St AlbansMon–Sat 8:00–17:30 · 24/7 Emergency · Gas Safe Registered info@heatrite.uk07455 74863507702 52346407584 076105 About Domestic Commercial Service Areas Our WorkContact07455 748635 Request Estimate Heating controls · Smart · Wired right # Smart Thermostats & Heating Controls Hive, Nest, tado° or Honeywell, supplied, wired and commissioned by Gas Safe engineers who actually understand the heating system behind the app. Get my controls quote 07455 74863507702 523464 Installs typically completed in 2–3 hours · App set up before we leave · 12-month workmanship guarantee - Hive, Nest, tado° & Honeywell approved installs - Gas Safe registered (Co. 15149175) - Wiring centres, zoning & TRVs - Set up on your phone before we leave - Fully insured to £5m Service overview ## What thermostats & heating controls actually involves. Plain-English breakdown, so you know exactly what you're paying for, and why it matters before we set foot on site. ### What it is Supply, install and commission smart thermostats, room stats, programmers, wiring centres, zone valves and thermostatic radiator valves (TRVs) across St Albans and Hertfordshire, for combis, system boilers and unvented setups. ### Who it's for Homeowners upgrading from a 1990s programmer, anyone with cold rooms and hot rooms on the same circuit, and customers who've bought a smart stat but don't want to wire it themselves. ### When you need it Same-week slots. Most installs are 2–3 hours on site, including app setup. ### Why it matters A smart stat wired into the wrong terminals will heat your house, badly, expensively, and unpredictably. Gas Safe engineers wire to the boiler's actual control logic, not a guess. The cost of doing nothing ## What goes wrong when this is ignored. Most smart-stat regrets we hear come from a self-install or a generalist sparky who didn't understand the boiler's call-for-heat logic. ### Risks of waiting - Boiler short-cycling because the stat is wired as a simple on/off switch instead of OpenTherm - One room baking while others stay cold, no zoning, no balancing - Hot water firing 24/7 because the cylinder stat was bypassed in the wiring ### Common mistakes - Buying a stat that isn't compatible with your boiler's modulation protocol - Putting the room stat above a radiator or in direct sun, it'll never read true - Leaving every TRV on max and wondering why the bills haven't dropped Our process ## How the job actually runs. Same system every time. No improvising on your floor. - 01 ### Quick compatibility check Tell us your boiler make/model. We'll confirm what stat works best (OpenTherm vs on/off, S-plan vs Y-plan). - 02 ### Fixed quote Supply + fit, or fit-only if you've bought the kit. Priced in writing before we book. - 03 ### Install & commission Old stat / programmer out, wiring centre tidied, new controls in, system tested through a full heat cycle. - 04 ### App setup on your phone We don't leave until your app is logged in, schedules are loaded and you've used it once. What you get ## The outcomes that matter. ### Real energy savings Proper scheduling, true setback and per-room control routinely cut heating bills by 15–25%. ### Warm where you want it, when you want it Zoning + smart schedules means no more heating empty bedrooms all day. ### Boiler runs cooler and longer Modulating controls (OpenTherm) match boiler output to demand, less wear, fewer breakdowns. ### Remote control & holiday mode Heating off when you're away, warm when you land, from your phone. ### Multi-zone where it makes sense Upstairs/downstairs zones, or a separate hot water schedule on system boilers. ### Set up properly the first time Wiring centre tidied, every wire labelled, schedule explained, not 'here's the app, good luck'. In depth ## Everything worth knowing before you book. The details a salesperson skips. Skim it, or read every word, both are useful. Questions on this? Talk to a Gas Safe engineer direct. 07455 748635 07702 523464 ### Which smart thermostat is right for your boiler? Hive Active Heating is the easiest all-rounder and works with almost any boiler as a simple on/off control. Google Nest Learning gives the best schedule auto-learning but needs careful placement. tado° is the strongest for multi-room/TRV-based zoning without re-piping. Honeywell evohome is the gold standard for full multi-zone (up to 12 rooms) on a single combi or system boiler. We'll recommend based on your boiler, layout and how the house is actually used, not whatever's on offer that week. ### OpenTherm vs on/off, and why it matters Modern combis (Worcester Greenstar 8000, Vaillant ecoTEC, Ideal Vogue Max, Baxi 800) support OpenTherm, a two-way protocol that lets the stat tell the boiler exactly how hard to fire. The boiler modulates down to ~20% output instead of cycling full-on / full-off. Real-world result: quieter operation, lower flow temps, lower bills, less wear. We always wire OpenTherm where the boiler supports it. ### Zoning, TRVs and balancing A single thermostat in the hallway can't make every room comfortable. We'll typically pair a good central stat with quality TRVs (Drayton TRV4, Honeywell, or smart TRVs for full per-room control), then balance the lockshields so each radiator gets the right flow. The result is even temperatures, not 'living room 24, spare room 16'. ### Hot water programming on system boilers On system or regular boilers with a cylinder, hot water is a separate schedule from heating. We set up a sensible default (typically 6–8am and 5–9pm) and show you how to override for one-offs. Includes a Legionella cycle on unvented setups. ### What we leave you with A tidy wiring centre, every wire labelled, your app logged in on your phone (and a partner's phone if needed), schedule loaded, and a one-page summary of what each button and mode actually does. No mystery. General work gallery ## Recent Heatrite jobs that show the standard of our work. A broader look at recent installs, hot water systems, testing work and finished jobs across domestic and commercial sites. Commercial heating Installed and commissioned by Heatrite. Commercial heating Installed and commissioned by Heatrite. Boiler installation Installed and commissioned by Heatrite. Oil heating Installed and commissioned by Heatrite. Unvented cylinders Installed and commissioned by Heatrite. Hot water systems Installed and commissioned by Heatrite. Boiler installation Installed and commissioned by Heatrite. Gas testing Installed and commissioned by Heatrite. Bathroom installation Installed and commissioned by Heatrite. Unvented cylinders Installed and commissioned by Heatrite. Bathroom installation Installed and commissioned by Heatrite. Boiler installation Installed and commissioned by Heatrite. Commercial heating Installed and commissioned by Heatrite. Boiler installation Installed and commissioned by Heatrite. Commercial heating Installed and commissioned by Heatrite. Boiler installation Installed and commissioned by Heatrite. Hot water systems Installed and commissioned by Heatrite. Hot water systems Installed and commissioned by Heatrite. Oil heating Installed and commissioned by Heatrite. Unvented cylinders Installed and commissioned by Heatrite. Boiler installation Installed and commissioned by Heatrite. Unvented cylinders Installed and commissioned by Heatrite. Commercial heating Installed and commissioned by Heatrite. Commercial heating Installed and commissioned by Heatrite. Hot water systems Installed and commissioned by Heatrite. Commercial heating Installed and commissioned by Heatrite. Previous slideNext slide Frequently asked ## Straight answers, no fluff. Can't see your question? Call 07455 748635 or 07702 523464. Will a smart stat actually save me money?Yes, most homes see 15–25% off heating bills in the first full winter, mainly from proper scheduling and avoiding the 'on all day at 21°' default. The bigger the house and the more variable the occupancy, the bigger the saving. Can I keep my existing wiring? Do I need a hub? Can you zone an existing one-zone system? Will the app keep working if my internet goes down? Do you fit smart TRVs? Payment & finance ## Card, Klarna or Clearpay, pay the way that suits you. Boilers, bathrooms and larger installs can be spread over time with Klarna or Clearpay finance, just ask when you book. - ### Card payments on site We carry a card machine in the van, tap, chip & PIN or contactless on completion. ### Klarna Spread the cost of your boiler or bathroom install with flexible Klarna finance options. ### Clearpay Pay over time with Clearpay, ideal for boilers, cylinders and full bathroom fits. Ready when you are ## Book your thermostats & heating job today. Written fixed quote. Gas Safe engineer. No upsell, no pressure. Get my controls quote 07455 748635 07702 523464 Gas Safe registered 24/7 cover 5-star rated locally Related services ## Other things we look after. ← Back to homepage ### Boilers Learn more ### Power Flushing Learn more ### Bathroom Installations Learn more ### Plumbing Learn more Gas Safe heating & plumbing specialists based in London Colney, St Albans, serving homes and commercial properties across Hertfordshire & the Home Counties. Mon–Sat 8:00–17:30, with 24/7 emergency response. ### Domestic Boiler Installation & Servicing - Plumbing - Emergency Call Outs - Bathrooms - Vented & Unvented Hot Water Systems - Heating & Hot Water Controls - LPG Heating & Boilers ### Commercial - Plant Room Installation & Purging - Tightness Testing & Purging - Power Flushing - Commercial Plumbing - Commercial Heating & Gas - 24/7 Call Out - Unvented Hot Water Systems - Warm Air Heaters - Maintenance Contracts ### Company - About - Service Areas - Our Work - Reviews - Contact ### Contact - 07455 748635 - 07702 523464 - 07584 076105 - info@heatrite.uk - 17 Manor Rd, London ColneySt Albans AL2 1PN © 2026 Heatrite Plumbing & Heating Ltd. All rights reserved. Privacy PolicyCookie PolicyTerms & Conditions·Company No. 15149175 · Gas Safe Call nowRequest Estimate