viessmann.de
Klimalösungen: Effizient heizen, kühlen, lüften
Last scanned Aug 4, 2026, 6:00 AM · 8 views
Overall score
Excellent
Summary
Heiz-, Kühl- und Lüftungstechnik, die Lebensräume gestaltet und das Klima schont. This website uses Google Analytics. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: robots.txt not found.
Heiz-, Kühl- und Lüftungstechnik, die Lebensräume gestaltet und das Klima schont. Entdecke ganzheitliche Lösungsangebote von Viessmann.
Top issues to fix
4 issues found
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
14 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
2 issue(s) found
Performance
724 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
+4 overall since Jul 27, 2026
- Overall
- 95
- SEO
- 90
- Security
- 90
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Klimalösungen: Effizient heizen, kühlen, lüften
- Description
- Heiz-, Kühl- und Lüftungstechnik, die Lebensräume gestaltet und das Klima schont. Entdecke ganzheitliche Lösungsangebote von Viessmann.
- Canonical
- https://www.viessmann.de/
- Language
- de-DE
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
- https://www.viessmann.de/etc.clientlibs/viessmann-corporate/clientlibs/vic.app/resources/favicons/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- viessmann.de
- Valid from
- Jul 17, 2026
- Valid to
- Oct 15, 2026
- Days until expiry
- 72
- SAN domains
- aanbod.viessmann.be, aanbod.viessmann.nl, angebot.viessmann.at, angebot.viessmann.ch, angebote.viessmann.de, assets.viessmann-climatesolutions.com, campaign.viessmann.bg, connectivity.viessmann-climatesolutions.com, developer.viessmann-climatesolutions.com, home.viessmann-climatesolutions.com, legal-policies.viessmann-climatesolutions.com, live.viessmann-climatesolutions.com, oferta.viessmann.es, oferta.viessmann.ro, offer.viessmann.ca, offer.viessmann.co.uk, offert.viessmann.se, offre.viessmann.be, offre.viessmann.ch, offre.viessmann.fr, partnerportal.viessmann-climatesolutions.com, pasiulymas.viessmann.lt, ponuda.viessmann.hr, ponudba.viessmann.si, public-sample.viessmann.ca, supplierportal.viessmann-climatesolutions.com, tilbud.viessmann.dk, viessmann.de, webstorage.viessmann-climatesolutions.com, www.heizung-sorglos-mieten.de, www.heizung.de, www.photovoltaik-sorglos-mieten.de, www.pompe-a-chaleur-intelligente.be, www.schlaue-waermepumpe.at, www.schlaue-waermepumpe.com, www.schlaue-waermepumpe.de, www.slimme-warmtepomp.be, www.slimme-warmtepomp.nl, www.viessmann-climatesolutions.com, www.viessmann-kh.com, www.viessmann-us.com, www.viessmann.ae, www.viessmann.at, www.viessmann.be, www.viessmann.bg, www.viessmann.ca, www.viessmann.ch, www.viessmann.cn, www.viessmann.co.uk, www.viessmann.com.au, www.viessmann.com.tr, www.viessmann.com.vn, www.viessmann.cz, www.viessmann.de, www.viessmann.dk, www.viessmann.ee, www.viessmann.es, www.viessmann.fi, www.viessmann.fr, www.viessmann.hk, www.viessmann.hr, www.viessmann.hu, www.viessmann.id, www.viessmann.it, www.viessmann.lt, www.viessmann.lu, www.viessmann.lv, www.viessmann.nl, www.viessmann.no, www.viessmann.pl, www.viessmann.pt, www.viessmann.ro, www.viessmann.rs, www.viessmann.se, www.viessmann.si, www.viessmann.sk, www.viessmann.ua
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyEnabled
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 1 · H2 5 · H3 24
Links
160 internal · 23 external · 14 broken
Images
24 total · 4 missing alt
Scripts / Styles
32 scripts · 1 stylesheets
JS / CSS size
5.3 KB · 704 B
Page size
237 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://viessmann.de
- Final URL
- https://www.viessmann.de/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 720 ms
- HTML size
- 237 KB
- Redirect chain
- https://viessmann.de → https://www.viessmann.de/
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Frequently asked questions
- What technology does viessmann.de use?
- viessmann.de is built with Google Analytics.
- Is viessmann.de secure (HTTPS)?
- Yes. viessmann.de uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 15, 2026.
- Who hosts viessmann.de?
- Hosting provider information for viessmann.de is not available yet.
- What is viessmann.de's SEO score?
- viessmann.de scored 90/100 for SEO in the latest analysis (excellent).
- What is viessmann.de's overall website score?
- viessmann.de has an overall SiteGraph score of 95/100, combining SEO, performance, security, and accessibility.
- Has viessmann.de's score changed over time?
- viessmann.de's overall score has improved by 4 points (from 91 to 95) since Jul 27, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card