Heating, AC, & Plumbing Services in Highland, MI

Highland’s Trusted Home Service Experts Since 1937

Located west of Oakland County, Highland is home to over 5,000 families, many of whom we’ve had the pleasure of meeting in person. You may not know it, but Highland Township is one of Michigan’s oldest communities, dating back to 1835! Thornton & Grooms also has a long and proud history: we’re one of the oldest HVAC and plumbing contractors in the state (we’ve been at it for nearly a century!). We’ve stayed in business because of our commitment to great customer care, honest service, and fair prices. So, if you need a repair, replacement, or tune-up, Thornton & Grooms is always here to lend a helping hand.

Enjoy 5-Star Customer Care and Same-Day Service on Your Next Repair or Replacement

Hiring Qualified Professionals:

You'll enjoy working with our licensed experts from the first call to the final handshake.

Taking a Prevention-First Approach:

Annual maintenance is proven to save you money. So we prioritize check-ups over selling new systems.

Honoring Our We Care Guarantee:

Showing we care by guaranteeing our professionalism, reputation, and convenience each day.

Service Overview

Highest-Rated Home Service Experts in Highland

Thornton & Grooms puts customers in Highland first in everything we do. We offer 24/7 support for those can’t-wait plumbing and HVAC emergencies, for one. We’ve also expanded our service area to include the entire area along Livingston Road between Highland and Elenor Roads–the heart of the town. Last but not least, don’t forget to check our guarantees. We offer some of the best protections in the state, including our We Care Guarantee, which ensures a 5-star service experience every time you call us.

Service Details

How Can We Help You Today?

  • Heating Service in Highland

    Homeowners who turn their furnace or heat pump on for the first time after a long summer will sometimes get a nasty surprise. A bad smell, a rattling noise. Or maybe your furnace won’t turn on at all! For times like these, the pros at Thornton & Grooms are just a phone call away. We offer fast diagnostics on just about every heating system in Highland homes today. And for those winter breakdowns, we have experts on call 24/7 to help. Have plans to replace your furnace or heat pump? We offer great deals on the latest high-efficiency systems. We’ll even help you finance your new system and guarantee your satisfaction for years to come.

  • Cooling Service in Highland

    Thornton & Grooms is dedicated to keeping Highland homeowners cool and comfortable all summer. Our experienced technicians repair all AC makes, models, and brands and tend to have the parts on hand in their trucks to resolve most issues in just one visit to your home. Looking to replace your aging AC system? We provide free in-home consultations, during which we’ll review your best AC system options, pricing, and financing options. Best of all, you can relax knowing your service comes backed by some of the strongest guarantees in the state.

  • Plumbing Service in Highland

    From leaky water heaters and broken sewer lines to major renovations like whole-home repiping or water main replacements, the expert plumbers at Thornton & Grooms are here for you. We’ve been resolving plumbing issues for our customers since 1937. In fact, we’re one of the longest-serving plumbers in the state, even the country. Countless homeowners in Highland trust us to deliver fair pricing and professional service year-round. With over 10,000 5-star reviews, we’d say we’re doing a good job not disappointing them!

Home Care Club

Join the Home Care Club and Save on Home Services

Get lower monthly energy bills and avoid expensive A/C repairs by joining the Home Care Club. With bi-annual HVAC check-ups, our comfort specialists will catch small issues before they snowball into costly fixes. Plus, with yearly maintenance, you’ll keep your A/C equipment under warranty for as long as possible.

Additionally, plan members receive:

  • Markdowns on HVAC, plumbing, and drain repairs
  • Discounts on comfort system replacements
  • Extended warranties
  • Lower service fees
  • And more...


Celebrating 85+ years of service in the great state of Michigan

I continue to be thankful for Thornton & Grooms.”

“I continue to be thankful for Thornton & Grooms. Today, Mason came out to figure out why my shower lost hot water. He was able to figure out the problem quickly, discuss with me my options in a clear way, and do the repair efficiently. I’ll continue to use them for all of my plumbing needs.”

-Liz C. | Highland Homeowner

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Guarantees You Won't Find Anywhere Else

We promise to provide our customers with 5-star service—no matter what. If you are not satisfied with our level of service at any point, we ask that you inform us so we can make it right before we leave your home.

Real Guarantees
  • Professionalism

    We are a team of skilled, knowledgeable professionals who undergo regular training to provide top-notch service and solutions at a fair cost.

  • Reputation

    We truly care about providing 5-star service to our customers and our community. With thousands of Google reviews (we reply to each one!), it seems our customers agree.

  • Convenience

    We know customers already have enough to deal with, so we offer friendly and convenient service from the first call to our post-service process.

Schedule a Visit from Thornton & Grooms in Highland Today