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The 6 Best HVAC Companies in Bay City, MI

Last updated October 6, 2026 · ranked from 951 Google reviews · How we rank

This list ranks 6 hvac companies in and around Bay City, MI, led by Haertel Heating & Cooling, Smith Mechanical Heating and Cooling and Badour Heating and Cooling. Together they have 951 Google reviews; Haertel Heating & Cooling has the highest Google rating on the list at 4.9. Every place on the list is in Bay City, MI. Rankings weigh Google rating, review volume, how complete and current each listing is, and our own notes on each place.

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  1. Haertel Heating & Cooling in Bay City1

    Haertel Heating & Cooling

    4.9(412)· Google4.9 out of 5 from 412 reviews (Google rating)

    HVAC contractor

    Own this business? Claim itOpen now · closes 12:00 AM

    More than 80 years of residential heating and cooling work, a 4.9-star Google rating from 412 reviews, and 24/7 emergency service for customers earn Haertel Heating & Cooling the top spot in Bay City, MI. Its licensed technicians handle repairs, routine maintenance, system replacements, air conditioning installation, and ventilation work. The supplied reviews describe appointments kept on time, questions answered, and a problem resolved. Free estimates add a practical benefit for homeowners planning work beyond an urgent repair.

    • 24/7 emergency service
    • Licensed HVAC technicians
    • Free estimates
    “Appointment time kept. All our questions about this service were answered to our satisfaction. Thank you Tom👏👏”
    — Jan V, 2026-09-04 · google

    Work at Haertel Heating & Cooling? Get your badge

  2. Smith Mechanical Heating and Cooling in Bay City2

    Smith Mechanical Heating and Cooling

    4.9(247)· Google4.9 out of 5 from 247 reviews (Google rating)

    HVAC contractor

    Own this business? Claim itOpen now · closes 12:00 AM

    Round-the-clock service and reviews describing prompt repairs earn Smith Mechanical Heating and Cooling the No. 2 spot in Bay City, MI. Its certified technicians handle installations, boiler work, furnace and AC repairs, and routine maintenance, with free estimates available. The Google listing carries a 4.9-star rating across 247 reviews. Customers describe clear communication during an AC leak repair, a thorough seasonal furnace check, and a new furnace installation after losing heat—specific examples of both routine upkeep and breakdown support.

    • 24/7 service
    • Free estimates
    • Certified HVAC technicians
    “Chad was superb. He’s right on top of communication and maintenance. He is definitely a keeper!”
    — Tammie Day, 2026-09-10 · google

    Work at Smith Mechanical Heating and Cooling? Get your badge

  3. Badour Heating and Cooling in Bay City3

    Badour Heating and Cooling

    4.9(189)· Google4.9 out of 5 from 189 reviews (Google rating)

    HVAC contractor

    Own this business? Claim itOpen now · closes 12:00 AM

    Prompt responses and furnace work help earn Badour Heating and Cooling the No. 3 spot in Bay City, MI. Reviewers describe a next-morning furnace inspection and cleaning, a same-day chimney pipe repair, and professional furnace installations. The family-owned company handles installation, maintenance, and emergency repairs for residential and commercial customers, with hours listed as open 24 hours daily. A 4.9 Google rating from 189 reviews adds support, while its stated consultation process gives customers an explanation of their heating and cooling options.

    • Open 24 hours
    • Residential and commercial
    • Furnace installation
    “We were in a bind laying pipe for radiant in ground heat. Called him Monday and he came out Wednesday. What a great experience we had with him. Highly recommended!”
    — Linda Miller, 2026-09-19 · google

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  4. Goddeyne Plumbing, Heating & AC in Bay City4

    Goddeyne Plumbing, Heating & AC

    4.6(31)· Google4.6 out of 5 from 31 reviews (Google rating)

    HVAC contractor

    Own this business? Claim it

    Heating, air-conditioning and plumbing services give Goddeyne Plumbing, Heating & AC a broad residential scope, earning it the No. 4 spot among HVAC companies in Bay City, MI. The business holds a 4.6-star Google rating from 31 reviews and offers onsite service and repairs. One reviewer describes an immediate visit followed by diagnosis, a part order and a completed water-heater repair. Located at 1823 Broadway St, its listed hours are Monday through Friday, 8 a.m. to 4 p.m.

    • Heating and AC
    • Onsite repair services
    • 4.6-star Google rating
    “I am very happy with the job Goddeyne did for us. Our tub faucet broke off and we were unable to take showers or bathe our two young children. I called into work and called a Handyman who said they could come out that same day. He showed…”
    — Alyssa Fierros, 2026-05-07 · google

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  5. John Groya Plumbing & Heating in Bay City5

    John Groya Plumbing & Heating

    4.4(72)· Google4.4 out of 5 from 72 reviews (Google rating)

    Heating contractor

    Own this business? Claim itClosed · opens 8:00 AM

    A furnace replacement account gives John Groya Plumbing & Heating a concrete reason for its No. 5 spot: one reviewer says their replacement furnace was still running without issues five years later. The business has a 4.4-star Google rating across 72 reviews, with other customers describing fast service and helpful people. Listed repair service and weekday hours of 8 a.m.–4 p.m. add practical details for readers considering the company at 1211 S Wenona St in Bay City, MI.

    • Furnace replacement feedback
    • 4.4 Google rating
    • Weekday repair service
    “Fast service from a kind soul. 10/10 would use again”
    — Lauren Quaal, 2025-08-12 · google

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  6. JJs mechanical llc in Bay City6

    JJs mechanical llc

    HVAC contractor

    Own this business? Claim itClosed · opens 8:00 AM

    Installation and repair are the two documented offerings that earn JJs mechanical llc the sixth spot among HVAC companies in Bay City, MI. The business is listed at 1207 Stanton St, with weekday hours of 8 a.m. to 5 p.m., Monday through Friday. Its inclusion rests on those core services and a local address, giving readers comparing installation or repair options a company with a documented weekday schedule.

    • HVAC installation
    • HVAC repair
    • Weekday business hours

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Map of every pick

Compare at a glance

Comparison of the best HVAC Companies in Bay City, MI
#PlaceGoogle ratingPriceGoogle reviewsNeighborhoodPhoneOpen now
1Haertel Heating & Cooling4.9(412)4.9 out of 5 from 412 reviews (Google rating)—412—+1989-892-6111Open
2Smith Mechanical Heating and Cooling4.9(247)4.9 out of 5 from 247 reviews (Google rating)—247—+1989-893-2669Open
3Badour Heating and Cooling4.9(189)4.9 out of 5 from 189 reviews (Google rating)—189—+1989-980-9095Open
4Goddeyne Plumbing, Heating & AC4.6(31)4.6 out of 5 from 31 reviews (Google rating)—31—+1989-892-1744—
5John Groya Plumbing & Heating4.4(72)4.4 out of 5 from 72 reviews (Google rating)—72—+1989-893-7060Closed
6JJs mechanical llc———+1989-395-3231Closed

Ratings and review counts shown are Google ratings, displayed with attribution.

How we ranked this list

Each hvac company is scored on a Bayesian-weighted rating (its rating adjusted for how many reviews it has compared with the Bay City category average), how recently we verified its details, and how complete its listing is. Scores and ranks are stored, so the order only changes when the underlying data changes.

Read the full methodology

Ask Noemic: best hvac companies in Bay City

HVAC Companies in Bay City, MI: common questions

Which HVAC companies in Bay City, MI offer around-the-clock service?
Haertel Heating & Cooling advertises 24/7 emergency service for customers; call 989-892-6111. Smith Mechanical Heating and Cooling advertises 24/7 service, including emergency furnace and AC repairs, at 989-893-2669. Badour Heating and Cooling lists 24-hour hours every day and handles emergency repairs; its number is 989-980-9095.
Which companies offer free estimates or online estimates?
Haertel Heating & Cooling and Smith Mechanical Heating and Cooling both advertise free estimates. Timm Plumbing & Heating lists online estimates among its service options. Badour Heating and Cooling offers a full consultation to explain options.
Who handles boilers and combined plumbing and HVAC work in Bay City, MI?
Smith Mechanical Heating and Cooling specifically lists boiler services. Timm Plumbing & Heating, at 62 York St, lists boilers, plumbing, hot water tanks, furnaces, and AC, with installation and repair. Goddeyne Plumbing, Heating & AC, at 1823 Broadway St, offers residential plumbing, heating, and AC services.
Which company repairs both appliances and HVAC equipment?
Drzewicki Services, at 1102 26th St, repairs most makes and models of appliances, furnaces, and air conditioning. Its listed hours are Monday through Friday, 9 a.m.–5 p.m. It does not stock parts for sale without an in-person diagnosis. Call 989-893-2830.
Which HVAC companies in Bay City, MI have the strongest Google rating and review-count combination?
Haertel Heating & Cooling pairs a 4.9 rating with 412 reviews, the largest review count among these entries. Smith Mechanical Heating and Cooling also has a 4.9 rating, with 247 reviews. Badour Heating and Cooling has 4.9 across 189 reviews, and Drzewicki Services has 4.9 across 73 reviews.

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