HVAC
Contractor
in Bay City
Serving You and Your Family Since 1938
Bay City Heating & Cooling Services
Bay City’s Premier Lennox Dealer
Since our beginning, Haertel Heating and Cooling has been proud to be a Premier Lennox Dealer. Our customers have come to rely on the high standards we use in order to maintain this premium status. In short, it guarantees quality products and workmanship from a team of technicians who undergo rigorous, ongoing factory training. Our customers are always welcome to select other quality brands – with the guarantee that you’ll get the same superior workmanship from our technicians!
Step 1:
Expert Assessment
Most people want help in making big decisions about heating, ventilation, cooling, and air quality for their home. So we’ll meet you at your home for a free consultation. We’ll walk through and assess your current HVAC system, then give you options that reflect your budget and align with your comfort needs.
Step 2:
Quality HVAC Installation
After you’ve selected the level of quality and efficiency you prefer, our design team will fabricate your home heating and cooling system to spec, then install it on a day that works for you. Our HVAC installation services ensure that your system is set up for optimal performance. Get more details about our Design and Installation.
Step 3:
Save With HVAC Maintenance
Annual HVAC maintenance of your heating and cooling system saves you money by extending longevity and maximizing efficiency. If you schedule your maintenance during warmer months, we can combine maintenance of both your furnace and air conditioner.
ENERGY SAVINGS CALCULATOR
Estimate potential energy cost reductions in your home.
OUR COMPREHENSIVE WARRANTY
View warranty details and our promise of quality service.
REBATES & FINANCING OPTIONS
Explore available rebates that make high-quality affordable.
Areas We Service
Mid-Michigan
Our heating, cooling, and indoor air quality services are available throughout the Tri-City area and surrounding communities:
Expectations
Building trust is about communicating and meeting expectations.
Here’s what our customers can expect from our team of professionals at Haertel Heating and Cooling:
Satisfaction Guaranteed
24/7 Emergency Repairs
Knowledge & Expertise
Prompt & Professional
Licensed & Insured
CURRENT REBATES
Effective: 1/1/26 – 3/1/26
Subscribe to Save
No spam! Just savings!
- Get your annual maintenance reminder via email.
- Get our quarterly promo and rebate details so you know when to buy.
Our Customers Say It Best
Since 1938, the Haertel Tradition
has been to provide high-quality HVAC services to Bay City residents that will earn your enduring trust – even to the next generation! We choose Lennox and other superior heating and cooling products for the fine craftsmanship that our customers deserve. Thank you for trusting us!
Haertel Heating & Cooling
118 Washington Ave
Bay City, MI 48708
(989) 892-6111
FAX: (989) 892-4434
Emergency 24/7 Service Hours
Exclusively available to our customers!
Haertel Heating & Cooling
provides quality HVAC services in a timely manner. We’ve been building lifelong relationships in the Great Lakes Bay Region for generations!
