Tools & Wizards About Us
lennox.com screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

lennox.com

Air Conditioning and Heating Solutions | Lennox

Page Load Speed

3.9 sec in total

First Response

273 ms

Resources Loaded

2.4 sec

Page Rendered

1.2 sec

lennox.com screenshot

About Website

Visit lennox.com now to see the best up-to-date Lennox content for United States and also check out these interesting facts you probably never knew about lennox.com

Explore Lennox comfort and energy-efficient solutions for heating and cooling your space. Upgrade your home's HVAC system with industry-leading solutions.

Visit lennox.com

Key Findings

We analyzed Lennox.com page load time and found that the first response time was 273 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

lennox.com performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value9.9 s

0/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value4,410 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.061

98/100

15%

TTI (Time to Interactive)

Value16.2 s

6/100

10%

Network Requests Diagram

www.lennox.com

273 ms

f84cd4b274be3134_complete.js

34 ms

jquery-3.7.1.min.js

64 ms

homepage-hero-banner-carousel.js

160 ms

bootstrap.min.css

85 ms

Our browser made a total of 146 requests to load all elements on the main page. We found that 32% of them (46 requests) were addressed to the original Lennox.com, 12% (18 requests) were made to Fonts.gstatic.com and 6% (9 requests) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Lennox.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.0 MB (12%)

Content Size

16.2 MB

After Optimization

14.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lennox.com main page is 16.2 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 15.8 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 193.7 kB

  • Original 226.5 kB
  • After minification 181.4 kB
  • After compression 32.7 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. This page needs HTML code to be minified as it can gain 45.1 kB, which is 20% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 193.7 kB or 86% of the original size.

Image Optimization

-11%

Potential reduce by 1.8 MB

  • Original 15.8 MB
  • After minification 14.0 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. Obviously, Lennox needs image optimization as it can save up to 1.8 MB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-4%

Potential reduce by 6.6 kB

  • Original 176.1 kB
  • After minification 175.0 kB
  • After compression 169.5 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

-7%

Potential reduce by 128 B

  • Original 1.7 kB
  • After minification 1.7 kB
  • After compression 1.6 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. Lennox.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 69 (58%)

Requests Now

119

After Optimization

50

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 119 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lennox. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.lennox.com

www.lennox.com

273 ms

f84cd4b274be3134_complete.js

f84cd4b274be3134_complete.js

34 ms

jquery-3.7.1.min.js

jquery-3.7.1.min.js

64 ms

homepage-hero-banner-carousel.js

homepage-hero-banner-carousel.js

160 ms

bootstrap.min.css

bootstrap.min.css

85 ms

bootstrap-icons.css

bootstrap-icons.css

99 ms

fancybox.css

fancybox.css

101 ms

slick.min.css

slick.min.css

84 ms

slick-theme.min.css

slick-theme.min.css

98 ms

main.dotsass

main.dotsass

165 ms

popper.min.js

popper.min.js

104 ms

bootstrap.bundle.min.js

bootstrap.bundle.min.js

104 ms

slick.min.js

slick.min.js

104 ms

main.js

main.js

201 ms

fancybox.umd.js

fancybox.umd.js

104 ms

otSDKStub.js

otSDKStub.js

95 ms

gtm.js

gtm.js

112 ms

lennox_logo.svg

lennox_logo.svg

40 ms

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51 ms

green_overlay.png

green_overlay.png

58 ms

product_cloud.jpg

product_cloud.jpg

64 ms

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2dbeefa25cc3b71b5fe1e7f1eee63bd0

817 ms

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70880e390e22244072715e7ec0412cbe

76 ms

pagination_home_icon.svg

pagination_home_icon.svg

532 ms

cloud-product-top.png

cloud-product-top.png

161 ms

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b80a81d6e1c6a8d7c72ba7397622eabc

82 ms

cloud-product-bottom.png

cloud-product-bottom.png

162 ms

home-icon-white.png

home-icon-white.png

527 ms

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813 ms

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162 ms

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162 ms

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939 ms

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178 ms

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270 ms

arrow.svg

arrow.svg

516 ms

swipe_finger_icon.png

swipe_finger_icon.png

554 ms

icon-home.svg

icon-home.svg

554 ms

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Icon-awesome-linkedin.png

620 ms

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Icon-awesome-facebook-square.png

617 ms

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Icon-metro-instagram.png

618 ms

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720 ms

icon-globe.svg

icon-globe.svg

649 ms

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da82356d15009a9365fd7a1b2a8dd0e0

1267 ms

icon-gumtree.svg

icon-gumtree.svg

683 ms

icon-award.svg

icon-award.svg

716 ms

webp

webp

773 ms

webp

webp

774 ms

webp

webp

802 ms

seal-for-2252.png

seal-for-2252.png

776 ms

icon-facebook.svg

icon-facebook.svg

801 ms

icon-twitter-x.svg

icon-twitter-x.svg

808 ms

icon-youtube.svg

icon-youtube.svg

809 ms

icon-instagram.svg

icon-instagram.svg

828 ms

css2

css2

76 ms

js

js

125 ms

hotjar-1572359.js

hotjar-1572359.js

379 ms

analytics.js

analytics.js

379 ms

7079.js

7079.js

404 ms

fbevents.js

fbevents.js

397 ms

trackpoint-async.js

trackpoint-async.js

496 ms

spx

spx

376 ms

ndp.js

ndp.js

646 ms

banner_slide_bg.jpg

banner_slide_bg.jpg

387 ms

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0661f616a12028662828bc002bdf8f81

760 ms

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763 ms

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764 ms

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761 ms

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765 ms

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824 ms

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64613b38767fc679fd8589eec4834d97

799 ms

webp

webp

767 ms

webp

webp

817 ms

banner_bg.jpg

banner_bg.jpg

356 ms

product_cloud_slide.jpg

product_cloud_slide.jpg

445 ms

cdeec3ce-f45c-4dc9-a657-c87cd39de65c.json

cdeec3ce-f45c-4dc9-a657-c87cd39de65c.json

271 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4n.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4n.ttf

370 ms

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410 ms

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453 ms

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453 ms

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451 ms

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453 ms

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453 ms

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432 ms

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455 ms

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508 ms

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458 ms

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507 ms

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456 ms

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456 ms

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455 ms

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508 ms

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509 ms

bootstrap-icons.woff

bootstrap-icons.woff

287 ms

bootstrap-icons.woff

bootstrap-icons.woff

287 ms

e073ea289e95.js

e073ea289e95.js

362 ms

ajax-loader.gif

ajax-loader.gif

255 ms

otBannerSdk.js

otBannerSdk.js

96 ms

modules.842bcec28f9fd12bb79e.js

modules.842bcec28f9fd12bb79e.js

123 ms

collect

collect

96 ms

en.json

en.json

53 ms

collect

collect

71 ms

260 ms

ga-audiences

ga-audiences

92 ms

otFlat.json

otFlat.json

44 ms

otPcCenter.json

otPcCenter.json

52 ms

otCommonStyles.css

otCommonStyles.css

59 ms

LII_Lennox_BLK_and_RED.jpg

LII_Lennox_BLK_and_RED.jpg

60 ms

11 ms

powered_by_logo.svg

powered_by_logo.svg

28 ms

19 ms

pixels

pixels

67 ms

297 ms

js

js

253 ms

user-registering

user-registering

217 ms

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275 ms

click

click

418 ms

usermatch.gif

usermatch.gif

34 ms

Pug

Pug

214 ms

cs

cs

336 ms

um

um

254 ms

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put

put

217 ms

33302

33302

268 ms

match

match

22 ms

gdpr_consent=

gdpr_consent=

32 ms

rum

rum

41 ms

generic

generic

11 ms

sd

sd

11 ms

xuid

xuid

9 ms

53 ms

match

match

25 ms

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match

31 ms

60 ms

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match

28 ms

pixel.gif

pixel.gif

160 ms

setuid

setuid

11 ms

cm.aspx

cm.aspx

51 ms

info2

info2

32 ms

18 ms

pixel

pixel

17 ms

10 ms

pixel.gif

pixel.gif

291 ms

p

p

70 ms

11 ms

3.gif

3.gif

96 ms

Accessibility Review

lennox.com accessibility score

91

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

High

[aria-*] attributes do not have valid values

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

lennox.com best practices score

67

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

lennox.com SEO score

86

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 Lennox.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 Lennox.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

lennox.com

Open Graph description is not detected on the main page of Lennox. 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: