Services
Commercial Boiler Installation, Repair and Maintenance
Steam, hydronic and condensing boilers for hospitals, schools, resorts and federal facilities across Southern Idaho. We install, replace, start up, tune and maintain the plant your building depends on.
Grant Mechanical has worked on commercial and industrial boilers in Idaho since 2008. Boiler work is the core of our business, from a single burner repair to a full boiler room replacement inside an occupied hospital, school or resort.
We are owner-operated. Matt Grant performs most of the work himself, so your project stays with one accountable person from removal of the old equipment through startup and service.
Manufacturer certified
- Fulton
- Hydrotherm
- Raypak
- Lochinvar
- Unilux
- Power Flame
- Weishaupt
We also maintain Bryan and VMP boilers.
Scope
Boiler services
Replacement and new installation
Complete boiler room replacements, from removal of the old units through piping, startup and combustion tuning. In 2025 we replaced seven boilers across three Sun Valley Company properties in a single year.
Repair and troubleshooting
Diagnosis and repair for boilers, burners, pumps and steam lines, including work inside active hospitals where heat and hot water stay on.
Startup and combustion tuning
Startups for new boilers, burners and pumps, with combustion analysis and documented results.
Annual preventive maintenance
Tube brushing and vacuuming, combustion tuning and water treatment, scheduled around your heating season.
Snowmelt, pool and fountain boilers
Service and replacement for snowmelt, pool and fountain boiler systems at resorts and mountain properties.
Boiler room piping and components
Piping replacement, expansion tanks, pump alignment and system additions, handled under the same contract.
Boilers
Systems we work on
- Steam boilers
- Hydronic hot water boilers
- Condensing boilers
- Snowmelt boiler systems
- Pool and fountain boilers
- Power Flame and Weishaupt burners
Recent work
Where we have done it
Sun Valley Company
Seven boilers replaced across the Sun Valley Inn, Olympic Pool and Trail Creek Lodge in 2025, plus separation of the snowmelt and fountain boilers at Sun Valley Lodge.
St. Luke's McCall Medical Center
Annual maintenance on three VMP steam boilers and two Bryan boilers, with combustion tuning and documentation.
Saint Alphonsus Regional Medical Center
Hot water and steam boiler maintenance, tube brushing and steam line troubleshooting in an active hospital.
Twin Falls School District
Boiler block replacement and district-wide annual maintenance, scheduled around the school calendar.
FAQ
Questions about boilers
Do you work on steam boilers?
Yes. We install, repair and maintain steam, hydronic hot water and condensing boilers. Recent steam work includes annual maintenance on the steam plants at St. Luke's McCall Medical Center and Saint Alphonsus Regional Medical Center.
Which boiler brands do you service?
We are manufacturer-certified on Fulton, Hydrotherm, Raypak, Lochinvar and Unilux boilers and on Power Flame and Weishaupt burners. We also service Bryan and VMP boilers. Call us with your make and model and we will tell you how we can help.
Can you replace a boiler while our building stays open?
Yes. Most of our work happens in occupied buildings. We plan phased shutdowns with your facilities team: summer windows for schools, after-hours windows for hospitals and shoulder seasons for resorts.
Do you offer emergency boiler repair?
Yes. Call 208-631-0555 any time, day or night. We provide 24/7 emergency mechanical response across the Treasure Valley and Southern Idaho.
How often should a commercial boiler be serviced?
Most commercial boilers get a full service once a year, usually before heating season, with water treatment checks in between. We set the schedule around your equipment and how many hours it runs.
Do you handle public works and federal boiler projects?
Yes. We hold Idaho Public Works Contractor license PWC-C-17335-B-4 and are an SBA-certified Service-Disabled Veteran-Owned Small Business. We spent four years replacing boilers and chillers at Mountain Home Air Force Base as a subcontractor to SupplyCore.
Get in touch
Get a quote for boilers
Tell us about your equipment and what you need. Emergencies are answered by phone any hour.
Call 24/7208-631-0555 Emailgrant-mechanical@msn.comBased inNampa, Idaho