Air-Intake and Flue Gas Systems for Combustion Boilers
All combustion boilers (ones powered by natural gas, propane, solid fuel, or oil) require uninhibited air intake and flue gas systems for safety and efficiency.
Because of this, you also have to be mindful of location when you want to install or move a combustion boiler: there needs to be good airflow, a fresh-air supply, and nearby exhaust to vent emissions produced during the combustion process.
If you are looking at a combustion boiler, you might also want to consider outfitting the unit with an electronic ignition technology that can eliminate the need for a pilot light that’s always burning.
Size and Output
The size of your home is an important factor to keep in mind when selecting a boiler. For instance, compact combi-boilers wouldn’t be effective for large homes with multiple bathrooms and several family members. Conversely, a large conventional boiler wouldn’t be a suitable option for a small apartment or studio, simply because you won’t have the storage space required to house the tank and cylinder.
If you’re not sure what capacity your boiler should be, there are many online boiler size calculators you can use as a reference.
Water pressure is another thing you’ll have to keep in mind when determining your boiler type, because both combi-boilers and system boilers both require high and reliable water pressure from the main water supply to perform optimally.
Only conventional boilers are suitable if your mains water pressure is low, but there are solutions if water pressure is an issue in your home. For one thing, if you have low water pressure and don’t have the storage space for a conventional boiler, then you can opt for a combi-storage boiler system.
On the other hand, if you do have adequate water pressure but don’t want a conventional boiler, a system boiler will be cheaper to buy and install, and you’ll still have a reliable capacity even if you have a large household.
Energy Efficiency and Condensing Boilers
Energy efficiency is a key consideration for most homeowners looking to buy new appliances, and in general, the more efficient a boiler is, the more it will cost up front. But it’s important to remember that energy-efficiency will translate to long-term savings as far as energy and fuel use are concerned, and it won’t take long for you to recoup the additional money you spent for the better boiler.
Pro tip: When looking for energy-efficient boilers, look for features like condensing flue gas systems and modulating burners.
Moving a Boiler
There are many reasons why you might need to move a boiler, including that you’re doing some renovations or that you have to relocate the system for safety reasons.
Moving a boiler requires expertise that only professionals can provide, and the cost for this service can range anywhere from $500 to $1,500 or more. It’s hard to provide firm estimates as each home and situation is different, and things like how far it’s being moved and how much labour is required, will affect the final cost.
The total cost will depend largely on the components that have to be moved, as each has its own approximate cost associated with it:
- Boiler flue: $120 – $200
- Extension flue pipes or flue bends: $70 per meter
- Magnetic filter: $170 – $200
- Controls: $120 – $1100
- Pipework or fittings: $500 – $1,000