Smart Thermostats in Barnstaple

Not every thermostat talks to every boiler the same way. There are two quite different ways a thermostat can control a boiler: relay (on/off), and OpenTherm modulating control.

Relay control is the standard one. The thermostat switches the boiler on when the house wants heat and off when it's got there. Every smart thermostat does it. Every boiler accepts it. It works.

OpenTherm is a communications protocol that lets the thermostat and boiler have a proper conversation. Instead of just on or off, the thermostat says what flow temperature it needs and the boiler modulates its burner to suit. That's more efficient, especially in mild weather when full output is overkill, and you get longer steady burns instead of short bursts that waste fuel.

Boilers that speak OpenTherm include the Worcester Bosch Greenstar range (most models from around 2010 on), the Vaillant ecoTEC series and the Baxi 800 series. Pair one of those with a Nest, a Tado or another OpenTherm-capable thermostat and you'll genuinely do better than relay alone.

Older boilers — anything pre-2005, and plenty of mid-range units from the less premium brands — will only do relay. That's no reason to skip a smart thermostat. Relay control with sensible scheduling and geofencing still saves you real money. You just don't get the OpenTherm bonus on top.

Combis are the easy ones: no cylinder, no separate heating circuit. System and regular boilers take a bit more thought, because there's a hot water cylinder in the mix and the programmer wiring is more involved. I do all of them regularly.

Barnstaple's housing really is a mixed bag, and the right approach depends a fair bit on what you live in.

The Victorian and Edwardian terraces in Newport, Pilton and the town centre streets around Boutport Street, North Walk and Castle Street mostly have solid walls and not much insulation. They lose heat quicker than a modern build. The feature that earns its money here is geofencing, or responsive scheduling: not heating the house when it's empty, and warming it up sensibly before you get back. Heating a leaky house that nobody's in wastes far more than doing the same in a well-insulated one. Tado's geofencing is particularly handy in these places.

The newer estates — Roundswell to the west, Whiddon Valley to the south, and the newer bits round the edges of town — hold their heat much better. There the scheduling and energy reporting matter more. You're not haemorrhaging heat, so it's about precision: the right temperature at the right time, with decent data to refine things over the winter. Nest's learning suits that kind of house nicely.

Sticklepath and Bickington are a mix of older and mid-twentieth-century housing, so the answer lands somewhere in the middle. Older boilers are more common round there, so it's worth a compatibility check before you buy anything. Ring me and I'll tell you over the phone.

Properties near the Taw in the town centre and around the Long Bridge range from Victorian terraces to converted commercial buildings. Older wiring in those sometimes means a longer installation, so budget for that if the thermostat wiring hasn't been touched in decades.

Some of the advertising for smart thermostats makes it sound like fitting one is on a par with replacing your boiler. It isn't. The realistic number, from Energy Saving Trust data, is around 10–15% off your heating bill — so for a household spending £900–£1,200 a year on gas, roughly £100–£150 back.

That assumes you're doing it the old way at the moment: a fixed timer that takes no notice of your actual life, and no control at all when you're out. If you already have a programmable thermostat and you're disciplined with it, expect the lower end. If you've been leaving the heating on all day in case you come home early, you'll do better than that.

Geofencing usually beats scheduling on its own, particularly if your routine wanders. A schedule assumes you're somewhere at a set time. Geofencing deals with the day you actually had.

Payback on a typical installation, kit and fitting together, is usually two to three years at realistic savings. After that you're just saving. That's a fair return on something that also makes the heating far less annoying to live with.

I cover all areas of Barnstaple, including:

The installation price is quoted before work begins. Travel within 25 miles of South Molton is included; beyond that radius, a £30 including-VAT travel charge applies and is disclosed before booking.

There are two parts to what you'll pay: the thermostat kit, and my time fitting it.

Kits vary by brand. Hive and Tado starter kits usually run £150–£200 depending on what's current, and the Nest Learning Thermostat is about the same. Honeywell Evohome starts around £250 for the controller on its own, with smart TRVs on top, so budget £400–£600 for a full multi-room setup. Drayton Wiser comes in cheaper at the multi-zone end.

What the fitting costs depends on your existing wiring. A straightforward combi with thermostat wiring in decent shape is quick work. Older properties, or system and regular boilers with more involved programmer setups, take longer. I'll confirm the exact installation cost before you book.

The installation price is quoted before work begins. Travel within 25 miles of South Molton is included; beyond that radius, a £30 including-VAT travel charge applies and is disclosed before booking.

You'll get an answer. Ring or message during the working day and you'll hear back the same day; evenings and weekends, it'll be the next working day. And if it isn't a job for me, I'll tell you that and point you at someone who can help, rather than going quiet on you.

When you book, I'll confirm it and give you a two-hour window rather than a whole day sat at home waiting. On the morning you get a text with a tracking link, so you can see where I've got to instead of wondering. Traffic and the job before yours are real, so it's a window rather than a promise to the minute, but if it slips you'll hear it from me first.

Call or message to book. I'll check your boiler's compatible before I confirm the appointment, so nothing goes sideways on the day.

Call: 01271 444410 Email: info@tarkaboilersbarnstaple.co.uk

The installation price is quoted before work begins. Travel within 25 miles of South Molton is included; beyond that radius, a £30 including-VAT travel charge applies and is disclosed before booking.