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Siefert Mechanical - Heating & Cooling

Heating and Air Conditioning, Heating Oil, Energy Efficiency Auditing

About us

Specializing in new system installs, System replacement, indoor air quality products such as humidifiers, EAC electronic air cleaners, ductless systems (mini splits) & Wi-fi thermostats. Providing both light commercial & residential service in St. Louis! Our #1 priority is your satisfaction!

Business highlights

9 years of trusted experience
Emergency Services Offered

Services we offer

We specialize in central air conditioning system installation, service and repairs. We offer a variety of air treatment systems to improve the quality of air in your home as well. We offer industry leading heating systems installation, service and repairs too.

Services we don't offer

Duct cleaning.

Amenities

Free Estimates
Yes
Warranties
Yes
Emergency Services
Yes


Accepted payment methods

American Express
Check
Discover
MasterCard
Visa

Photos of past projects

Reviews

5.043 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
100%
4
0%
3
0%
2
0%
1
0%


Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0
Showing 1-25 of 43 reviews

Aaron C.
01/2021
5.0
heating & air conditioning/hvac
  + -1 more
I previously worked with another company to replace my furnace. The first company was extremely flakey and would constantly cancel my appointments or simply not show up. Eventually, I decided to go on Angie's List, and I found Siefert Mechanical. This company was extremely quick to get to my house, give me an estimate, and then perform the service. Not only did Siefert Mechanical quote me a price that was $600 less than the first company, they also never cancelled or missed an appointment. They came out once to give me a quote, then the very next time they came out to my house, they replaced my furnace. The quality of their work is extremely professional, and I would HIGHLY recommend this company for any heating/cooling service you need performed.
Description of Work: Complete furnace replacement

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$2,000

Response from Siefert Mechanical - Heating & Cooling
thank you very much for the kind words and thank you very much for your business you are a pleasure to work for!!

Rich R.
01/2021
5.0
heating & air conditioning/hvac, energy audit
  + 0 more
Everything was done in a timely manner. The job was done at a very reasonable price. Chad and his helper Nate were both very knowledgeable and professional. I would highly recommend you using Seifert Mechanical for all of your HVAC needs!!
Description of Work: Install the full system heating and air conditioning as well as a new humidifier and filter system also ran a dryer vent
Rating CategoryRating out of 5
Yes, I recommend this pro

Response from Siefert Mechanical - Heating & Cooling
thank you very much sir for your business, it was a pleasure working for you!!

Ritchie O.
01/2021
5.0
heating & air conditioning/hvac
  + -1 more
Went amazing without a hitch. Great people over there and Chad treated myself and my home with great respect and sense of family! Definitely recommending to others!
Description of Work: service repair
Rating CategoryRating out of 5
Yes, I recommend this pro

Todd M.
01/2021
5.0
heating & air conditioning/hvac
  + -1 more
Great experience. I would recommend to anyone.
Description of Work: installed full system
Rating CategoryRating out of 5
Yes, I recommend this pro

Danny B.
01/2021
5.0
heating & air conditioning/hvac
  + -1 more
Awesome Chad and his guys were polite professional and efficient I would recommend him to anyone
Description of Work: installation of new furnace and humidifier
Rating CategoryRating out of 5
Yes, I recommend this pro

Response from Siefert Mechanical - Heating & Cooling
we value you as a customer and appreciate your business thank you very much

Keith S.
12/2020
5.0
heating & air conditioning/hvac
  + -1 more
They did a great!! Job!!! I told them what my furnace was not doing. He immediately knew what the problem was. Fixed it fast with out any additional charge. I was expecting some additional diagnostic fees, and or parts to fix the problem. He was most honest, and up front. I would recommend them to anybody!! Thank you so much for your help!!!!
Description of Work: Repaired and cleaned a sensor in my furnace.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Response from Siefert Mechanical - Heating & Cooling
Ty very much for your kind review

amy F.
06/2020
5.0
heating & air conditioning/hvac
  + -1 more
I hired Chad to install central AC during a big renovation project at my house. The installation went smoothly, he came back with a very fair price vs the other estimates I received. I had a lot of issues with my contractor and Chad had to deal with some things that I feel weren't fair to him. But he handled it awesome and I am so grateful. Reaching out again for additional work this year!
Description of Work: AC Installation

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Mike W.
01/2020
5.0
heating & air conditioning/hvac
  + -1 more
Excellent service! Showed up on time and completed work even faster than I though. I would highly recommend!
Description of Work: clean and check furnace as well as added a heat run to a bedroom
Rating CategoryRating out of 5
Yes, I recommend this pro

Response from Siefert Mechanical - Heating & Cooling
thank you for taking a second to give me a review we greatly appreciate it

Dawn S.
01/2020
5.0
heating & air conditioning/hvac
  + -1 more
Amazing job done he put registers in my basement and cleaned everything up and came in under estimate will have him doing all my HVAC work
Description of Work: Heating and Air Conditioning
Rating CategoryRating out of 5
Yes, I recommend this pro

Response from Siefert Mechanical - Heating & Cooling
Thank you very much for your business! You and your sister were a pleasure to work with for sure.

Modesto L.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Great contractor. Our condenser unit was seating too low on the ground and was getting dirt all over the bottom of the unit. Siefert Mechanical came over and raise the unit up for us. Mr. Chad Siefert and his crew were very professional and punctual. Great communication. I love Chad's genuine willingness to have the job done right providing suggestions and solutions that were perfect for what we needed done. Thank you!!
Description of Work: Raised up the outside condenser unit

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$325

Pam S.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Chad was on time. Very pleasant. Completed the job in a timely manner & cleaned up.
Description of Work: furnace installation as well as service
Rating CategoryRating out of 5
Yes, I recommend this pro

Mike K.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Very smooth and a clean professional install. No hidden costs. We are very happy with our new A/C unit.
Description of Work: install AC system/service repair work
Rating CategoryRating out of 5
Yes, I recommend this pro

Paul S.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Chad did a great job and did it quickly along with the area was clean when he was done. Great job Chad
Description of Work: furnace installation/repair work
Rating CategoryRating out of 5
Yes, I recommend this pro

Tim T.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Great! I had other well known companies out to give me estimates and clearly I was not given a reasonable estimate! I didn’t feel I could trust their estimates. With Chad and his company I felt very confident that I was getting a very reasonable estimate. Besides the cost being almost half of the other estimates! The job was performed quickly and professionally! This is my go to company.
Description of Work: Repair work on air conditioner. Air conditioner was running but not cooling the house. Chad came to the house within a hour. After analysis had the air running better than new! Great service and very reasonable price. And he returned a few days later to make sure everything continued to run well.
Rating CategoryRating out of 5
Yes, I recommend this pro

Tiffany J.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Chad was amazing to work with. He was flexible and able to work around my schedule. We have had our air conditioner, hvac and hot water heater all installed by Siefert Mechanical. I highly recommend to anyone looking for a reliable, knowledgeable and honest company!
Description of Work: service work as well as installation work
Rating CategoryRating out of 5
Yes, I recommend this pro

Response from Siefert Mechanical - Heating & Cooling
thank you very much for your review you are one of my favorite customers

Mike P.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Chad was excellent with my elderly mother. He kept her informed of what was going on at all times. He also gave her several options rather than trying to push her into the biggest and most expensive units. Very impressed!!
Description of Work: install new sytem

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Rick C.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
We had Chad install a new system in our home and we are very satisfied with his work. He is very professional and detail oriented..Would highly recommend him to anyone.
Description of Work: service/installation

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$5,000

Jim W.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
We had an insurance claim and Chad walked through every step of the way showing patience and professionalism. We have had no problems with our system to date.
Description of Work: Air conditioning repair and maintenance.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,800

Response from Siefert Mechanical - Heating & Cooling
we really appreciate your business as well as taking the time to give me a review

Bud H.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
He was on time, very professional, explain everything that was done, didnt try selling me anything I didnt need and pricing was very exceptional. Definitely will use him again.
Description of Work: furnace maintenance
Rating CategoryRating out of 5
Yes, I recommend this pro

Benjamin P.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Great, Mr. Seifert was very professional and informative
Description of Work: ac repair
Rating CategoryRating out of 5
Yes, I recommend this pro

Gustavo E.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Siefert Mechanical has completed more than 15 jobs for us with the utmost professionalism and honesty. The owner Chad is our #1 preferred HVAC contractor in St. Louis. Highly recommended!
Description of Work: installation of HVAC equipment
Rating CategoryRating out of 5
Yes, I recommend this pro

Response from Siefert Mechanical - Heating & Cooling
thank you very very much for your business and looking forward to the future working with you. Also thank you for the review!

Michele R.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Great. Chad came out right away; very friendly and knowledgeable. Price was reasonable and our problem was fixed right away.
Description of Work: AC repair work
Rating CategoryRating out of 5
Yes, I recommend this pro

Kristin R.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Extremely professional and helpful, diagnosed and fixed the problem timely. Would definitely recommend and use again.
Description of Work: air conditioning repair work
Rating CategoryRating out of 5
Yes, I recommend this pro

Doug B.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Chad is very efficient and professional! Very Thorough! Great service and prices very reasonable!
Description of Work: general maintenance on air conditioning equipment
Rating CategoryRating out of 5
Yes, I recommend this pro

Dion J.
12/2019
5.0
heating & air conditioning/hvac
  + -1 more
Chad’s service was great! He’s a pro. Very knowledgeable and informative with his craft. He let me know all the things to look out for and to keep up on to keep things running smooth.
Description of Work: service repair work as well as installation of HVAC equipment

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$2,500
    • 1(current)
    • 2

Contact information

15 Linda Ln, O Fallon, MO 63366


Service hours

Monday:
7:00 AM - 5:00 PM
Tuesday:
7:00 AM - 5:00 PM
Wednesday:
7:00 AM - 5:00 PM
Thursday:
7:00 AM - 5:00 PM
Friday:
7:00 AM - 5:00 PM

Licensing

Bonded

Insured

Licensed*

Eco-friendly Accreditations

LEED Accredited Professional
No
Energy Star Partner
Yes
EPA Lead-Safe Certified
No
Use Green Products or Work Practices
No
State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.

*Contact business to see additional licenses.


Service Categories

Heating and Air Conditioning,
Heating Oil,
Energy Efficiency Auditing

FAQ

Siefert Mechanical - Heating & Cooling is currently rated 5 overall out of 5.

Monday: 7:00 AM - 5:00 PM

Tuesday: 7:00 AM - 5:00 PM

Wednesday: 7:00 AM - 5:00 PM

Thursday: 7:00 AM - 5:00 PM

Friday: 7:00 AM - 5:00 PM

Siefert Mechanical - Heating & Cooling accepts the following forms of payment: American Express,Check,Discover,MasterCard,Visa
Yes, Siefert Mechanical - Heating & Cooling offers free project estimates.
Yes, Siefert Mechanical - Heating & Cooling offers eco-friendly accreditations.
No, Siefert Mechanical - Heating & Cooling does not offer a senior discount.
Yes, Siefert Mechanical - Heating & Cooling offers emergency services.
Yes, Siefert Mechanical - Heating & Cooling offers warranties.
Siefert Mechanical - Heating & Cooling offers the following services: We specialize in central air conditioning system installation, service and repairs. We offer a variety of air treatment systems to improve the quality of air in your home as well. We offer industry leading heating systems installation, service and repairs too.
Duct cleaning.

Contact information

15 Linda Ln, O Fallon, MO 63366


Service hours

Monday:
7:00 AM - 5:00 PM
Tuesday:
7:00 AM - 5:00 PM
Wednesday:
7:00 AM - 5:00 PM
Thursday:
7:00 AM - 5:00 PM
Friday:
7:00 AM - 5:00 PM