Many Birmingham apartments, particularly in the city centre and the Jewellery Quarter, have no gas and get their hot water from an electric thermal store such as the Gledhill PulsaCoil. When one stops giving hot water, we find the cause and repair it. In office hours (Monday to Friday, 8am to 5.30pm) £99 covers the visit, the diagnosis and the first hour, and parts are priced before we fit them. We are an independent heating company, not Gledhill and not its service agent.
Four details and we will get back to you to arrange a time. Prefer to talk? Call 07413 385767.
Repairs £99 in office hours: attendance, diagnosis and the first hour. Annual service £120 (£90 when bundled with another boiler or cylinder service).
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked. Full price list
Smell gas now? Do not use this form or wait for a reply. Call the National Gas Emergency Service free on 0800 111 999 (24 hours). If you are using a mobile, make the call from outside. Open doors and windows, do not switch electrics on or off, do not smoke or use naked flames, and turn the gas off at the meter if it is safe to do so, unless the meter is in a cellar or basement. Once the supply has been made safe, we can trace and repair the fault.
A PulsaCoil is a thermal store. Immersion heaters heat a tank of water, usually overnight on a cheaper tariff, and that water stays in the tank. When you open a hot tap, cold mains water passes through a heat exchanger, picks up heat from the stored water and comes out hot at mains pressure. The water you wash in never sits in the tank.
That makes it a different appliance from an unvented cylinder such as a Megaflo, even though both are tall white units in a cupboard, and it needs a different approach to fault finding. It also has parts a cylinder does not have: a pump, a heat exchanger, sensors and a control board.
A cause can only be confirmed by testing on site, so read this as a guide to what an engineer will check, not as a diagnosis.
Either the store is cold, or it is hot and the heat is not reaching the tap. A cold store points to the immersion heaters, their thermostats, the supply or the timer. A hot store with cold taps points to the pump, a sensor or the control board. We have attended one PulsaCoil where the pump had failed and needed replacing, and another where the supply had tripped at the consumer unit and the unit ran normally once it was reset and tested.
Often only one of the immersion heaters is working, so the store never fully heats, or the overnight supply or timer is not switching on. A worn mixing valve can also limit the temperature at the tap.
Later models show faults with lights or a code on the front panel. Photograph what it shows and send it to us, or tell us when you call.
Usually an immersion heater that is breaking down. Leave the unit switched off and have it tested.
If the water level in the store drops, the unit can become noisy and stop heating properly, and a leak may be the reason. Please do not open the casing or top it up yourself.
Parts for older models are not always available. We check before we order anything, and we tell you if replacing the unit is the better route.
Outside office hours the price is quoted by phone before we set off. There is no travel charge within 10 miles of B20 2JS.
In most cases it can be repaired: immersion heaters, pumps, sensors and control boards are all replaceable parts. Replacement is worth considering when the store itself is leaking, when parts for an old model can no longer be had, or when the unit has needed repair after repair.
When a store is beyond economic repair there are two routes: a like-for-like thermal store or, where the flat suits it, a conversion to an unvented cylinder. Unvented work needs the G3 qualification, which our lead engineer holds. Both are quoted in writing after a survey.
Most PulsaCoils are in rented or leasehold flats. If you are a tenant, speak to your landlord or managing agent first. We take bookings from tenants, landlords and agents: see our landlords page.
Synergy Gas & Plumbing is a family-run Birmingham business, trading since 2017 and led by Saeed Iqbal, an engineer with more than 20 years' experience, including ten years with British Gas (2006 to 2016). The company is Gas Safe registered, number 594385, and Saeed holds the G3 qualification for unvented hot water systems.
No gas is involved, so Gas Safe registration is not what qualifies anyone to repair a thermal store, and it is not an electrical qualification. We are an independent heating company: we are not approved or appointed by Gledhill. If testing shows that the fault is in the fixed wiring of the flat or in the consumer unit, and not in the unit itself, we will tell you, and that part is a job for a registered electrician.
We have not photographed a PulsaCoil repair for the site yet, so there is no PulsaCoil case study to show. These two are electric hot water and heating repairs in city flats.
A tenant called with no hot water and asked for both immersion elements to be replaced. We drained the cylinder down, took out two scaled and corroded elements, fitted new ones and tested them. Hot water back the same visit.
Read the case studyOverheat light flashing and low pressure. We topped it up, tightened a loose automatic air vent that started leaking, and tested the heating.
Read the case studyPlease do not take the covers off yourself: these are mains electrical appliances holding very hot water.
| Job | Price |
|---|---|
| Thermal store repair (for example a Gledhill PulsaCoil), Mon–Fri 8am–5.30pm: diagnosis + first hour | £99 |
| Repair, outside office hours | Call for a quote |
| Replacement thermal store, or conversion to an unvented cylinder | Quoted after survey |
The £99 is a fixed charge for attendance, diagnosis and the first hour of a repair in office hours (Mon–Fri 8am–5.30pm), not the price of every job. Parts and further work are quoted and agreed before we carry on, out-of-hours work is quoted by phone before we set off, and replacements are priced in writing after a free survey. No travel charge within 10 miles of B20 2JS; further out, £2 per mile may apply, agreed before booking. How our prices work.
Diagnosis + first hour £99
£99 covers diagnosis and the first hour of a thermal store repair in office hours (Mon–Fri 8am–5.30pm). Parts and further work are quoted first. Out of hours, call for a quote.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked.
Yes, in most cases. Immersion heaters, thermostats, pumps, sensors and control boards are replaceable parts. Replacement is worth considering when the store itself is leaking, when parts for an old model are no longer available, or when the unit has needed repeated repairs. We test first and tell you which applies.
Either the store is cold or the heat is not reaching the tap. A cold store points to the immersion heaters, their thermostats, the supply or the timer. A hot store with cold taps points to the pump, a sensor or the control board. It takes testing to tell which, so it cannot be diagnosed over the phone.
In office hours (Monday to Friday, 8am to 5.30pm) £99 covers the visit, the diagnosis and the first hour. Parts and any further time are priced and agreed before we carry on. Outside those hours, call us for a quote before we set off.
No. A PulsaCoil is a thermal store: the water in its tank stays there and heats mains water as it passes through a heat exchanger. An unvented cylinder such as a Megaflo stores the hot water you actually use, under mains pressure. They have different parts and different faults.
Only if the flat suits it. A conversion needs a survey, and the work must be done by an engineer who holds the G3 qualification. A like-for-like thermal store is the other route. We quote for either in writing after a survey.
No. We are an independent heating company. We repair PulsaCoils and other electric thermal stores, but we are not Gledhill and are not approved or appointed by them.
No. There is no gas in a PulsaCoil, so Gas Safe registration does not apply, and it is not an electrical qualification either. Choose an engineer who repairs electric hot water systems.
We cover Birmingham and the surrounding towns. Pick your area for local detail.
£99 diagnosis in office hours; repair quoted
£99 in office hours: diagnosis + first hour
Annual service £120
Unvented: £99 first hour in office hours. Vented or immersion: quoted after a £99 diagnosis
£120 annual service
£99 (Mon–Fri 8am–5.30pm)
We will tell you honestly when we can get to you, and agree the price before any work goes ahead.
