Heating, Cooling & Renewables Advice

Clear, practical guidance to help you understand your home's heating and cooling options, recognise common problems and make more informed decisions about installation and maintenance.

26 June 2019 | Boilers

Leaking Boiler

Don’t ignore a leaking boiler. What to do if you spot a leak, and the causes we look for: pressure, temperature, seals, corrosion and wear and tear.

19 June 2019 | Boilers

Radiator Cold Spots: What Are They?

Cold at the top or the bottom? What radiator cold spots mean, how to bleed out trapped air, and when sludge calls for a Powerflush.

8 March 2019 | Boilers

The Different Types of Boiler

Combi, system or conventional? The advantages and drawbacks of the three main types of boiler, and which kind of home each one suits best.

27 January 2019 | Boilers

How to Fix and Prevent a Frozen Condensate Pipe

Snow and ice can freeze your boiler’s condensate pipe. How to tell if it’s frozen, safe ways to defrost it, and how to stop it happening again.

19 February 2018 | Boilers

What Is Boiler Benchmark?

What is the Benchmark book that comes with your new boiler? How it records your boiler’s installation readings and services, and keeps your warranty valid.

1 February 2018 | Boilers

5 Reasons You Should Get Your Boiler Serviced Every Year

Why get your boiler serviced every 12 months? Five reasons: saving lives, lower fuel bills, cheaper repairs, a valid warranty and staying legal.

Delta Flow heating, cooling and renewables advice

8 February 2017 | Boilers

What Is a Combi Boiler?

What is a combi boiler? How combination boilers heat water on demand without a hot water cylinder, their advantages, and the one real disadvantage.

29 November 2016 | Advice

10 Ways to Keep Your Property Warm This Winter

10 ways to keep your property warm this winter, from insulating your pipes and hot water tank to draught excluders, heavy curtains and a new boiler.

13 December 2015 | Boilers

Boiler Breakdowns: 5 Top Tips to Prevent Them

5 top tips to prevent boiler breakdowns: get a power-flush, service annually, run your heating in summer, bleed your radiators and prevent frozen pipes.

8 December 2015 | Boilers

Noisy Central Heating

Banging, tapping, gurgling or humming? What the most common central heating noises mean, from trapped air and limescale to badly fitted pipes.

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