Featured
Air-to-air heat pump grant: the £2,500 route is live
GOV.UK now lists a £2,500 Boiler Upgrade Scheme grant for eligible air-to-air heat pumps. Here is what installers should check before quoting.
Vertex Blog
Vertex Blog
Articles, explainers, and policy updates across heat pumps, solar, heat loss, EPC, and MCS work.
MCS:2025
MCS:2025 audit cycle guide
The three-year assessment route is real, but conditional. What installers should prepare before their CB transition or renewal.
Heat pump training
Heat Training Grant review 2026
New GOV.UK review: high satisfaction with heat-pump training, but first-job quality still depends on survey evidence and clean handover.
MCS
MCS Heat Load Calculator v3.0.1 explained
The April 2026 update, why heat loss calculations may move, and what installers should check before using the result.
Solar
UK solar passes 2 million installations
March's record figures, rooftop growth, plug-in solar, batteries, new homes, and what a solar survey should check before quoting.
BUS
BUS installer guidance v5 from 28 April 2026
The current installer evidence checks: EPC position, air-to-air eligibility, supplementary heating, MCS records, heat loss and survey notes.
EPC
Energy Performance Certificate (EPC) guide
A straightforward guide to EPC checks, ratings, evidence, and the documents most often needed before survey and grant decisions.
Core guides
Guides
Reference pages for the recurring questions around surveys, evidence, and report content.
Company route
Renewable energy survey company
The broad commercial page for heat pump, solar PV, battery, EPC, and heat loss survey support for installers.
Provider checklist
Renewable survey provider checklist
What installer teams should check before choosing a survey provider for heat pump, solar PV, heat loss, EPC, or battery jobs.
Heat pump company
Heat pump survey company checklist
Report proof, heat loss scope, siting evidence, electrical checks, QA, and turnaround questions before booking.
Solar company
Solar panel survey company checklist
What a proper solar panel survey company should capture before quote, design, battery, and install decisions harden.
Heat loss company
Heat loss survey company checklist
How installers should judge measured inputs, assumptions, desktop routes, and room-by-room output quality.
Solar PV
Solar PV survey pre-design checklist
The roof, shading, access, electrical, inverter, and battery-ready evidence to capture before PV design starts.
Heat loss
How heat loss calculations work in UK homes
An explanation of the inputs, assumptions, room-by-room results, and checks that shape system sizing.
Heat loss route
Heat loss survey
The main service page for measured heat loss survey scope, pricing, desktop options, and room-by-room evidence.
Calculations
Heat loss calculations
A reference guide for the inputs, assumptions, U-values, and evidence behind defendable room-by-room calculations.
Planning
Heat pump planning permission guide
A guide to permitted development, common planning triggers, and the evidence usually needed before decisions are made.
Survey reports
What an ASHP survey report needs before design starts
A checklist of the room, electrics, emitter, cylinder, and external details that support cleaner design work.
Survey mistakes
Common survey mistakes installers make
The avoidable gaps that create quote delays, design queries, and install-day surprises.
PDF reports
PDF v2 report release
An overview of the update to the heat pump, solar survey, and heat loss report formats and download flow.
Survey report PDF
Survey report PDF
A reference page on report structure, format, and delivery across heat pump, solar survey, and heat loss work.
Heat pump report
Heat pump survey report
A reference page covering what a heat pump survey report includes and how it supports the next stage of work.
Solar
Plug-in solar vs rooftop solar
A comparison of where the products overlap, where they do not, and why rooftop design still depends on proper site evidence.
Solar route
Solar survey
The main page for solar survey scope, roof evidence, electrical checks, battery-ready context, pricing, and report deliverables.
Solar panel route
Solar panel survey
The roof, access, shading, solar PV electrical evidence, and battery-ready checklist behind a usable solar panel survey report.
Solar PV route
Solar PV survey
The PV-specific route for roof planes, inverter context, cable-route notes, battery-ready evidence, and design handover.
Solar guide
Solar panel survey guide
Installer-facing guidance on roof evidence, electrical context, and the report structure that keeps PV design moving.
Solar roof guide
Do solar panels need a roof survey?
A guide to roof evidence before solar panels, visible condition checks, access, shading, and when extra structural advice may be needed.
Heat pump route
Heat pump survey
The main page for heat pump survey scope, pricing, and deliverables.
ASHP checklist
Air source heat pump survey
Air source heat pump survey scope, terminology, and typical site requirements.
ASHP process
What happens during an air source heat pump survey?
A step-by-step guide to ASHP siting, access, sound inputs, heat loss evidence, and report handover.
ASHP siting
Air source heat pump location regulations
A plain-English look at boundary context, placement evidence, access, and siting checks before a quote is trusted.
Emitters
Radiator sizing for ASHP projects
How survey quality, room data, and visible assumptions affect emitter decisions on heat pump projects.
Air-to-air
Air-to-air heat pumps
A guide to how air-to-air systems differ from wet ASHP projects and the checks that matter before design starts.
Storage
Solar batteries guide
A guide to the checks that matter before battery storage is added to a property.
Fabric
What is a U-value and how is it calculated?
A guide to fabric assumptions, U-values, and why better evidence changes the next decision.
Fabric units
U-value units for heat loss calculations
A focused explanation of W/m2K, lower U-values, and how fabric assumptions affect room-by-room outputs.
Formula
Heat loss formula guide
A plain-English look at why fabric, room, and assumption quality matter more than formula debates.
Reference
Pricing and compliance
Pages for pricing, comparisons, certification, and the checks that influence the next step.
EPC upgrades
How to improve EPC rating
A guide to the upgrades, evidence, and preparation that usually matter most when an EPC needs to move.
EPC checks
How to check EPC rating
How to use the official registers and confirm whether a certificate is still valid.
EPC evidence
EPC evidence checklist
Documents, photos, and property details that help with EPC and RdSAP evidence capture on survey day.
Heat pumps
Air source heat pump vs air-to-air
A comparison of wet-system and air-delivery routes, focused on what this means on site and in the survey work.
MCS
What delays MCS certificate sign-off?
A look at where MCS sign-off commonly slows down and which gaps cause delays.
MCS basics
What is MCS certification?
A practical overview of what MCS means for installers and where certification starts.
Retrofit
Retrofit assessment ECO4 guide
A guide to the assessment route, evidence expectations, and why survey records need to be clear.
Platform
Vertex portal and integrations
How booking, report delivery, photos, installer teams, and portal access fit around the survey process.
Workflow
How Vertex works with installers
The normal job flow from first enquiry to checked survey report, portal access, and handover.
Electricity costs
Cost of electricity in UK
Current electricity-cost benchmarks and why they still affect storage, heat pump, and usage decisions.
Survey pricing
Heat pump survey cost
Current heat pump survey pricing and the factors that move the final quote.
Solar pricing
Solar survey cost
Current solar survey pricing, what moves the final quote, and what the base rate covers.
Survey pricing
How much does a survey cost?
A side-by-side view of public rates for heat pump, solar survey, and heat loss work.
Heat pump bills
Air source heat pump running costs UK
Current guidance on ASHP running costs and the main factors that change the real bill.
Battery cost
Solar battery cost UK
Typical battery-cost ranges for domestic systems once real installation conditions are taken into account.
Air-to-air cost
Air to air heat pumps cost UK
Current cost benchmarks, the grant route, and the site conditions that most often move the installed price.
Updates
Policy and standards
Dated pages covering grants, official guidance, and technical standards.
Heat pump training
Heat Training Grant review 2026
What GOV.UK's June review means for trained engineers moving from course completion into live heat pump jobs.
MCS:2025
MCS:2025 audit cycle guide for installers
How reduced, standard, and enhanced assessment frequency work under the redeveloped installer scheme.
MCS renewal
MCS:2025 installer renewal checklist
A practical pre-renewal check for job files, Technical Supervisor records, complaints, handover and survey evidence.
Air-to-air grant
Air-to-air heat pump grant 2026
The live £2,500 BUS route, what it changes for quotes, and the survey evidence installers should capture before promising a job.
Installer checklist
Air-to-air grant checklist for installers
A practical quoting checklist for eligibility, customer wording, room evidence, outdoor siting, electrical checks and office handover.
Air conditioning grant
Air conditioning grant UK 2026
A careful explanation for customers searching for an air conditioning grant, and how it relates to eligible air-to-air heat pumps.
Warm Homes Local Grant
Warm Homes Local Grant 2026
Free solar panels, air source heat pumps, EPC D-G eligibility, income rules, council survey steps, and installer evidence checks.
MCS heat load
MCS Heat Load Calculator v3.0.1 explained
The April 2026 update, design temperatures, U-values, airtightness, room inputs, and why heat loss calculations may change.
Solar
UK solar passes 2 million installations
The March 2026 deployment record, rooftop growth, batteries, plug-in solar, new homes, and the survey evidence that matters before quoting.
Electricity reform
Why UK electricity prices still follow gas and what the 2026 reform could change
What the 21 April 2026 announcement changes, what it does not change yet, and why it matters for heat pumps, solar, and bill comparisons.
BUS
BUS grant changes overview
An overview of Boiler Upgrade Scheme eligibility, process changes, and the related grant pages on the site.
BUS
BUS installer guidance v5 from 28 April 2026
A practical installer summary of EPC changes, air-to-air eligibility, supplementary heating, MCS evidence, and what still matters in the survey and quoting process.
EPC
Do you still need an EPC for a heat pump grant in 2026?
A short explainer on what the BUS guidance update changes at application stage and what evidence still needs checking.
RdSAP 10
RdSAP 10 evidence requirements
What changed in evidence expectations and which supporting documents are now more important.
MCS 020(a)
MCS 020(a) sound calculations
An overview of the current sound rules and the checks that matter before permitted development is assumed.
ASHP requirements
ASHP survey requirements 2026
The current installer evidence checks around siting, heat loss, photos, records, and survey handover.
Future Homes Standard
Future Homes Standard: heat pumps and solar
What is confirmed for new-build heating and generation, and what it signals for retrofit by comparison.
Warm Homes Plan
Warm Homes Plan 2026
A summary of the plan, its funding routes, and what it means for homeowners, installers, and landlords.
Archive
Archive
Older updates kept available for reference.
Archive note
BUS statistics update
A dated snapshot retained for reference alongside the current BUS pages.
Archive note
Record clean power auction
A dated policy snapshot kept available for context.
Archive note
Public sector clean energy fund
A focused funding update kept available as background reference.