Ready to start your air source heat pump installation? Book your free survey with LAMTANS Engineering — we will assess your property, check every grant route including the Boiler Upgrade Scheme, and confirm your options within 72 hours following your free survey.
Free survey · Grant routes checked (BUS, ECO4, Warm Homes Plan) · Typically 2–5 days on site
LAMTANS Engineering · 1023 Stockport Rd, Manchester M19 2TB · +44 161 388 2037 · lamtansengineering.com · Manchester-based, serving customers across the UK
Understanding the ASHP installation process begins with knowing how an air source heat pump works. It extracts heat from the outside air and transfers it into your home’s heating and hot water system. Because heat pumps operate at lower flow temperatures than traditional gas boilers, every installation must be carefully designed and sized to match your property’s heat demand for optimal efficiency and performance.
For this reason, a professional air source heat pump installation process always starts with a detailed assessment and system design before any installation work begins. At LAMTANS Engineering, every project is planned around a comprehensive home survey, carried out in line with MCS installation standards and delivered under PAS 2035 retrofit principles where retrofit coordination applies. This ensures your system is designed, installed and documented correctly.
Heat pumps perform best in well-insulated homes, so we also assess insulation as part of wider home energy improvements where appropriate. Still comparing heating options? Explore our complete guide to air source heat pumps.
Every air source heat pump installation follows a structured process to ensure the system is correctly designed, installed and commissioned for your property. While every home is different, these are the seven key stages LAMTANS Engineering follows for homeowners in Manchester and across the UK.
We start with a conversation about your property, your current heating system and what you want to achieve. At this stage we also check whether you may be eligible for funding support, including the Boiler Upgrade Scheme and ECO4 where applicable, so you know your options before committing to anything.
A full technical survey is the foundation of a successful installation. Our surveyor visits your home to calculate room-by-room heat loss and assess everything the system design depends on:
Using the survey results, we design a system correctly sized for your home — the heat pump output, hot water cylinder, radiator upgrades if needed, and controls. We then provide a clear written quotation with everything itemised, and talk you through the design so you understand exactly what will be installed and why. Any grant funding you qualify for is shown clearly in the quotation.
If you are eligible for support, we handle the paperwork for you. The Boiler Upgrade Scheme (BUS) currently provides a grant of up to £7,500 towards an eligible air source heat pump installation in England and Wales, subject to scheme rules and property eligibility. Depending on your circumstances, ECO4 or Warm Homes Plan support may also be available — eligibility always depends on household circumstances, property condition and scheme requirements.
Installation itself typically takes 2–5 days depending on the complexity of the system and any radiator or pipework upgrades. A typical installation involves:
Once installed, the system is fully commissioned: refrigerant and water circuits are checked, flow temperatures are set for your property, and the system is tested through its operating cycle. We then walk you through the controls, show you how to get the best from your heat pump, and hand over all documentation — commissioning records, guarantees and certification paperwork for the installation.
After installation, we remain on hand for support. Air source heat pumps need relatively little maintenance, but an annual service helps keep the system running efficiently and protects your guarantees. If anything needs attention, our Manchester-based team supports customers across the UK.
Most air source heat pump installations are completed within 2–5 days, while the entire journey — from your initial enquiry to a fully commissioned system — typically takes a few weeks, depending on property requirements, survey findings and any grant approvals.
| Stage | Typical Timescale |
|---|---|
| Initial consultation & eligibility check | Within a few days of your enquiry |
| Home survey & heat-loss assessment | Around 2–3 hours on site |
| System design & quotation | Usually within one week of the survey |
| Grant application (where applicable) | Varies by scheme; we manage the process |
| Installation | Typically 2–5 days on site |
| Commissioning & handover | Completed on the final installation day |
Every property is different, so timelines can vary. A straightforward replacement may be completed more quickly, while homes requiring radiator upgrades, pipework modifications or wider retrofit improvements may take longer. As part of your quotation, LAMTANS Engineering provides a clear project schedule, so you know what to expect at every stage.
An air source heat pump installation involves some disruption, but it is usually less than many homeowners expect. At LAMTANS Engineering, we carefully plan each project to minimise disruption while keeping your installation safe and efficient. Typically you can expect:
Short electrical power interruptions while the system is wired and connected
Access needed to the airing cupboard or plant area, loft and some floorboards for pipework runs
Some drilling and noise while units are mounted and pipework penetrations are made
Installers moving through the property — we use dust sheets and tidy up at the end of each day
The location of your air source heat pump is determined during the home survey. We assess your property’s layout, available space and installation requirements to identify the most suitable positions for both the outdoor unit and the indoor equipment, ensuring efficient performance and compliance with installation standards.
The outdoor unit is typically installed against an external wall or on a ground-level base, most commonly at the side or rear of the property. To operate efficiently, it requires:
The indoor unit and hot water cylinder are usually installed close to your existing heating system, such as in an:
Every LAMTANS Engineering heat pump installation is completed in line with MCS installation standards and delivered under PAS 2035 retrofit principles where coordinated retrofit projects apply. We are also TrustMark Registered, RECC Accredited and fully industry accredited, giving you confidence that your installation meets recognised UK quality standards. You can verify our memberships and certifications on our Accreditations page.
Meeting recognised installation standards is about more than quality. It also helps ensure:
Choosing the right installer is just as important as choosing the right heat pump. We provide a complete, design-led service — from your initial survey through to installation, commissioning and ongoing support — for homeowners in Manchester and across the UK.
Every system begins with a detailed home survey and room-by-room heat-loss assessment.
We help check eligibility and manage applications for the Boiler Upgrade Scheme (BUS), ECO4 and other available funding.
Installations are completed in line with MCS standards, with TrustMark Registration, RECC Accreditation and PAS 2035 compliance where applicable.
Local retrofit expertise with installation and support available across the UK.
Commissioning documentation, warranties and ongoing maintenance support for long-term system performance.
The on-site installation typically takes 2–5 days, depending on system complexity and whether radiators or pipework need upgrading. The full process from enquiry to commissioning is usually a few weeks.
Only for short periods during working hours. We plan the changeover so hot water is usually restored each evening, and we agree the sequence of work with you in advance.
In many cases, air source heat pumps can be installed under permitted development rights, subject to conditions on siting and noise. We assess this during your survey and advise if any permission is needed for your property.
Sometimes. Heat pumps run at lower flow temperatures, so some radiators may need upsizing to deliver the same warmth. Your heat-loss survey identifies exactly which radiators, if any, need upgrading — before you receive your quotation.
You may be eligible. The Boiler Upgrade Scheme provides up to £7,500 towards eligible air source heat pump installations in England and Wales, and ECO4 or Warm Homes Plan support may be available depending on your circumstances. We check every route for you as part of your free consultation.
Yes. We are TrustMark Registered, RECC Accredited and PAS2035 Compliant, we install in line with MCS installation standards, and we are fully industry accredited — every membership can be verified on our accreditations page.
Ready to start your air source heat pump installation? Book your free survey with LAMTANS Engineering — we will assess your property, check every grant route including the Boiler Upgrade Scheme, and confirm your options within 72 hours following your free survey.
Free survey · Grant routes checked (BUS, ECO4, Warm Homes Plan) · Typically 2–5 days on site
LAMTANS Engineering · 1023 Stockport Rd, Manchester M19 2TB · +44 161 388 2037 · lamtansengineering.com · Manchester-based, serving customers across the UK