Darlington & North YorkshireOpen 8am–8pm, 7 days info@greencoresolutions.co.uk07414 209357 Services Service Areas AboutOur WorkReviewsContact07414 209357Request Estimate About Greencore Solutions LTD # 30 years of heating engineering,delivered by one accountable team. Greencore is a Darlington-based Gas-Safe and HETAS-registered, with MCS installs delivered via accredited partner installer. We replace boilers in a day, design heat pumps that actually deliver their MCS performance figures, and project-manage full bathroom and wet-room refits from start to finish. Request a Fixed-Price Quote 07414 209357 Gas-Safe registered (No. 214402) · MCS · HETAS · Fully insured (£5m public liability) 30+ yrs On the tools 1,000s Boilers & bathrooms delivered <60 min Typical booking window in DL postcodes Darlington Local base, regional reach Our story ## Built on three decades of finishing the job properly Greencore Solutions LTD was founded by Stephen Airey, a time-served heating engineer who has spent more than thirty years in customers' homes across Darlington, Teesside, County Durham and North Yorkshire. The business exists because too many homeowners had told the same story: a national installer quotes cheap, fits in a rush, and disappears the day the invoice clears. We help homeowners and landlords who want their next install to be their last problem for a decade. That means we specialise in A-rated boiler installations, MCS-grade (via partner) air source heat pumps via our accredited MCS partner, full bathroom and wet-room refits, HETAS-registered stoves, underfloor heating and renewables — all delivered by the same in-house team that quoted the job. We cover Darlington, Middlesbrough, Stockton-on-Tees, Durham City, Hartlepool, Sunderland, Richmond, Northallerton and the wider North Yorkshire area. We're small enough that the engineer who commissions your system is the engineer who quoted it, and big enough to handle full property refits and heat-pump conversions. Mission & standards ## How we work — and what we guarantee Our standards aren't a marketing page — they're the reason we still get phone calls from customers whose first boiler we fitted twenty years ago. ### Fixed prices, no day-of-fit surprises Every quote is itemised, written and valid for 30 days. Anything we spot at survey is priced upfront — the number on the invoice matches the number on the quote. ### Manufacturer-grade install standard Worcester, Vaillant, Ideal, Daikin and Mitsubishi accredited. We register your warranty on commissioning so the 10–12 year cover is live before we leave site. ### One accountable engineer The engineer who quoted your job is the engineer who commissions it. ### 12-month workmanship guarantee On top of the manufacturer's warranty. If our workmanship fails inside 12 months we come back and fix it — no quibble. ### Clean, considerate working practice Dust sheets down, shoes off, tools tidied at the end of every day. We work in people's homes and we treat them accordingly. ### Honest fit, even when it costs us the job If your property fabric won't support a heat pump, we'll say so. If a repair is the right call instead of a replacement, we'll quote that. We'd rather lose the quote than mis-sell the install. Measurable proof ## The numbers behind the work 30+ Years' on-the-tools heating engineering experience 1,000s Boilers, bathrooms and renewables delivered <60 min Typical Darlington booking window 12 mo Workmanship guarantee on every install 10–12 yr Manufacturer warranty registered on commissioning £7,500 Open 8am–8pm, 7 days Gas Safe Registered (No. 214402) MCS + HETAS Renewables and solid-fuel certified ## Ready for a fixed-price quote on your project? Survey booked inside the week. Fixed written quote inside 48 hours. No call-centres, no sales pressure. Request Fixed-Price Quote 07414 209357 Gas-Safe heating, renewables and bathroom specialists for homes across Darlington & North Yorkshire. 30 years on the tools. 07414 209357 07789 505532 info@greencoresolutionsltd.co.uk11 Chelsea Court, Marlborough Drive,Darlington, DL1 5YE Services - Boiler Installation & Servicing - Air Source Heat Pumps - Gas Safety Inspections - Underfloor Heating - Bathroom Installation - Renewables Installer Service Areas - Heating engineer Darlington - Boiler installer Middlesbrough - Heating engineer Stockton-on-Tees - Gas Safe engineer Durham City - Heating engineer Hartlepool - All North Yorkshire service areas Company - All services - Our work gallery - Customer reviews - About Greencore - Contact us - Privacy policy - Cookie policy - Terms & conditions Looking for a trusted Gas-Safe boiler installer in Darlington, an MCS air source heat pump installer in North Yorkshire or a complete bathroom fitter in Teesside? Greencore Solutions LTD covers the whole region from a single accountable engineer. © 2026 Greencore Solutions LTD. All rights reserved.Gas Safe Registered·HETAS Registered·MCS Renewables Call now Request Estimate