Installation
New System Install & Replacement
AC, furnace, and HVAC system installs with careful sizing, clean workmanship, and clear expectations.
Local HVAC service you can trust in Jefferson County
Installation, repair, and maintenance for comfort that lasts.
LaPlant & Sons (also known as LaPlant J.D. & Son) is a family-owned heating and cooling company serving Imperial, Fenton, and the greater St. Louis area. Owner Jerry LaPlant helps homeowners stay comfortable year-round with responsive service and quality workmanship.
HVAC Services
Residential heating, ventilation, and air conditioning support.
Repair
Fast Diagnostics & Repair
Troubleshooting and repairs for heating and cooling issues, airflow problems, and comfort unevenness.
Maintenance
Seasonal Tune-Ups
Prevent surprises with routine maintenance to improve reliability, efficiency, and system lifespan.
Service Area
Based in the greater St. Louis region with a focus on Jefferson County.
Imperial • Fenton • Jefferson County, MO
Where we go
Local coverage
We primarily serve Imperial and Fenton, along with surrounding communities throughout Jefferson County and nearby areas. If you are not sure whether you are in our service area, give us a call and we will confirm.
What to expect
Clear communication
We aim to keep scheduling and service straightforward. Tell us what you are experiencing, and we will help you decide the best next step.
About LaPlant & Sons
Family-owned and locally operated.
Local ownership
Owned by Jerry LaPlant
LaPlant & Sons (LaPlant J.D. & Son) is owned and operated by Jerry LaPlant and focuses on residential HVAC work for homeowners across Jefferson County and nearby communities.
Trust & presence
Listings you can verify
You can find LaPlant & Sons through community listings such as Nextdoor and the BBB. Ask for availability and schedule options when you call.
FAQ
Common questions from homeowners.
Do you handle both heating and air conditioning?
Yes. We work on heating, ventilation, and air conditioning (HVAC), including installs, repairs, and maintenance.
What areas do you serve?
We serve Imperial, Fenton, Jefferson County, Missouri, and surrounding areas in the greater St. Louis region.
How do I request service?
Call (314) 603-2775 or email laplantandsons@aol.com. If it is urgent, calling is fastest.
Request Service
Send a quick request and we will follow up.
Email: laplantandsons@aol.com