calculator.jpg

air-changes-per-hour-calculator.jpg

1158 ms

air-conditioner-btu-calculator.jpg

air-conditioner-btu-calculator.jpg

1253 ms

ashrae-weather-design-data.jpg

ashrae-weather-design-data.jpg

1254 ms

coil-selection-software.jpg

coil-selection-software.jpg

1158 ms

troubleshooting-irrigation-pump-issues.jpg

troubleshooting-irrigation-pump-issues.jpg

1159 ms

transitioning-to-natural-refrigerants.jpg

transitioning-to-natural-refrigerants.jpg

1159 ms

calculating-water-flow-rate-in-hvac.png

calculating-water-flow-rate-in-hvac.png

1160 ms

image-14-1024x536.png

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248 ms

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247 ms

show_ads_impl.js

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321 ms

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192 ms

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189 ms

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189 ms

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191 ms

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191 ms

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191 ms

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269 ms

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249 ms

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267 ms

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247 ms

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269 ms

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367 ms

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368 ms

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115 ms

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Accessibility Review

hvac-eng.com accessibility score

89

Accessibility Issues

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

High

Buttons do not have an accessible name

High

Links do not have a discernible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Best Practices

hvac-eng.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

hvac-eng.com SEO score

93

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Hvac-eng.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Hvac-eng.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.

Social Sharing Optimization

hvac-eng.com

Open Graph data is detected on the main page of HVAC Eng. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: