Boiler Installation Checklist: How to Prep for the Pros

Installing a new boiler shouldn’t be taken lightly. Many regions require a licensed professional to do any boiler-related work because improper installation can be dangerous. This boiler installation checklist will help homeowners determine whether their space is ready and provide tips to ensure they’ve purchased the right boiler.

What to Know About Boiler Installation 

Boiler installation is a complex process that shouldn’t be left to the inexperienced. Before purchasing, you’ll need to know the required capacity, efficiency, and fuel source for your space. Check the boiler’s annual fuel utilization efficiency (AFUE), which tells you the boiler’s efficiency at converting energy generated by fuel into heat.

• Low efficiency: 56%–70% AFUE 

• Mid-efficiency: 71%–89% AFUE 

• High-efficiency: 90%–98.5% AFUE 

Before purchasing, verify with the manufacturer that the specifications are appropriate for the purpose and output. If you’re replacing an old boiler, check the new boiler’s compatibility with the existing system.

Pre-Boiler Installation Checklist

Download Checklist Here

Boilers have specific installation requirements, and pros must follow local guidelines, regulations, and building codes. Complete everything on this checklist before the boiler is brought to your property, or even before you purchase a boiler to ensure you’ve got a model that works for your space and setup. 

• Have a pro inspect the boiler room floor for strength and integrity 

• Measure the space and ensure there’s room for installation and maintenance (2 to 3 feet on all sides)

• Inspect the space for adequate ventilation and thermal expansion, including measuring the minimum flue placement distances

• Test your water’s hardness and pressure, which can affect efficiency and may indicate a need for a water softener before installing the boiler

• Check radiators, pipes, and controls for compatibility with the new boiler

• Inspect the electrical system for appropriate grounding

• Check that the electrical system provides the boiler’s needed voltage and amperage

• Ensure gas pipes are large enough to support a modern boiler (gas systems only)

• Apply for the appropriate building permits 

• Familiarize yourself with building codes, insurance requirements, and environmental regulations

• Think about the boiler’s future compatibility with alternative forms of energy

• Clear the installation space

Boiler Installation Checklist

Let the pros do their work, while you do the following:

• Be available to answer questions, make decisions, or grant access to all needed areas

• Read through the manufacturer’s manual to learn about safe operating limits 

• Ask the installer any questions

• Installers should run through a full heating cycle, but if they don’t, ask them to

• Make sure you have warranty information before the installers leave

• Get a full tutorial on how to run the boiler and any indicators to watch for

How Much Does It Cost to Hire a Boiler Installer?

Boiler installation costs $5,900 on average, though the size, type, and difficulty of installation can increase fees. Don’t try to DIY this project to save money—it’s unsafe and most likely illegal in your area. An improperly installed boiler can be incredibly dangerous, and hiring a local boiler installer is an investment worth making.