MCS Approved Underfloor
Heating Installers
MCS certification is the UK's quality mark for renewable energy installations. If you're pairing underfloor heating with a heat pump, you need an MCS-certified installer to qualify for the Boiler Upgrade Scheme grant of up to £7,500.
What is MCS certification?
MCS — the Microgeneration Certification Scheme — is the UK government's independent quality mark for small-scale low-carbon energy technology. Established in 2007 and governed by the Department for Energy Security and Net Zero, it certifies both the products and the installers of renewable energy systems.
To become MCS certified, an installer must pass technical competency assessments, hold relevant trade qualifications, demonstrate adequate insurance, and undergo a site audit by an independent certification body. They must re-certify annually to maintain their status.
The scheme covers air source heat pumps, ground source heat pumps, solar PV, solar thermal, small-scale wind, and biomass — making it the most relevant certification for modern underfloor heating installations paired with low-carbon heating.
What MCS certification means for you
Access to government grants
Only MCS-certified installers can apply for the Boiler Upgrade Scheme (BUS) grant on your behalf — worth up to £7,500 for a qualifying heat pump.
Independently verified quality
Your installer has been assessed by an accredited certification body, not just self-declared. Their work must meet nationally recognised performance standards.
5-year workmanship warranty
All MCS installations come with a minimum 5-year workmanship warranty backed by the MCS scheme — protection you cannot get from an uncertified installer.
Correct system sizing
MCS requires installers to carry out heat loss calculations and design the system to MIS (Microgeneration Installation Standard) — critical for efficiency.
Why MCS matters for underfloor heating
Underfloor heating and heat pumps are a natural pair — and MCS certification is the link that unlocks financial support and guarantees quality.
Heat pumps + UFH = the perfect match
Heat pumps produce water at 35–50°C — lower than a gas boiler. UFH's large surface area works efficiently at these temperatures, unlike radiators. Together they achieve the highest efficiencies (COP 3.5+), meaning £1 of electricity produces £3.50+ of heat.
The BUS grant requires MCS
The Boiler Upgrade Scheme provides £7,500 for air source heat pumps and £7,500 for ground source heat pumps. Your installer must hold MCS certification and apply for the voucher before installation begins. Without MCS, the grant is unavailable.
System design matters
MCS-certified installers must calculate the heat loss for each room, design the UFH layout, and commission the system to MIS 3005 standards. This prevents the most common UFH problem — an undersized system that never gets the floor warm enough.
How to verify an MCS installer
Always confirm MCS status yourself — certificates can expire or be suspended.
- 1
Visit the MCS register
Go to mcscertified.com/find-an-installer — the official, live database of all certified installers.
- 2
Search by company name or postcode
Enter the installer's company name or postcode and select "Heat Pump" as the technology type to check their certification covers the work you need.
- 3
Check the certificate is current
A valid certificate will show the certification body, technologies covered, and expiry date. Ensure it hasn't expired and covers air source or ground source heat pumps as required.
- 4
Ask for the MCS certificate number
Legitimate MCS installers will readily provide their certificate number (format: NAP-XXXXXX). Request this before any work begins and cross-reference it on the register.
Important: The BUS grant voucher must be applied for before the heat pump is installed. Your installer applies on your behalf once survey and design are complete. You cannot claim the grant retrospectively.
MCS certified installers in our directory
36 verified installers with active MCS certification
MCS lists this installer for air source heat pump (certificate NAP-17650). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
MCS lists this installer for air source heat pump (certificate SICI-22218). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
MCS lists Rendesco for air-source, exhaust-air and water-source heat pumps (certificate NIC-4130). The MCS postcode is GL50 1JJ; Google Maps returned a postcode typo, so the MCS postcode is used here. Contact the business to confirm availability and project suitability.
Overall Google business rating, covering all services.
Theoheat is an underfloor heating supplier to merchants and plumbers across Uk. Our sister company TheoEnergy undertakes installation work of ufh, ashp and air conditioning.
Overall Google business rating, covering all services.
MCS lists this installer for air source heat pump (certificate NIC-601899). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this business for air source heat pump (MCS installer ID 9468; certificate NIC-600028).
Overall Google business rating, covering all services.
MCS lists this installer as certified for air-source heat pump installations (certificate EPP-54428). Contact them to confirm availability and project suitability. Google rating and reviews reflect the business overall.
Overall Google business rating, covering all services.
Air conditioning and heat pumps for your home and business supplied, fitted and maintained for your comfort. MCS lists this business for air source heat pump (MCS installer ID 9418; certificate NIC-6003).
Overall Google business rating, covering all services.
- Over 10 years experience - Based in Gloucestershire but serving a wider area - Whilst our main business in the installation of STIEBEL ELTRON heat pumps, we are focused on the future of sector coupling. Integrating different technologies to reduce energy consumption and offset costs of UK domestic and commercial properties. - We also install Battery Storage Systems Solar PV MVHR UNICO Underfloor heating Energy management systems Accreditations: NAPIT certification NAP-264271; TrustMark licence 1909916; MCS certified for air source heat pumps, ground/water source heat pumps, solar PV and battery storage; RECC scheme provider. Registered for the Boiler Upgrade Scheme. Regions covered: Eastern, East Midlands, London, North East, North West, South East, South West, West Midlands, Yorkshire and Humberside, Northern Ireland, Scotland and Wales. MCS lists this business for air source heat pump, water source heat pump (MCS installer ID 9157; certificate NAP-264271).
Overall Google business rating, covering all services.
MCS lists Precision Green Energy for air-source heat pumps (certificate NAP-68548). MCS contact number: 07496 680428. The Google Maps profile lists 01452 471031. Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer as certified for air-source heat pump installations (certificate NIC-601337). Contact them to confirm availability and project suitability. Google rating and reviews reflect the business overall.
Overall Google business rating, covering all services.
Installers of water-filled underfloor heating systems since 2000, specialising in self-builds, new builds and major renovations. MCS-certified installers of ground and air source heat pumps (Mitsubishi Ecodan, NIBE, Vaillant, Kensa), plus MVHR and solar thermal. UFH supplied and installed throughout the UK from their Scottish Borders base, with a 10-year all-risks guarantee.
Overall Google business rating, covering all services.
Overall Google business rating, covering all services.
MCS lists this installer for air source heat pump, exhaust air heat pump (certificate NAP-65268). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
Family-run plumbing and heating specialists serving Dunfermline, the whole of Fife and surrounding areas. MCS-certified air source heat pump installers, also covering boilers, central heating, underfloor heating and bathrooms. Trustmark and Gas Safe registered.
Overall Google business rating, covering all services.
MCS lists Forbes George for air-source heat pumps (certificate NIC-602025). MCS contact number: 07881 912134. The Google Maps profile lists 01242 350510. Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer for air source heat pump (certificate NAP-71717). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this business for air source heat pump (MCS installer ID 15688; certificate NAP-77145).
Overall Google business rating, covering all services.
Overall Google business rating, covering all services.
MCS lists this installer as certified for air-source heat pump installations (certificate APH-47607). Contact them to confirm availability and project suitability. Google rating and reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists T J Veale Construction for air-source heat pumps (certificate NAP-66696). MCS contact number: 07715 327527. The Google Maps profile lists 07889 738811. Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer for air source heat pump (certificate ELC-59023). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer for air source heat pump, exhaust air heat pump, solar air heat pump, water source heat pump (certificate NIC-1566). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer for air source heat pump, exhaust air heat pump, water source heat pump (certificate NIC-5682). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
I D Godwin is a family run business based in Cheltenham, we offer Heating / Plumbing & Gas services. The I D Godwin team works around the Gloucestershire area also offering building and construction. If you're in need of an unblocked toilet to an install of a new heating system we'll be able to help! MCS lists this business for air source heat pump, water source heat pump (MCS installer ID 12031; certificate APH-47641).
Overall Google business rating, covering all services.
MCS lists this business for air-source, exhaust-air and water-source heat pumps. Its MCS address differs from the current Google Maps profile address; confirm the correct business address when contacting them.
Overall Google business rating, covering all services.
MCS lists this business for air source heat pump (MCS installer ID 9957; certificate OFT-100292).
Overall Google business rating, covering all services.
MCS lists this installer as certified for air-source heat pump installations (certificate NAP-78402). Contact them to confirm availability and project suitability. Google rating and reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer as certified for air-source heat pump installations (certificate NAP-81053). Contact them to confirm availability and project suitability. Google rating and reviews reflect the business overall.
Overall Google business rating, covering all services.
Overall Google business rating, covering all services.
MCS lists this installer as certified for air-source heat pump installations (certificate NIC-600353). Contact them to confirm availability and project suitability. Google rating and reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer as certified for air-source heat pump installations (certificate NAP-78866). Contact them to confirm availability and project suitability. Google rating and reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer for air source heat pump, exhaust air heat pump, ground source heat pump, solar air heat pump, water source heat pump (certificate NIC-5892). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this installer for air source heat pump, water source heat pump (certificate APH-47435). Contact the business to confirm availability and project suitability. Google reviews reflect the business overall.
Overall Google business rating, covering all services.
MCS lists this business for air source heat pump (MCS installer ID 9040; certificate NIC-5854).
Complete design, installation and maintenance service for air source and ground source heat pumps with underfloor heating systems designed to work hand in hand. MCS-certified (NAPIT) and NIBE VIP installer covering the whole UK nationally from bases in South Yorkshire and Derbyshire — projects completed from County Durham to Dorset. Domestic, commercial, agricultural and horticultural.
Looking for an MCS installer near you?
Open your local area page and tick the "MCS certified" filter to see verified installers near you.
Frequently asked questions
What is MCS certification?
MCS (Microgeneration Certification Scheme) is the UK's independent quality mark for small-scale renewable energy installations. It certifies both the products used and the installers who fit them, ensuring every installation meets strict performance and safety standards set by the Department for Energy Security and Net Zero.
Do I need an MCS installer for underfloor heating?
MCS certification is not required for underfloor heating pipework alone. However, if you are pairing your UFH system with a heat pump — which is the most efficient and increasingly common combination — you must use an MCS-certified installer to qualify for the Boiler Upgrade Scheme (BUS) government grant.
What is the Boiler Upgrade Scheme grant?
The Boiler Upgrade Scheme (BUS) is a UK government grant administered by Ofgem. It provides up to £7,500 towards the cost of a qualifying air source heat pump or ground source heat pump. To receive the grant, the installation must be carried out by an MCS-certified installer.
How do I check if an installer is MCS certified?
You can verify any installer's current MCS status on the official MCS register at mcscertified.com. Simply search by company name, postcode, or technology type. A valid MCS certificate will show the company name, certificate number (e.g. NAP-XXXXXX), the technologies they are certified for, and the expiry date.
Why is MCS important for heat pump + UFH systems?
Heat pumps produce water at lower temperatures (35–50°C) than traditional boilers. Underfloor heating is ideal because its large surface area works efficiently at these lower temperatures. An MCS-certified installer has been trained to correctly size and design both the heat pump and the UFH system together, maximising efficiency and ensuring the installation qualifies for available grants.
What technologies does MCS certification cover?
MCS covers air source heat pumps, ground source heat pumps, solar photovoltaic (PV), solar thermal, small-scale wind, biomass boilers, and battery storage. For UFH pairings, the most relevant certifications are air source heat pumps (ASHP) and ground source heat pumps (GSHP).