07944 105588 Mon–Fri, 7:30am–5:30pm HomeAbout Services Service Areas Our WorkContactGet a Free Quote Same-day attendance wherever possible·Free first visit and quote · No call-out fee Underfloor Heating # Underfloor Heating Installationin Harpenden, St Albans& Luton Wet underfloor heating designed, laid and balanced by the same team, from a single bathroom to whole-house systems. Free first visit, fixed written price and a 12-month guarantee. Get a Free QuoteCall 07944 105588 Same-day attendance wherever possible · 27 customer reviews rated 10/10 · 12-month guarantee - Home - /Plumbing & Heating Services - /Underfloor Heating Gas Safe registered Registration 620784 Customer reviewed 27 customer reviews Guarantee 12-month guarantee Fully insured £2 million public liability Free first visit No call-out fee, price in writing ## Recent underfloor heating work See more of our work ## Underfloor heating: what we design and install We install wet underfloor heating, warm water running through pipework laid in the floor, for extensions, renovations, new kitchens and bathrooms, and whole houses. That covers the pipe layout, the manifold, the zone actuators and room thermostats, and the connection to your boiler or heat pump. Underfloor heating works at lower water temperatures than radiators, which is why it pairs so well with modern condensing boilers and air source heat pumps. Getting the layout, pipe spacing and flow rates right at the design stage is what decides whether the floor heats evenly, so that is where we spend the time. Our customer reviews include a whole-house underfloor heating installation alongside a new combi boiler and two bathrooms. The first visit and quote are free with no call-out fee, and the price is fixed in writing before we start. ### Who it is for - ✓Extensions and open-plan kitchens where radiators would take up wall space - ✓Bathroom renovations wanting warm floors and a clear wall layout - ✓Whole-house renovations and new builds - ✓Homes moving to, or planning, an air source heat pump ### When it is needed - ✓Before screed or new flooring goes down on an extension or renovation - ✓When a room has no practical space for radiators - ✓When an existing system is being redesigned around a new boiler or heat pump - ✓When you want each room on its own thermostat ### Free quote for underfloor heating Free first visit and quote · No call-out fee. Fill this in and Craig or one of the team will come back to you. Or call us direct on 07944 105588 ## Why underfloor heating has to be right first time Once the floor is screeded and finished, the pipework is out of reach. Mistakes made at installation stay in the floor. ### Uneven heat and cold patches Wrong pipe spacing or over-long circuits leave cool areas you cannot fix without lifting the floor. ### Slow, expensive running Poor insulation under the pipes sends heat into the ground instead of the room, so the system runs longer for less comfort. ### Damaged pipework Pipes not pressure tested before screeding can hide a leak that only shows once the floor is finished. ### Controls that fight each other Badly set mixing, zoning or thermostats leave rooms too hot, too cold, or slow to respond. ### Common mistakes we are called out to undo - Skipping insulation beneath the pipework to save time or height. - Running circuits too long for the manifold and pump to serve evenly. - Screeding over pipework that has not been pressure tested. - Leaving the manifold unbalanced, so some zones get all the flow. ## How we handle underfloor heating, step by step The same sequence on every job, so you always know what happens next and what it costs before it happens. Step 1 ### Free survey We look at the rooms, floor build-up, heat source and how you use the space. No charge, no call-out fee. Step 2 ### Design and written price Zones, pipe layout, manifold position and controls set out, with a fixed written price before anything is ordered. Step 3 ### Insulation and pipework Insulation laid, pipe clipped to the design spacing and every circuit run back to the manifold. Step 4 ### Pressure test The whole system pressure tested before screed or flooring goes down, so nothing is hidden. Step 5 ### Manifold, controls and commissioning Manifold, actuators and thermostats connected to your boiler or heat pump, each zone balanced and tested. Step 6 ### Handover and guarantee Controls explained, paperwork handed over and our 12-month guarantee in place. ## What you actually get out of it ### Even, comfortable warmth Heat rises gently from the whole floor instead of one hot spot on a wall. ### Free wall space No radiators, so kitchens, bathrooms and open-plan rooms can be laid out how you want. ### Suits boilers and heat pumps Low water temperatures help condensing boilers and air source heat pumps work efficiently. ### Room-by-room control Each zone on its own thermostat, so you heat the rooms you are using. ### Gas Safe and fully insured Registration 620784, £2 million public liability and £1 million employer's liability cover. ### 12-month guarantee Backed by the team that installed it. ## Underfloor heating detail: layouts, manifolds and controls The choices below decide how well an underfloor system performs for years to come. ### Floor build-up Pipework can sit in screed for new floors and extensions, or in low-profile boards where floor height matters. Insulation under the pipe is what sends the heat up into the room. ### Pipe layout and spacing Spiral and serpentine layouts at the right spacing give an even floor temperature. Circuit lengths are kept within what the manifold can serve. ### Manifold and mixing The manifold splits flow to each circuit, with flow meters to balance them. Where the system shares a boiler with radiators, a mixing valve keeps the floor at the right temperature. ### Controls and zoning Room thermostats and zone actuators let each area run on its own schedule, with the boiler or heat pump only firing when there is demand. ### Variations of this service we carry out - Single rooms Bathrooms, kitchens and extensions added to an existing heating system. - Whole-house systems Every floor on underfloor heating, designed around one manifold or several. - Heat pump systems Underfloor heating designed to run with an air source heat pump. Not sure which applies to you? Call 07944 105588 and you will speak to an engineer. ## Related services - HeatingFull central heating systems designed, installed and balanced properly. - Boiler InstallationWorcester approved installation with a fixed written price before we start. - Heat PumpsWorcester-qualified air source heat pump installation, sized to your property.See everything on our services overview or go back to the homepage. ## Where we carry out this work Harpenden, St Albans, Luton are our core areas, and the team covers the wider counties from our base in Caddington, Luton. - Underfloor Heating in Harpenden - Underfloor Heating in St Albans - Underfloor Heating in Luton - Underfloor Heating in Dunstable - Underfloor Heating in Bedford - Underfloor Heating in Milton Keynes - Underfloor Heating in Hertfordshire - Underfloor Heating in Bedfordshire - Underfloor Heating in BuckinghamshireJust outside the list? Check our service areas or get in touch and we will tell you straight away. ## Underfloor Heating: your questions answered How much does underfloor heating cost?It depends on the floor area, the floor build-up and the controls. The survey and quote are free with no call-out fee, and you get a fixed written price. Can underfloor heating run off my existing boiler?Usually, yes. We check the boiler and system can carry the extra load and fit a mixing set where needed. Does underfloor heating work with a heat pump?Yes. Its low water temperatures suit air source heat pumps very well, and we install both. Can you do a whole house?Yes. Whole-house underfloor heating is something we have installed, including alongside a new combi boiler. Do you install electric underfloor heating?Our focus is wet underfloor heating connected to a boiler or heat pump. Ask us about your room and we will tell you honestly what suits it. Which areas do you cover?Harpenden, St Albans and Luton, plus Dunstable, Bedford, Milton Keynes and the wider Hertfordshire, Bedfordshire and Buckinghamshire area. ## Book your free underfloor heating survey Designed, laid and balanced by the same team, with a 12-month guarantee. Free first visit, no call-out fee. Get a Free QuoteCall 07944 105588 Gas Safe registration 620784 · £2 million public liability · 12-month guarantee · Mon–Fri, 7:30am–5:30pm Gas Safe registered plumbing, heating and renewables across Harpenden, St Albans and Luton. Gas Safe registration 620784 - Contact 07944 105588 - info@chobbsplumbing.com - C Hobbs Plumbing and Heating Limited118 Mancroft Rd, Caddington, LutonLU1 4EN - Mon–Fri, 7:30am–5:30pmEmergency call-outs available Services - Boiler Installation - Boiler Servicing & Certification - Underfloor Heating - Heating - Bathroom Installation - Plumbing - Power Flushing - Renewables - Heat Pumps - Gas Works Areas We Cover - Harpenden - St Albans - Luton - Dunstable - Bedford - Milton Keynes - Hertfordshire - Bedfordshire - Buckinghamshire © 2026 C Hobbs Plumbing and Heating Limited. £2 million public liability · 12-month guarantee. AboutReviewsOur WorkContactPrivacyTermsCookies Call NowFree Quote