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Combi Boilers (vs Conventional Boilers)

Pro Ace Heating and Air Conditioning has been committed to providing state-of-the-art information about the latest innovations and improvements in the HVAC domain for over 22 years.  As a result we believe our 85,000 plus customers are the very best informed users of heating and cooling technology in the country.  The recent rise in popularity of combi boilers presents an opportunity for clear answers to various questions, such as: 

Does a combi boiler work better than a conventional boiler?  

What are some of the benefits of a combi boiler? 

This page takes a look at combi boilers (vs conventional boilers) as a heating option for either home or office. 

What is a Combi Boiler?

Most homes split the functions of heating the environment and our water supply between a furnace and a water heater.  A combi boiler satisfies both functions by heating the water that comes out of our taps and the water in the home heating system.

What are the Advantages of a Combi Boiler?

  • They will heat your entire home
  • They can provide hot water without installing a water tank
  • They are generally more affordable than conventional boilers
  • They feature a more compact and lightweight design compared to conventional central heating units
  • They are generally speaking more energy efficient
  • They provide hot water and drinkable water on demand
  • They are easier to maintain (less sludge buildup, for instance, since the water comes directly from the mains)
  • They are more affordable
  • They are very easier to install
  • They are highly efficient, resulting in reduced energy costs
  • They are available in a variety of formats: gas, oil-fired or LPG models

What are some Disadvantages of a Combi Boiler?

  • They are each able to support only up to 3 showers. Multiple dwelling homes may require a different solution.  (Call Pro Ace to learn about any and all options.)
  • Since combi boilers draw directly from the mains, they are vulnerable to fluctuations in the main water supply pressure, depending on your geographical area.
  • Their compact size does not make them ideal for large businesses.


As you can see, the advantages of a combi boiler far outweigh the disadvantages.  Whether you are planning a heating unit in for a new home or replacing an existing (conventional) unit, you should consider the combi boiler option.  Replacing a conventional boiler with a combi boiler will be less expensive than replacing the current unit with a conventional boiler.  It will also take up less space which you can use for something else.  

Call Pro Ace for answers to all your HVAC questions.

Whether your questions are about first installation, replacement, service and maintenance, or repair, Pro Ace offers free advice 24/7.

We also operate a 24/7 emergency service no matter where you are—home and office.

To book this service, simply contact us by calling at 604-293-3770


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