Great One Mechanical LLC Heating and Air

$90/service call

(waived if hired)

Select a service

Zip code

Type of heating system

Building height

Heating system problems

About

With 20+ years of hvac expertise, Great One Mechanical delivers honest,high quality service with precision and care. We treat your home like our own and don't leave until the job is done right.

Overview

Hired 22 times

Serves McDonough, GA

Background checked

1 employee

9 years in business

Business hours

Sun9:00 am - 4:00 pmMon8:00 am - 7:00 pm

Payment methods

This pro accepts payments via Cash, Check, Square cash app, and Zelle.

Top Pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

2024

Services offered

Type of heating system

Heating system problems

No problem, just need maintenance

No heat

Not enough heat

Unusual noises from inside

Building height

Single-level

Two-story

High-rise

Reviews

Customers rated this pro highly for responsiveness, professionalism, and work quality.

Very good 4.6

21 reviews

5

90%

4

0%

3

0%

2

0%

1

10%

Read reviews that mention:

Christian C.

Jul 13, 2025

•

Hired on Thumbtack

Needed immediate service on my HVAC system. They were fast and professional, and reasonably priced! Will definitely use them again.

Details: The power is on, but the fan won't run • Routine maintenance • Outside • House

Central Air Conditioning Repair or Maintenance

Natalie J.

Jul 12, 2025

•

Hired on Thumbtack

Ty'Rence picked a great name for the business. He is indeed great! He was able to quickly troubleshoot why my ac was not turning onnas well as fix it same day. Not only did he fix the issue I loved the education provided regarding my ac and maintenance. Very professional with great customer service skills.

Details: Repair • Unit won't turn on or off • Attic • Ground floor • House

Central Air Conditioning Repair or Maintenance

Patrice W.

Jun 19, 2025

•

Hired on Thumbtack

Working with Great One was an experience of high quality work, attention to detail and caring about the customer. We will certainly call Great One again for any heating and air needs. We appreciate the service providing comfort and safety to our family.

Details: Replace an existing A/C unit • I already have the A/C unit • Roof • 2,000 - 3,000 sq ft • Three stories • House

Central Air Conditioning Installation or Replacement

Chloe C.

3 weeks ago

•

Hired on Thumbtack

Quick response, great communication, arrived on time. Provided thorough explanations of issue, fixed quickly. Greatly appreciate his work!

Details: Furnace • Basement • Two-story building • House

Heating System Repair or Maintenance

John W.

7 days ago

•

Hired on Thumbtack

Details: Furnace • Routine maintenance • Basement • Two-story building • House

Heating System Repair or Maintenance

Credentials

Background Check

Ty'rence Scott