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01 · Ask
Heat pump, solar, battery or all?
Different priorities, different ROI. Describe the house, the bills and the budget — the AI tells you what stacks up.
Install a heat pump in Victorian home.
Heat pumps work in old houses — but need bigger radiators and good insulation. Survey + plan first.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
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Hire a renewables installer. MCS or no grant.
Read the brief on MCS, BUS grants, heat-loss surveys and right-sizing — then let Three local installers quote.
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02 · Read the brief
Walk in informed
BUS £7,500 heat pump grant, SEG export tariffs, MCS certification, EPC requirements, radiator upgrades. Know the rules.
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03 · Compare
Compare 3 installer quotes
Three local installers quote on the same spec — heat-loss, sizing, grants, warranty — so the cheapest isn't accidentally the unfunded.
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Top tips
Hiring a renewable energy, without the regret.
Four moves that separate a smooth job from a nightmare.
Use MCS-certified installers only.
BUS, ECO4, SEG payments all require MCS-certified installation. Any installer without MCS means no grants and no SEG export tariff.
Get a heat-loss survey for heat pumps.
Heat pumps must be properly sized to your house heat loss. Insist on a Heat Loss Calculation (MCS-recognised) — never a 'kW per m²' shortcut.
Check radiator compatibility.
Heat pumps run at lower flow temps (35–55°C vs 70°C for gas). Most existing rads are undersized. Cost: £200–£500 per upgraded rad — get this on the quote.
Don't oversize solar PV.
Generation beyond what you export earns 5–15p/kWh (SEG). Generation you use saves 30p+. Right-sized to consumption beats massive arrays for ROI.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Air source heat pump (install)Pre-grant
£8k–£14k
Ground source heat pump
£18k–£35k
Solar PV 4kW system
£6k–£9k
Battery storage (5kWh)
£3.5k–£6.5k
Solar thermal (hot water)
£4k–£7.5k
EV charger (Type 2, 7kW)
£800–£1.5k
!
Quote spread is typically ± 18% — always get 3 quotes.
At a glance
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Renewable Energy explained
Heat pumps in Victorian and Edwardian UK homes — feasible with right approach. Solid walls, draughty windows, traditional radiators add complexity. Higher cost but achievable. Expect to pay £15,000–£30,000 for UK period property heat pump retrofit (including insulation).
What Does the Work Involve?
Heat loss assessment likely higher than modern home. Fabric improvements first (loft, secondary glazing, draught-proofing, suspended floor insulation). MCS heat pump sized for higher heat loss. Larger radiators or underfloor heating where feasible. ASHP outdoor unit positioning sensitive in period setting.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Pre-retrofit insulation package | 3,000 | 15,000 | Loft + floor + secondary glazing |
| ASHP system Victorian-sized | 14,000 | 22,000 | Larger kW |
| BUS grant | -7,500 | -7,500 | Standard |
| Radiator upgrades (extensive) | 2,000 | 6,000 | All rooms |
| UFH ground floor | 3,000 | 10,000 | If suspended floor |
| Listed building consent (if listed) | 500 | 2,500 | Pre-application |
| Total Victorian retrofit | 15,000 | 30,000+ | Includes insulation |
UK Regulations
Listed building consent for material changes. Conservation area Article 4 restrictions. Permitted Development for ASHP outdoor unit (size and position). Building Regs Part L for fabric upgrades.
Frequently Asked Questions
Feasible in solid-wall Victorian?
Yes — with fabric improvements first. Internal wall insulation or external (if not listed).
Listed building OK?
Possible — outdoor unit position critical. Consent for visible changes. Conservation officer pre-app.
Original cast-iron radiators?
Often heritage feature. Some retain, some upgrade. Specialist advice.
How long install?
3-7 days heat pump install. Insulation works separate, weeks.
Running cost realistic?
Annual £1,200-£2,500 typical Victorian home post-retrofit. Vs £2,000-£4,000 pre.
Best for period properties?
Specialist heritage heat pump installers. SPAB-aware. Examples available.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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