The pros and cons of combination boilers

Date published: 4th March 2013

Combination boilers (or combi boilers as they’re commonly known) are extremely efficient and popular throughout local households in Plymouth.

They are referred to as ‘combi’ systems because they can heat your water and act as your property’s central heating unit too.

The pros

Most people opt for a combination boiler because of convenience. You can get hot water on demand so you don’t have to hang around waiting for your shower or bath. They are also great space savers: you don’t need any hot water tanks, and a combi boiler can be fitted neatly onto the wall or hidden away in a cupboard.

Fluctuating water temperatures are no longer a problem as soon as you have a combi boiler fitted. They come fitted with controls as standard so you can decide how hot you want your on-demand water.

Of course the main benefit of a combi boiler is that they can help homeowners to slash their heating bills by hundreds of pounds every year. Most systems can achieve savings of up to £300 per year.

Finally, a combi boiler can have a positive effect on your property’s Energy Performance Certificate (EPC) rating, which can help if you decide to sell your property.

The cons

Well, really there’s only one con: combi boilers require a lot of cold water in order to provide hot water on demand. This means that the flow from outlets elsewhere in the house can be affected. For example, if the washing machine is running, it can be impractical to shower at the same time as the water supply will be slightly limited.

With some management this problem needn’t be a deal breaker. You just need to remember not to do the washing up while your significant other is having a nice hot shower.


If you do choose to go with a combi boiler, you must remember the importance of having it regularly serviced. This can not only help with the efficient running of your boiler, but can also prolong its life significantly.

Boilers are used every single day and perform a vast amount of work. Because of this, small faults may develop in the overall running of the boiler. These faults can develop into huge problems if left untreated. But if they’re noticed during a standard service, they can usually be fixed quickly and inexpensively.

Many people neglect to have their boilers serviced, assuming that it’ll be cheaper to replace it than repair it eventually. This isn’t the case and plenty of local homeowners have saved themselves hundreds of pounds by getting their boilers serviced.

The best time to get your boiler serviced is just before the end of the summer. This means it will be in tip-top condition by the time the colder weather kicks in, which is when you will need it the most.

Share This

Boiler Repairs
Boiler Servicing
Gas Safety Certificates
Central Heating Repairs & Servicing
Emergency Plumbing Repairs
Boiler Replacement
Solar Thermal Repair and Maintenance
Google Reviews

Rated 5/5 based on 75 reviews. Write a review. Read all 75 reviews.

Quote mark

"Thanks for great service at an affordable price. Jaime was very efficient. It's great to find a tradesman that can be relied upon."

Adrian Collins

Quote mark

"Jamie recently serviced our boiler after searching for someone who was knowledgeable, professional and reliable. He set up all of our system to work optimally and advised against wasting money upgrading the system as competitors has suggested saving £0000's so a big thank you. Would highly recommend."

Chris Bloye

Quote mark

"I got in touch with Jamie when I moved to my flat in Plymouth. He has provide a fast, high quality service every year so far as well as offering helpful advice. I can't recommend him enough."

Ed White

Quote mark

"We had no hot water and had tried everything. Jaime was easy to contact, he provided an estimate before we agreed to the job. He arrived when he said he would and diagnosed and fixed the problem with our boiler quickly, efficiently and left no mess. Would definitely use his services again."

Heidi Metcalfe

Quote mark

"I’ve used Jaime for the 2nd year running to service my boiler and also to fix a leaky pipe. Friendly and reliable service, offered advice where needed and very reasonably priced. Would highly recommend."

Michelle Grieves

Quote mark

"Used Jamie for about three years for my home and two tenanted properties and he has always been fantastic. Had a full boiler replacement and a small repair and I've been very happy with the work. The annual inspection reminders are great and I've always found him friendly and helpful."

Katherine Healey

Quote mark

"Called them when I needed a job done ASAP as had other trademan lined up and had forgot. Very helpful and was able to fit me in at short notice. Turned up when he said he would, was very efficient and professional. Will definitely use him again."

Dean Bennett

Quote mark

"Jamie is always great, we've had him fit a boiler, do gas safety checks in rental properties and service our own boiler. Always prompt, always professional and a great service. Happy to keep using."

Mark Smith

Quote mark

"Been using Jamie for the last 3/4 years for landlords gas safety certificates and emergency callouts. Been very helpful and quick to respond. Happy to recommend - 5 stars."

Martin Woodage

Gas Safe Register Water Industry Approved Plumber Trustmark Worcester Bosch Accredited Installer


Unit 122, 91 Mayflower Street
Plymouth, Devon, PL1 1SB