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Learn about our screening process

97% Recommended

6 Years In Business

Company Details

  • Verified Licenses

Hours

  • Mon: 8:00 AM - 4:00 PM
  • Tue: 8:00 AM - 4:00 PM
  • Wed: 8:00 AM - 4:00 PM
  • Thu: 8:00 AM - 4:00 PM
  • Fri: 8:00 AM - 4:00 PM
  • Sat: Closed
  • Sun: Closed
View All Details & Credentials

Achievements

Service Details

  • Residential Work

Areas of Expertise

  • Air Conditioning Install/Repair
  • Furnace Install/Repair
  • Heat Pumps
  • HVAC
View All Offerings and Cities Served
Deals

Cost Information

  • Free Estimates
  • Warranty Offered
  • Trip Charge May Apply
  • Credit Cards Accepted

Ratings

4.8
142 Verified Reviews
  • 5
    128
  • 4
    9
  • 3
    1
  • 2
    0
  • 1
    4

Highly rated for

  • Quality
  • Value
  • Customer Service
Showing 1-10 of 142 reviews Showing 0 reviews
5.0 Warren G. Sykesville, MD
3/18/2021

Totally awesome experience. They found problems with my old installation I was unaware of (Collapsed low-pressure tubing at the entrance and exit of my home). The Installers were able to correct the problem by replacing the tubing inside my home. This was not part of the original Quote. It was done without question and at no additional charge. A truly great experience. I would recommend them to anyone that wants a professional installation at a fare price.

5.0 Bill M. Taneytown, MD
3/17/2021

Very responsive and helpful.

5.0 Matthew V. Brunswick, MD
2/8/2021

Despite a snow storm, they had a flexible schedule to check on my heat pump, which is for a mini-split/ductless heating/air conditioning system. The worker was able to quickly determine the problem and explain it to me in a manner that made sense. The worker also recommended coverings for the tubing on the side of my house for my system, as I didn't have any but wanted to get some installed. The company was flexible enough to both repair the heat pump compressor and on the same day get the covers installed. The process was quick.

Response from Company:

Thanks for the review Matthew. Really appreciate you taking the time to write these kind words!

5.0 John B. Middletown, MD
1/28/2021

Great company to do business with. They came out same day to assess what was wrong with my heating system. The furnace needed replaced and the crew was out here the next day to install the new unit. The crew was very nice and respectful of our house. I would highly recommend using Tetteris!

Response from Company:

Thank you for your kind words John! We really appreciate it!

5.0 Jeff B. Pasadena, MD
1/16/2021

Very professional and only trying to sell you what you need. Had our furnace and AC replaced and couldnâ t be happier. They were able to squeeze us in ASAP so our family wouldnâ t be without heat.

5.0 John L. Quinton, VA
1/15/2021

Good honest estimate. Mike fully explained what happened to the old system and why. Helped me weigh the cost of a new unit vs nickel and diming the old one. Couldnâ t be happier with the result

5.0 Ben W. Frederick, MD
1/15/2021

Mike and his crew are very responsive Courteous and very professional. They work quick and go the extra mile to do it right. Mike didnâ t try to oversell me on stuff I didnâ t need. I donâ t normally write reviews unless Iâ m extremely dissatisfied or extremely impressed. I will definitely recommend this company.

5.0 Ronald M. New Market, MD
12/23/2020

Project done professionally and timely. All involved were professional and courteous.

5.0 Mike E. Brunswick, MD
12/10/2020

Prompt and informative service.. highly recommend.

5.0 Martha M. Sykesvillle, MD
12/10/2020

The men were polite, professional and the price was great.

Photos

Tetteris Heating & Air
Goodman AC & Heating
4
HVAC install and service

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Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
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  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
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  9. Identity Verification (SSN)
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  10. Identity Verification (Reverse Phone Lookup)
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