Grant
- Company typePrivate
- Founded1996
- HeadquartersDevizes, United Kingdom
- Headcount501–1,000
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What Grant does
Grant UK, legally Grant Engineering (UK) Ltd, is a UK-based manufacturer and supplier of sustainable home heating systems with corporate roots tracing to Grant Engineering, founded in 1978, and the UK subsidiary established in 1996. The company designs and produces a broad portfolio spanning oil-fired condensing boilers (Vortex Pro and Vortex Eco ranges with 15kW-70kW outputs across 34 models), air source heat pumps (Aerona R32 and Aerona 290 R290 models, 4kW-17kW), hybrid heating systems (VortexAir and the EvoLink Smart Hybrid System Hub), wet underfloor heating (Uflex and Uflex MINI), aluminium radiators (Afinia), hot water cylinders (Quick Recovery 2), solar thermal collectors, and flue and accessory systems. Core proprietary technology includes the patented Vortex stainless steel heat exchanger with turbulator baffle system for latent heat recovery and fifth-generation R290 refrigerant heat pumps with a Global Warming Potential of 3 and Quiet Mark accreditation.
Grant operates a B2B2C distribution model, supplying products through UK merchants and distributors to a network of over 500 G1 Certified Installers who install and service equipment for end consumers. Revenue is generated primarily through hardware sales, supplemented by paid training courses at the Grant UK Training Academy and recurring revenue from extended warranties and ServicePlan maintenance contracts for renewable heating systems. The customer base spans UK homeowners (particularly in off-gas rural areas seeking efficient or low-carbon heating), professional heating engineers and installers, and property developers and specifiers requiring low-carbon solutions for new builds or renovations. Pricing is not publicly disclosed and is set through merchants and installer quotes, with consumers eligible for government incentives such as the Boiler Upgrade Scheme of up to £7,500.
Strategically, Grant UK is positioning for the UK transition from fossil fuel heating to renewable systems by extending an oil boiler legacy range alongside a growing heat pump and hybrid portfolio, supported by a certified installer ecosystem, professional training, and a specification hub for trade customers. Operational indicators include 501-1,000 employees, headquarters in Devizes with manufacturing at the parent company's facilities in Newcastle, County Wicklow, Ireland, MCS and KEYMARK heat pump certifications, over 35 industry awards, and active partnerships with SNIPEF, Homes for Scotland, and NESTA's Start at Home initiative.
Grant firmographics
Firmographics- Name
- Grant
- Legal name
- Grant Engineering (UK) Ltd
- Website
- https://grantuk.com
- Company type
- Private
- Founded year
- 1996
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Ownership category
- akta.pro rank
Grant industry classification
Industry- Product category
- Home Heating Equipment Manufacturing
- NAICS
- Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Power Boiler and Heat Exchanger Manufacturing (33241), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)
- SIC
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)
- akta.pro primary industry
- Heat Pumps (Air/Water/Ground Source) (IMAHAKAF)
- akta.pro secondary industries
- Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF), Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC), Heat Pump & Smart HVAC Controller Integration (HSAOANAD)
Keywords
Where Grant is headquartered
LocationHeadquarters
- HQ city
- Devizes
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Grant business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Heating Equipment Sales: Grant generates revenue through the sale of heating equipment including oil-fired boilers, air source heat pumps, hybrid systems, underfloor heating, radiators, cylinders, and accessories. Products are sold through a network of merchants and distributors to certified installers who then sell to end consumers.
- Training Services: Grant UK Training Academy offers paid training courses for heating professionals including heat pump installation, oil boiler training, solar thermal, underfloor heating, OFTEC qualifications, and CPD seminars.
- Extended Warranties and Service Plans: Extended warranty options and ServicePlan for renewable heating systems provide ongoing revenue from installed customer base.
Go-to-market motion1 record
Distribution channels4 records
Marketing channels8 records
Grant product offering
Product offeringCore offering
Grant UK manufactures and supplies home heating equipment including oil-fired condensing boilers (Vortex Pro, Vortex Eco, Vortex Boiler House), air source heat pumps (Aerona R32 and Aerona 290), hybrid heating systems (VortexAir, EvoLink), underfloor heating (Uflex), aluminium radiators (Afinia), hot water cylinders, and solar thermal systems. Products are sold through a network of merchants and distributors to G1 Certified Installers who install them in UK homes.
Product overview
Grant UK is a heating solutions manufacturer offering a comprehensive portfolio of home heating products. The core offering includes Grant Vortex Pro and Vortex Eco oil-fired condensing boilers (15kW-70kW outputs) and Grant Aerona³ R32 and Aerona 290 air source heat pumps (4kW-17kW outputs). The product range includes hybrid systems (VortexAir combining heat pump with oil boiler, and EvoLink Smart Hybrid System Hub for connecting heat pumps to existing boilers), underfloor heating (Uflex and Uflex MINI systems with 15mm-25mm profiles), hot water cylinders (Quick Recovery 2 range), aluminium radiators (Afinia), solar thermal collectors, and supporting accessories including Aerona Smart/Remote Controllers, Uflex heating controls, flues, and system components. Products are designed for both traditional fossil fuel and renewable heating applications, with the G1 Installer network providing professional installation and extended guarantees.
Differentiator
Problem solved
Functional benefit
Brands
- Vortex: Award-winning range of oil-fired condensing boilers including Vortex Pro and Vortex Eco models
- Aerona
- VortexAir
- EvoLink
- Uflex
- Afinia
- Quick Recovery 2
- WinterSol
- CombiSol
- Grant EZ-Fit Flue Systems
- G1 Scheme
- Grant TechBox
Products and services
- Grant Vortex Pro Oil Boilers High-efficiency internal and external oil-fired condensing boilers with outputs from 15kW to 70kW, featuring patented stainless steel heat exchanger and turbulator baffle system for enhanced efficiency. Available with up to 10 year guarantee when installed by a G1 Installer.
- Grant Vortex Eco Oil Boilers Competitively priced internal and external condensing oil-fired boilers with outputs ranging from 15kW to 35kW, featuring patented stainless steel heat exchanger technology and HVO biofuel compatibility.
- Grant Vortex Boiler House Oil-fired boilers designed for installation in difficult-to-access locations such as cellars or plant rooms, featuring a distinctive red powder-coated casing and outputs from 15kW to 70kW.
- Grant Aerona³ R32 Air Source Heat Pump Air-to-water heat pumps using R32 refrigerant with four models available (6kW, 10kW, 13kW, 17kW), achieving ErP ratings of A+++, high SCOP values, compact footprint, MCS and KEYMARK certified.
- Grant Aerona 290 Air Source Heat Pump Fifth generation air-to-water heat pumps using natural R290 refrigerant (propane) with Global Warming Potential of 3, available in outputs from 4kW to 15.5kW with Quiet Mark accreditation.
- Grant VortexAir Hybrid System Hybrid heating system combining the Aerona³ 17kW heat pump with a 15-26kW low NOx Vortex oil boiler, featuring an intelligent control system that switches between heat pump, oil, or combination modes.
- Grant EvoLink Smart Hybrid System Hub Compact wall-mounted unit enabling connection of Aerona³ or Aerona 290 heat pumps to existing fossil fuel boiler systems (up to 28kW), maximizing heat pump usage while providing boiler backup.
- Grant Uflex Underfloor Heating Screeded wet underfloor heating system designed for new builds and extensions, featuring unique edge insulation to minimize heat loss, with 25-year guarantee on pipework.
- Grant Uflex MINI Underfloor Heating Low profile underfloor heating system with only 15mm finished floor height, ideal for retrofit and renovation projects, featuring quick 3-day drying time with self-levelling screed.
- Grant Afinia Radiators Aluminium radiators with stylish curved design available in horizontal and vertical options, featuring excellent thermal conductivity and low water content for responsive heating.
- Grant Quick Recovery 2 Cylinders Hot water storage cylinders with fast heat-up times and excellent insulation, available in standard, slimline, and pre-plumbed models from 150L to 300L, with 25-year guarantee on shell.
- Grant Solar Thermal Systems Solar thermal collection systems including Grant Solar Collectors, WinterSol, and CombiSol for integrating renewable solar energy into home heating systems.
- Grant EZ-Fit Flue Systems Comprehensive range of flue systems for Grant Vortex oil-fired boilers including internal low/high level balanced flues, external flues, and flexible vertical options.
- Grant UK Training Academy Paid training courses for heating professionals covering heat pump installation, oil boiler training, solar thermal, underfloor heating, OFTEC qualifications, ERS qualifications, and CPD seminars.
Quantifiable outcome
- Vortex Pro Combi achieves space heating efficiencies of up to 94.5%
- +3 more outcomes
Companies that use Grant
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles3 records
Grant technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
Feature6 records
Grant partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered minor and core.
- SNIPEF (Scottish and Northern Ireland Plumbing Employers' Federation)minorGrant UK joined SNIPEF as an Affiliate member. SNIPEF represents businesses in the plumbing and heating profession and promotes high standards in the industry. As an Affiliate, Grant UK supports SNIPEF members with the supply of efficient heating solutions for their customers.
- Homes for Scotland (HFS)minorGrant UK became an Associate Member of Homes for Scotland. HFS works closely with Scottish Government and members to influence policy around new build homes in Scotland. Grant UK supports this work with a focus on low-carbon heating solutions for new build properties.
- NESTA (Start at Home Initiative)minorGrant UK participates in the Start with Grant scheme, part of NESTA's Start at Home initiative. This provides fully funded Grant air source heat pump heating systems to qualifying homeowners, supported by installer training and participation.
- G1 Certified InstallerscoreNetwork of certified heating engineers and installers who install, service, and maintain Grant products. G1 Installers receive extended guarantees (up to 10 years), access to G1 Portal and Click app, training, technical support, and scheme benefits.
Scale indicators4 records
Recent moves5 records
Expansion highlights5 records
Grant competitors and assessment
Company assessmentDirect peers
- Worcester Bosch: Worcester Bosch is a leading UK manufacturer of gas and oil-fired boilers and a growing heat pump provider. It directly competes with Grant across the Vortex oil boiler range and Aerona heat pump range, serving the same homeowner and installer channels in the UK market.
- Baxi (BDR Thermea Group): Baxi is a major UK boiler brand and heat pump provider owned by BDR Thermea. It competes head-to-head with Grant in residential heating systems, targeting the same installer trade and new-build/retrofit customer segments.
- Vaillant (UK): Vaillant is a leading European heating manufacturer with a substantial UK presence across combi boilers, system boilers, and air source heat pumps (aroTHERM). It competes directly with Grant in heat pumps and hybrid heating solutions for UK homeowners.
- Ideal Heating: Ideal Heating is a long-established UK boiler manufacturer (Logic, Vogue, Independent ranges) and a growing heat pump supplier. It serves the same trade and homeowner channels as Grant and competes on installer loyalty and specification slots.
- Alpha Heating Innovation: Alpha Heating Innovation is a UK-based manufacturer of gas and oil-fired boilers with a strong installer trade presence. It competes with Grant's Vortex oil boiler range in the off-gas and rural UK segments where oil heating remains common.
- Warmflow Engineering: Warmflow is a Northern Ireland-based manufacturer of oil-fired condensing boilers serving the UK and Irish markets. It is a direct competitor to Grant's Vortex oil boiler range, particularly in off-grid rural UK/Ireland installations.
Broad incumbents
- Daikin UK: Daikin is a global HVAC and heat pump leader with extensive UK operations spanning air conditioning, ventilation, and the Daikin Altherma heat pump range. It is a broader incumbent competing with Grant's Aerona range in the UK heat pump market with significantly larger R&D and marketing budgets.
- Mitsubishi Electric (UK): Mitsubishi Electric is a global HVAC manufacturer with the Ecodan air source heat pump range established in the UK. It competes with Grant's Aerona range in residential and light commercial heat pump segments, backed by a much larger product portfolio and marketing spend.
- Viessmann (UK): Viessmann is a German heating manufacturer with a UK presence across boilers, heat pumps (Vitocal), and commercial HVAC systems. It overlaps with Grant's full residential heating portfolio and is a direct competitor in the boiler-to-heat-pump transition segment.
Emerging players
- Navien UK: Navien is a Korean manufacturer of condensing boilers and heat pumps building its UK presence. It is an emerging competitor to Grant in residential heating, with comparable condensing technology and growing UK trade and merchant relationships.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Grant social profiles
Digital presenceGrant compliance and trust
Trust signalCompliance5 records
Grant financial estimates
Financial estimateRevenue estimate
Valuation estimate
Grant leadership team
Management profileNumber of profiles
Grant subsidiaries and ownership
Company hierarchySubsidiaries1 record
Grant funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Grant M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Grant
What does Grant do?
Grant UK manufactures and supplies home heating equipment including oil-fired condensing boilers (Vortex Pro, Vortex Eco, Vortex Boiler House), air source heat pumps (Aerona R32 and Aerona 290), hybrid heating systems (VortexAir, EvoLink), underfloor heating (Uflex), aluminium radiators (Afinia), hot water cylinders, and solar thermal systems. Products are sold through a network of merchants and distributors to G1 Certified Installers who install them in UK homes.
Is Grant a public or private company?
Grant is a private company. It is classified as family owned and is currently operating.
When was Grant founded?
Grant was founded in 1996. It employs 501 to 1,000 people.
Where is Grant based?
Grant is headquartered in Devizes, United Kingdom, in the Europe region.
How does Grant make money?
Three revenue lines are on record. Heating Equipment Sales are the primary driver. The others are training Services and extended Warranties and Service Plans.
Who are Grant's main competitors?
Direct peers on record are Worcester Bosch, Baxi (BDR Thermea Group), Vaillant (UK), Ideal Heating, Alpha Heating Innovation and Warmflow Engineering. Broad incumbents are Daikin UK, Mitsubishi Electric (UK) and Viessmann (UK). Navien UK is listed as an emerging player.
Does Grant have an API?
No public API is recorded for Grant.
What industry is Grant in?
Grant's product category is Home Heating Equipment Manufacturing. Its primary akta.pro industry code is IMAHAKAF, Heat Pumps (Air/Water/Ground Source), with a secondary code of IMADANAF, Heat Exchangers, Coils & Hydronic HVAC Components. Its NAICS code is 333415 and its SIC code is 3585.