Air Source Heat Pumps Engineered for Peak COP
All UK homeowners replacing a boiler qualify for the £7,500 Boiler Upgrade Scheme grant. No means testing, no income testing. Our engineer assesses your system and connects you with an MCS certified installer who runs sizing calculations for maximum thermodynamic performance.
Why Sizing Matters: Standard installers oversell pump capacity, causing rapid compressor cycling. Our engineer specifies the right sizing to match peak seasonal loads precisely.
Match Your Property Type to Sizing Demands
Select your property category below. We will run a heat loss simulation profile to recommended standard kilowatt outputs and outline the out of pocket costs with the £7,500 BUS grant applied.
Boiler Upgrade Scheme (BUS) Rules
Qualifying Factors
- Must own property in England or Wales
- Replacing traditional gas, oil, or LPG boiler
- No income threshold (anyone qualifies)
- No active EPC requirements (new changes)
Hometree Finance Partner Option
For the remaining net amount of £4,500, flexible monthly finance plans are available starting from approximately £65 per month with zero deposit.
Learn about payment plansEvery System is Custom Specified
Many local plumbers treat heat pumps like traditional gas boilers, running high flow temperatures and oversized pumps. This makes COP hover around 2.2, inflating electricity bills.
Keson Energy specifies room by room thermodynamic loss models. Our partner installers size pipe dimensions and calculate radiator emission surfaces precisely to target a design flow temperature of 35 degrees Celsius, keeping seasonal efficiency above 4.0 even during freezing UK winters.
Hydronic Balancing
Our partner installers balance flow rates across all manifolds to ensure radiators emit heat evenly without wasting compressor runtime.
Anti Vibration Mounts
Every compressor unit is fitted on heavy duty rubber dampers and solid concrete footings to minimise noise transfer into the building.
MCS Compliance
All installations by our certified partner network, giving you full access to smart export tariff rates and local grant schemes.
Performance Handover
You receive full engineering diagrams and flow calculation sheets showing the specification behind your home upgrade.
Check Your Heat Pump Eligibility
Qualify for the £7,500 government grant. Fill in your details and our systems engineer will run a heat loss estimate.