J&S McNally specialise in boiler and central heating installation, service and repair.

Gas boiler manufacturers recommend that you have your boiler serviced once a year to keep your boiler working efficiently and more importantly safely.

An older or inefficient boiler can be wasting you money both in maintenance costs and inefficiency.

Replacing it with a new energy efficient one will:
• Reduce your heating bills
• Provide greater efficiency (A-rated boilers boast over 90% efficiency)
• Save you trouble when your old boiler breaks down
• Provide you with peace of mind and reliability

One of our fully qualified and Gas Safe engineers can either install and check a new system for you or service and maintain your existing one.

J&S McNally recommend Viessmann weather compensated boilers that efficiently run your central heating, saving you even more on your heating bills.

How weather compensation works

Weather compensation controls enable the boiler to respond to outside temperature changes and quickly adjust the radiator output. to maintain a constant temperature indoors.

• A small temperature sensor is installed on the outside of the building
• Information about the outside temperature is sent to the boiler every few seconds
• When the temperature changes outside the boiler responds and starts to increase or decrease the radiator temperature to compensate

Benefits of Weather Compensation
• A constant temperature is maintained inside, despite what the weather’s doing outside
• No more manual turning up or down of the central heating
• Can save you an additional 10% on your heating bills