Important Information

We are an MCS certified supplier and registered with MIS 3005 schemes. Information about these schemes, along with our insurance, complaints procedure and information is included below.

MIS Scheme info

MIS 3005-D - Design of Air Source Heat Pump Systems

This ensures the correct design and specification of air source heat pump systems for optimal efficiency and performance.

MIS 3005-I - Installation of Air Source Heat Pump Systems

This sets out the requirements for the proper installation of air source heat pump systems to ensure safety and effectiveness.

MIS 3005-D - Design of Ground/Water Source Heat Pump Systems

This covers the design principles for ground and water source heat pump systems to maximise energy efficiency and reliability.

MIS 3005-I - Installation of Ground/Water Source Heat Pump Systems

This defines best practices for installing ground and water source heat pump systems to maintain high performance and compliance.

MIS Scheme info

MIS 3005-D - Design of Air Source Heat Pump Systems

This ensures the correct design and specification of air source heat pump systems for optimal efficiency and performance.

MIS 3005-D - Design of Ground/Water Source Heat Pump Systems

This covers the design principles for ground and water source heat pump systems to maximise energy efficiency and reliability.

MIS 3005-I - Installation of Air Source Heat Pump Systems

This sets out the requirements for the proper installation of air source heat pump systems to ensure safety and effectiveness.

MIS 3005-I - Installation of Ground/Water Source Heat Pump Systems

This defines best practices for installing ground and water source heat pump systems to maintain high performance and compliance.

The Trustmark Charter

The TrustMark Customer Charter outlines the rights and responsibilities of customers who receive services, products, installations, advice, or other work from a business that has the Government-endorsed TrustMark quality mark, ensuring consumer protection in home improvements and repairs.

View The Trustmark Charter here.

Approved Dispute Resolution and Consumer Code Provider

At Gretco, we adhere to the Renewable Energy Consumer Code (RECC), which is designed to ensure high standards of consumer protection within the renewable energy sector. RECC sets out strict guidelines that MCS-certified companies like ours must follow, covering everything from sales practices to contracts and after-sales service. By following this code, we demonstrate our commitment to fairness, transparency, and customer satisfaction. You can learn more about RECC and its role in protecting consumers here.

Complaints Procedure

At Gretco, we are committed to providing high-quality renewable energy solutions and excellent customer service. As part of our MCS (Microgeneration Certification Scheme) accreditation, we have a P18 MCS Complaints Procedure in place to ensure that any concerns are handled professionally, fairly, and in compliance with the Renewable Energy Consumer Code (RECC). This procedure outlines how complaints are received, reviewed, and resolved, including steps for escalation if necessary. You can view the full procedure here.

Insurance info

Insurance Provider

Commercial Express

Indemnity Limits

Employers Liability - £10 million
Public Liability - £5 million

Company info

Gretco Limited

Limited Company No - 08275471
VAT Number - 176 9263 66

Start Your Project with Gretco Today

If you’re considering installing a Stiebel Eltron Air Source or Ground Source Heat Pump, look no further than Gretco. As approved installers, we ensure that your system is installed to the highest standard, helping you save on energy costs while contributing to a greener future. Ready to begin your journey towards energy efficiency? Get in touch with us today to arrange a consultation and take the first step towards a more sustainable, eco-friendly future.