Your Trusted Heating and Cooling Contractor in Bay City

Enjoy complete peace of mind knowing your home will stay at the perfect temperature year-round without surprise breakdowns or hidden fees.

We combine years of local experience with transparent pricing and a 100% workmanship guarantee on every service call.

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MONEY SAVINGS

CUSTOMER SATISFACTION

FAST SERVICE

Licensed & Professional HVAC Technicians

When your home heating or cooling system isn’t functioning at optimal performance, it costs you money and peace of mind.

We are your Bay City HVAC contractor that gets your project scheduled promptly and completes it on time!

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$99 Off Complete System Change

Get $99 off a complete residential system change when installing both heating and cooling equipment!
Discount good with coupon only. Not valid with any other offer. EXPIRES: 3/15/26 | Click to Print Coupon

Cooling Your Home in Summer

Air Conditioning Cooling System

Ductless Mini-Split Cooling System

Heat Pump Cooling System

Annual Maintenance for AC

HVAC Services

Furnace Installation
Boiler Installation
Air Conditioner Installation
Furnace Repairs
Boiler Repairs
Air Conditioner Repairs
Furnace Maintenance
Boiler Maintenance
Air Conditioner Maintenance

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Heating Your Home in Winter

Furnace Heating System

Boiler Heating System

Ductless Mini-Split Heating System

Heat Pump Heating System

Annual Maintenance for Furnace

Your Satisfaction Matters!

Smith Mechanical Heating and Cooling

4.9

review us on

Maryelizabeth R.

14:21 04 Nov 25

The technician that came out was timely and very professional. He explained everything in detail and we were 100% confident in the service that was provided

M.Sav88

16:09 22 Oct 25

Awsome service. Quick and attentive. Collin was great! He was also really nice.

Jill B.

21:32 14 Oct 25

Called and got an appointment and was given a time range between 2-4 PM. Got a call that he was on the way and arrived promptly. Did a great job checking both the furnace and A/C. Would recommend them to anyone who needs service. Fast, friendly and knowledgeable.

Michelle P.

14:47 26 Aug 25

Joe came out to provide an estimate on what we wanted and needed for our home heating and cooling system. Throughly answered all my questions and concerns. Joe and his crew did an excellent job with our furnace and A/C unit replacement and install. While they were there we had them clean our duct work. They were professional, polite, and answered any questions we had during their install. Highly recommended!

MARLENA B.

19:07 18 Aug 25

Easy to contact, fit us right into the schedule. Very satisfied with the service.

Beth S.

17:40 24 Jul 25

Very Happy! Our first experience with Smith Mechanical. They responded quickly to our request for a quote. Every person we dealt with was friendly, knowledgeable and they beat the other quote prices. The install went smoothly, the Mini Split is working well to cool our property.
🌟 🌟 🌟 🌟 🌟's all the way. Thank you.