rentechboilers.com website review

24 files block the first paint until they finish downloading. Deferring or inlining them could save about 3.6 s.

About 223 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.0 s faster on a phone.

Your mobile performance score is 58 (desktop: 82). Pages that score under 90 lose visitors before the first paint.

About 71 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 450 ms faster on a phone.

Google Tag Manager costs a phone 221 ms of main-thread work and 326 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

A phone's processor spends 2.3 s on main-thread work while loading, 848 ms of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

3 third-party services load with your homepage (Google Tag Manager, Google Analytics and Google Fonts), adding 440 KiB and 248 ms of main-thread time.

2 images could be 65 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen. Google estimates it would make the page about 150 ms faster on a phone.

1 file is served with short cache lifetimes, so returning visitors download them again (16 KiB).

3 long tasks block the main thread while loading, the longest for 158 ms. During a long task the page ignores taps.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 50 ms).

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Your largest element takes 13.1 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the image.

The first text or image appears after 5.3 s on a phone. Good is under 1.8 s.

The page becomes fully interactive after 13.4 s. Good is under 3.8 s.

Visually, the page fills in at 6.5 s (Speed Index). Good is under 3.4 s.

Real visitors see the first content after 1.8 s (75th percentile). Good is under 1.8 s.

Real visitors wait 1.2 s for your server to start answering (75th percentile). Good is under 800 ms.

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' tap response (inp) went from 137 ms to 165 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Over the last 25 four-week periods to 2026-10-17, real Chrome visitors' largest content (lcp) went from 2.1 s to 2.4 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 6.0 MB in 73 requests on a phone: images 4.9 MB (9), scripts 692 KiB (27) and fonts 338 KiB (7). Under 2 MB keeps phones on slow connections fast.

A070036_CROP_FNL_web_2-768x454.jpg is on the first screen but marked loading="lazy", so the browser waits before fetching it and the page looks finished later. Load it eagerly (and give it fetchpriority="high" if it is the main image).

1 image (106 KiB) is JPEG, PNG or GIF. The same pictures as WebP or AVIF are usually much smaller at the same quality, and every current browser shows them.

By the Sustainable Web Design model, a visit to your homepage emits about 1.71 g of CO₂e: 205.6 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

1 element use ARIA attributes their role does not allow, which confuses screen readers.

22 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

3 tap targets are too small or too close together to hit reliably with a finger.

All page content should be contained by landmarks: 13 elements on the page fail this check, rated moderate by axe-core.

1 visible link has no text or label, so screen readers cannot say where it goes.

No meta description, so Google writes its own snippet from whatever text it finds.

There is no <h1>, so neither visitors nor Google get a clear main headline.

Your title is only 14 characters: “Home - Rentech”. Between 30 and 65 characters leaves room to say what you do and for whom.

10 links use generic text like “click here” or “learn more”, which tells Google nothing about the page behind them.

1 link has no real href, so search engines can't follow it.

The homepage links to 69 pages on rentechboilers.com and 3 external pages.

Your Organization JSON-LD is missing sameAs (social profiles), description and contact details. These are the facts AI assistants use to describe a business and to tell it apart from others with a similar name.

There is no https://rentechboilers.com/llms.txt, a short Markdown guide to your key pages for AI tools (llmstxt.org). It is optional and few AI tools read it yet, so treat it as a cheap extra.

https://rentechboilers.com/industries, https://rentechboilers.com/applications, https://rentechboilers.com/fire-packaged-water-tube-boilers, https://rentechboilers.com/hrsg-boilers, https://rentechboilers.com/waste-heat-boilers and https://rentechboilers.com/economizers and 9 others have no meta description, so Google writes the search snippet from whatever text it finds.

https://rentechboilers.com/industries, https://rentechboilers.com/applications, https://rentechboilers.com/fire-packaged-water-tube-boilers, https://rentechboilers.com/hrsg-boilers, https://rentechboilers.com/waste-heat-boilers and https://rentechboilers.com/economizers and 9 others have no <h1> headline, so visitors and search engines get no clear main topic.

https://rentechboilers.com/ad-archive, https://rentechboilers.com/facilities and https://rentechboilers.com/events took over 3 s to send their HTML from our server.

We fetched 15 pages linked from your homepage (of 21 found) and read each the way a search engine does.

5 of 21 tappable elements near the top of the page are smaller than 24 px, hard to hit with a thumb.

1 image is served at too low a resolution for sharp phone screens.

No testimonials, customer logos, ratings or customer counts on the homepage: nothing tells a new visitor that others already trust you.

Your homepage shows a street address but no LocalBusiness JSON-LD, so Google and AI assistants have to guess your address, hours and phone from the page text.

The homepage shows no opening hours. If customers visit or call, show when.

There is no form on the homepage, so every lead has to click through to another page first.

There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 259 words of visible text.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics and Google Tag Manager (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 4 cookies (measured from a US location before any click).

No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

Loading the homepage contacts 6 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.