Never Lose Power When It Matters Most
Storms, downed lines, and grid failures do not wait for a convenient time. A Generac whole-home standby generator keeps your heat, sump pump, refrigerator, and critical systems running automatically the moment the power goes out. Heinanen Engineering is your local Generac dealer — we size, install, and maintain backup power for homes, facilities, and critical applications.
What we offer
- Generac automatic whole-home standby generators
- Efficient, quiet models for homes, facilities, and critical systems
- Proper sizing so the loads that matter stay on
- Professional installation and safe gas and electrical connection
- Maintenance plans to keep the system test-ready
- Repairs and load testing on existing generators
An elite designation Trane awards to dealers who meet its highest standards for service, training, and customer satisfaction — earned, and renewed, every year.
Generac Whole-Home Standby Generators
A Generac standby generator wired into your home starts automatically within seconds of an outage and powers your furnace, sump pump, refrigerator, well, and other essentials — no extension cords, no manual switches. Generac builds efficient, quiet models for every home size, and you stay comfortable and protected whether you are home or away.
Sizing & Installation
The right generator is the one sized to the loads you actually need. We assess your home or facility, recommend the correct capacity, and handle the full installation — pad, gas, transfer switch, and electrical — done safely and to code.
Maintenance & Repair
A backup generator is only useful if it runs when you need it. We service and load-test existing units, replace worn components, and offer maintenance plans so your system is always ready for the next outage.
Membership Program
Perfection Plus Maintenance Program
Our Perfection Plus Maintenance Program is designed to extend the life of your equipment, reduce unexpected breakdowns, and improve overall efficiency — all while saving you money.
Fewer Breakdowns
Regular tune-ups catch small issues before they become no-heat or no-cool emergencies.
Lower Costs
A clean, properly tuned system runs more efficiently and uses less energy.
Extended Equipment Life
Maintained equipment lasts longer, protecting your investment for years.
Preferred Status
Members move to the front of the line for scheduling and service calls.
10% Discount
Save 10% on select repairs and parts as a Perfection Plus member.
Peace of Mind
Know your comfort system is cared for by the same local team, season after season.
Frequently Asked Questions
Common questions about generators service in Southeast Michigan.
A Trusted Partner in South Lyon for Over 20 Years
Helping is right in our name. The Heinanen family is proud to support South Lyon — at local events, around town, and through the Carl & Joanne Foundation.
