Gas Safe certified heating engineers covering Kemsing and surrounding villages. Unvented hot water cylinder installation specialists with a 5-star local reputation. Free no-obligation quotes.
We recently installed an unvented hot water cylinder for a homeowner in Kemsing — upgrading from an old vented cylinder in the airing cupboard to a modern pressurised system that delivers mains-pressure hot water to every tap and shower in the house. The difference in shower performance alone made it immediately worthwhile for the family.
Kemsing's housing stock includes a number of larger detached homes where a combi boiler isn't always the right answer — particularly where there's high simultaneous demand for hot water from multiple bathrooms. An unvented cylinder paired with a system boiler gives you the best of both worlds: mains-pressure hot water and a boiler that isn't struggling to keep up. Unvented work is specialist — it requires G3 qualification in addition to Gas Safe registration, which we hold. If you're considering an upgrade in Kemsing or the surrounding TN15 area, we're happy to advise on the right setup for your home.
From urgent boiler repairs to full central heating installations — we cover everything.
G3-qualified installation of unvented hot water cylinders for mains-pressure hot water throughout your home. Ideal for larger properties with multiple bathrooms where a combi boiler isn't suitable.
New Vaillant combi boilers from £1,800 fully installed. System-to-combi conversions and like-for-like replacements across Kemsing.
Same-day emergency callouts in Kemsing and surrounding villages. We diagnose and fix all makes and models.
Annual services from £80. Keeps your warranty valid and your boiler running efficiently. Landlord gas safety certificates available.
Local knowledge, trusted credentials, and a 5-star track record across Kent.
Gas Safe registered (938735) and F-Gas certified. All work legally compliant and fully insured.
57 Checkatrade reviews scoring 10/10, plus 31 Google reviews at 5.0. Consistently praised for clean, tidy work.
We quote before we start. No hidden charges, no surprises on the invoice.
We cover Kemsing, Otford, Sevenoaks & Borough Green and the wider Sevenoaks and Tonbridge areas.
Common questions from homeowners in Kemsing and nearby villages.
A vented cylinder relies on a cold water tank in the loft and delivers hot water at low pressure. An unvented cylinder connects directly to the mains supply, giving you high-pressure hot water at every outlet — much better for showers and homes with multiple bathrooms. Unvented systems must be installed by a G3-qualified engineer, which HeatCool is.
Yes — HeatCool is Gas Safe registered (no. 938735). You can verify this on the Gas Safe Register website. It's a legal requirement for any gas boiler work, so always ask to see the card before an engineer starts.
Yes — as well as Kemsing we cover Otford, Sevenoaks & Borough Green, Borough Green, Sevenoaks, Tonbridge and the surrounding Kent postcodes. Call us to check if we cover your exact postcode.
Unvented cylinder installation typically starts from £1,200–£1,800 depending on cylinder size and the complexity of the pipework. A new combi boiler starts from around £1,800 fully installed. We provide fixed written quotes before starting.
We offer same-day availability subject to capacity. For urgent boiler breakdowns in Kemsing, call us on 07415 078644 and we'll do our best to get to you the same day.
88 reviews across Google and Checkatrade — consistently 5 stars.
"Absolutely brilliant service. Arrived on time, explained everything clearly and left the place spotless. New boiler works perfectly. Highly recommend."
— Google Review ✓ Verified
"Very professional, tidy and knowledgeable. Sorted our boiler issue same day. Will definitely use again and would recommend to anyone."
— Checkatrade Review ✓ Verified
"Fitted a new Vaillant boiler for us. Competitive quote, clean install, no mess left behind. Really pleased with the whole job from start to finish."
— Checkatrade Review ✓ Verified