ATAG iS System Boilers

Very well built boilers with good range of solutions to comply with boiler plus. They only sell to gas safe registered businesses and the training is brought to you which is very handy. The products are fairly priced to allow for a fair mark up. The after sales are really proactive and local reps always on hand if a problem arises.

Replaced an old back boiler with a system Atag. Excellent boiler, A rated efficiency, engineered very well. Atag Customer aftercare is second to none so more than happy to install these in the future

Fitted my first is40 this week, very impressive boiler, easy to install very fast delivery, looks very easy to service and it’s great the fact you get upto 45 days to pay your invoice for the boiler.
Slight down sides are the fact the vessel is behind the jig and the built in dials look very basic (customers comment) but I’ve just heard they’re changing that in January for much sleeker looking and easy to use interface in January.

Fitted two of the Atag boilers one heat only and one combination boiler

The Heat only i used a mains link to up the pump

Best boiler on the market by a long Long way. Great company who look after the customer and reps that come out very quickly to sort the few issues they have. Donated a boiler on a BBC DIY SOS for no gains to themselves.

Excellent boiler easy to install and setup. Only sell to gas safe engineers and the backup is excellent

Love these boilers. Easy to install and berry reliable with excellent backup if needed. Like the fact that they only sell to gas safe engineers as well

great boiler great company great back up and support from Atag have fitted a few of these love them.
Stainless steel hx
weather compensate standard
10 year warranty out of box no having to fit there filters or clocks to extend warranty

Fitted my first IS last month complete with the Atag 3 port valve kit.
So simple to install, wiring centre very simple. Easy to operate and the normally Atag quality glad to be a select partner hoping to fit more

Excellent product Been fitting lots this year goes well with the atag mag filter

Great boilers, great company. Stainless Steel heat exchanger that cleans itself.
The designers of these boilers have really took the time to think about every aspect of what goes where for easy maintenance and servicing, using Stainless steel and brass components to give us the most solid, efficient boiler on the market which is built to last.
I am happy knowing that I can supply one best boilers on the market.

Great for business, great to represent your brand.

I personally think ATAG are the best all round boiler brand, with larger brands the installer gets lost amongst figures and targets. I seem to get a more personal touch with the ATAG staff! As for the boiler i have sold a few now. And all customers seem to be very happy. Build quality is amazing!

Excellent build quality and easy to use interface. Competetively priced boiler with the option to extend warranty.

Recently fit two of these on a big house and the customer is absolutely made up, fantastic boilers with great performance

Fitted the is 40 for a customer who had a faulty keston. They commented that their house had nexer been half as warm with their previos boiler!
Really love the Atag's high quality and a reasonable price!

Fitted a few ATAGs now and I'm very impressed with the build quality of them. The heat exchanger is a market leader along with the Viessmann heat exchanger. The ease of stripping this boiler down is what drew me to them, they feel like they have been designed by a fellow engineer, not some designer in an office!

Fitted the 40kw version of this, great boiler. Not too heavy. Easy to engage on the jig. Quality brass and stainless matierials

Excellent build quality