Cool, Even Comfort All Summer Long
A properly sized and installed air conditioner runs quieter, lasts longer, and costs less to operate. Heinanen Engineering installs and services central AC, heat pumps, and ductless mini-splits across Southeast Michigan, with the same family-owned, fair-pricing service we have offered for over 20 years.
What we offer
- High-efficiency Trane central air conditioners
- Ductless mini-splits for additions, garages, and tricky rooms
- AC repair on every major brand
- Spring tune-ups that keep efficiency high and bills lower
- Refrigerant, capacitor, compressor, and coil diagnostics
- Same-day service when the heat is on
An elite designation Trane awards to dealers who meet its highest standards for service, training, and customer satisfaction — earned, and renewed, every year.
Central Air Conditioning Installation
We size your system to your home using an actual load calculation — not a rule of thumb — so it dehumidifies properly and does not short-cycle. Premium Trane equipment, installed correctly, delivers even temperatures and the efficiency the label promises.
AC Repair You Can Trust
Warm air, weak airflow, strange noises, or a unit that will not start — we find the root cause and fix it. From low refrigerant and failed capacitors to compressor and coil issues, we repair the brand you already have and explain exactly what we found.
Ductless Mini-Splits
Adding comfort to a sunroom, finished attic, garage, or addition without ductwork? A ductless mini-split delivers quiet, efficient, room-by-room cooling and heating with simple installation and zoned control.
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 cooling 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.
