The big heating story this week: Government publishes March 2026 heat pump deployment statistics
This week’s standout heating industry story is the Department for Energy Security and Net Zero’s official statistical release: Heat pump deployment: March 2026 (published on GOV.UK on 12 March 2026). It’s not a press release and it’s not sales material—this is the government’s formal data drop showing how many heat pumps are being installed, and how quickly the country is moving toward low-carbon heating.
If you’re a homeowner in Bordon, Whitehill, Liphook, Alton, Farnham or Haslemere, you might be thinking: “That’s national data—how does it affect my house?” In practice, these releases tend to trickle down into the things you feel directly: grant rules, installer availability, supply chain lead times, the advice you get when your boiler fails, and even how lenders and surveyors talk about heating systems during a sale.
What actually happened (and what this kind of data release usually triggers)
The government published an official update on heat pump deployment for March 2026. While the headline figure is about the pace of installations, the real impact is that this data becomes the yardstick for whether policy is “working”. When deployment is rising, the government typically doubles down on training, funding and public messaging. When it’s flat or below target, we often see a policy reaction—tweaks to schemes, more funding for outreach, changes to eligibility, or pressure on industry to reduce costs and speed up installs.
For homeowners, this means the market rarely stays still. Installers respond to demand. Merchants adjust stock. Manufacturers push new models. And if the government wants installation numbers to rise, it tends to improve how the system is sold, funded and regulated.
Why it matters: heat pumps are moving from “early adopters” to mainstream decisions
Even if you’re not planning a heat pump this year, deployment data matters because it signals where the heating market is heading. The UK’s direction of travel is clear: more homes will be heated electrically (typically by air source heat pumps), with gas boilers gradually becoming less central to long-term plans.
For areas like ours—where you’ll find a mix of newer estates (around Whitehill & Bordon), older properties and cottages (common around Farnham, Liphook and Haslemere), and plenty of homes with varied insulation quality (across Alton and surrounding villages)—the key question isn’t “will heat pumps exist?” It’s “when does it make sense for my home, and what do I need to change to make one work properly?”
The plain-English technical bit: what “heat pump deployment” really means for performance
Heat pump installation numbers are only part of the story. What matters day-to-day is whether installed systems are sized correctly and paired with a home that can run them efficiently.
A heat pump works best when it can deliver steady, lower-temperature heat for longer periods. A traditional gas boiler often runs hotter and in shorter bursts—great for blasting a cold house warm quickly, but not always the most efficient way to operate electrically.
Here are the technical factors that decide whether a heat pump will feel comfortable and cost-effective:
- Heat loss of the building: How quickly your house leaks heat through walls, roof, windows and drafts. Older homes in Farnham or Haslemere with solid walls and original details can be gorgeous—but they often need more careful planning (insulation choices, ventilation strategy, emitter sizing) than a modern well-insulated property.
- Flow temperature: This is the temperature of water circulating to radiators or underfloor heating. Heat pumps prefer lower flow temperatures. If your home needs very hot radiators to feel warm, that’s a sign improvements are needed (bigger radiators, better insulation, or both).
- Emitter sizing (radiators/UFH): Many heat pump problems are actually radiator problems. A radiator sized for a 70°C boiler system may be undersized at 45°C typical heat pump operation. It doesn’t mean you need to replace every radiator—but you do need a proper design, not guesswork.
- Controls and zoning: Heat pumps like predictable operation. “On-off-on-off” schedules can reduce efficiency. Good controls, weather compensation, and sensible room-by-room balancing matter more than people expect.
- Hot water cylinder: Most heat pump homes use a cylinder. If you’re currently combi-boiler based, this is a change. Space planning is part of the decision—especially in compact homes around Bordon and Whitehill.
So when the government reports rising deployment, it’s not just a statistic—it’s a signal that more installers, assessors and manufacturers will be active, and design standards become more important because the market is scaling up.
What it means financially: installation cost, grants, and running costs (the parts that affect your wallet)
Homeowners usually care about three financial questions:
- What will it cost to install?
- What will it cost to run?
- What happens to grants and availability?
1) Installation costs: why they vary so much
A heat pump installation isn’t one product—it’s a whole system approach. Two installations can both be “air source heat pumps” but differ massively in price due to:
- Existing heating pipework condition (older microbore layouts can be limiting)
- Whether radiators need resizing
- Electrical upgrades (consumer unit capacity, cable routes, isolators)
- Hot water cylinder installation and safe discharge pipework
- External unit location, bases, and noise planning considerations
In towns like Alton and Farnham, we often see a mix of housing types and renovation history. “It already had a new boiler” doesn’t necessarily mean “it’s ready for a heat pump.” A boiler swap is often a like-for-like change; a heat pump asks you to look at heat loss, system temperatures and controls properly.
2) Running costs: efficiency is real, but it’s not magic
Heat pumps can be very efficient. They move heat rather than create it. That efficiency is commonly measured as a coefficient of performance (COP)—roughly, how many units of heat you get for each unit of electricity you buy. But COP depends on how hard the heat pump has to work.
Practical translation: if your home is draughty, under-insulated, and needs high radiator temperatures, the heat pump will work harder and use more electricity. If you improve insulation and fit correct emitters, the heat pump can run cooler and more efficiently.
For homes around Liphook and Haslemere—where some properties are larger, older, or set back and exposed—understanding heat loss is the difference between a heat pump that feels brilliant and one that feels expensive.
3) Grants and installer availability: what the new data can influence
Deployment figures are one of the levers government uses to justify keeping, expanding or adjusting support schemes and training programmes. If installations are accelerating, you can see:
- More installers entering the market (which can help with lead times and competition)
- Better product availability (shorter waits for units and cylinders)
- Increased consumer messaging (more homeowners considering a switch)
If data shows the market is not moving fast enough, that’s when policy makers tend to experiment with ways to reduce friction: simplifying application processes, improving public awareness, or nudging building regulations and standards.
What it means locally: Bordon, Whitehill, Liphook, Alton, Farnham and Haslemere aren’t “one-size-fits-all”
National deployment numbers don’t tell you whether your street is ready. Local housing stock and local constraints matter.
Bordon & Whitehill
These areas include many homes that can be comparatively suitable for heat pumps if they’re reasonably insulated and have modern heating layouts. The practical sticking points we see locally tend to be space planning for a cylinder (if moving from a combi), external siting for the outdoor unit, and ensuring the system is designed for low flow temperatures rather than a boiler-style “high temp” approach.
Liphook
Liphook has a broad mix—from newer homes to older properties where insulation upgrades may be the priority. If your home has older radiators or partial insulation, the best money often goes into improving the building fabric and emitter sizing before expecting a heat pump to perform brilliantly.
Alton
Alton has many properties where heating systems have evolved over decades. We frequently find a patchwork: extensions added, radiators upgraded in some rooms but not others, older controls, and pipework that’s never been properly balanced. Heat pumps don’t forgive that kind of inconsistency. If you’re considering a switch, a proper survey and heat loss calculation is essential—otherwise you can end up chasing comfort issues room by room.
Farnham & Haslemere
These areas include a lot of character homes, and with character comes complexity: mixed construction, solid walls, original floors, and sometimes limited options for insulation without changing the look and feel of the building. Heat pumps can still work well, but success depends on a careful approach—often involving larger emitters, draft-proofing, considered insulation, and a design that prioritises steady heat rather than rapid bursts.
What homeowners should do next (even if you’re not buying a heat pump tomorrow)
The smartest “next step” depends on your timescale and your current heating situation.
If your boiler is healthy and you’re planning ahead
- Get a heat loss assessment mindset: Don’t start with the heat pump brand. Start with how much heat your home actually needs and at what temperatures.
- Lower your boiler flow temperature as a test: If your home stays comfortable at a lower flow temperature (for example in milder weather), that’s a good sign your radiators and insulation are heading in the right direction for a heat pump-style system.
- Improve fabric first where it’s easy: Loft insulation, draught proofing, and smart controls can improve comfort now and make any future system cheaper to run.
If your boiler is unreliable or you’re facing a costly repair
- Compare three options properly: (1) repair, (2) boiler replacement, (3) heat pump. Don’t let panic make the decision for you.
- Ask about radiator suitability: A heat pump quote without emitter checks is not a serious plan.
- Check your hot water needs: If you have a large family or multiple bathrooms (common in bigger homes around Haslemere and parts of Farnham), cylinder sizing and recovery time matter.
If you already have a heat pump (or are mid-install)
- Focus on commissioning and balancing: Many “heat pump problems” are actually setup issues—incorrect weather comp curves, poor system balancing, or misused schedules.
- Watch for comfort patterns: Cold bedrooms, noisy pipework, frequent cycling, or lukewarm radiators can all be symptoms of a design or control mismatch, not a “bad heat pump.”
The bigger picture: what to expect over the next 6–12 months
Deployment statistics are a pulse check. Either way—whether the figures show a sharp increase or slower progress—the direction is toward more low-carbon heating choices becoming normal. For homeowners, that means two practical realities:
- Good installers will be in demand: As the market grows, demand for competent design and installation rises. The best outcomes come from proper surveying, correct sizing, and thoughtful integration with your home’s existing system.
- “Boiler mindset” decisions will cause frustration: Heat pumps are not drop-in boilers. Treat them like a system upgrade (including emitters and controls), and they can deliver very comfortable, steady heat.
If you’re in Bordon, Whitehill, Liphook, Alton, Farnham or Haslemere and you want a clear, honest view of what’s best for your home—whether that’s making your current boiler more efficient, planning a future heat pump, or pricing up a full upgrade—book a visit with Embassy Gas: https://www.embassygas.com/book | (01420) 558993 | helpdesk@embassygas.com