What each room needs
Room-by-room heat loss, construction and ventilation inform the design. Floor area or the old boiler’s rating alone cannot tell us the right heat pump size.
Heating & hot water · Cornwall & Devon
Heat pump installation.
Designed around your building.
We calculate how much heat the building needs and check what the radiators and pipework can deliver. That informs the heat pump, hot water and control design.
Energetika provides independent advice, design and installation from Millbrook on the Rame Peninsula. We work on domestic, commercial and agricultural projects in Cornwall and Devon, including retrofits and unusual sites. We assess the heating requirement alongside the site’s space, electrical supply and other systems.
Estimate your building’s heat loss →Compare running costs →
Tell us your postcode so we can confirm coverage before arranging a visit.
- 01 / Inputs
Ambient heat + electricity
Heat comes from the air, ground or water. Electricity runs the heat pump.
- 02 / Heat pump
Heat at a useful temperature
The design balances the building’s demand with the temperature needed by its heating system.
- 03 / Your building
Warm rooms & hot water
Radiators or underfloor heating warm the rooms. A suitable cylinder provides stored hot water.
Controls coordinate the system. Solar and batteries can contribute electricity when available; their presence does not guarantee enough power for winter heating.
The design comes first
Start with the building.
Replacing an oil, LPG or gas boiler starts with understanding the heat you need and how it will reach each room. Equipment selection follows that assessment.
Radiators, floors & pipework
We assess emitter output at the proposed water temperature and the flow the pipework needs to carry. Some radiators may stay; others may need changing.
Space, sound & electrical supply
Outdoor-unit position, sound assessment, access, condensate drainage, cylinder space and electrical capacity all shape the installation. Planning and network requirements are checked for the proposed system.
Hot water, controls & commissioning
We consider hot-water demand and control settings alongside space heating. Commissioning and a clear handover matter as much as the equipment specification.
From first enquiry to handover
Know what happens next.
What you send
Send your postcode, current heating, the work you are considering and your timing. Floor plans and recent fuel use are useful if available.
What we agree
We discuss suitability and what needs investigating, then agree the scope and any survey or design fees before proceeding.
What you review
You can assess the system design, associated works, grant assumptions and installation scope before deciding.
What we hand over
The agreed work includes setting up the system and explaining its operation. Your proposal sets out documentation, warranties and ongoing support.
Independent engineering
Choose the source that suits the site.
We are independent of manufacturers. Air source is one option; ground and water source systems need their own feasibility assessment, including available land or water access, permissions and installation cost.
For an existing building, the proposal should explain what changes, what can stay and why. For a new build, heating and hot-water design can be coordinated with the building before installation starts.
Already have a system that is not performing? →Warm Homes finance
Compare lender routes as well as rates. Confirm installer choice, full costs and funding before committing; finance through Energetika has not been confirmed.
Scheme guide & lender comparison → · Compare finance with cash →
Scheme outline and checks before committing
The government's Warm Homes Loan Scheme offers eligible homeowners a way to spread the cost of improvements such as heat pumps, solar panels and battery storage through participating lenders. Products, interest rates and terms vary, and applications are subject to lender eligibility, credit and affordability checks.
Read the official scheme guidance →
Can you keep your chosen installer?
Check this before comparing headline rates. Lenders use different application routes: some require an approved installer or a particular proposal platform. MCS certification alone does not establish access to every lender. If independent installer choice is not clearly confirmed, ask the lender before committing to work.
Compare the full installation price and total loan repayments together, including fees, any security over your home, early repayment charges and when funds are released. A lower interest rate does not by itself establish a lower overall project cost. See the official participating lender list.
Scheme information checked 1 November 2026. We are preparing information about the scheme; finance through Energetika has not been confirmed. Confirm funding before committing to work.
Before you decide
Questions worth asking.
Can a heat pump work in an older property?
Age alone is not the deciding factor. Heat loss, emitter output, available space and the desired comfort level determine what is practical and which improvements are worth making.
Will all my radiators need replacing?
Not necessarily. Each radiator’s output needs checking at the proposed design temperatures against that room’s heat loss. The survey determines which can stay.
Can I use my solar panels and battery?
They can supply some of the electricity a heat pump uses. Winter heat demand and solar generation do not necessarily coincide, and a battery has finite capacity. We assess demand, tariffs and controls together rather than assume free heating.
Does the online calculator replace a survey?
No. It is an initial estimate with stated assumptions. A design needs room-by-room heat loss, emitter checks and a site assessment.
Based in Millbrook, Cornwall
Tell us about your heating.
Start with the property and what you want to change. You do not need to choose a heat pump first.
Energetika LtdUnit 12, Gallows Park
Millbrook, Cornwall, PL11 3AX
01752 987 726
info@energetika.co.uk
Domestic, commercial and agricultural sites in Cornwall and Devon. We confirm coverage from your postcode.