From BAXI and Raypak, to Bosch and Sime, we work on all heater/boiler makes and models, old and new, with the majority of brands familiar to us listed below;

• Aira

• BAXI

• Bosch

• Cambro

• Chappee moorea

• Hamworthy

• Hendy

• Ideal

• Immergas

• Junkers

• Meridian

• Modulex

• Parsons

• Raypak

• Siddons

• Sime

• Southern

• Teledyne laars

Step 1. Change over the batteries in your thermostat.

The first thing to try is to change over the batteries in your thermostat. Most thermostats will indicate when their batteries are low and need changing though some do not, so it’s always best to try this first.

Step 2. Check that your thermostat is actually calling for heat.

The next thing to check is that your thermostat is actually calling for heat (i.e. telling the boiler to start). Most thermostats will show a flame symbol to indicate this, though whatever yours shows, check that it’s there.

Step 3. Make sure there’s power to your boiler.

These days boilers are typically plugged into a standard electrical GPO (power point). So if you cannot tell if your boiler is powered just by looking at it, for example by seeing what lights/displays may be on, then plug something else into the power point (like a phone charger) to validate that an electrical supply is present.

It’s not uncommon for a circuit breaker to trip, so if you have no power to your boiler, then find your electrical switchboard and inspect the breakers present (resetting any tripped ones if safe to do so).

Step 4. Call us!

If you get to this point, then it’s most likely you have an issue that only a professional can fix, though before you call us, please record any fault codes that may be displayed on your thermostat and/or boiler as these help us understand what it is we need to fix.

Your boiler’s temperature is linked to the design of your system and as system efficiencies and standards have changed over time, it’s not one rule to fit all.

Though typically for a new radiator panel only system, the boiler will be set to deliver water @ 80° and for a new underfloor heating only system, the boiler is set to deliver water @ 50°.

Generally speaking standard efficiency heaters convert/turn ~80% of the gas they consume (energy in) into usable heat (energy out), i.e. ~20% of energy in is wasted in the process. Whereas with condensing and modulating capabilities, high efficiency heaters convert upwards of 95% are hence much more efficient than their conventional counterparts.

In a conventional standard efficiency heater, fuel is burned and the hot gases produced pass through a heat exchanger where much of their heat is transferred to water, thus raising the water's temperature. One of the hot gases produced in the combustion process is water vapour (steam), which arises from burning the hydrogen content of the fuel.

A high efficiency (condensing) appliance extracts additional heat from the waste gases by condensing this water vapour to liquid water, thus recovering its latent heat of vaporization. A typical increase of efficiency can be as much as 10-15%. While the effectiveness of the condensing process varies depending on the temperature of the water returning to the appliance, it is always at least as efficient as a non-condensing standard efficiency alternative.

Another important attribute of high efficiency heater is its ‘Modulation Ratio’ which basically means to what ability it can ramp up or down its operation based upon demand. Typically, older and/or standard efficiency appliances either have no modulation capability (meaning they are either on i.e. running at full capacity or off) or their levels of modulation are minimal, whereas modern high efficiency appliances have greater such ratios.

In terms of pricing, high efficiency heaters are more expensive to install than their conventional standard efficiency counterparts though as they cost less to run, this additional upfront investment will be returned and realised over time.

When recognising their higher levels of energy conversion, such heaters can save much as 20% in gas consumption. However, whilst such energy savings can be achieved, unfortunately this does not mean you will save 20% on your gas bills, as many other factors need to also be considered to truly understand what your savings may be, e.g. application usage, existing appliance efficiency, heating requirements/programs, flow/return temperatures, etc.

So whilst the projected savings will depend upon your exact situation, it is safe to say that irrespective as to what they are, you will experience a saving of some degree.

There will come a time where your heater’s best days are behind it and you’ll need to upgrade it.

As we supply and install the majority of commonly available heaters on the market, we can help.

So with so many options to consider, let us assist by determining what’s best for you and at the most competitive price.