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Security report for viessmann-climatesolutions.com

Viessmann Climate Solutions · Energy · Germany

Low risk. 3 critical or high findings in GDPR outside view and DNS health.

Security score

76/100

Risk levelLow

0–100, higher is better. How it is calculated

Viessmann Climate Solutions is a well-established global provider of efficient climate and renewable energy solutions, with a history dating back over 100 years. The company offers a comprehensive portfolio including heating, cooling, ventilation, and digital services, targeting both residential and commercial customers. The website reflects a mature digital presence with professional design, clear navigation, and multilingual support. Technically, the site uses modern technologies such as Adobe Experience Manager, Google Tag Manager, and Usercentrics for consent management, indicating a good level of digital maturity. Security posture is solid with HTTPS and consent mechanisms, though some security headers could be improved. The absence of WHOIS data for the domain is a notable anomaly that reduces trust slightly but does not outweigh the strong corporate branding and content quality. Overall, the site is professional, trustworthy, and compliant with GDPR requirements.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 100 · Medium
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

3 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  2. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Unregistered MX Record

      MX record points to unregistered domain: goidmmorclulydvjmv54b4fljstiuvtp4rpjvbmjhdxifknjm2sq.mx-verification.google.com

      What to do: Remove or fix MX record pointing to unregistered domain

      • RFC 5321 §5.1
      • NIS2 21(2)(i)
      • IR 2024/2690 12.4: Implementing Regulation (EU) 2024/2690, Annex point 12.4: Asset inventory
      • NIST CM-8: NIST SP 800-53 Rev. 5 CM-8: System Component Inventory

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Keep watching viessmann-climatesolutions.com

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
95
Security headers
80
Email security
60
DNS health
65
Network security
100
GDPR outside view
53
Average
76

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The company operates in the energy sector, focusing on climate solutions and renewable energy technologies. It is part of Carrier Global Corporation, a major player in the HVAC and energy solutions market. Viessmann Climate Solutions leverages its century-long expertise to provide integrated system solutions and digital services, positioning itself as a leader in sustainable energy technologies. The website's content and structure indicate a B2B and B2C hybrid model, with strong emphasis on innovation, sustainability, and customer engagement. The presence of multiple social media channels and comprehensive career sections suggests active brand building and talent acquisition strategies. The lack of explicit contact details on the homepage may indicate a preference for controlled communication channels or regional contact points.

Security posture

The website enforces HTTPS and uses modern consent management tools, reflecting good privacy and security awareness. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of explicit security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options is a minor gap that could be addressed to enhance protection against common web attacks. There is no publicly available security policy or incident response information, which could improve transparency and trust. No vulnerability disclosure or security.txt files were found, suggesting room for improvement in vulnerability management and communication. Overall, the security posture is good but could benefit from additional hardening and transparency measures.

Recommendations

  1. Implement and publish explicit security headers (CSP, HSTS, X-Frame-Options) to strengthen web security.
  2. Provide a publicly accessible security policy and incident response contact information to improve transparency.
  3. Establish a vulnerability disclosure program or publish a security.txt file to facilitate responsible reporting.
  4. Add clear company contact information (email, phone) on the website to enhance user trust and support.
  5. Investigate and resolve the missing WHOIS data issue to improve domain legitimacy and trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Viessmann Climate Solutions
Description
Viessmann Climate Solutions is a global leader in efficient and systemic climate and renewable energy solutions, offering integrated products, systems, digital platforms, and services to ensure reliable and comfortable heating, cooling, air, and energy supply.
Key services
Energy and heating solutions, Air conditioning, Ventilation, District heating for commercial and industrial clients, Digital services
Content quality
excellent
Branding
consistent

Technology

Stack
Adobe Helix RUM, Google Tag Manager, Usercentrics Consent Management, Piano Analytics
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management implemented
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected

Analytics and tracking

Services
Google Analytics (via GTM), Piano Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Piano Analytics
Marketing tools
Usercentrics Consent Management
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is fully accessible with rich content in German and English
  2. Strong corporate branding consistent with Viessmann Climate Solutions and Carrier Global
  3. Comprehensive navigation and legal pages present
  4. No contact emails or phone numbers explicitly listed on homepage or footer
  5. Social media presence is active and linked
  6. Modern web technologies and consent management implemented
  7. No signs of malware or phishing
  8. WHOIS data missing which is unusual and lowers trust score
Technical notes

Notes

The website is built on Adobe Experience Manager, a robust enterprise CMS, and integrates analytics and consent management tools such as Google Tag Manager, Piano Analytics, and Usercentrics. The site is well-optimized for mobile devices and accessibility, with good SEO practices including meta tags and structured data (BreadcrumbList). Performance is moderate, with lazy loading of images and asynchronous script loading. The technical stack is modern and suitable for a large enterprise, though some security best practices like security headers are missing. No hosting provider information was detected from the HTML content. Overall, the technical infrastructure supports a professional and scalable web presence.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 75/100Medium29 findingsView report
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