1. No results to show.
Explore Services
Join as a pro
Log in
  1. No results to show.
  1. No results to show.
Explore Services
Sign up
Log in

One Nation Heating and Air LLC

Top Pro

185

hires

Top Pro

185

hires

Free service call

Type of heating system
Heating system problems

Responds in about 9 min

Thumbtack Guarantee

If you hire this pro, you’re covered by a money-back guarantee. Learn more

If you hire this pro, you’re covered by a money-back guarantee. Learn more

About
Welcome to 🇺🇸One Nation Plumbing and Heating 🇺🇸– A family owned company that does it right. ✅ At One Nation, we treat every home like our own. Whether it’s a leaky faucet, a minor AC repair, or a full hvac system upgrade, we show up on time, do the job right, and make sure you’re completely 💯% satisfied—no 🚫shortcuts, no 🚫 surprises. We’re a local team you can count on—licensed, experienced, and fully committed to honest work and fair prices. From the first call to the final clean-up, we’re here to make the process smooth, stress-free, and reliable. 🧘🏻‍♂️ Our promise is simple: Quality service. Friendly faces. Real peace of mind. Because to us, you’re more than a customer—you’re a neighbor. One Nation Plumbing & Heating 🇺🇸
Overview

Current Top Pro

Hired 185 times

2 similar jobs done near you

Background checked

License verified

3 employees

2 years in business

Business hours

Sun7:00 am - 10:00 pmMon7:00 am - 10:00 pm

Payment methods

This pro accepts payments via Cash, Check, Credit card, Venmo, and Zelle.

Social media

Facebook, Instagram

Top Pro status

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

Top Pro Icon

2024

Projects and media

105 photos

Projects and media

105 photos

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

Three-story

Reviews
Excellent 4.9

115 reviews

5

96%

4

0%

3

1%

2

0%

1

3%

Customer photos

Customer photos

Showing 1-5 of 115 reviews
pro avatar
Kathryn A.
•

Jun 2, 2025

Hired on Thumbtack

I’m happy to give Gerardo a 5 star rating. I have a small 1948 house with a crawl space like a lot of people in Denver. In December 2024 I was still trying to sleep comfortably with a space heater and extra blankets because my furnace was poorly situated in the crawlspace and did not provide me with adequate heat in the freezing cold night. Then I got lucky: I found Gerardo on Thumbtack. He is a friendly young man who explained what was going on and how he could fix my furnace. He and his crew worked for an entire day and a part of the night to replace my crawlspace furnace so that it now hums quietly and efficiently. While he worked and when he was finished, Gerardo explained to me what was going on under the floors, and that he offered three choices for solving the problems that I was living with, and that the changes he was making were going to make a big difference. Gerardo and his crew literally built me a new furnace with air-conditioning and removed the wreckage of two older furnaces in the crawlspace as well. The thermostat now works with precision and allows me to control the temperature to my needs from my cell phone. I hate to sound like I’m selling something, but it is certainly worth your time to get to know Gerardo and find out how he can help you. I highly recommend him.

Details: Furnace • No heat • Not enough heat • Single-level building • House

One Nation Heating and Air LLC's reply
Kathryn, thank you for giving us the opportunity to improve your home's HVAC system. It was truly a pleasure to assist you, and we’re especially glad to know you're satisfied with our services. Please don’t hesitate to reach out if we can be of help again.
Heating System Repair or Maintenance
pro avatar
John c.
•

May 28, 2025

Hired on Thumbtack

Gerardo was EXTREMELY helpful and fixed my problem in a very timely manner. He took the time to explain what was going on and even explained how certain things worked in my house. Very honest and fair prices and didn’t try to upsell anything. I will 1000% be getting back in contact with any more heating, plumbing and electrical work!

Details: Yes, repair is urgent • Only one drain has issues • Clogging • Slow draining • House

One Nation Heating and Air LLC's reply
Hi John, It was a pleasure and we're glad we could help! Gerardo Lopez/One Nation Plumbing & Heating
Plumbing Drain Repair
pro avatar
Donald N.
•

May 12, 2025

Hired on Thumbtack

I don’t think I could’ve found a better HVAC company to replace my water heater. These guys were more than just professional, they were extremely personable as well. I really enjoyed working with them, knowing that I was in good hands. I also know now that if I have heating or plumbing or AC problems in the future, I know where to go. I highly recommend One Nation Heating and Air.

Details: Installation or replacement • No hot water • Leaks • Gas tank • Basement • House

Water Heater Repair or Maintenance
pro avatar
Teresa F.
•

Mar 26, 2025

Hired on Thumbtack

We have a problem with one of our heating ducts. Gerardo came over to diagnose the issue for us. He is very knowledgeable and courteous. We won’t hesitate to call him again if the need arises. And we wholeheartedly recommend him so don’t hesitate to call. (720) 365-5749

Details: Not enough airflow / Blocked vents • Heating and cooling • Two-story building • House

Duct and Vent Repair
pro avatar
Evan A.
•

Mar 4, 2025

Hired on Thumbtack

Gerardo at One Nation did a great job with my washer hookup installation project. They offered a reasonable price, great communication, and quick service. I would use One Nation again for my plumbing & heating needs.

Details: A few pipes • Hook-up appliance or fixture • Condo/Apartment

Plumbing Pipe Installation or Replacement
Credentials
License

License type: Mechanical Systems Contractor

License region: Aurora, CO

License verified on 9/29/2023

Background Check

Gerardo Lopez

FAQs

  • What is your typical process for working with a new customer?

    As the homeowner you are the boss. The technician will provide you with various options but at the end you call the shot.

  • Describe a recent project you are fond of. How long did it take?

    A roofing company replacing an old beat down roof needed One Nation to remove and reinstall a 3yr old swampcooler. We did just that and the new positioning looks spectacular!

  • What advice would you give a customer looking to hire a provider in your area of work?

    It's simple licensing, honesty and quality. A company that will go the extra mile for your needs and treat your home better then their's. In other words a company that prides in providing 100% satisfaction to their customers.

  • Loading

Related cost information

You might also like

In other nearby areas

Thumbtack
Consider it done.
Customers
Pros
Support
© 2025 Thumbtack, Inc.
Thumbtack Guarantee